JP5276285B2 - Thin plate welding structure - Google Patents

Description

  The present invention is a component of a structure such as a liquid fuel (for example, LNG (liquefied natural gas), LPG (liquefied petroleum gas), etc.), a liquid such as water, or a tank that safely stores a gas such as fuel gas. The present invention relates to a thin plate piece welding structure for welding a thin plate piece and two adjacent thin plate pieces.

  The structure such as the tank using the thin plate pieces is formed by joining a plurality of thin plate pieces by welding. That is, a structure such as a tank has a thin plate piece as a constituent element.

  Patent Document 1 describes a welding jig (clogs 39) for adjusting the distance between two thin plate pieces to be welded (groove root distance) (see FIG. 7 of Patent Document 1). Thereby, welding of a thin piece can be facilitated.

JP-A-9-285894

  However, Patent Document 1 describes a welding jig (clogs 39), but does not disclose anything about reinforcing a thin plate piece. The thin plate piece has a disadvantage that it is difficult to weld due to deformation during welding because the thickness of the thin plate piece is small with respect to the area of the front surface or the back surface.

  The present invention has been made in view of the above points, and an object thereof is to provide a thin plate piece that is easy to weld while preventing deformation and a thin plate piece welding structure that facilitates welding of two adjacent thin plate pieces. There is.

The structure for thin plate piece welding according to claim 1 is:
A structure for welding thin plate pieces for welding the butted portions of two adjacent thin plate pieces,
A thin plate piece main body provided with a protrusion having a hole on the side along this end portion so as to be detachable by welding or the like in the vicinity of the end portion of the outer periphery of the thin plate piece,
In substantially L-shaped cross-section, of the L-shaped space portion of the thin piece body and to face the direction of the end portion along this end in the vicinity of the end portion, the first through the protrusion A through hole is provided in the lateral portion of the reinforcing member, and after passing the protruding portion through the first through hole, the first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is attached to the thin plate piece main body. A reinforcing member that is detachably fixed ;
The adjacent two thin plate pieces to which the reinforcing member is fixed have a second through hole at a position corresponding to the protrusion, and the first fitting member is inserted into the protrusion through the second through hole. By fitting into the holes of the two portions, the two adjacent thin plate pieces are fixed to the two adjacent thin plate pieces between the vertical portions of the reinforcing members, and the inner wall surface of the second through hole and the protrusion A welding jig capable of adjusting the interval between the abutting portions of the two adjacent thin plate pieces by fitting a second fitting member between the outer surface or the inner surface of the portion ;
It is characterized by having.

The thin plate piece welding structure according to claim 2 comprises:
A structure for welding thin plate pieces for welding the butted portions of two adjacent thin plate pieces,
A thin plate piece main body provided with a protrusion having a hole on the side along this end portion so as to be detachable by welding or the like in the vicinity of the end portion of the outer periphery of the thin plate piece,
In substantially L-shaped cross-section, of the L-shaped space portion of the thin piece body and to face the direction of the end portion along this end in the vicinity of the end portion, the first through the protrusion A through hole is provided in the lateral portion of the reinforcing member, and after passing the protruding portion through the first through hole, the first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is attached to the thin plate piece main body. A reinforcing member that is detachably fixed ;
The two adjacent thin plate pieces to which the reinforcing member is fixed have a bridge portion and a support portion that supports the bridge portion, and the two adjacent thin plate pieces straddle the reinforcing member that the adjacent two thin plate pieces respectively have. The bridging portions are arranged on two adjacent thin plate pieces, the reinforcing members abut on the bottom surfaces of the bridging portions, and a third portion is provided between the inner surface of the support portion and the outer surface of the reinforcing member. A welding jig capable of adjusting the interval between the butted portions of the two adjacent thin plate pieces by fitting a fitting member ;
It is characterized by having.

