JP2017089218A - Ceiling frame suspension structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve suspension strength and earthquake-resistant strength of a ceiling frame as much as possible, by improving connection strength between a ceiling frame suspension member and a building structure, in a ceiling frame suspension structure to the building structure.MEANS FOR SOLVING THE PROBLEM: The cross-sectional area of a ceiling frame suspension member is expanded by using a square steel material, and while improving strength to a compressive load and rigidity in the horizontal direction, an installation metal fitting for installing the ceiling frame suspension member composed of the square steel material in an edge part of building side H-shaped steel, is constituted of a square box shape having a fitting port fitted to the edge part, and the ceiling frame suspension member composed of the square steel material is firmly connected to an integral structure to the installation metal fitting of the square box shape, and even square steel material independence is suspended by an H-shaped steel edge part in a state of not causing swinging in the horizontal direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a ceiling frame suspension structure for suspending a ceiling frame from a building structure using a lightweight steel material, and more particularly to a structure of a mounting bracket for a lightweight steel material building structure in the ceiling frame suspension structure. Is.

  In general, a ceiling frame that forms a part of the base structure of the ceiling is composed of, for example, a plurality of field edges and a plurality of field edge receivers to which the field edges are attached, and these field edges and field edge receivers are combined in a lattice shape. The parts that cross the top and bottom of the same field edge and the field edge receiver are integrally formed by joining and fixing to each other with a predetermined joining metal fitting.

  A suspension bolt having a predetermined length according to the height of the ceiling (the height of the ceiling) is used. For example, the lower end of the suspension bolt is attached to a predetermined portion of the field edge receiver, and the structure of the building such as an upper floor slab The upper ends of the suspension bolts are respectively attached to the predetermined mounting portions of the building via predetermined mounting brackets (hanging brackets), thereby being suspended from the ceiling installation portion of the building structure.

  In addition, a U-shaped grooved steel (channel material) or a square tube is used for the field edge and field edge constituting the ceiling frame, and a shaft-shaped rod member is used for the suspension bolt. In addition, the suspension bolt mounting brackets used were U-shaped locking brackets (lower side) and box-shaped coupling brackets (upper side) (for example, the ceilings of Patent Document 1 and Patent Document 2). (See the structure of the base structure).

JP 2008-50784 A JP 2013-68066 A

  However, as shown in Patent Documents 1 and 2 above, the lower end of the suspension bolt with a rod structure is simply locked to the ceiling frame using a U-shaped locking bracket, while the suspension bolt with the rod structure is used. In the case of a ceiling frame suspension structure in which the upper end is suspended from a building structure such as an H-shaped steel horizontal edge simply through a box-shaped fitting, the bending rigidity and suspension strength of the suspension bolt itself, The connection strength between the structure and the suspension bolt, the connection strength between the suspension bolt and the field edge receiver (or field edge), etc. are low, and there is a drawback that the earthquake resistance when the ceiling frame is suspended is lacking.

  For example, the excitation force at the time of an earthquake includes vertical and vertical vibrations caused by pitching and horizontal vibrations caused by rolling and these vibrations are actually combined more complicatedly. Therefore, in addition to the load in the vertical direction, the load in the horizontal direction is also applied to the suspension bolt and the suspension bolt mounting bracket, and it is required that the suspension bolt and the suspension bolt attachment have sufficient seismic resistance against the load in both directions.

  However, such a demand cannot be met only with the above-described rod-structured suspension bolt, a simple U-shaped locking bracket, and a simple box-shaped coupling bracket.

  The present invention has been made to solve such a problem, and by using a lightweight square steel material instead of the suspension bolt, the cross-sectional area of the ceiling frame suspension member portion is effectively enlarged, and the vertical direction The mounting bracket for attaching the suspension member made of the square steel material to the horizontal edge of the H-shaped steel that is a building structure is provided as a fitting port to the horizontal edge. Building with a rectangular box-shaped mounting bracket provided, and by firmly connecting to the rectangular box-shaped mounting bracket in an integrated structure, the ceiling frame can be constructed in a form that does not cause horizontal shaking even with the square steel material alone By suspending it on the body, the basic suspension strength and earthquake resistance of the above-mentioned ceiling frame are improved. By improving, it is an object to provide a more hanging strength of more roof frame, vibration resistance improved allowed ceiling frame suspended structure.

  The ceiling frame suspension structure of the present invention is configured to include the following problem solving means in order to solve the above problems.

(1) First Problem Solving Means First, in the ceiling frame suspension structure in the first problem solving means of the present invention, a suspension member for suspending the ceiling frame from a building structure is formed of a lightweight square steel material. And a ceiling frame hanging structure in which the ceiling frame is suspended by attaching the upper end portion of the square steel material to the building structure via a square steel material mounting bracket, wherein the building structure is horizontally oriented A rectangular box-shaped mounting bracket body in which the square steel mounting bracket is connected and integrated with the upper end of the rectangular steel material, and both left and right side walls of the mounting bracket body. A fitting port having a U-shaped cross-section opened toward the mounting edge side of the building structure at the part, and a square steel material attached to the building structure provided on the upper side or the lower side of the fitting port A fastening bolt that is screwed from the upper side to the lower side or from the lower side to the upper side after fitting to the edge, and fixes the mounting bracket body to the mounting edge of the building structure, and the mounting bracket body The mounting bracket main body is connected and integrated in a coaxial structure with the square steel member via the connection bracket.

  In the case of such a configuration, the suspension member part for suspending the ceiling frame is first constituted by a square steel material having a square cross-sectional structure extending from the ceiling frame part to the building structure part, and the ceiling frame is constructed through the square steel material. It will be suspended from the horizontal edge of the body.

  As a result, the suspension member portion has a significantly improved axial tensile and compressive strength as a vertical member as compared with the case of the suspension bolt, and the cross-sectional area is effectively expanded in both XY horizontal plane directions. The bending strength and rigidity in the direction perpendicular to the axis are greatly increased.

  Therefore, the seismic resistance against the pitching and rolling at the time of occurrence of the earthquake of the hanging member portion is effectively improved.

  In addition, in the case of the same configuration, a square steel fitting for attaching the square steel to the horizontal edge of the building structure is connected and integrated into a coaxial structure at the upper end portion of the square steel. It is securely and firmly attached to the horizontal edge of the building structure via a square steel fitting that is integrated and connected to the coaxial structure.

