JP5829151B2 - Connection structure between workpiece and pile - Google Patents

Description

  The present invention relates to a connection structure between a workpiece and a pile that supports the workpiece.

  As a foundation of a work set up on the ground such as a solar panel or a signboard, a direct foundation made of concrete is generally adopted. However, the direct foundation requires time-consuming work such as excavating the ground to a predetermined depth and installing a formwork. In particular, when the ground near the ground surface is soft, a large foundation is required to suppress the settlement and inclination of the workpiece, which causes a problem in terms of cost. Further, when the foundation is removed along with the removal of the workpiece, there is a problem that the foundation removal work is costly.

  Against this background, recently, construction methods based on small-diameter steel pipe piles are often used. However, in steel pipe pile burial construction, it is inevitable that pile core misalignment (the burial position of the pile deviates from the normal position as the construction position) will occur due to the ground. Generally, it is said that the construction error in the horizontal direction of the small-diameter steel pipe pile is generated up to about 30 mm. Moreover, it is said that the construction error in the vertical direction occurs about ± 5 mm. For this reason, the connection method which can cope with these construction errors is calculated | required.

  As one of the connection methods, for example, a connection structure is proposed in which a construction joint board is attached between the head of a steel pipe pile driven into the ground and the base plate at the lower end of a pillar of a building structure. (See Patent Document 1).

JP 2010-168810 A

  The above-described joint structure for connection structure is mainly composed of a flat plate-like support plate fixed to the pile tip of the steel pipe pile, and an adjustment connection plate fixed to the base plate at the lower end of the column of the building structure. Is done. The adjustment connecting plate plays the role of connecting and fixing the column of the building structure to the support plate by adjusting the horizontal displacement and inclination, and on the surface of the support plate according to the planned installation position of the column bottom during construction After adjusting the movement, the welding is performed on the support plate. The support plate has a square shape, and the length of one side thereof is set to be several times the diameter of the pile tip of the steel pipe pile so as to cope with the horizontal misalignment of the buried steel pipe pile.

  However, in the connection structure described above, the length of one side of the support plate is set to be several times the diameter of the pile tip of the steel pipe pile in order to cope with the horizontal misalignment of the buried steel pipe pile. It is large and has a problem in terms of cost.

  Moreover, in the connection structure mentioned above, after embedding the steel pipe pile, the pile tip of the steel pipe pile protruding from the ground surface is cut horizontally at a desired length (height), and the vertical direction generated when embedding the steel pipe pile It corresponds to the error (pile head height error), but it also has the problem that it is difficult to carry out accurately as in the case of horizontal cutting work in a factory, and tilt errors are likely to occur.

  The present invention does not require upsizing and does not require on-site horizontal cutting work, and the work of connecting the workpiece and the pile is easy, and the construction time can be shortened and the construction cost can be reduced. It aims at providing the connection structure of a workpiece and a pile.

The connection structure according to claim 1 of the present invention is a connection structure between a workpiece and a cylindrical pile that supports the workpiece, and one end of which is attached to the frame of the workpiece and hangs vertically. a shaft, accepting the other end portion of the connecting shaft hanging down, a connection space with arranged bottom lid that the head of the pile, is filled in the connection space unit, the other end portion of the connecting shaft a fixing member for fixing in the coupling space portion, wherein arranged on the inner wall surface of the connecting space, and the movement preventing member in which the fixing member is prevented from moving in the connection space, disposed on the other end portion of the connecting shaft The connection space portion accepts a construction error in a range that can be handled by the inner diameter dimension among the construction errors in the horizontal direction of the pile generated when the pile is buried, and the retaining member Is the connecting shaft at a position near one end in the long side direction. It has an eccentric hole for mounting, and rotates the connection shaft as a fulcrum according to the construction error in the horizontal direction of the pile, and the other end side in the long side direction is directed toward the center portion side of the connection space portion. It is fixed in the connection space part by the fixing member together with the connection shaft .

  According to the connection structure of the present invention, it is possible to connect the head of the pile and the work platform without any trouble even if a construction error occurs when the pile is buried, and without increasing the size, the workpiece and The connection work with the head of the pile is easy, and it is possible to reduce the construction time and the construction cost.

