JP2015166648A - U-shaped tube fixture for heat exchanging pile and heat exchanging pile mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide U-shaped tube fixture for a heat exchanging pile in which the pile can be sunk and mounted by a method similar to a general pile mounting method and a heat exchanging tube material is not wound around an outer circumferential surface of a lower pile even if the lower pile is installed through a rotation settlement.SOLUTION: The present invention relates to U-shaped tube fixture 7 for a heat exchanging pile in which a plurality of sets of U-shaped tubes connected at a lower end folded-back part to enable heat exchanging medium to be circulated in a vertical direction are arranged side-by-side and installed at an outer circumference of the pile. The fixture comprises a position setting band 8 that can be fixed at the outer circumference of the pile and U-shaped tube fixing band 9 placed outside the position setting band and mounted to be slidable in a circumferential direction of the pile. U-shaped tubes are mounted to the position setting band fixed to the outer circumference of the pile through U-shaped tube fixing band.

Description

  The present invention relates to a method for installing a heat exchange pile in an excavation hole, and more specifically, a heat exchange pile in which a U-shaped pipe for heat exchange in which a heat exchange medium flows around the outer periphery of the pile body extends in the pile longitudinal direction. The present invention relates to a heat exchanging pile installation method for laying down while rotating to a predetermined position in an excavated hole, and a fixing tool for fixing the U-shaped pipe for heat exchanging to the outer periphery of the pile body.

  It is conventionally known to use a ready-made pile used as a foundation of a building as an underground heat exchanger. As an underground heat exchanger using such a ready-made foundation pile, a heat transfer tube with a coil structure that allows the heat exchange medium to flow around the outside of the ready-made pile is extended in the longitudinal direction, and this is applied to the pile by means of a band. There exists what was made into the structure attached to the outer peripheral surface (for example, patent document 1, patent document 2).

JP 2003-206528 A JP 2007-107200 A

  However, the thing of the said patent document 1 (Unexamined-Japanese-Patent No. 2003-206528) is difficult to join an upper pile, and even if it succeeds to join an upper pile, it will be accompanied by considerable difficulty in connecting a heat exchanger tube. In addition, when the two upper and lower piles that have been joined are laid while rotating into the excavation hole, the connected heat transfer tubes are wound around the outer peripheral surface of the upper pile, making it difficult to install.

  On the other hand, in the said patent document 2 (Unexamined-Japanese-Patent No. 2007-107200), the heat exchange piping which formed the folding | returning part was fixed to the lower side of the side part of the ready-made pile for bottom parts, and the ready-made pile for bottom parts was excavated hole An installation method has been proposed in which the pipe for heat exchange is sequentially drawn out and constructed on the ground side while being lowered along the side of the pile body.

  If it does in this way, construction will become easy only by preparing the wound heat exchange tube material as a reciprocating pair, but the installation is made to sink in the excavation hole while rotating this ready-made pile for the bottom. In adopting the method, the heat exchanging pipe material is wound around the outer peripheral surface of the bottom-made ready-made pile with the rotation of the ready-made pile for the bottom. Therefore, there is a problem that it is not suitable for the installation method of the ready-made pile for the bottom by rotating subsidence in which the heat exchange pipe is installed along the side of the pile body while the ready-made pile for the bottom is rotated in the excavation hole. is there.

  The present invention was made in order to solve the conventional problems as described above, and the pile body can be sunk in the same manner as general pile construction. In addition, the heat exchanging pipe material does not wrap around the outer peripheral surface of the ready-made pile for the bottom part, and a U-shaped pipe fixing tool for heat exchanging piles and a method for installing the heat exchanging pile using this fixing tool are provided. It is intended.