  That is, the square steel mounting bracket is a rectangular box-shaped mounting bracket main body that is connected and integrated with the upper end of the square steel material, and the square steel mounting of the building structure on the left and right side wall portions of the mounting bracket main body. A fitting port having a U-shaped cross-section opened toward the horizontal edge side, and provided on the upper side or the lower side of the fitting port, after fitting to the horizontal edge for mounting the square steel material of the building structure A fastening bolt that is screwed from the upper side to the lower side or from the lower side to the upper side and fixes the mounting bracket body to the horizontal edge for mounting the square steel material of the building structure, and the square steel material mounting bracket body The square steel material mounting bracket body is firmly connected and integrated with the square steel material in a coaxial structure via the square steel material connection bracket. In connection structural integrity of the structure, it is attached to the high strength through the mounting bracket body of rectangular box shape having a fitting opening and fastening bolts of the U-shaped section.

  In the rectangular box-shaped mounting bracket main body portion, the horizontal mounting edge of the building structure is firmly sandwiched between a lower surface side of the U-shaped fitting port and a lower end of the fastening bolt over a wide surface. Therefore, the square steel material mounting bracket can be securely fixed.

  In this case, the rectangular steel material mounting bracket main body bottom face and the square steel material upper end part, which are connected and integrated with each other via the square steel material connecting bracket, are abutted via an end surface having a large cross-sectional area extending in the XY direction. As a result of being integrated, the axial connection strength at the mutual connection portion is improved by the connection with the bracket, and at the same time, the bending rigidity in the direction perpendicular to the axis is the surface between the bottom surface of the mounting bracket body and the end surface of the upper end of the square steel material. Greater improvement is achieved by matching each other.

  As a result, the square steel material that is the vertical member and the square steel material mounting bracket at the upper end thereof become one member having a substantially predetermined cross-sectional area, and the square steel material that is the vertical member for hanging the ceiling frame as a whole The strength in the axial direction and the direction orthogonal to the axis is also greatly improved.

  In addition, when the lower surface side of the U-shaped fitting port is formed only by the cut-out end surfaces of the left and right side walls of the square steel fitting body, the lower surface side of the U-shaped fitting port and the building structure The contact area with the mounting edge in the horizontal direction (area of the joint receiving surface) is small, and the joining force and supporting force are also small.

  In addition, if a large force is applied due to vibration during an earthquake, the upper ends of the cutouts on the left and right side walls of the mounting bracket body may collapse (fold) inward or outward, and the horizontal mounting edge of the building structure It is also assumed that the clamping force for sandwiching the portion is reduced. If it becomes so, the support rigidity of the said square steel material also falls.

  Therefore, depending on the size of the ceiling, there is a reinforcing plate that connects and integrates the lower surfaces of the fitting ports on the left and right side walls (between the upper ends of the cutouts on the left and right side walls) forming the fitting port with the U-shaped cross section. Installed to greatly increase the contact area (the area of the joint receiving surface) to the lower surface of the horizontal mounting edge of the building structure to improve the joining force and supporting force, and close the lower side of the fitting opening By forming the structure and increasing the strength and rigidity, the upper ends of the notches on the left and right side walls of the square steel mounting bracket main body on the bottom side of the U-shaped fitting port will fall inward (fold) A configuration that reliably prevents this is also adopted as necessary.

If it does in this way, the clamping force which pinches | interposes the attachment edge part of the horizontal direction of a building structure between fastening bolt lower ends will be ensured reliably.
(2) Second Problem Solving Means Next, the ceiling frame suspension structure in the second problem solving means of the present invention is the configuration of the first problem solving means of the present invention, wherein the square steel material is a cross-sectional cylinder. It is a square steel material with a mold structure.

Thus, when the square steel material that suspends the ceiling frame is made of a square steel material having a cross-sectional cylindrical structure, the cross-sectional area of the suspension member is effectively expanded in both the XY directions by the cylindrical wall of the closed cross-sectional structure extending in both XY directions, Since the square end face of these closed cross-sectional structures is aligned with the bottom surface of the square steel mounting bracket body, it is connected and integrated into the coaxial structure by the connecting bracket, so the square steel mounting bracket body is integrated, and the square steel mounting bracket body The rigidity in the direction perpendicular to the axis after being attached to the horizontal attachment edge of the building structure is greatly improved.
(3) Third Problem Solving Means Next, the ceiling frame suspension structure in the third problem solving means of the present invention is the structure of the first problem solving means of the present invention, in which the square steel material has a cross section C. It is characterized by being a lip groove steel with a channel-shaped channel structure.

Thus, when the square steel material for suspending the ceiling frame is made of a lip groove steel material having a channel structure with a C-shaped cross section, the cross-sectional area of the suspension member is XY by the three pieces extending in both XY directions and the lip portion on the opening side. It is effectively expanded in both directions, and these three pieces and edges are joined to the bottom surface of the square steel mounting bracket body, and are connected and integrated into the coaxial structure by the connecting bracket. The rigidity in the direction orthogonal to the axis after being attached to the horizontal mounting edge of the building structure via the square steel fitting mounting body is effectively improved.
(4) Fourth Problem Solving Means Next, the ceiling frame suspension structure in the fourth problem solving means of the present invention is the same as that of the first problem solving means of the present invention, in which the square steel material has a cross-sectional shape. It is characterized by being a channel steel with a channel-shaped channel structure.

Thus, when the square steel material for suspending the ceiling frame is made of a channel steel material having a channel structure with a U-shaped cross section, the cross-sectional area of the suspension member is effectively expanded in both XY directions by three pieces extending in both XY directions, Since the three pieces are joined to the bottom surface of the square steel mounting bracket main body and connected and integrated into the coaxial structure by the connecting bracket, the square steel mounting bracket main body is integrated, and the building structure body via the square steel mounting bracket main body The rigidity in the direction perpendicular to the axis after being attached to the horizontal attachment edge is effectively improved.
(5) Fifth Problem Solving Means Next, the ceiling frame suspension structure according to the fifth problem solving means of the present invention is the same as the first problem solving means of the present invention, wherein the square steel material has a cross-sectional angle. It is characterized by being an angle steel with a structure.

Thus, when the square steel material that suspends the ceiling frame is made of angle steel with a cross-sectional angle structure, the cross-sectional area of the suspension member is effectively expanded in both XY directions by two pieces extending in both XY directions, and these two pieces are square. The steel brackets are joined to the bottom surface of the steel fitting body, and are connected and integrated into the coaxial structure by the connecting bracket. Therefore, the square steel fitting body is integrated, and the horizontal direction of the building structure is passed through the square steel fitting body. The rigidity in the direction perpendicular to the axis after being attached to the attachment edge is effectively improved.
(6) Sixth Problem Solving Means Next, the ceiling frame suspension structure in the sixth problem solving means of the present invention is the configuration of the first problem solving means of the present invention, wherein the connecting bracket has bolt insertion holes. It is characterized by comprising a hinged connecting bracket.