According to the structure for thin plate piece welding according to claim 1,
A thin plate piece main body provided with a protrusion having a hole on the side along this end portion so as to be detachable by welding or the like in the vicinity of the end portion of the outer periphery of the thin plate piece,
In substantially L-shaped cross-section, of the L-shaped space portion of the thin piece body and to face the direction of the end portion along this end in the vicinity of the end portion, the first through the protrusion A through hole is provided in the lateral portion of the reinforcing member, and after passing the protruding portion through the first through hole, the first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is attached to the thin plate piece main body. A reinforcing member that is detachably fixed ;
So that
By providing the projecting portion in a removable manner, the projecting portion can be removed after welding the butted portion of the thin plate piece.
Moreover, the order reinforcing member that is detachably firmly adhered and fixed without welding to the thin piece body, the thin plate piece is reinforced it is possible to prevent the deformation of the thin plate piece by the reinforcing member, further the reinforcing member Since the cross section is substantially L-shaped, it is easy to hold down.
In addition, the reinforcing member can prevent deformation (maintenance of shape, maintenance of curvature, etc.) during conveyance of the thin plate piece.
These reinforcing members and protrusions assist in assembling the tank (structure) during welding, making it easy to align the abutting portions of adjacent thin plate pieces, align the shaft center, hold a perfect circle, etc. It becomes possible to prevent deformation (maintenance of shape, maintenance of curvature, prevention of distortion, etc.) during welding of the butt portion.
Furthermore, since a work space for welding can be secured above the end portions (grooves) of two adjacent thin plate pieces facing each other, welding is easy to perform, and a thin plate piece that is easy to weld while preventing deformation is obtained. .
In addition, a second through hole is provided at a position corresponding to the projecting portion of each of the two adjacent thin plate pieces to which the reinforcing member is fixed, and the first fitting member is inserted through the second through hole. By fitting into the holes of the protrusions, the two adjacent thin plate pieces are fixed to the two adjacent thin plate pieces between the vertical portions of the reinforcing members, and the inner wall surface of the second through hole, since having a welding jig capable of adjusting the distance between the abutting portions of the two sheet pieces said adjacent fitted a second fitting member between the outer surface or inner surface of the protrusion,
Since the inner wall surface of the second through-hole can be suppressed by fitting the first fitting member into the hole of the protrusion through the second through-hole of the welding jig, the first fitting member is adjacent By fixing the first fitting member deeply, the welding jig is more firmly fixed, and the two reinforcing members of the thin plate pieces are fixed between the vertical portions of the substantially L-shaped section. It is possible to easily match the heights of the butted portions of adjacent thin plate pieces.
Further, by adjusting the second fitting member between the inner wall surface of the second through hole of the welding jig and the outer surface or inner surface of the projection, the adjustment of the gap between the butted portions of the thin plate pieces can be adjusted. Since it can be performed easily and the positions of the butted portions of the adjacent thin plate pieces can be easily aligned, welding of the butted portions of the two adjacent thin plate pieces can be facilitated. In this thin plate piece welding structure, the protrusion is effectively used so that welding can be easily performed.