  In order to achieve the above object, the invention according to claim 1 of the present application is such that the supply pipe and the extraction pipe are folded at the lower end so that a heat exchange medium such as antifreeze can be circulated in the vertical direction around the outer periphery of the pile body. A fixture for a U-shaped tube in a heat exchange pile, in which a plurality of U-shaped tubes for a heat exchange medium extending in the longitudinal direction of the pile are arranged in the circumferential direction of the pile, A positioning band that can be fixed to the outer periphery of the U-shaped pipe, and a U-shaped pipe fixing band that is installed outside the positioning band so as to be slidable in the circumferential direction of the pile. A fixture for a U-shaped tube in a heat exchanging pile, wherein the positioning band is fixed to the outer periphery of a pile body so as to be installed via the U-shaped tube fixing band.

  The invention according to claim 2 of the present application is characterized in that the U-shaped tube fixing band includes a fitting portion that is slidable with a concave groove formed in the positioning band in the circumferential direction of the pile. It is a fixture for a letter-shaped tube.

  Further, in the invention according to claim 3 of the present application, the U-shaped tube fixing band includes a fixing portion including a pair of left and right side wall members protruding outward in the diameter of the pile body, and the U-shape is provided in the fixing portion. A fixture for a U-shaped tube, characterized in that a mold tube is installed.

  Further, in the invention according to claim 4 of the present application, the supply pipe and the extraction pipe are continuously connected at the folded portion at the lower end so that the heat exchange medium such as antifreeze can be circulated in the vertical direction around the outer periphery of the pile body. This is a method for installing heat exchanging piles in the excavation hole in which a plurality of sets of U-shaped tubes for heat exchanging medium extending in the direction are mounted side by side in the circumferential direction of the pile. Around the outer periphery, U-shaped pipe fixtures consisting of a positioning band and a U-shaped pipe fixing band are installed at a plurality of locations at desired intervals in the longitudinal direction of the pile, and the folded portion at the lower end of the U-shaped pipe And the other end of the U-shaped pipe located on the ground side of the pile body or the hired pile is slidable in the circumferential direction with respect to the positioning band fixed to the outer periphery of the pile body. U-shaped pipe fixing when installing via pipe fixing band and rotating pile body or hired pile A method of installing the heat exchanger piles, characterized in that without rotating the U-shaped tube attached to the command and to be installed in the drilling hole.

  And the invention which concerns on Claim 5 of this application is the installation method of the heat exchange pile characterized by installing the said pile body in an excavation hole in the state which gave the prestress to the said U-shaped pipe.

  In the fixture of the U-shaped pipe in the heat exchange pile described in claims 1 and 2 of the present invention, the U-shaped pipe for the heat exchange medium installed in the outer periphery of the pile body is fixed to the outer periphery of the pile body. A positioning band made possible and a U-shaped pipe fixing band installed outside the positioning band so as to be slidable in the circumferential direction of the pile, and the U-shaped pipe is connected to the outer periphery of the pile body. The positioning band is fixed to the U-shaped tube fixing band, so that the pile body rotates and the positioning band fixed to the outer periphery rotates. The U-shaped tube for the heat exchange medium does not move in the circumferential direction of the pile body.

  Therefore, even when the pile body is rotated and the heat exchange pile is embedded in the excavation hole, the U-shaped tube for the heat exchange medium provides a heat exchange pile that does not wrap around the outer periphery of the pile body. it can.

  Moreover, in the fixture of the U-shaped pipe in the heat exchange pile according to claim 3 of the present invention, the U-shaped pipe is formed of a pair of left and right side wall members that protrude outward in the diameter direction of the pile body. When the pile body is rotated and the heat exchanging pile is embedded in the excavation hole, the both side wall members of the fixed portion collide with the filler in the excavation hole. As a result, resistance in the direction opposite to the rotation direction of the pile body is given to the U-shaped tube fixing band, and the U-shaped tube for the heat exchange medium further surrounds the outer periphery of the pile body. The structure does not move in the direction.

  Moreover, in the installation method in the excavation hole of the heat exchange pile which concerns on Claim 4 of this invention, In the U-shaped pipe | tube for heat exchange media installed in the outer periphery of the pile body rotated and embedded, A U-shaped pipe fixing band that can slide in the circumferential direction of the pile relative to the positioning band that is fixed to the outer periphery of the pile body, the folded part at the lower end and the other end part located on the ground side of the pile body or the hired pile. When the pile body or hire pile is rotated and embedded, the U-shaped pipe attached to the U-shaped pipe fixing band is installed in the excavation hole without rotating. Since the pile installation method, even when the pile head is in the ground, the U-shaped pipe above the pile head does not come apart and the U-shaped pipe installed on the bottom pile body The folded part at the lower end also does not rotate around the pile. Therefore, the U-shaped pipe does not wrap around the outer peripheral surface of the pile body over the entire length of the pile body, and a heat exchange pile with stable quality can be embedded.

  In addition, by adopting the above heat exchange pile installation method, the upper end of the U-shaped pipe for the heat exchange medium above the pile head, that is, the upper end of the supply pipe and the extraction pipe for the heat exchange medium are in the circumferential direction of the pile. The new supply pipe and take-out installed at the outer periphery of the upper pile respectively at the upper end of the supply pipe and take-out pipe of the U-shaped pipe even when the upper pile is joined The operation | work which connects a pipe | tube can also be performed easily and work efficiency improves.

  Moreover, since the invention of Claim 5 of this application is the installation method of the heat exchange pile which installs a pile body and an employment pile in a drilling hole in the state which gave the U-shaped pipe the prestress, Even when some resistance is generated between the positioning band and the U-shaped tube fixing band when the pile body is rotated and embedded in the excavation hole, the tension applied to the U-shaped tube The U-tube fixing band is more difficult to rotate. Of course, it is not necessary to use a complicated structure such as a hermetically sealed slide structure.

It is a front view of the state which installed the U-shaped pipe | tube for heat exchange media in the outer periphery of a pile body with the fixing tool which concerns on this invention. It is a disassembled perspective view of the positioning band which comprises the fixing tool which concerns on this invention. It is a disassembled perspective view of the U-shaped tube fixing band constituting the fixture according to the present invention. It is a perspective view which shows the process which installs the fixing tool in a pile body. It is a perspective view of the state which installed the fixing tool in the pile body. FIG. 6 is an enlarged partial view of a portion in FIG. 5. It is a disassembled perspective view of 2nd Example of the U-shaped tube fixation band which comprises the fixing tool which concerns on this invention. It is a perspective view which shows the process in which the fixing tool which consists of the U-shaped pipe fixing band of 2nd Example shown in FIG. 7 and the said positioning band is installed in a pile body. It is a perspective view of the state which installed the fixing tool in the pile body. FIG. 10 is an enlarged partial view of a portion B in FIG. 9.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. In the figure, 1 is a pile body, which shows a state in which a lower pile 2 for the bottom having an enlarged portion 2A at the lower end and a state in which an upper pile 3 is connected to a pile head of the lower pile 2, and 4 is the pile body 1. It is a U-shaped pipe installed in the outer periphery of (2, 3).

  The U-shaped pipe 4 has a structure in which a supply pipe 5A and an extraction pipe 5B are continuous at the folded portion 6 at the lower end so that a heat exchange medium such as antifreeze can be circulated in the vertical direction. A plurality of sets (three sets in the drawing) of the U-shaped tubes 4 for the heat exchange medium extending in the longitudinal direction of (2, 3) are arranged in the circumferential direction of the pile, and these are arranged by the fixture 7 on the pile body 1. It is fixed around the outside.

  The fixture 7 is a positioning band 8 that can be fixed to the outer periphery of the pile body 1, and a U-shaped outside the positioning band 8 that is slidable with respect to the positioning band 8. It comprises a mold tube fixing band 9. Each of the positioning band 8 and the U-shaped tube fixing band 9 is a combination of two semicircular positioning band members 8A and 8B and a semicircular U-shaped tube fixing band member 9A and 9B. , 8C and 9C, 9C are formed in a circular shape by tightening bolts 10 and nuts 11, respectively.

  Reference numeral 12 denotes a concave groove formed on the outer peripheral surface of the positioning band 8, and the two semicircular positioning band members 8A and 8B are moved toward the center from the state shown in FIG. , 8C are circumferential grooves formed on the outer peripheral surface of the positioning band 8 when the bolts 10 and nuts 11 are tightened to form a circular shape.

  Reference numeral 13 denotes a fitting portion forming the U-shaped tube fixing band 9, and the upper and lower semicircular ring-shaped members 9D and 9D constituting the U-shaped tube fixing band members 9A and 9B are connected to the connecting member. 9C and 9C are connected to form a circular shape, and the fitting portion 13 of the U-shaped tube fixing band 9 is outside the positioning band 8 and loosely fits in the groove 12 thereof. It is set as the structure which unites.

  With the above-described configuration, the U-shaped tube fixing band 9 positioned outside the positioning band 8 is guided by the fitting portion 13 that loosely fits into the concave groove 12 of the positioning band 8, and The outer periphery of the positioning band 8 can be slid in the circumferential direction. In the figure, reference numeral 14 denotes a fixing portion of the U-shaped tube 4 attached to the U-shaped tube fixing band 9. The fixing portion 14 makes the supply tube 5A and the extraction tube 5B of the U-shaped tube 4 special. Further, it is fixed to the U-shaped tube fixing band 9.

  15A and 15A are a pair of left and right side walls constituting the fixing portion 14 of the U-shaped tube 4. The front end edges of the pair of left and right side walls 15A and 15A are the diameters of the U-shaped tube fixing band 9. Projecting outwardly, the supply pipe 5A and the extraction pipe 5B of the U-shaped pipe 4 are specially positioned between the both side wall parts 15A and 15A and fixed by the fixing part 14. The U-shaped tube 4 is fixed to the U-shaped tube fixing band 9 through the fixing portion 14.

  Reference numeral 20 denotes another embodiment of the U-shaped tube fixing band 9. The difference between the U-shaped tube fixing band 20 and the U-shaped tube fixing band 9 is the structure of the fixing portion of the U-shaped tube 4. The other configurations are the same. More specifically, the U-shaped tube fixing band 20 is formed by combining semicircular U-shaped tube fixing band members 20A and 20B and connecting them in a circular shape as shown in FIG. The fixed portion 21 of the U-shaped tube 4 installed on the U-shaped tube fixing band 20 includes a pair of left and right side wall portions 22A and 22A, and the outside diameter of the U-shaped tube fixing band 20 on both side wall portions 22A and 22A. This is a box-type structure having a structure in which the upper part of the front end edge protruding in the direction is covered with the front wall part 23.

  The U-shaped tube fixing band 20 has the lower end of the supply tube 5A and the extraction tube 5B of the U-shaped tube 4 so that the heat exchange medium such as the antifreeze liquid of the U-shaped tube 4 can be circulated in the vertical direction. It is suitable for use as the fixture 7 of the U-shaped tube 4 installed at the tip of the bottom pile 2 for storing and protecting the folded back portion 6.

  That is, the lower end of the supply pipe 5A and the take-out pipe 5B of the U-shaped tube 4 includes a folded portion 6 connected via a U-shaped connecting member 24. The folded portion 6 is connected to the half box. A configuration in which the folded portion 6 is fixed to the U-shaped tube fixing band 20 by being housed in a fixing portion 21 of the mold and connecting the connecting member 24 and the U-shaped tube fixing band 20 with a string or the like. It is what.

  Accordingly, the folded portion 6 of the supply pipe 5 </ b> A and the extraction pipe 5 </ b> B connected via the connection member 24 is positioned in the half-box type fixing portion 21. As a result, the folded portion 6 can be protected by the both side wall portions 15A and 15A and the front wall portion 23 from external forces received from fillers such as mortar and excavated soil accompanying rotation of the lower pile 2. Even when the positioning band 8 fixed to the lower pile 2 rotates in the same direction as the bottom pile 2, the U-shaped tube fixing band 20 and the U-shaped tube fixed to the U-shaped tube fixing band 20 The folding part 6 does not rotate.

  Accordingly, even when the pile head of the lower pile 2 is in the ground, the U-shaped pipe above the pile head is not separated and even when the upper pile 3 is connected to the lower pile 2, the pile body 1. Since the folded portion 6 at the lower end of the U-shaped tube 4 installed around the outer periphery of the pile body 1 also rotates around the periphery of the pile, the U-shaped tube 4 is wound around the outer peripheral surface of the pile body 1 over the entire length of the pile body 1. There is no sticking.

  Next, the procedure for installing the fixture 7 including the positioning band 8 and the U-shaped pipe fixing band 9 according to the present invention on the outer periphery of the pile body 1 will be described. The semicircular positioning band members 8A and 8B are arranged around the pile body 1 and wound around the pile body 1 in the direction of the pile body 1 from the left and right. Next, by connecting the positioning band members 8A and 8B with bolts 10 and nuts 11 at the connecting members 8C and 8C, the circular positioning band 8 is attached to the outer periphery of the pile body 1 as shown in FIG. Secure to.

  In this way, after fixing the positioning band 8 to the outer periphery of the pile body 1 with a predetermined interval, a semicircular shape separated in the state shown in FIG. As shown in FIG. 4, U-shaped tube fixing band members 9 </ b> A and 9 </ b> B are arranged, and the fitting portions 13 are fitted in the concave grooves 12 of the positioning band 8. Next, the U-shaped tube fixing band members 9A, 9B are connected to the semicircular U-shaped tube fixing band members 9A, 9B by bolts 10 and nuts 11 at the connecting members 9C, 9C. As shown in FIGS. 5 and 6, a circular U-shaped tube fixing band 9 is installed on the outer peripheral side of the positioning band 8.

  In such a procedure, a plurality of fixtures 7 including the positioning band 8 and the U-shaped pipe fixing band 9 are installed around the outer periphery of the pile body 1 at predetermined intervals. In this case, as the fixture 7 installed in the lower part of the lower pile 2, the fixture 7 comprising a combination of the positioning band 8 shown in FIG. 2 and the U-shaped tube fixing band 20 shown in FIG. 7 is used. 8, and the circular U-shaped tube fixing band 20 is positioned by the same method as the circular U-shaped tube fixing band 9 as shown in FIGS. 9 and 10. Installed on the outer peripheral side of the band 8.

  Next, the folded portion 6 at the lower end of the supply pipe 5A and the take-out pipe 5B of the U-shaped pipe 4 is housed in the half box-type fixing section 21 installed at the lower part of the lower pile 2, and the connecting member 24 And the U-shaped tube fixing band 20 are connected by a string or the like, so that the folded portion 6 is fixed to the U-shaped tube fixing band 20. And in the fixture 7 installed above it, the supply pipe 5A of the U-shaped pipe 4 is interposed between the side wall parts 15A, 15A constituting the fixing part 14 of the U-shaped pipe fixing band 9. The extraction pipes 5B are positioned specially, and the supply pipe 5A and the extraction pipe 5B of the U-shaped pipe 4 are fixed to the U-shaped pipe fixing band 9.

  Therefore, when the pile body 1 is set in the excavation hole while rotating, the folded portion 6 at the lower end of the U-shaped pipe 4 fixed to the outer periphery of the lower pile 2 has a mortar filled in the excavation hole. The external force in the direction opposite to the rotation of the lower pile 2 is received from a filler, excavated soil, or the like. In this case, the folded portion 6 can be protected by the side wall portions 15A, 15A of the U-shaped tube fixing band 20, and the positioning band 8 fixed to the lower pile 2 is the same as the lower pile 2. Even when rotating in the direction, the U-shaped tube fixing band 20 and the folded portion 6 of the U-shaped tube 4 fixed to the U-shaped tube fixing band 20 do not rotate.

  In addition, in the fixture 7 installed above it, the supply pipe 5A of the U-shaped pipe 4 is interposed between the side wall parts 15A, 15A constituting the fixing part 14 of the U-shaped pipe fixing band 9. The extraction pipes 5B are positioned exceptionally. Therefore, the supply pipe 5A and the extraction pipe 5B of the U-shaped pipe 4 are installed via the U-shaped pipe fixing band 9 installed so as to be slidable in the circumferential direction with respect to the positioning band 8. Therefore, even if the pile body 1 rotates, the supply pipe 5A and the extraction pipe 5B of the U-shaped pipe 4 do not rotate.

DESCRIPTION OF SYMBOLS 1 Pile body 2 Lower pile 3 Upper pile 4 U-shaped pipe 5A Supply pipe 5B Take-out pipe 6 Folding part 7 Fixing tool 8 Positioning band 8A / 8B Semicircular positioning band member 8C / 9C Connecting member 9.20 U-shaped Tube fixing band 9A / 9B Semi-circular U-shaped tube fixing band member 9D Ring member 10 Bolt 11 Nut 13 Fitting portion 14, 21 Fixing portion 15A / 22A Side wall portion 23 Front wall portion 24 Connecting member

Claims (5)

  A U-shape for the heat exchange medium in which the supply pipe and the take-out pipe are continuous at the folded part at the lower end so that the heat exchange medium such as antifreeze can be circulated in the vertical direction around the outer periphery of the pile body. A fixture for a U-shaped pipe in a heat exchange pile in which a plurality of sets of pipes are installed side by side in the circumferential direction of the pile, a positioning band that can be fixed to the outer periphery of the pile body, and an outer side of the positioning band A U-shaped tube fixing band installed so as to be slidable in the circumferential direction of the pile, and the U-shaped tube is attached to the positioning band fixed to the outer periphery of the pile body. A fixture for a U-shaped tube in a heat exchanging pile, which is formed so as to be installed through a fixing band.   The U-shaped pipe in a heat exchanging pile according to claim 1, wherein the U-shaped pipe fixing band includes a slidable fitting portion and a concave groove formed in the positioning band in the circumferential direction of the pile. Fixing tool.   The U-shaped tube fixing band includes a fixing portion composed of a pair of left and right side wall members protruding outward in the diameter direction of the pile body, and the U-shaped tube is installed in the fixing portion. The fixture of the U-shaped pipe | tube in the heat exchange pile of Claim 1 or 2 to do.   A U-shape for the heat exchange medium in which the supply pipe and the take-out pipe are continuous at the folded part at the lower end so that the heat exchange medium such as antifreeze can be circulated in the vertical direction around the outer periphery of the pile body. A method for installing heat exchange piles in a drilling hole in which multiple sets of mold pipes are mounted side by side in the circumferential direction of the pile, and a positioning band and a U-shaped pipe fixing band around the outer periphery of the pile body to be rotated and embedded A plurality of fixtures for U-shaped pipes are installed at a desired interval in the longitudinal direction of the pile, and the U-shaped pipe is positioned at the folded portion at the lower end of the U-shaped pipe and on the ground side of the pile body or the hired pile. The other end of the U-shaped pipe is installed via the U-shaped pipe fixing band that is slidable in the circumferential direction of the pile with respect to the positioning band fixed to the outer periphery of the pile body. When rotating and embedding, do not rotate the U-shaped tube attached to the U-shaped tube fixing band , Method of installing the heat exchanger piles, characterized in that as installed in the drilling hole.   Prestress is applied between the folded portion at the lower end of the U-shaped pipe and the other end of the U-shaped pipe located on the upper side of the pile body or the hired pile, and the pile body or the hired pile is rotated in this state. The heat exchange pile installation method according to claim 4, wherein the heat exchange pile is embedded in the excavation hole.

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