  As described above, when the connecting bracket is constituted by a hinge-structured connecting bracket having a bolt insertion opening, the number, shape, and mounting position of the hinge bracket are appropriately arranged according to the above-described various shapes of square steel materials. Thus, the square steel material can be connected, and the connection strength and the support rigidity can be increased more effectively.

  As a result, according to the present invention, the ceiling frame hanging strength of the entire ceiling frame hanging member portion, the connection strength between the hanging member and the hanging member mounting bracket, and the mounting strength of the hanging member mounting bracket to the building structure Both of these are greatly improved.

  As a result, the earthquake resistance of the entire ceiling base is greatly improved, and it becomes possible to provide a ceiling frame hanging structure with higher earthquake resistance.

FIG. 5 is a perspective view of a building structure (H-shaped steel), a mounting bracket, a suspension member (a square tube made of lightweight steel), and an auxiliary bracket portion showing the ceiling frame suspension structure according to the first embodiment of the present invention. is there. It is a side view of a building structure (H-section steel), a mounting bracket, a suspension member (a square tube made of a lightweight steel material), and an auxiliary bracket portion showing the ceiling frame suspension structure.

It is a front view of the building structure (H-section steel), attachment bracket, and suspension member (square tube made of lightweight steel) showing the ceiling frame suspension structure. is there. It is the perspective view seen from the diagonally right upper side which shows the structure of the suspension member (the square cylinder which consists of lightweight steel materials) attachment bracket in the ceiling frame suspension structure. It is the perspective view seen from the diagonally lower right which shows the structure of the suspension member (the square cylinder which consists of lightweight steel materials) attachment bracket in the ceiling frame suspension structure. It is a center sectional view showing the structure of a hanging member (a square tube made of lightweight steel) mounting bracket in the ceiling frame hanging structure. It is the partially cut perspective view seen from the diagonally upper right which shows the structure of the suspension member (the square cylinder which consists of lightweight steel materials) in the same ceiling frame suspension structure. It is the perspective view seen from the diagonally upper right which shows the structure of the modification of the suspension member (the square cylinder which consists of a lightweight steel material) attachment bracket in the ceiling frame suspension structure of the said 1st Embodiment. It is a side view which shows the structure of the modification which deform | transformed a part of suspension member (square cylinder which consists of lightweight steel materials) attachment metal fittings in the ceiling frame suspension structure of the said 1st Embodiment. It is a center sectional view showing the structure of the modification of the hanging member (the square tube made of lightweight steel material) mounting bracket in the ceiling frame hanging structure of the first embodiment. In the structure of the modification of the suspension member (a square tube made of lightweight steel) mounting bracket in the ceiling frame suspension structure of the first embodiment of the holding plate portion of the horizontal edge of the building structure (H-shaped steel) It is an enlarged side view which shows a structure. It is a perspective view which shows the structure at the time of making it use for attachment of a diagonal reinforcement member (brace material) in the ceiling frame hanging structure which concerns on 1st Embodiment of this invention. In the case of adopting the configuration of FIG. 12, a connecting bracket in the case of using a rectangular tube made of the same lightweight steel material as the suspension member for the diagonal reinforcing member (brace material), and connecting the upper end with a connecting bracket. It is the perspective view seen from the diagonally upper right which shows the structure of a part. FIG. 13 is a perspective view showing a configuration when a part of the connecting metal fitting is deformed when the hanging member attaching metal fitting is used for attaching an oblique reinforcing member (brace material) as shown in FIG. 12. It is the perspective view seen from diagonally upper right which shows the structure of the connection metal fitting part at the time of employ | adopting the structure of FIG. A perspective view of a building structure (H-shaped steel), a mounting bracket, a hanging member (a lip groove shaped steel made of lightweight steel), and an auxiliary bracket portion showing a ceiling frame hanging structure according to a second embodiment of the present invention It is. It is a side view of a building structure (H-section steel), a mounting bracket, a suspension member (lip groove section made of lightweight steel), and an auxiliary bracket portion showing the ceiling frame suspension structure. It is the perspective view seen from diagonally lower right which shows the structure of the suspension member attachment bracket part used in the ceiling frame suspension structure. Building structure (H-section steel) showing a ceiling frame suspension structure according to the third embodiment of the present invention, mounting bracket, suspension member (channel steel made of lightweight steel), diagonally lower right of auxiliary bracket portion It is the perspective view seen from. It is a side view of a building structure (H-section steel), a mounting bracket, a suspension member (a grooved steel made of lightweight steel), and an auxiliary bracket portion showing the ceiling frame suspension structure. Building structure (H-shaped steel) showing a ceiling frame hanging structure according to the fourth embodiment of the present invention, mounting bracket, hanging member (equilateral mountain-shaped steel made of lightweight steel), diagonally lower right of auxiliary bracket portion It is the perspective view seen from. It is a side view of a building structure (H-section steel), a mounting bracket, a suspension member (equilateral mountain-shaped steel made of lightweight steel), and an auxiliary bracket portion showing the ceiling frame suspension structure.

  Hereinafter, several specific embodiments for carrying out the ceiling frame suspension structure according to the present invention will be described in detail with reference to the accompanying drawings. In each of the configurations according to the embodiments of the present invention, in any case, for example, an H-shaped steel having a horizontal mounting edge is employed as a building structure on which the ceiling frame is suspended. It is configured to be suitable for mounting against a horizontal mounting edge of H-section steel.

<First Embodiment>
First, attached FIG. 1 to FIG. 15 show a ceiling frame hanging structure according to the first embodiment of the present invention. The structure of the H-shaped steel as a building structure in the same structure, the H-shaped steel The structure of the ceiling frame suspension member for suspending the ceiling frame on the horizontal mounting edge of the ceiling, the structure of the suspension member mounting bracket for attaching the upper end of the ceiling frame suspension member to the mounting edge of the H-shaped steel, the ceiling frame The structure of the brace material which is the diagonal reinforcement material which connects the H-shaped steel part and the said H-shaped steel part diagonally using the said suspension member attachment metal fitting, a connection metal fitting, the structure of those modifications, etc. are shown.

  Hereinafter, the configuration and operation of each part will be described in detail with reference to the corresponding drawings.