According to the structure for thin plate piece welding according to claim 2 ,
A thin plate piece main body provided with a protrusion having a hole on the side along this end portion so as to be detachable by welding or the like in the vicinity of the end portion of the outer periphery of the thin plate piece,
In substantially L-shaped cross-section, of the L-shaped space portion of the thin piece body and to face the direction of the end portion along this end in the vicinity of the end portion, the first through the protrusion A through hole is provided in the lateral portion of the reinforcing member, and after passing the protruding portion through the first through hole, the first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is attached to the thin plate piece main body. A reinforcing member that is detachably fixed ;
So that
By providing the projecting portion in a removable manner, the projecting portion can be removed after welding the butted portion of the thin plate piece.
Moreover, the order reinforcing member that is detachably firmly adhered and fixed without welding to the thin piece body, the thin plate piece is reinforced it is possible to prevent the deformation of the thin plate piece by the reinforcing member, further the reinforcing member Since the cross section is substantially L-shaped, it is easy to hold down.
In addition, the reinforcing member can prevent deformation (maintenance of shape, maintenance of curvature, etc.) during conveyance of the thin plate piece.
These reinforcing members and protrusions assist in assembling the tank (structure) during welding, making it easy to align the abutting portions of adjacent thin plate pieces, align the shaft center, hold a perfect circle, etc. It becomes possible to prevent deformation (maintenance of shape, maintenance of curvature, prevention of distortion, etc.) during welding of the butt portion.
Furthermore, since a work space for welding can be secured above the end portions (grooves) of two adjacent thin plate pieces facing each other, welding is easy to perform, and a thin plate piece that is easy to weld while preventing deformation is obtained. .
Moreover, it has a bridge | bridging part and the support part which supports this bridge | bridging part with respect to the said adjacent two thin plate piece which fixed this reinforcement member, and straddles the said reinforcement member which each said two adjacent thin plate pieces each has. The bridging portions are disposed on the two adjacent thin plate pieces, the reinforcing members abut on the bottom surfaces of the bridging portions, respectively, and between the inner surface of the support portion and the outer surface of the reinforcing member, since having a welding jig capable of adjusting the distance between the abutting portions of the two sheet pieces said adjacent fitted three telescoping member,
If the height of the support part of the bridge | crosslinking part of a welding jig and the vertical part of a reinforcement member is also made the same, if the upper surface of the reinforcement member of the thin sheet piece adjacent to the bottom face of a bridge | crosslinking part is contacted, adjacent thin plate piece The height of the butt portion can be matched, and this facilitates welding.
Further, by fitting the third fitting member between the inner surface of the support portion of the welding jig and the outer surface of the reinforcing member, the interval between the butted portions of the thin plate pieces can be easily adjusted, and adjacent to each other. Since the positioning of the butted portions of the thin plate pieces can be easily performed, welding of the butted portions of the two adjacent thin plate pieces can be facilitated. In this thin plate piece welding structure, a reinforcing member is effectively used so that welding can be easily performed.

  An example of an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same, corresponding, and generic items will be described with the same reference numerals. In addition, when there are a plurality of similar, corresponding, or generic items in the drawings, only some of them are denoted by reference numerals. In addition, this invention is not limited only to the following embodiment. It goes without saying that the embodiments can be appropriately modified without departing from the gist of the present invention.

  Drawing 1 is an explanatory view explaining the situation at the time of joining a thin piece concerning an example of the present invention by welding in a rock cavity.

  In the present embodiment, a thin plate piece 10 that is a component (that is, a component) of a horizontal cylindrical tank 35 (see a two-dot chain line) provided in a cavity 33 in the rock 31 will be described. The thin plate piece 10 may be a thin plate piece of a structure such as a tank (for example, a storage tank such as a vertical cylindrical tank or a spherical tank, a tank to which external pressure or internal pressure is applied) or a pipe.

  The gantry 25 is formed in the cavity 33 in the rock 31. The thin plate 10 is joined on the gantry 25 by welding to form a cylindrical portion of the horizontal cylindrical tank 35.

  FIG. 2 is a view showing a thin plate piece according to an example of the present invention. FIG. 3 is a schematic cross-sectional view of a state in which thin plate pieces according to an example of the present invention are butted together. As for the reference numerals in FIG. 3, the predetermined reference numerals such as 12 are given generically.

  The thin plate piece 10 includes a thin plate piece main body 11, a reinforcing member 12 (generically referring to 12 a, 12 b, 12 c, and 12 d. The same shall apply hereinafter), a protruding portion 13, and a first fitting member 14. These are formed of metal or the like. The reinforcing member 12, the protrusion 13, the first fitting member 14, and the like are shown on the inner surface side of the thin plate piece body 11 (the inner wall surface side when a cylindrical tank is formed).

  Since the thin plate piece main body 11 exemplifies the component body portion of the horizontal cylindrical tank 35, the thin plate piece main body 11 is rectangular and has a curved surface (curved in FIG. 3 as a flat surface). In particular, when the thin plate body 11 is a cylindrical part, it is curved in the circumferential direction of the cylinder. In addition, when the thin plate piece main body 11 is a spherical shell part, the reinforcing member 12 and the like are also bent in accordance with the shape of the thin plate piece main body 11 so as to be bent along the spherical surface shape.

  The thin plate body 11 is provided with a protrusion 13 detachably along the end 111a (111b, 111c, or 111d) in the vicinity of the outer end 111a (111b, 111c, or 111d). This protrusion 13 has a hole 13a on its side. In the present embodiment, the protrusion 13 is a square piece. By providing the protrusion 13 so as to be detachable, the protrusion 13 can be removed after the thin plate 10 is welded.