It is a longitudinal cross-sectional view of the connection structure M used as the basis of 1st Example of the connection structure of this invention. 2A is a side sectional view of the connection structure of FIG. 1, and FIG. 2B is a sectional view taken along line AA of FIG. It is the longitudinal cross-sectional view of the principal part which showed 1st Example of the connection structure of this invention. 4A is a cross-sectional view taken along the line BB of FIG. 3, and FIG. 4B is a modification of the retaining member shown in FIG. 3, and is a cross-sectional view similar to FIG. 5 (a), 5 (b), 5 (c), and 5 (d) show the retaining member according to the horizontal misalignment (construction error) in the connection structure of the first embodiment of the present invention shown in FIG. It is sectional drawing which shows an arrangement | positioning state. It is a longitudinal cross-sectional view of the principal part of the connection structure Mb used as the basis of 2nd Example of the connection structure of this invention. It is a longitudinal cross-sectional view of the principal part which shows the modification of the connection structure shown in FIG. It is the longitudinal cross-sectional view of the principal part which showed 2nd Example of the connection structure of this invention. 3 shows a modification in which the connection structure Ma of the first embodiment of the present invention shown in FIG. 3 is applied to the gantry 10 (vertical member 12e) of FIG. 11B, and FIG. FIG. 9B is a plan view of the same. It is the longitudinal cross-sectional view of the principal part which showed the modification which applied the connection structure Ma of 1st Example of this invention shown in FIG. 3 to the mount frame 10 (vertical material 12d, diagonal material 14) of FIG.11 (b). An application example of the connection structure of the present invention is shown, and FIG. 11 (a) applies the connection structure (M, Ma, Mb, Mc) of the present invention to the connection between a mount equipped with a solar panel as a workpiece and a steel pipe pile. FIG. 11 (b) is a cross-sectional side view illustrating an example of the connection structure (Ma) of the first embodiment of the present invention for connecting another type of gantry with a solar panel as a workpiece and a steel pipe pile. It is explanatory side sectional drawing which shows the applied example.

  As shown in FIGS. 11A and 11B, the connection structure of the present invention is embedded in a base 10 on which a solar panel S as a workpiece is mounted, and a required location on a site where the base 10 is installed. It is applied to connect the steel pipe pile 20 as a pile.

  As the gantry 10, for example, as shown in FIG. 11 (a), vertical members 12a, 12b, 12c having different heights are provided on the horizontal member 11, and a solar panel S is placed on the vertical members 12a, 12b, 12c. A mounting member 13 is provided to be mounted at an inclination angle, or, as shown in FIG. 11 (b), the horizontal member 11 is not used, and the solar panel S is formed on the vertical members 12d and 12e having different heights. Is provided with a mounting material 13a for mounting the material at a predetermined inclination angle, and an oblique material 14 provided between the vertical material 12d and the mounting material 13a. However, the present invention is not limited thereto. is not.

  As a pile, the winged steel pipe pile 20 shown to Fig.11 (a), (b) is used, for example. The winged steel pipe pile 20 is configured, for example, by providing a substantially one-turn spiral wing 22 on the lower end side outer peripheral surface of a pile main body 21 made of a steel pipe having a diameter of 70 mm to 150 mm. In addition, as a pile, it is not limited to the steel pipe pile 20 with a wing shown to Fig.11 (a), (b).

  A winged steel pipe pile (hereinafter referred to as a steel pipe pile) 20 is rotated by a rotary pushing device (auger not shown) connected to the upper end of the pile body 21 while the pile body 21 is raised on the ground. The pile main body 21 is pushed into the ground by rotating propulsion of the spiral blade 22 by causing the 22 to penetrate into the ground. The steel pipe pile 20 buried in the ground does not sink or rise by the spiral blade 22 or the like even if a load or a pulling force is applied. However, the pile main body 21 may be displaced in the horizontal direction (causing misalignment) due to the influence of the ground or the like in the process of being buried in the ground. In other words, the burial may be displaced in the horizontal direction from the original planned burial point (a horizontal construction error may occur).