(1) Configuration of Ceiling Base Portion The ceiling base in the embodiment of the present invention is not particularly illustrated, but, for example, from a plurality of field edges and a field edge receiver that attaches the plurality of field edges in a lattice shape. A ceiling frame, a plurality of suspension members that suspend the ceiling frame from, for example, a horizontal mounting edge of an H-shaped steel that is a building structure provided on the upper floor of a building, and the plurality of suspension members It is comprised from the brace material etc. which are the several diagonal reinforcement material which connects between suspension members in the diagonal direction.

  About the structure of such a ceiling frame part, it is the same as that of the structure of FIG. 1, FIG. 2 of Japanese Patent Application No. 2015-120940 which is an application of this applicant, for example.

  Also in the case of this embodiment, the field edge and the field edge receiver are each composed of a metal square tube member on a rectangular section that is long in the vertical direction, and a field edge composed of a metal square tube member on the cross section rectangle. A field receiver is, for example, a U-shaped washer (upper side and lower side) provided at a crossing portion (overlapping portion) of each other excluding a connecting portion with a lower end of a suspension member, which will be described later. Are firmly fixed by connecting and pulling them up and down with connecting bolts.

  Of course, conventional channel-type steel materials can be used for these field edges and field edge receivers, and they can be selected depending on the required application and strength.

  On the other hand, the lower end side of the suspension member for suspending the ceiling frame is attached to the intersection portion at a predetermined position among the intersection portions of the field edge and the field edge receiver via a ceiling frame mounting bracket. It is supposed to be.

  The ceiling frame is suspended by the plurality of suspension members and the plurality of diagonal reinforcing members (brace members) on the horizontal mounting edge of the H-shaped steel that is the structure of the building.

  In this manner, after the suspension construction for the horizontal mounting edge portion of the H-shaped steel of the ceiling frame is completed, for example, a ceiling finishing board required for the lower surface side of the field edge is provided. (For the mounting structure of a ceiling finishing board or the like, see, for example, Japanese Patent Application Laid-Open No. 2013-68066).

(2) About the configuration of the H-section steel part (see FIGS. 1 to 3)
The building structure in this embodiment is made of H-section steel as described above. As shown in FIGS. 1 to 3, for example, the H-shaped steel 10 is arranged in a structure in which H is laid sideways, and the central portions of the horizontal edge portions 10a and 10b on both the upper and lower ends are connected to each other in an I shape. It has a high-strength structure connected by parts.

  The horizontal edge portions 10a and 10b extending equally in the left and right directions on both the upper and lower end sides function as mounting edge portions for hanging the ceiling frame. In the case of this embodiment, the lower horizontal edge portion 10a is selected as the mounting edge. Therefore, hereinafter, the horizontal edge portion 10a on the lower side will be expressed as an attachment edge portion 10a.

(3) About structure of ceiling frame suspension member part (refer FIGS. 1-3, FIG. 7)
Next, the plurality of ceiling frame suspension members are denoted by reference numerals 2, 2,... In FIGS. The ceiling frame hanging members 2, 2,... Are vertical members for hanging the ceiling frame extending in the vertical direction as shown in FIGS. However, the suspension members 2, 2... In this embodiment are lightweight square steel materials, more specifically, a square cross section (for example, as shown in FIG. 7). It is formed of a rectangular cylinder (lightweight rectangular steel pipe) made of a lightweight steel material (rectangular or square), and the cylindrical wall portion of the cylindrical body is formed to have sufficient strength and thickness as a whole.

  The rectangular cylinder having a square cross section may have various structures. In the case of this embodiment, for example, as shown in detail in FIG. 7, the metal plate is bent into a square cross section (for example, Roll forming), connecting both side edges 2a, 2b by staking each other at the corner A side A part, and tying them by providing a bent rib 2c inside the adjacent part of one side edge The parts are crimped and integrated into a square cylinder having a closed section structure with high compressive strength.

  As will be described below, the ceiling frame suspension member 2 is provided at the lower end of a ceiling frame suspension member attachment fitting 61 whose upper end is fitted and fixed to the attachment edge portion 10a of the H-shaped steel 10. Since it is connected via a bolt 51 to the pair of left and right connecting brackets 50a, 50b, bolt holes 2d, 2d for inserting the bolt 51 are provided at the upper end portion.

(4) About the structure of the ceiling frame suspension member mounting bracket (refer to FIGS. 1 to 6, especially FIGS. 4 to 6)
As described above, in this embodiment, the building-side structure to which the ceiling frame is attached is composed of H-shaped steels 10, 10,..., And the horizontal mounting edges of the H-shaped steels 10, 10,. The ceiling frame suspension member 2 for suspending the ceiling frame with respect to 10a, 10a,... Is formed of a metal rectangular tube having a closed cross-sectional structure, and has a larger cross-sectional area than a conventional suspension bolt. It is characterized by constituting a vertical member having high compressive load strength and bending rigidity.

  Accordingly, in response to this, the ceiling frame suspension member mounting bracket 61 for attaching the upper end side of the suspension member 2 to the horizontal mounting edge 10a of the H-shaped steel 10 on the building side is also made of the metal square. For example, it is configured as follows so that the ceiling frame suspension member 2 made of a cylindrical body is connected and integrated into a cylindrical shape having a rectangular cross-sectional structure and has high compressive strength and high bending rigidity.

  That is, the ceiling frame hanging member mounting bracket 61 is formed of a rectangular metal square tube having a predetermined outer diameter as shown in FIGS. 1 to 3 and FIGS. 4 to 6, for example. A bottom wall surface (fastening seat) 610 which is abutted in a stable contact state corresponding to the cross-sectional area and cross-sectional shape of the upper end of the ceiling frame suspension member 2 and is connected and integrated with the square structure in the vertical direction (axial direction). A rectangular box-shaped mounting bracket body 61a having a rectangular box shape (opened only on the front side) and a front side of the rectangular box-shaped mounting bracket body 61a (the mounting edge portion 10a side of the H-shaped steel 10). The fitting ports 61b and 61b having a U-shaped cross-section with a predetermined depth in the front-rear direction and the upper wall surface 611 side of the center portion in the front-rear direction of the U-shaped fitting ports 61b and 61b are penetrated downward from the upper side. Fastening bolt provided At the time of attaching the screw hole 61i to the mounting edge 10a of the H-shaped steel 10, it is inserted and screwed into the fastening bolt screw hole 61i from the upper side to the lower side, and the rectangular box-shaped mounting bracket It is comprised from the fastening bolt 61c which fixes the main body 61a with respect to the attachment edge part 10a of the said H-section steel 10.