  The square piece is a hexagonal rectangular parallelepiped made of steel, and a hole 13a having a required diameter in which the first fitting member 14 can be fitted in the center of the hexagonal rectangular parallelepiped (through a circular cross section here). Corresponding to the cylindrical hole). ). In addition, you may form the hexagonal rectangular parallelepiped external appearance shape of a square piece in a flat plate shape.

  In the present embodiment, the first fitting member 14 is a tapered pin (for example, a substantially conical shape (including a conical shape), but is not limited thereto, and may be a substantially polygonal pyramid shape such as a square arrow), that is, a common name. Consists of borocin. The first fitting member 14 is fitted into (inserted into) the hole 13a.

  The reinforcing member 12 is made of, for example, an angle material. The reinforcing member 12 has a substantially L-shaped cross section (including an L shape) having a horizontal lateral portion 122 and a vertical longitudinal portion 124. The reinforcing member 12 is a generic term for the first through hole 121 (generally referred to as 121a, 121b, 121c, 121d; the same shall apply hereinafter) through which the protruding part 13 is passed and the lateral part 122 (122a, 122b, 122c, 122d). The same shall apply hereinafter). The first through hole 121 is provided at a position corresponding to the protruding portion 13 when the reinforcing member 12 is fixed to the thin plate body 11. And the 1st through-hole 121 becomes a magnitude | size and shape which can let the projection part 13 pass.

After the protrusion 13 is passed through the first through hole 121, the first fitting member 14 is detachably fitted into (inserted into) the hole 13 a of the protrusion 13, and the reinforcing member 12 is attached to the inner surface side of the thin plate body 11. Removably fix to. At this time, the L-shaped space portion 123 (the L-shaped space portion 123 (inside the both wall surfaces of the horizontal portion 122 and the vertical portion 124 of the reinforcing member 12) so that the vertical portion 124 of the reinforcing member 12 is parallel to the thin plate body 11 123 a, 123 b, 123 c, and 123 d are collectively referred to as the same, and the same is applied to the end portion 111 (111 a, 111 b, 111 c, and 111 d are collectively referred to below). That is, the reinforcing member 12 is fixed to the thin plate piece main body 11 so that the vertical portion 124 is located inside the thin plate piece main body 11. By passing the protrusion 13 through the first through-hole 121 and then detachably fitting the first fitting member 14 into the hole 13a of the protrusion 13 to fix the reinforcing member 12 to the thin plate body 11 detachably. The reinforcing member 12 can be easily attached to and detached from the thin plate piece main body 11. And the reinforcement member 12 can be easily fixed to the thin plate piece main body 11, and the reinforcement member 12 can be easily removed after welding the thin plate piece 10. FIG. The reinforcing member 12 is mainly fixed at the time of welding. When the thin plate piece 10 is conveyed, the reinforcing member 12 may not be fixed as necessary. The reinforcing member 12 can be attached to and detached from the thin plate piece body 11 as required by making the reinforcing member 12 easily attachable to and detachable from the thin plate piece body 11. Thereby, the handling at the time of conveyance of the thin plate piece 10 becomes easy.
The reinforcing member 12 also serves as a reinforcing material and a frame for preventing buckling and the like when placing concrete outside the tank 35. If the protrusions 13 are further provided in a plurality of rows, the reinforcing member 12 can be further added. If the protrusion 13 is provided on the other thin plate body 11 in accordance with the reinforcing member 12, the reinforcing member 12 can be used on the other thin plate body 11 and the reinforcing member 12 can be reused.