  Generally, it is said that a construction error in the horizontal direction of a small diameter steel pipe pile having a diameter of about 70 mm to 150 mm occurs about 30 mm at the maximum, and a construction error of about 5 mm in the vertical direction occurs.

  The direction in which the misalignment occurs is not constant and varies, and the misalignment amount is also various. For this reason, it is difficult to directly connect the gantry 10 to the pile head of the steel pipe pile 20.

  The connecting structure of the present invention connects the gantry 10 to the pile head without any trouble even if various misalignments exist, and the structure does not increase in size as in the prior art. The horizontal cutting work of the pile head is not required.

  Examples of the connection structure of the present invention will be described in detail below.

FIG. 1 and FIGS. 2 (a) and 2 (b) show a connecting structure M that is the basis of the connecting structure of the present invention.

The connection structure M is disposed on the pile head of the steel pipe pile 20 that is attached to the gantry 10 (see FIG. 11 (a)) and that includes a connection shaft 30 including a headed bolt that hangs down in the vertical direction, and the connection shaft 30 that hangs down. Of the connecting space portion 40, the fixing member 50 made of mortar for fixing the connecting shaft 30 to the pile head of the steel pipe pile 20 after being filled in the connecting space portion 40 in a fluidized state and solidified, and the connecting space portion 40 And a movement preventing member 60 that is disposed on the inner wall surface near the upper end and prevents the solidified fixing member 50 from moving in the connection space 40 such as coming out of the connection space 40.

  The horizontal portion 11a of the substantially L-shaped horizontal member 11 constituting the gantry 10 is placed on the pile head of the steel pipe pile 20, and one end portion 30a of the connecting shaft 30 is inserted into the required portion. Bolt holes 11b are provided. One end 30a of the connecting shaft 30 passes through the bolt hole 11b, and a nut 31 is screwed into the one end 30a of the connecting shaft 30 that passes through and tightened.

  Although not shown, the horizontal portion 11a is provided with two holes at predetermined positions located on the connecting space portion 40. One hole is used to fill the connecting space 40 with mortar as the solidified member 50 in a fluid state. The other hole is used to release the air in the connection space 40 and smoothly perform the filling when the connection space 40 is filled with mortar as the solidified member 50 in a fluid state. This is because, as shown in FIGS. 1 and 2A, the horizontal portion 11 a closes all the upper end openings 40 a of the connection space portion 40. When the dimension of the horizontal part 11a in the front-rear direction (left-right direction in FIG. 2A) is shorter than the diameter dimension of the connecting space part 40 (upper end opening part 40a), the two holes are not necessary. This is because the connecting space 40 can be directly filled with the mortar as the solidified member 50 in a fluid state from the position of the upper end opening 40a not closed by the horizontal portion 11a. In addition, after filling the connecting space 40 with the mortar as the solidified member 50 in a fluidized state, the other end 30b that is the head of the connecting shaft 30 is maintained while the mortar is not solidified and maintains the fluidized state. The above two holes are not necessary even when a construction method of pushing into the mortar in the connection space 40 is employed.

  For example, the connecting shaft 30 has a bolt diameter of about 12 mm to 30 mm, the other end 30b that is the head thereof is on the lower side, and the one end 30a that is the lower end is on the upper side (upside down state). It is attached to the 10 horizontal parts 11a depending on the vertical direction.

  The connection space 40 is formed by fixing a disk-shaped bottom cover 41 made of a steel plate having an outer diameter that fits in the pile main body 21 at a predetermined depth in the pile head of the steel pipe pile 20 by welding or the like. The The other end 30b, which is the head of the connecting shaft 30, is inserted into the connecting space 40 from the upper end opening 40a.

  The connection space portion 40 has a construction error within a range that can be dealt with by its inner diameter dimension (pipe diameter of the steel pipe pile 20) among horizontal construction errors that occur when the steel pipe pile 20 is buried (shift within an allowable range in the horizontal direction). ) Can accept. Therefore, if the construction error is within this applicable range (deviation within an allowable range), no troublesome adjustment work according to the construction error is required.

  As the mortar used for the solidifying member 50, it is desirable to have a high strength (condition 1) because it receives a large supporting pressure locally from the connecting shaft 30, and has a high fluidity that does not require compaction (condition). 2) is desirable, and it is desirable that it is non-shrinkable (Condition 3) so that no gap is formed between the inner wall of the connecting space 40 after solidification (Condition 3). A small number (condition 4) is desirable. In the present embodiment, for example, a premix type commercially available mortar is used as one satisfying these four conditions. The solidified member 50 is not limited to mortar, and may be concrete or epoxy resin.

  For example, the movement preventing member 60 is formed by bending a round steel having a diameter of about 6 mm to 10 mm into a ring shape, and is fixed to the inner wall surface of the connection space 40 by welding or the like. The movement preventing member 60 may be formed by bending, for example, a square bar in a ring shape in addition to the round steel. Further, the movement preventing member 60 is formed of a plate piece or a block piece in addition to bending a round steel, a square bar or the like into a ring shape, and the inner wall surface of the connection space portion 40 so as not to obstruct the connection shaft 30. As long as the solidified solidified member 50 prevents the solidified member 50 from moving out of the connecting space 40, the shape or material thereof is not limited. It is necessary to devise so as not to narrow.

Next, the construction procedure of the connection structure M will be described.

  The bottom lid 41 and the movement preventing member 60 constituting the connection space 40 are attached to the pile head of the steel pipe pile 20 by welding or the like in advance in the factory, not in the construction site. And in the construction site which installs the solar panel S, the steel pipe pile 20 is each embed | buried in the predetermined embedment place decided beforehand. Further, in the gantry 10 on which the solar panel S is mounted, one end 30a of the connecting shaft 30 is inserted into each bolt hole 11b provided in the horizontal portion 11a of the horizontal member 11, and a nut 31 is screwed into the one end 30a. In addition, the connecting shaft 30 is attached in a state of hanging vertically.

  Next, the horizontal portion 11 a of the gantry 10 is lowered and placed on the pile head of the steel pipe pile 20 embedded, and the other end portion 30 b that is the head of each connecting shaft 30 is inserted into the connecting space portion 40. Some of the steel pipe piles 20 are embedded in the horizontal direction with a construction error, but if the construction error is within a range that can be accommodated in the connection space portion 40, the other end 30b of the connection shaft 30 is left in the connection space portion 40 as it is. Can accept.

  For example, when the inner diameter of the steel pipe pile 20 (the inner diameter of the connecting space portion 40) is 100 mm and the outer diameter of the other end portion (head) of the connecting shaft 30 is 30 mm, the allowable displacement range in the horizontal direction (compatible steel pipe) The horizontal construction error range of the pile 20 is (100-30) mm ÷ 2 = 35 mm, and can sufficiently cope with the misalignment that normally occurs (the construction error in the horizontal direction). If the allowable deviation range in the horizontal direction is exceeded, the steel pipe pile 20 may be pulled out and buried again.

  In the case shown in FIGS. 1 and 2 (b), the case where centering occurs in the left-right direction is shown, but the other end 30b of the connecting shaft 30 can be inserted into the connecting space 40 without any trouble. .

  Next, mortar as the solidified member 50 that has been stirred and mixed is injected and filled into the connecting space 40. And it waits until mortar solidifies. In addition, before lowering the horizontal part 11a of the gantry 10 on the pile head of the buried steel pipe pile 20, the mortar as the solidification member 50 is filled in the connection space part 40, and before the mortar solidifies (the flow state is changed). The horizontal portion 11a of the gantry 10 is lowered onto the pile head of the embedded steel pipe pile 20 and the other end portion 30b of the connecting shaft 30 is pushed into the mortar in the connecting space portion 40. Good.

  Thereafter, when the mortar is solidified and the other end portion 30 b of the connecting shaft 30 is fixed in the solidified member 50, the nut 31 screwed into the one end portion 30 a of the connecting shaft 30 is tightened.

  Thereby, the mount frame 10 is connected to and supported by the steel pipe pile 20. The steel pipe pile 20 once buried in the ground does not sink or rise even if a pushing load, a pulling force, or a horizontal force is applied by a spiral blade 22 (see FIGS. 11A and 11B) or the like. . Therefore, even if wind pressure or the like acts on the solar panel S, there is no possibility that the gantry 10 will be lifted from the ground, and there is no possibility that the solar panel S or the gantry 10 will sink due to its own weight, and the height from the ground is maintained.

According to the connection structure M described above , even if the steel pipe pile 20 is displaced in the horizontal direction from the planned embedding position, it is necessary to perform any adjustment work as long as it is within a construction error range that can be counteracted in the connection space 40. Absent. When the horizontal portion 11 a of the gantry 10 is placed on the pile head of the steel pipe pile 20, the other end portion 30 b of the connecting shaft 30 does not contact the inner wall surface or the bottom lid 41 in the connecting space portion 40, and the connecting space portion 40. Accepted as it is.

  Therefore, there is no need for complicated and troublesome misalignment adjustment work at the construction site, and the construction time can be greatly shortened and the construction cost can be reduced.

  Further, the solidifying member 50 is held in the connection space portion 40 by the movement preventing member 60 and does not come out of the connection space portion 40, and the connection shaft 30 is fixed in the connection space portion 40 by the solidification member 50 and connected. There is no escape from the space 40. For this reason, the gantry 10 on which the solar panel S is placed is supported in a stable state without fear of being lifted or detached from the pile head of the steel pipe pile 20 due to wind pressure or the like.

3 to FIG. 5 (a), (b) , (c), shows the first embodiment of the connection structure of (d) are present invention. The connection structure Ma of the first embodiment is configured based on the connection structure M shown in FIGS. 1 to 2A and 2B described above , and FIGS. 3 to 5A and FIG. ), (C), (d), the same parts as those shown in FIGS . 1 to 2 (a), (b) are denoted by the same reference numerals, and the description thereof is omitted.

In the connection structure Ma of the first embodiment, a retaining member 70 for preventing the connection shaft 30 from coming out of the solidifying member 50 (the connection space portion 40) is added to the connection structure M. The retaining member 70 is attached to the other end 30 b that is the head of the connecting shaft 30.

The other end 30b itself, which is the head of the connecting shaft 30, also has a larger outer diameter than other parts of the connecting shaft 30 and prevents the connecting shaft 30 from coming out of the solidifying member 50 (the connecting space portion 40). Although having the function, in the connection structure Ma of the first embodiment, the retaining member 70 is provided to further secure the retaining.

  For example, as shown in FIG. 4A, the retaining member 70 is formed of a rectangular plate-shaped steel plate with four corners cut, and an eccentric hole 71 through which the connecting shaft 30 penetrates at a position near one end in the long side direction. Is provided. The other end side in the long side direction of the retaining member 70 faces the center of the connection space 40 as shown in FIG.

The allowable horizontal displacement range (the horizontal construction error range of the steel pipe pile 20 that can be handled) described above is determined by the inner diameter of the connection space 40 and the outer diameter of the other end (head) 30b of the connection shaft 30. When the retaining member 70 is added, it is determined by the dimension of the retaining member 70 in the long side direction. If a hole for attaching the connecting shaft 30 is formed in the central portion of the retaining member 70, the horizontal allowable deviation range is between the inner diameter of the connecting space portion 40 and the other end (head) 30b of the connecting shaft 30. Since it is determined by the dimension in the long side direction of the retaining member 70 larger than the outer diameter, it is necessarily narrow. For this reason, the eccentric hole 71 is provided not at the center of the retaining member 70 but at a position near one end in the long side direction so that the allowable deviation range in the horizontal direction is as narrow as possible. In the case shown in FIG. 4A, the eccentric hole 71 is arranged in the retaining member 70 so that one end of the retaining member 70 does not protrude from the other end (head) 30 b of the connecting shaft 30. ing.

  FIG. 4B shows a modification of the retaining member 70, which is formed in an elliptical shape. The shape of the retaining member 70 is not limited to a square shape or an elliptical shape.

5A, 5 </ b> B, 5 </ b> C, and 5 </ b> C show that the arrangement state (orientation) of the retaining member 70 is changed according to the construction error in the horizontal direction of the steel pipe pile 20. That is, the arrangement state (orientation) of the retaining member 70 is changed to ensure a horizontal allowable deviation range (a horizontal construction error range of the steel pipe pile 20 that can be handled) as much as possible.

Fig.5 (a) has shown the case where there is no construction error of a horizontal direction. FIG. 4B shows the orientation of the retaining member 70 when a construction error in the left-right direction occurs. FIG. 2C shows the direction of the retaining member 70 when a construction error in the front-rear direction occurs. FIG. 4D shows the orientation of the retaining member 70 when an oblique construction error occurs. That is, except for the case shown in FIG. 5 (a) where there is no construction error in the horizontal direction of the steel pipe pile 20, as shown in FIGS. 5 (b), (c) and (d), the construction in the horizontal direction of the steel pipe pile 20 is performed. According to the error, the retaining member 70 is rotated with the connecting shaft 30 as a fulcrum, and the other end side in the long side direction of the retaining member 70 is directed to the central portion side of the connecting space portion 40 so that it is complicated and troublesome at the construction site. It corresponds to construction errors without adjusting the misalignment.

About the construction procedure of the connection structure Ma of the first embodiment, the retaining member 70 is rotated by using the eccentric hole 72 as a fulcrum so that the retaining member 70 does not hit the inner wall surface of the coupling space 40. Except for adjusting the direction, the connection structure M is the same as the case. After adjusting the direction of the retaining member 70, the connecting space 40 is filled with mortar. According to the connection structure Ma of the first embodiment, even if the steel pipe pile 20 is displaced in the horizontal direction from the planned embedding position, the direction of the retaining member 70 is changed if it falls within the horizontal allowable displacement range. It is possible to eliminate the need for complicated and troublesome adjustment of the misalignment. Further, the retaining member 70 can reliably prevent the connecting shaft 30 from coming out of the solidifying member 50 (the connecting space portion 40).

FIG. 6 shows a connecting structure Mb which is the basis of the second embodiment of the connecting structure of the present invention. In FIG. 6, the same parts as those shown in FIG.

In the connection structure Mb , when a vertical construction error that is unacceptable in the frame assembly occurs, this can be dealt with.

  Specifically, the steel pipe pile 20 and the gantry 10 are maintained so that the height position of the gantry 10 from the ground is kept constant even when the steel pipe pile 20 is buried lower than a preset height. A height adjusting nut 80 as a height adjusting member is screwed onto the connecting shaft 30 with the horizontal portion 11a. By adjusting the rotation of the height adjusting nut 80, the height of the gantry 10 can be easily adjusted and kept constant. The other end 30 b of the connecting shaft 30 is in contact with the bottom lid 41 of the connecting space 40.

  The total load of the solar panel S and the gantry 10 is transmitted from the height adjusting nut 80 to the steel pipe pile 20 via the connecting shaft 30 and the bottom lid 41 and from the connecting shaft 30 via the bottom lid 41.

FIG. 7 shows a modification of the connection structure Mb . 7, parts that are the same as the parts shown in FIG. 1 are given the same reference numerals, and explanation thereof is omitted.

  In this modification, a height adjusting ring 81 is disposed instead of the height adjusting nut 80 as a height adjusting member between the steel pipe pile 20 and the horizontal portion 11a of the gantry 10, and the steel pipe pile 20 has its pile head. Even if the height is buried lower than a preset height, the height position of the gantry 10 from the ground is kept constant. The height of the gantry 10 can be easily adjusted and kept constant by the height (thickness) of the height adjustment ring 81. When the height adjustment ring 81 is used, the mortar as the solidifying member 50 can be filled up to the lower surface of the horizontal portion 11 a of the gantry 10.

  The total load of the solar panel S and the gantry 10 is transmitted directly from the height adjustment ring 81 to the steel pipe pile 20.

  A height adjusting disk provided with a through hole of the connecting shaft 30 instead of the height adjusting ring 81 is disposed as a height adjusting member between the steel pipe pile 20 and the horizontal portion 11a of the gantry 10. May be.

As for the construction procedure of the connecting structure Mb , when the pile head height is low after embedding the steel pipe pile 20 and does not reach a preset height, a height adjusting member is provided between the steel pipe pile 20 and the horizontal portion 11a of the gantry 10. This is the same as the case of the connection structure M except that the height adjustment nut 80 or the height adjustment ring 81 is arranged to adjust the height of the gantry 10 from the ground.

8 shows the second embodiment of the connection structure of the present invention. The connection structure Mc of the second embodiment is configured based on the connection structure M shown in FIG. 1, the connection structure Ma shown in FIG. 3, and the connection structure Mb shown in FIG. The same parts as those shown in FIG. 3 and FIG.

In the connecting structure Mc of the second embodiment, in addition to providing the retaining member 70 at the other end 30b of the connecting shaft 30, the connecting shaft 30 between the steel pipe pile 20 and the horizontal portion 11a of the gantry 10 is provided. A height adjusting nut 80 is screwed and attached, and a leakage preventing member 90 is disposed in the gap between the lower surface of the horizontal portion 11a of the gantry 10 and the pile head of the steel pipe pile 20. The leakage preventing material 90 is formed from, for example, a thin steel plate or resin plate. As a result, it is possible to cope with horizontal construction errors that occur when embedding the steel pipe pile 20 as in the connection structure Ma of the first embodiment, and reliably prevent the connection shaft 30 from coming out of the solidified member 50 (connection space 40). In addition to being able to cope with vertical construction errors that are unacceptable for the assembly of the gantry, the mortar as the solidifying member 50 is filled into the connecting space portion 40 from the mortar filling hole 11c provided in the horizontal member 11a. When doing, it can prevent that mortar leaks outside from the clearance gap between the lower surface of the horizontal part 11, and the pile head of the steel pipe pile 20. FIG.

  Further, the tightening nut 100 is screwed onto the connecting shaft 30 and the retaining member 70 is pressed against the other end 30b as the head of the connecting shaft 30 so that no gap is generated between them. Thereby, the retaining member 70 can be fixed to the other end 30b of the connecting shaft 30, and the retaining member 70 can be prevented from swinging with the connecting shaft 30 (eccentric hole 71) as a fulcrum. This is performed before the mortar as the solidifying member 50 is filled into the connecting space portion 40 from the mortar filling hole 11c.

About the construction procedure of the connection structure Mc of this 2nd Example, after embedding the steel pipe pile 20, the horizontal part 11a of the mount frame 10 is dropped and mounted on the pile head of the buried steel pipe pile 20, and the mortar as the solidification member 50 is mounted. Before filling the connecting space 40 from the mortar filling hole 11c provided in the horizontal member 11a, the height adjustment as a height adjusting member is previously performed on the connecting shaft 30 between the steel pipe pile 20 and the horizontal part 11a of the gantry 10. The nut 80 is screwed and the height of the gantry 10 is adjusted by rotating the height adjusting nut 80, the other end 30 b of the connecting shaft 30 is brought into contact with the bottom cover 41 of the connecting space portion 40, and the gantry 10 A leakage preventing member 90 is disposed in the gap between the lower surface of the horizontal portion 11 and the pile head of the steel pipe pile 20, and the fastening nut 70 is screwed to the connecting shaft 30 to fix the retaining member 70 to the head of the connecting shaft 30. Press against the other end 30b Except placing is the same as that in the connection structure Ma of the first embodiment.

9 (a) and 9 (b) show a modification in which the connection structure Ma of the first embodiment is applied to the gantry 10 (vertical member 12e) shown in FIG. 11 (b). In FIG. 9B, the same parts as those shown in FIG. 1, FIG. 3, and FIG.

In the connection structure of this modification, the vertical member 12e constituting the gantry 10 and the pile head of the steel pipe pile 20 are connected using the connection structure Ma of the first embodiment. The vertical member 12e is made of L-shaped steel, and a square end plate 12f is provided at the lower end thereof. A bolt hole 12g for inserting the one end 30a of the connecting shaft 30 is provided at the center of the end plate 12f, and covers the upper end opening 40a of the connecting space 40 at a position slightly away from the bald hole 12g. A mortar filling hole 12h for filling the connecting space portion 40 with mortar as the solidifying member 50 is provided at a location.

  One end portion 30a of the connecting shaft 30 is inserted into the bolt hole 12g of the end plate 12f, and a nut 31 is screwed into the one end portion 30a, and the connecting shaft 30 is attached to the end plate 11f in a state of hanging vertically. The end plate 11f is placed on the pile head of the steel pipe pile 20, the other end 30b of the connecting shaft 30 is inserted into the connecting space 40, and mortar as the solidified member 50 is filled into the connecting space 40 from the mortar filling hole 12h. To do. When the mortar is solidified, the lower end of the vertical member 12e is connected to the pile head of the steel pipe pile 20 via the end plate 12f.

FIG. 10 shows a modification in which the connecting structure Ma of the first embodiment is applied to the gantry 10 (vertical member 12d and diagonal member 14) shown in FIG. 11B, and FIG. 10, FIG. 3, FIG. The same parts as those shown in 11 (b) are denoted by the same reference numerals, and the description thereof is omitted.

In the connection structure of this modification, the vertical members 12d and the diagonal members 14 constituting the gantry 10 and the pile heads of the steel pipe piles 20 are connected using the connection structure Ma of the first embodiment. The vertical members 12d and the diagonal members 14 are each made of L-shaped steel, and the lower ends thereof are fixed to the gusset members 15 by fastening members 16 made of bolts and nuts. A bolt hole 15 b for inserting the one end 30 a of the connecting shaft 30 is provided in the bottom plate portion 15 a of the gusset member 15.

  One end portion 30a of the connecting shaft 30 is inserted into the bolt hole 15b of the gusset member 15, and a nut 31 is screwed into the one end portion 30a, and the connecting shaft 30 is attached to the gusset member 15 in a state of hanging vertically. The gusset member 15 is placed on the pile head of the steel pipe pile 20, the other end 30b of the connecting shaft 30 is inserted into the connecting space 40, and the mortar as the solidifying member 50 is inserted into the connecting space 40 from a mortar filling hole (not shown). Fill. When the mortar is solidified, the lower ends of the vertical member 12d and the diagonal member 14 are connected to the pile head of the steel pipe pile 20 via the gusset member 15.

  The connection structure of the present invention is not limited to the connection between the gantry 10 of the solar panel S and the steel pipe pile 20 shown in the above embodiment. For example, an upper work such as a wind power generator or a power transmission tower and a pile This also applies to other connections.

  The structure of the workpiece and pile according to the present invention prevents the solar panel and its gantry from floating due to wind pressure, etc., and prevents the solar panel and its gantry from sinking due to its own weight. Applied to do.

S Solar panel (workpiece)
10 frame 20 steel pipe pile (pile)
DESCRIPTION OF SYMBOLS 30 Connection shaft 30a One end part 30b Other end part 40 Connection space part 50 Solidification member 60 Movement prevention member 70 Retaining prevention member

Claims (2)

A connection structure between a workpiece and a cylindrical pile that supports the workpiece,
A connecting shaft having one end attached to the work frame and hanging vertically;
A connection space portion with a bottom lid disposed on the head of the pile, which receives the other end portion of the connection shaft hanging down;
A fixing member that fills the connection space and fixes the other end of the connection shaft in the connection space ;
A movement preventing member that is disposed on an inner wall surface of the connection space portion and prevents the fixing member from moving in the connection space portion;
A retaining member disposed at the other end of the connecting shaft,
The connection space portion accepts a construction error in a range that can be dealt with by its inner diameter among the construction errors in the horizontal direction of the pile generated when the pile is buried ,
The retaining member has an eccentric hole for attaching to the connecting shaft at a position near one end in the long side direction, and rotates the connecting shaft as a fulcrum according to a construction error in the horizontal direction of the pile. The work-pile connection structure , wherein the other end side in the long side direction is fixed to the connection space portion by the fixing member together with the connection shaft with the other end side toward the center portion side of the connection space portion . In the connection structure of the workpiece and pile according to claim 1 ,
To adjust the construction error in the vertical direction of the pile that occurs when the pile is buried in the portion of the coupling shaft between the connection space and the mount or the space between the upper end of the pile and the mount. A structure for connecting a workpiece and a pile, characterized in that a height adjusting member is arranged.