  The fastening bolt 61c is screwed into the fastening bolt screwing hole 61i via, for example, a spring washer 61j and a locking nut 61h, and is configured so as not to loosen after the bolt is fastened. Has been.

  The U-shaped fitting openings 61b and 61b are formed by notching the left and right side walls 612 and 612 on the left and right sides of the front opening of the mounting bracket body 61a to the rear side to a predetermined depth (for the time being). In the figure, two pairs of left and right symbols 61b and 61b are shown as corresponding to the left and right side walls 612 and 612 cut out in a U-shaped cross section).

  In the case of this embodiment, the fitting ports 61b and 61b to the H-shaped steel mounting edge 10a are provided at least in the front half portion when viewed from the side surface of the mounting bracket body 61a, A substantially entire portion of the bottom surface 610 is in contact with the upper end surface of the ceiling frame suspension member 2 made of the above-described rectangular cylinder, and the ceiling frame is suspended by the bolt 51 via the connection brackets 50a and 50b in the contact state. The member mounting bracket 61 and the ceiling frame suspension member 2 are firmly connected and integrated.

  As a result, the ceiling frame hanging member mounting bracket 61 and the ceiling frame hanging member 2 become substantially a rigid body having a single rectangular tube structure, and the ceiling frame hanging member mounting bracket 61 is attached to the H-shaped steel mounting edge 10a. Combined with the strong attachment state, the ceiling frame is suspended in a state that is extremely strong and strong against the horizontal excitation force.

  The connection brackets 50a and 50b to which the ceiling frame suspension member 2 is coupled as described above are located on the left and right sides of the bottom portion of the box-shaped ceiling frame suspension member mounting bracket 61, for example, and extend long below a predetermined dimension. The tip end portion is formed of a hinge bracket structure having a substantially semicircular shape (or may be a square shape), and the bolt insertion holes 52, 52 are located at the center axis portion of the tip end side semicircular shape. Is formed.

(5) Configuration of Partial Modification of Ceiling Frame Hanging Member Mounting Bracket In the ceiling frame hanging member mounting bracket 61 in the above configuration, the fastening bolt 61c is connected to the upper surface of the H-shaped steel mounting edge 10a in the fitting portion. The fastening is pressed only at the tip portion 61d of the bolt shaft 61k of the fastening bolt 61c to apply the fastening force.

  For this reason, although it is supported by a large area between the opening side walls 612 and 612 of the mounting bracket main body 61a on the lower surface side of the H-shaped steel mounting edge portion 10a, the upper surface side can be pressed only in a state close to point contact. Thus, when a horizontal excitation force is applied, the fixing force on the upper surface side is lacking, and the fastening fixing force as a whole is also low.

  Therefore, as one modified example (improved example) for solving such a problem, as shown in FIGS. 8 to 10, for example, a pressing plate 61f having a predetermined area is provided at the lower end of the bolt shaft 61k of the fastening bolt 61c. Further, a configuration that enlarges the pressing area on the upper surface side is also adopted.

  The holding plate 61d at the lower end of the bolt shaft 61k of the fastening bolt 61c is formed, for example, in a disc shape (or a square plate, of course), and the diameter thereof is set on the left and right side walls 612 of the mounting bracket body 61a. By forming it in the dimension covering the full width between 612, it is formed in a sufficiently wide pressing area corresponding to the space between the left and right side walls 612, 612 of the fitting port portions 61b, 61b.

  In addition, as shown in detail in FIG. 10 and FIG. 11, the thickness a of the pressing plate 61d is set to a sufficiently large plate thickness (for example, 12 mm), and the depth b is sufficiently large. A bolt screwing groove 61m (for example, 11 mm) is formed, and the tip 61d of the bolt shaft 61k of the fastening bolt 61c is screwed into the bolt screwing groove 61m by a sufficient length b, so that the direction perpendicular to the axis is reached. In order to prevent tilting to each other, they are securely engaged with each other.

  Moreover, the hole diameter of the portion 61n (for example, 1 mm) having a predetermined length c from the tip (lower end) of the bolt screw groove 61m is set to be smaller than the hole diameter of the bolt screw groove 61m. The bolt shaft 61k of the screwed fastening bolt 61c is securely and firmly locked and fixed to the pressing plate 61f at an appropriate screwing depth position.

  The combination of these configurations ensures a strong clamping force for clamping the mounting edge portion 10a of the H-shaped steel 10 on both the upper and lower sides with the holding plate 61f on the lower end side of the bolt shaft 61k of the fastening bolt 61c. Is ensured and realized.

  In that case, if necessary, a reinforcing plate for connecting the left and right side walls 612 and 612 cut out in the U-shaped cross section is provided to deform (fall down) the left and right side walls 612 and 612 cut out in the U-shaped cross section. ), Thereby increasing the fastening force on the upper and lower surfaces of the H-shaped steel mounting edge 10a at the time of fastening, thereby realizing a more secure and firm fastening state.

(6) About structure of auxiliary metal fitting corresponding to ceiling frame hanging member attachment metal fitting In the case of this embodiment, the above-mentioned ceiling frame hanging member attachment metal fitting 61 is opposite to the I type portion of the above H type steel 10 sandwiched therebetween. An auxiliary metal fitting 64 having the same structure as that of the ceiling frame hanging member attachment metal fitting 61 is provided on the side attachment edge portion 10a.

  That is, as shown in FIGS. 1 to 3, for example, the auxiliary metal fitting 64 includes a rectangular box-shaped auxiliary metal body 64a (a rectangular parallelepiped shape whose entire front side is open), and a rectangular box-shaped auxiliary metal metal body 64a. Fitting ports 64b, 64b having a U-shaped cross-section with a predetermined depth in the front-rear direction opened on the front side (the mounting edge 10a side of the H-shaped steel 10), and front and rear of the U-shaped fitting ports 64b, 64b Positioned on the upper wall surface of the central portion in the direction, provided from the upper side to the lower side, and inserted and screwed from the upper side to the lower side at the time of mounting, the rectangular box-shaped auxiliary metal fitting body 64a is attached to the H-shaped steel 10 The fastening bolts 64c are fixed to the opposite mounting edge 10a, and the fitting ports 64b and 64b having a U-shaped cross section are provided on the left and right side walls of the front-side opening of the auxiliary metal fitting body 64a. Cut a predetermined depth on the rear side It is formed by cutting.