  The reinforcing member 12a is arranged so that the L-shaped space portion 123a faces the end portion 111a of the thin plate piece main body 11 and extends along the end portion 111a in the vicinity of the end portion 111a (the end portion 111a (the thin plate main body 11). And is fixed to the thin plate piece main body 11 so as to be substantially parallel to the one side). The same applies to the reinforcing members 12b, 12c, or 12d. In this case, the space portion 123a becomes the space portion 123b, 123c, or 123d, and the end portion 111a becomes the end portion 111b, 111c, or 111d. Such a reinforcing member 12 makes it possible to prevent deformation (maintenance of shape, maintenance of curvature, etc.) during conveyance of the thin plate piece 10. Moreover, deformation prevention (shape maintenance, curvature maintenance, distortion prevention, etc.) at the time of welding of the thin plate piece 10 becomes possible. Further, the reinforcing member 12, the protruding portion 13 and the like assist in assembly of a tank (structure) such as welding and facilitate alignment, axial alignment, perfect circle maintenance, and the like. Further, since the reinforcing member 12 has a substantially L-shaped cross section, it is easy to hold down.

  Since the L-shaped space 123 is directed in the direction of the end portion 111 of the thin plate piece main body 11, a space is formed above the butting portion (groove) of the thin plate piece 10 (see FIG. 3), so a welding work space is provided. Therefore, the thin plate material 11 can be easily welded.

  The reinforcing member 12a (12b, 12c, or 12d) has a substantially L-shaped cross section, and the L-shaped space portion 123a (123b, 123c, or 123d) is an end portion 111a (111b, 111c, or 111d) of the thin plate body 11. ) And in the vicinity of the end 111a (111b, 111c, or 111d) of the thin plate body 11 so as to be along the end 111a (111b, 111c, or 111d). For the first time, it is possible to obtain a thin piece that is easy to weld while preventing deformation.

  The reinforcing member 12 is provided in the circumferential direction of the curved surface of the thin plate piece main body 11 (see the reinforcing members 12a and 12c) and in the direction perpendicular to the circumferential direction (see the reinforcing members 12b and 12d). Since deformation mainly occurs in the circumferential direction, the reinforcing member 12 may be provided in the circumferential direction of the curved surface of the thin plate body 11 (see the reinforcing members 12a and 12c).

  FIG. 4 is a view showing an example of a first thin plate piece welding structure according to the present invention. The reference numerals in FIG. 4 are given generically for predetermined items such as 12. In addition, hatching indicating a cross section is omitted.

  The first thin plate piece welding structure is a thin plate piece welding structure for welding two adjacent thin plate pieces 10. The first thin plate piece welding structure includes the second through holes 401 at positions corresponding to the two adjacent thin plate pieces 10 described above and the two protruding portions 13 respectively included in the two adjacent thin plate pieces 10. The two thin plate pieces 10 which are adjacent to each other by fitting the first fitting member 14 into the hole 13a of the protruding portion 13 through the second through hole 401 have two longitudinal members of the reinforcing member 12 respectively. The second fitting member is fixed to the two thin plate pieces 10 adjacent to each other between the portions 124, and is inserted between the inner wall surface 401 a of the second through hole 401 and the outer surface 13 b or the inner surface 13 c of the protruding portion 13. 20, and a welding jig 40 capable of adjusting the interval between two adjacent thin plate pieces 10 (groove interval).

The welding jig 40 is formed of a metal plate or the like having a predetermined thickness, and has a predetermined shape, for example, a rectangle as in the present embodiment. The second through hole 401 is formed in a rectangular shape, a circular shape, or the like. By fitting the first fitting member 14 in the hole 13a of the protrusion 13 (see FIG. 3) via the second through-hole 401 of the welding jig 40, of the second through-hole 401 Since the wall surface 401a is restrained, the first fitting member 14 is fixed between the vertical portions 124 having a substantially L-shaped cross section of the two reinforcing members 12 of the adjacent thin plate pieces 10.

  When the first fitting member 14 is configured by a taper pin or the like, the welding jig 40 is more firmly fixed by deeply fitting the first fitting member 14 and adjacent to each other during welding. The heights of the thin plate pieces 10 can be easily adjusted. The second fitting member 20 is configured by, for example, a square pyramid shaped square arrow or the like.

The first thin plate piece welding structure (the thin plate piece 10 and the welding jig 40 and the like) is formed in the above-described structure of the thin plate piece 10 and the welding jig 40 so that the second through-hole 401 is formed. By fitting the second fitting member 20 between the inner wall surface 401a and the outer surface 13b or the inner surface 13c of the protruding portion 13, it is possible to easily adjust the interval between the butted portions of the two adjacent thin plate pieces 10. Since the positioning of the butted portions of the adjacent thin plate pieces 10 can be easily performed, welding of the butted portions of the two adjacent thin plate pieces 10 can be facilitated. In the first thin plate piece welding structure, the protrusion 13 is effectively used so that welding can be easily performed.