  Then, the ceiling frame hanging member mounting bracket 61 and the auxiliary bracket 64 have their fitting ports 61b, 61b and 64b, 64b opposed to each other in the same horizontal plane direction, for example, as shown in FIGS. In the state, the two connecting rods 70, 70 on the left and right are strongly pulled and connected to each other.

  As a result, the ceiling frame suspension member mounting bracket 61 is more securely and firmly fixed to the mounting edge 10 a of the H-section steel 10.

  That is, according to such a configuration, in the coupled and fixed state of FIGS. 1 to 13, the mounting bracket 61 of the ceiling frame suspension member 2 that suspends the ceiling frame is reliably fitted in the fitting direction by the auxiliary bracket 64. Even if an external force in the non-fitting direction is applied to the mounting bracket 61 of the ceiling frame suspension member 2 by being pulled and fixed, it does not come off, and the H-shaped steel mounting edges 10a and 10a Since the two ends are fitted and fixed in opposite directions, the fitted state itself is further strengthened.

  For example, in the case of the same configuration, as apparent from the configuration shown in FIG. 2, if a force in the horizontal arrow A1 direction acts on the ceiling frame hanging member 2, the ceiling frame hanging member mounting bracket 61 Through the fitting portion, a pressing force in the direction of arrow A2 acts on the attachment edge portion 10a of the H-shaped steel 10, and a tensile force in the direction of arrow A3 acts on the connecting rods 70 and 70.

  However, the mounting edge 10a of the H-shaped steel 10 does not move because of its high support rigidity, and a large tensile force A3 acts on the connecting rods 70 and 70. Therefore, if there is no auxiliary metal fitting 64 and there are no connecting rods 70, 70, the fitting state of the fitting portion of the ceiling frame hanging member attachment fitting 61 is deteriorated, and the fitting state is released depending on the case. Is also possible.

  However, as described above, the ceiling frame hanging member mounting bracket 61 and the auxiliary bracket 64 are used to fit and fix in two opposite directions using two sets of brackets, and with a predetermined width on both sides, When the two connecting rods 70 and 70 are connected in the opposite direction, the auxiliary metal fitting 64 and the connecting rods 70 and 70 reliably prevent the fitting portion from being deformed by the large tensile force A3, and a more reliable fitting is achieved. The state can be maintained. As a result, the movement of the ceiling frame suspension member 2 in the A1 direction is also suppressed.

  On the other hand, if a force in the direction of the horizontal arrow B1 is applied to the ceiling frame suspension member 2 on the contrary, the H shape is formed via the fitting portion of the ceiling frame suspension member mounting bracket 61. A tensile force in the arrow B2 direction acts on the mounting edge 10a of the steel 10, and a pressing force in the arrow B3 direction acts on the connecting rods 70 and 70.

  However, the mounting edge 10a of the H-shaped steel 10 does not move because of its high support rigidity, and a large pressing force B3 acts on the connecting rods 70 and 70. Therefore, if the auxiliary metal fitting 64 and the connecting rods 70 and 70 are not provided, the fitting state of the fitting portion of the ceiling frame hanging member attachment fitting 61 is deteriorated, and the fitting state is released depending on the case. Is also possible.

  However, as described above, the two fittings of the ceiling frame hanging member mounting bracket 61 and the auxiliary bracket 64 are used to be fitted and fixed at two locations, and the two are placed with a predetermined width on the left and right sides. When the connecting rods 70 and 70 are connected, the large pressing force B3 is blocked by the connecting rods 70 and 70 and the auxiliary metal fitting 64. Therefore, the fitting portion is prevented from being deformed by the pressing force B3, and reliable. The fitting state can be maintained.

  As a result, the movement of the ceiling frame suspension member 2 in the B1 direction is also suppressed. As a result, the plurality of ceiling frame suspension members 2, 2... Are less likely to roll and the earthquake resistance is improved.

  In addition, as described above, two sets of brackets, the ceiling frame hanging member mounting bracket 61 and the auxiliary bracket 64, are used to be fitted and fixed in two opposing directions, and with a predetermined width on the left and right. When the two connecting rods 70 and 70 are connected in the opposite direction, the auxiliary metal fitting 64 and the connecting rods 70 and 70 reliably prevent deformation of the fitting portion due to a large tensile force, and a more reliable fitting state is achieved. In this case, two connecting rods 70 and 70 are not always necessary, and the configuration in which one connecting rod 70 is provided at the center of each other is sufficiently similar. The effect can be realized.

(7) About connection structure of diagonal reinforcement using ceiling frame hanging member mounting bracket The ceiling frame hanging member mounting bracket 61 configured as described above is a pair of left and right coupling brackets on the lower side of the mounting bracket body 61a. By using 50a and 50b, for example, as shown in FIG. 12, it is also possible to connect an oblique reinforcing material (brace material) 4 to the lower side ceiling frame (a square tube forming a field edge receiver). is there.

  In the case of this embodiment, the diagonal reinforcing member 4 is also a metal square tube (having the configuration shown in FIG. 7) made of a lightweight steel material having a square cross section similar to the ceiling frame suspension member 2. For example, a U-shaped connecting fitting 73 having a U-shaped cross section as shown in FIG. 13 is attached to the upper end portion, and both sides (outside sides) of the connecting brackets 50 a and 50 b below the ceiling frame suspension member 61 are connected via the connecting fitting 73. ) And are connected via bolts 51.

  For example, as is apparent from FIG. 13, the connecting fitting 73 is screwed to the left and right side walls of the diagonal reinforcing member 4 made of the above-mentioned rectangular tube on the left and right side wall portions of the U-shaped connecting fitting body 73b. Drill screw insertion holes 74a, 74a,... Are fitted into the upper wall surface and left and right wall surfaces of the diagonal reinforcing member 4, and fastened and fixed as shown in FIG. And integrate.

  And the hinge brackets (connecting pieces) 73a, 73a having bolt insertion holes 73e, 73e provided extending long at the distal end sides of the left and right side walls where the drill screw insertion holes 74a, 74a,. The bolts are fitted to the outside of the pair of left and right connecting brackets 50a, 50b below the ceiling frame suspension member mounting bracket 61 having the bolt insertion holes 52, 52 so that the bolt insertion holes 73e, 73e, 52, 52 are coaxially positioned. In addition, the bolt 51 is inserted, and the other end side is tightened with a nut 52 and connected as shown in FIG. Thereby, the diagonal reinforcing material 4 can be connected and installed easily and reliably.

  Of course, the mounting bracket 61 for attaching the diagonal reinforcing member is prepared separately from the mounting brackets 61, 61,... In the ceiling frame suspension part, and interferes with the mounting brackets 61, 61,. It is installed using the position that does not.

  In this way, between the ceiling frame side edge receiver (not shown) and the building structure side H-shaped steel 10 via the mounting bracket 61 for attaching the diagonal reinforcing material, the rectangular tube having a high compressive load in the vertical diagonal direction. When the diagonal reinforcing materials (brace materials) 4, 4,... Are arranged, the ceiling frame suspension members 2, 2,. A stronger reinforcing structure that forms a right triangle between them will be realized.

  Therefore, the ceiling frame strength as a vine shelf and the suspension strength of the ceiling frame are further improved, and the seismic strength against the horizontal excitation force in the event of an earthquake is greatly improved.

  In this way, even when used as the diagonal reinforcing member mounting bracket 61, a structure in which the above-described auxiliary bracket 64 is combined and connected to the left and right mounting edge portions 10a and 10a of the H-shaped steel 10 as necessary is employed. The

(8) Constituent Materials for Ceiling Frame Hanging Member Mounting Bracket and Diagonal Reinforcement Material Mounting Bracket In addition, in the case of this embodiment, the ceiling frame hanging member mounting bracket 61 and the diagonal reinforcement member mounting bracket 61 having the above configuration are respectively As an example, for example, it is integrally formed of cast steel or ductile cast iron.

  As in the former case, when the ceiling frame hanging member mounting bracket 61 and the diagonal reinforcing member mounting bracket 61 adopt an integrally molded structure made of cast steel, the mounting brackets 61 and 61 can be easily manufactured at a low cost. become able to. Moreover, since cast steel itself has high strength, when the mounting brackets 61 and 61 are integrally formed using the cast steel, the mounting brackets 61 and 61 are, as described above, the rectangular box-shaped mounting bracket body 61a. Even if there is a fitting hole 61b, 61b for fitting to the mounting edge 10a of the H-section steel 10, an insertion hole for the fastening bolt 61c, a connection bracket 50a, 50b, etc. Insufficient strength, such as when formed by sheet metal processing and welding, it becomes unnecessary to reinforce with a reinforcing member to solve it (specifying the application of the present applicant as using a reinforcing member) (See the configuration of FIG. 9 of application 2014-71636). Further, there is no variation in welding strength and no increase in manufacturing cost as in the case of iron plate welding.

  In this case, since the corresponding auxiliary metal fittings 64 have the same configuration, those integrally molded from cast steel are used in the same manner.

As the cast steel material in this case, for example, SC450 is suitable among carbon steel cast products SC360, SC410, SC450, and SC480 of JIS-G5101. In the case of this cast steel SC450, the tensile strength is 450 N / mm ² , the elongation is 19%, and it has both strength and toughness. Therefore, it is not brittle like general cast iron and can sufficiently withstand even when an impact load such as an earthquake load is applied, and the fitting ports 61b and 61b and the connecting brackets 50a and 50b as described above are provided. In this case, a sufficiently effective strength can be maintained.

  In addition to the cast steel, for example, ductile cast iron (FCD450) can be used. Even in that case, the same performance as the cast steel can be obtained.

(9) Modification of Partial Configuration of Diagonal Reinforcement Connecting Metal Fitting In the above-described oblique reinforcing material connecting metal fitting 73, as is apparent from the structure of FIG. 12, for example, the drill screw insertion hole 74a of the connection metal fitting 73b. , 74a,... There are no support portions for fastening bolts between the hinge brackets (connecting pieces) 73a, 73a having bolt insertion holes 73e, 73e provided to extend at the front end sides of the left and right side walls with the ceiling frame. A fastening force at the time of bolt fastening is supported on the connecting brackets 50a and 50b on the hanging member attachment fitting 61 side. Therefore, there is a problem that the bearing force is not always sufficient.

  Therefore, as a configuration for solving such a problem, for example, as shown in FIGS. 14 and 15, bolt insertion holes 73 e and 73 e provided to extend long at the distal end sides of the left and right side wall portions of the coupling metal body 73 b are provided. A reinforcing pipe portion 75 for supporting the fastening force at the time of bolt fastening is provided between the hinge brackets (connecting pieces) 73a and 73a, and the hinge brackets 73a and 73a that are connected and integrated with each other by providing the pipe portion 75 are connected to the ceiling. A configuration is also employed in which the fastening force when the bolts 51 are fastened is supported by being fitted inside the connection brackets 50a and 50b on the frame hanging member attachment fitting 61 side.

  In this way, when the connection brackets 50a and 50b on the ceiling frame suspension member mounting bracket 61 side are fastened with the bolts 51 and the nuts 52, they can be fastened with a sufficiently large fastening force. And the diagonal reinforcing material mounting bracket (ceiling frame hanging member mounting bracket) 61, and the connecting strength between the diagonal reinforcing material 4 and the H-shaped steel 10 is increased. Moreover, the deformation | transformation to the inner side of the connection bracket 50a, 50b of the said ceiling frame suspension member attachment metal fitting 61 can also be prevented.

<About the second embodiment>
In the ceiling frame suspension structure according to the first embodiment described above, a square cylinder (FIG. 7) having a square cross section made of a lightweight steel material is adopted as the ceiling frame suspension member 2 made of a square steel material, and the upper end portion thereof is adopted. The pair of left and right connecting brackets 50 a and 50 b below the ceiling frame suspension member mounting bracket 61 are fitted inside and connected by bolts 51.

  However, the square steel material that constitutes the ceiling frame suspension member 2 is not limited to such a square tube having a square cross section, and is made of a lip groove steel material having a C-shaped cross section as shown in FIGS. 16 and 17, for example. It can also be constituted by a square steel material.

  In the case of such a lip groove steel material having a C-shaped cross section, in order to have a pair of lip portions (flange portions) 2f and 2f having a predetermined width on the opposite side face through the side wall portion of the main body wall side web portion 2e, Although it is not a closed section like the above rectangular cylinder, it has a sufficient compressive load close to it, effective ceiling frame strength improving effect, effective ceiling frame hanging strength improving effect, horizontal excitation at the time of earthquake occurrence An effective seismic force improving action against force can be realized (see arrows A1 to A3 and B1 to B3 similar to FIG. 2 shown in FIG. 17).

  In this case, the bolt 51 can be inserted by forming a bolt insertion hole at the upper end of the wide web portion 2e, which is the single wall, and therefore, the connecting bracket 50 on the ceiling frame hanging member mounting bracket 61 side. For example, as shown in FIG. 18, it is sufficient to form one bolt insertion hole 52 at the center of the bottom of the fitting main body 61a, so that the configuration and attachment are simplified.

  However, the bottom surface of the mounting bracket main body 61a and the upper end surface of the ceiling frame suspension member 2 are abutted with a wide abutting area having a C-shaped cross section. It is high, and bending deformation in the direction perpendicular to the axis at the connecting portion is less likely to occur.

<About the third embodiment>
In the ceiling frame suspension structure according to the first embodiment described above, a square cylinder (FIG. 7) having a square cross section made of a lightweight steel material is adopted as the ceiling frame suspension member 2 made of a square steel material, and the upper end portion thereof is adopted. The pair of left and right connecting brackets 50 a and 50 b below the mounting bracket 61 are fitted inside and connected by bolts 51.

  However, the square steel material constituting the ceiling frame suspension member 2 is not limited to such a square tube having a square cross section, but is a groove shape which is a channel member having a U-shaped cross section as shown in FIGS. 19 and 20, for example. It can also be made of steel.

  Even in the case of a grooved steel material which is a channel member having a U-shaped cross section, since the main body wall side web portion 2e and the side wall portions on both sides thereof are orthogonal to each other in an angle shape (in the XY direction), a closed cross section is provided. Although it has sufficient compressive load, effective ceiling frame strength improvement effect, effective ceiling frame suspension strength improvement effect, effective earthquake resistance improvement effect against horizontal excitation force at the time of earthquake occurrence (See arrows A1-A3 and B1-B3 similar to FIG. 2 shown in FIG. 20).

  And also in this case, as in the case of the configuration of the second embodiment, it is only necessary to form a bolt insertion hole at the upper end of the wide web portion 2e which is the single wall and to insert the bolt 51. The connection bracket 50 on the ceiling frame hanging member attachment fitting 61 side is only required to be provided at the center of the bottom of the attachment fitting main body 61a to form the bolt insertion hole 52, so that the configuration and attachment are simplified.

  However, the bottom surface of the mounting bracket main body 61a and the upper end surface of the ceiling frame suspension member 2 are abutted with a wide abutting area having a U-shaped cross section. It is high, and bending deformation in the direction perpendicular to the axis at the connecting portion is less likely to occur.

<About the fourth embodiment>
In the ceiling frame suspension structure according to the first embodiment described above, a square cylinder (FIG. 7) having a square cross section made of a lightweight steel material is adopted as the ceiling frame suspension member 2 made of a square steel material, and the upper end portion thereof is adopted. The pair of left and right connecting brackets 50 a and 50 b below the mounting bracket 61 are fitted inside and connected by bolts 51.

  However, the square steel material constituting the ceiling frame suspension member 2 is not limited to such a square tube having a square cross section, but is an equilateral mountain shape made of an angle member having a bowl shape as shown in FIGS. 21 and 22, for example. It can also be made of steel.

  Even in the case of an angle member made of such an equilateral mountain-shaped steel material, in order to have one of the main body walls 2h and the other side wall 2h that is orthogonal to the angle (XY direction), the mutual orthogonal portions are 2g), which is not a closed section like the above-mentioned square cylinder, but has a sufficient compressive load, effective ceiling frame strength improving effect, effective ceiling frame hanging strength improving effect, horizontal excitation An effective seismic force improving action against force can be realized (see arrows A1 to A3 and B1 to B3 similar to FIG. 2 shown in FIG. 22).

  Also in this case, as in the case of the configurations of the second and third embodiments, a bolt insertion hole (2d: not shown) is formed at the upper end of the one side wall portion 2h that is the single wall. ) And the bolt 51 is inserted therethrough, the connection bracket 50 on the ceiling frame suspension member attachment fitting 61 side is provided with only one piece in the center of the bottom of the attachment fitting main body 61a, and the corresponding bolt insertion hole 52 is provided. Since formation is sufficient (see FIG. 18), the configuration and attachment are simplified.

  However, since the bottom surface of the mounting bracket main body 61a and the upper end surface of the ceiling frame suspension member 2 are abutted with a wide contact area in the XY direction having a cross-sectional shape, the integrated body after the connection is made. The degree of conversion is high, and bending deformation in the direction perpendicular to the axis at the connecting portion is less likely to occur.

2 is a ceiling frame suspension member 4 is an oblique reinforcing material (brace material)
10 is H-section steel 10a is H-section steel horizontal mounting edge 50 is connection bracket 50a is connection bracket 50b is connection bracket 51 is bolt 52 is nut 52 is ceiling frame suspension member The mounting bracket 61a is the mounting bracket body 61b is the fitting port 61c is the fastening bolt 61f is the presser plate

Claims (6)

  A suspension member for suspending the ceiling frame from the building structure is formed of a lightweight square steel material, and the ceiling frame is attached by attaching the upper end of the square steel material to the building structure via a square steel material mounting bracket. A ceiling frame hanging structure configured to hang, wherein the building structure has a horizontal square steel mounting edge, and the square steel mounting bracket is connected to the upper end of the square steel. A rectangular box-shaped mounting bracket body that is connected and integrated, a U-shaped fitting opening that is open on the left and right side wall portions of the mounting bracket body toward the mounting edge side of the building structure, and the fitting The fitting is provided on the upper side or the lower side of the joint, and is screwed from the upper side to the lower side or from the lower side to the upper side after being fitted to the square steel material mounting edge of the building structure. A fastening bolt for fixing the body to the mounting edge of the building structure, and a connecting bracket provided at the bottom of the mounting bracket body, and the mounting bracket body is connected to the square steel member via the connection bracket. A ceiling frame hanging structure characterized in that it is connected and integrated into a coaxial structure.   The ceiling frame hanging structure according to claim 1, wherein the square steel material is a square steel material having a cross-sectional cylindrical structure.   2. The ceiling frame suspension structure according to claim 1, wherein the square steel material is a lip groove steel material having a channel structure with a C-shaped cross section.   2. The ceiling frame suspension structure according to claim 1, wherein the square steel material is a channel steel material having a channel structure having a U-shaped cross section.   2. The ceiling frame suspension structure according to claim 1, wherein the square steel material is an equilateral mountain-shaped steel material having a cross-sectional angle structure.   6. The ceiling frame hanging structure according to claim 1, 2, 3, 4 or 5, wherein the connection bracket is formed of a hinge-type connection bracket having a bolt insertion hole.

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