  FIG. 5 is a view showing an example of a second thin plate piece welding structure according to the present invention. The reference numerals in FIG. 5 are given generically for predetermined things such as 12 and the like.

  The second thin plate piece welding structure is a thin plate piece welding structure for welding two adjacent thin plate pieces 10. The second thin plate piece welding structure has two adjacent thin plate pieces 10 described above, a bridging portion 50a, and a support portion 50b that supports the bridging portion 50a, and the two adjacent thin plate pieces 10 each have. It arrange | positions at the two thin plate pieces 10 adjacent so that the upper part of the two reinforcement members 12 may be straddled, and the two reinforcement members 12 of the thin plate piece 10 adjacent to the bottom face 50ab of the bridge | bridging part 50a each contact | abut, and the inner side of the support part 50b The distance between the two adjacent thin plate pieces 10 can be adjusted by fitting the third fitting member 30 between the surface 50bb of the second member and the outer surface 124p of the reinforcing member 12 (the outer surface 124p of the vertical portion 124). A welding jig 50.

  The welding jig 50 is formed in a structure in which the interval between the support portions 50b is longer than the interval between the vertical portions 124 of the two reinforcing members 12. The welding jig 50 is formed of a metal plate having a predetermined thickness and is formed in a predetermined shape.

In the welding jig 50, the height of the support portion 50b is equal to or lower than the height of the vertical portion 124 of the reinforcing member 12, and the reinforcing members 12 of the two thin plate pieces 10 adjacent to the bottom surface 50ab of the bridging portion 50a are used. Each of the upper surfaces 124c is formed so as to be in contact with each other. Further, by making the heights of the two support portions 50b the same and the heights of the vertical portions 124 of the reinforcing member 12, the upper surface 124c of the reinforcing member 12 of the thin plate piece 10 adjacent to the bottom surface of the bridging portion 50a is abutted . If they are brought into contact with each other, the heights of the abutting portions of the adjacent thin plate pieces 10 can be adjusted, thereby facilitating the welding of the abutting portions of the two thin plate pieces 10 .

  The 3rd fitting member 30 is comprised, for example by a square arrow etc., and the adjacent thin plate piece 10 approaches as the 3rd fitting member 30 is fitted.

The second thin plate piece welding structure (the thin plate piece 10, the welding jig 50, etc.) is formed in the above-described structure, so that the inner surface 50bb of the support portion 50b and the outer surface 124p of the reinforcing member 12 (vertical). By fitting the third fitting member 30 between the outer surface 124p) of the portion 124, the interval between the two thin plate pieces 10 adjacent to each other can be easily adjusted, and the butt portion of the adjacent thin plate pieces 10 can be adjusted. Therefore, it is possible to easily weld the butted portions of two adjacent thin plate pieces 10 . In the second thin plate piece welding structure, the reinforcing member 12 is effectively used so that welding can be easily performed.

  The welding jig 50 has a convex portion 50c on the substantially central lower surface of the bridging portion 50a. The convex portion 50c is formed by fitting the third fitting member 30 between the surface of the outer side 50cb of the convex portion 50c and the inner surface of the reinforcing member (the inner surface 124q of the vertical portion 124) and adjacent thin plate pieces 10. The interval is formed to be adjustable. Thereby, although not shown, as the third fitting member 30 is fitted, the adjacent thin plate pieces 10 move away.

  In the first and second thin plate piece welding structures shown in FIGS. 4 and 5, the welding jigs 40 and 50 can be easily formed in the above structure, and can be formed of a lightweight material. The welding jigs 40 and 50 and the second fitting member 20 or the third fitting member 30 can be used for positioning, skin alignment, axial alignment, and the like during welding. Further, it becomes easy to maintain a perfect circle of the cylindrical portion during welding and finely adjust the interval between the thin plate pieces 10 (groove route interval). Furthermore, the welding jigs 40 and 50 can prevent deformation (distortion) of the thin plate piece 10 during welding. Moreover, a tank etc. can be constructed | assembled with sufficient workability | operativity by said thin plate piece 10 or the structure for 1st thru | or 2nd thin plate piece welding.

  The thin plate piece and the structure for welding the thin plate piece according to the present invention are not limited to the tank in the rock cavity, but welds the thin plate piece that is a constituent element of the tank installed on the ground or underground and the two adjacent thin plate pieces. In addition, it is applicable not only to horizontal cylindrical tanks, but also to tanks of various shapes such as vertical cylindrical tanks and spherical tanks, and structures where external and internal pressures are applied. can do.

It is explanatory drawing explaining the condition at the time of joining the thin-plate piece which concerns on an example of this invention within a rock cavity by welding. It is a figure which shows the thin-plate piece which concerns on an example of this invention. It is a schematic sectional drawing of the state which matched the thin plate piece which concerns on an example of this invention. It is a figure which shows an example of the structure for the 1st thin plate piece welding which concerns on this invention. It is a figure which shows an example of the structure for the 2nd thin plate piece welding which concerns on this invention.

Explanation of symbols

10 Thin plate
11 Thin plate body
12 Reinforcing member
13 Protrusion
13a hole
13b outer surface
13c inner surface
14 First fitting member
20 Second fitting member
30 Third fitting member
40 Welding jig
50 Welding jig
50a Cross-linking part
50b Support part
50ab bottom
50bb inner surface
121 First through hole
122 Horizontal
123 Space
124 Vertical
124p outer surface
124q inner surface
401 Second through hole
401a inner wall surface

Claims (2)

A structure for welding thin plate pieces for welding the butted portions of two adjacent thin plate pieces,
A thin plate piece main body provided with a protrusion having a hole on the side along this end portion so as to be detachable by welding or the like in the vicinity of the end portion of the outer periphery of the thin plate piece,
In substantially L-shaped cross-section, of the L-shaped space portion of the thin piece body and to face the direction of the end portion along this end in the vicinity of the end portion, the first through the protrusion A through hole is provided in the lateral portion of the reinforcing member, and after passing the protruding portion through the first through hole, the first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is attached to the thin plate piece main body. A reinforcing member that is detachably fixed ;
The adjacent two thin plate pieces to which the reinforcing member is fixed have a second through hole at a position corresponding to the protrusion, and the first fitting member is inserted into the protrusion through the second through hole. By fitting into the holes of the two portions, the two adjacent thin plate pieces are fixed to the two adjacent thin plate pieces between the vertical portions of the reinforcing members, and the inner wall surface of the second through hole and the protrusion A welding jig capable of adjusting the interval between the abutting portions of the two adjacent thin plate pieces by fitting a second fitting member between the outer surface or the inner surface of the portion ;
A thin plate piece welding structure characterized by comprising: A structure for welding thin plate pieces for welding the butted portions of two adjacent thin plate pieces,
A thin plate piece main body provided with a protrusion having a hole on the side along this end portion so as to be detachable by welding or the like in the vicinity of the end portion of the outer periphery of the thin plate piece,
In substantially L-shaped cross-section, of the L-shaped space portion of the thin piece body and to face the direction of the end portion along this end in the vicinity of the end portion, the first through the protrusion A through hole is provided in the lateral portion of the reinforcing member, and after passing the protruding portion through the first through hole, the first fitting member is fitted into the hole of the protruding portion, and the reinforcing member is attached to the thin plate piece main body. A reinforcing member that is detachably fixed ;
The two adjacent thin plate pieces to which the reinforcing member is fixed have a bridge portion and a support portion that supports the bridge portion, and the two adjacent thin plate pieces straddle the reinforcing member that the adjacent two thin plate pieces respectively have. The bridging portions are arranged on two adjacent thin plate pieces, the reinforcing members abut on the bottom surfaces of the bridging portions, and a third portion is provided between the inner surface of the support portion and the outer surface of the reinforcing member. A welding jig capable of adjusting the interval between the butted portions of the two adjacent thin plate pieces by fitting a fitting member ;
A thin plate piece welding structure characterized by comprising: