JP2013194365A - Pile foundation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile foundation structure in which a positional relation between a pile and a construction can be adjusted in orthogonal two directions of a horizontal direction and the construction can be installed on the ground easily and accurately at a predetermined height level.SOLUTION: A pile foundation structure 10 for a base member 3 of a solar panel installation frame that is a construction to be installed on the ground comprises a pile 11 and a horizontal direction adjustment member 15. In the pile 11, a spiral blade 20 is provided on an outer circumferential surface of a portion which is intruded to the ground, the spiral blade 20 is threaded into the ground, and a head of the pile 11 is exposed on a surface of the ground. The horizontal adjustment member 15 is interposed between the head of the pile 11 and the base member 3 and is capable of adjusting a positional relation between the pile 11 and the base member 3 in horizontal orthogonal two directions. Between the pile 11 and the horizontal direction adjustment member 15, screw-type height adjustment means 14 is provided which includes a male screw rod 12 erected and fixed in the head of the pile 11, and a lifting member 13 provided with a lifting nut 25 into which the male screw rod 12 is threaded.

Description

  The present invention relates to a pile foundation structure for a structure installed on the ground, for example, a solar panel installation frame for solar power generation, a temporary scaffold for a construction site, and various structures such as a temporary house It can be used to fix to the ground.

  The following patent document 1 shows a pile foundation structure for a structure installed on the ground. In this pile foundation structure, spiral blades are provided on the outer peripheral surface of the part that enters the ground, and the spiral blades are screwed into the ground and the head is exposed to the ground surface, the head and the structure And a horizontal adjustment member that can adjust the positional relationship between the pile and the structure in two horizontal orthogonal directions. The horizontal adjustment member is a mounting plate on which a structure column is erected, and this mounting plate has a long slot formed in one of two horizontal orthogonal directions. The board | substrate is couple | bonded with the head of the pile in which this is mounted, and this board | substrate is provided with the some long hole extended radially from the center part of a pile.

  In this pile foundation structure, the pile is screwed into the ground and screwed into the ground to fix it to the ground, and the board provided at the head of the pile is exposed to the ground surface, and then on the board. Mount the mounting plate, and insert bolts into the long hole of this mounting plate and the long hole that is in a positional relationship orthogonal to the long hole of the mounting plate among the multiple long holes formed radially on the board And the board | substrate of the head of a pile and the attachment board in which the support | pillar of a structure is erected are performed by this bolt and the nut screwed together by this bolt.

  And in this pile foundation structure, since the long hole of the board in which the bolt is inserted and the long hole of the mounting plate are long long holes in two horizontal orthogonal directions, the adjusting action of these long holes, The positional relationship between the pile and the column of the structure is adjusted in two horizontal orthogonal directions (for example, the front-rear direction and the left-right direction).

JP 2007-205108 A

  However, in the above-mentioned pile foundation structure, the height level of the pile head substrate exposed to the ground surface is determined by the screwing depth of the spiral blades provided on the outer peripheral surface of the pile into the ground, so the structure The height level of the column is determined by the screwing depth of the spiral blade into the ground. Therefore, when rotating the pile with a special machine and screwing the spiral blade of this pile into the ground, when the pile is penetrated into the ground to a depth that can obtain the predetermined height level of the pillar of the structure, the board Of the long holes formed radially, any one of the long holes is not necessarily in a positional relationship orthogonal to the long hole of the mounting plate.

  For this reason, in order to make one of the long holes formed radially in the substrate in a positional relationship orthogonal to the long hole of the mounting plate, the screwing depth of the pile spiral blade into the ground According to this, since the penetration depth of the pile into the ground changes, it is difficult to accurately install the strut of the structure on the ground at a predetermined height level. When the structure is supported by multiple pile foundation structures, the depth level of the pile head exposed on the ground surface in each pile foundation structure changes depending on the penetration depth of the pile into the ground. As a result, the structure becomes uneven and the structure becomes uneven.

  An object of the present invention is to provide a pile foundation structure that can adjust the positional relationship between a pile and a structure in two orthogonal directions in the horizontal direction and can easily and accurately install the structure on the ground at a predetermined height level. There is a place to do.

  The pile foundation structure according to the present invention is a pile foundation structure for a structure installed on the ground, and a spiral blade is provided on an outer peripheral surface of a portion entering the ground, and the spiral blade is disposed in the ground. And a head whose head is exposed to the ground surface, and between the head and the structure, the positional relationship between the pile and the structure can be adjusted in two horizontal orthogonal directions. In a pile foundation structure including a horizontal adjustment member, a screw-type height in which a height position with respect to the pile is changed by rotating the pile around the pile between the pile and the horizontal adjustment member. An adjustment means is provided.

  In the pile foundation structure according to the present invention, there is provided a screw type height adjusting means for changing the height position with respect to the pile by rotating the pile around the pile and the horizontal adjustment member. When the screw-type height adjusting means is rotated around the pile, the height position of the screw-type height adjusting means with respect to the pile changes, and the horizontal adjustment member disposed on the screw-type height adjusting means The height position and the height position of the structure installed on the horizontal adjustment member are changed, so that the structure can be easily set to a predetermined height level.

  In addition, since the height adjustment means of this pile foundation structure is a screw type that changes the height position relative to the pile by rotating around the pile, the height position of the height adjustment means relative to the pile is It can be adjusted in a stepless manner, so that the height position of the horizontal adjustment member can be set accurately, and the construction can be set accurately at a predetermined height level.

  In addition, the pile foundation structure according to the present invention is provided with a horizontal adjustment member that allows the positional relationship between the pile and the structure to be adjusted in two horizontal orthogonal directions between the screw-type height adjusting means and the structure. Therefore, with this horizontal direction adjustment member, the positional relationship between the pile and the structure can be adjusted in two horizontal orthogonal directions.

  In the present invention, the screw-type height adjusting means may be of any structure constituted by any member as long as it is a screw-type that changes the height position relative to the pile by rotating around the pile. . The example of the screw-type height adjusting means includes a male threaded rod that is erected and fixed to the head of the pile, and a lifting nut that is screwed to the male threaded rod, and a horizontal adjustment member is placed on the upper surface. It is comprised including. In another example, the screw-type height adjusting means includes an elevating member on which the horizontal adjustment member is placed on the upper surface, a male screw rod coupled to the lower surface of the elevating member and extending downward, and the male screw rod screwed. In order to enter, it is comprised including the nut fixed to the head of a pile.

  In these screw-type height adjusting means, the height position of the elevating member relative to the pile is changed by rotating the elevating member around the pile, due to the screw elevating guide action of the male screw rod.

  In such a screw-type height adjusting means, the main body of the elevating member may have a cylindrical shape in which the head of the pile is accommodated.

  Thus, when the main body of the elevating member in the screw-type height adjusting means is a cylinder in which the head of the pile is housed, the head of the pile exposed on the ground surface is rained by the cylindrical main body of the elevating member. Therefore, the durability of the pile can be improved.

  Further, the head of the pile is formed by a cap member fixed to the top of the main body of the pile on which the spiral blade is provided on the outer peripheral surface, and the outer diameter of the cap member is set to the outer diameter of the main body of the pile. The inner diameter of the main body of the elevating member may be the same as or slightly larger than the outer diameter of the cap member.

  According to this, even when the outer peripheral surface of the pile and the inner peripheral surface of the main body of the elevating member may come into contact when the elevating member is moved up and down with respect to the pile by rotating the elevating member, this contact is The cap member and a portion of the inner peripheral surface of the main body of the lifting member corresponding to the location of the cap member, and the contact is long in the upper and lower areas of the inner peripheral surface of the main body of the lifting member or the main body of the pile Since it does not occur over a long region above and below the outer peripheral surface, the rotating operation of the elevating member performed to raise and lower the elevating member with respect to the pile can be easily performed by reducing the rotational frictional force with the pile. Become.

  In addition, by making the inner diameter of the main body of the elevating member the same as or slightly larger than the outer diameter of the cap member, the elevating member is tilted with respect to the pile by an external force acting on the structure. Even if it is displaced, since the inner peripheral surface of the main body of the elevating member immediately contacts the outer peripheral surface of the cap member, it is possible to prevent the elevating member from being displaced in this falling direction.

  Further, as described above, the screw-type height adjusting means includes a male threaded rod that is erected and fixed to the head of the pile, and a lifting nut that is screwed to the male threaded rod, and a horizontal adjustment member is placed on the upper surface. In the case where the lifting member is configured to be included, a lifting nut into which the male screw rod is screwed is coupled to the lifting member.

  According to this, when the elevating member is rotated with respect to the pile, the elevating member is guided up and down by the male screw rod.

  When the screw-type height adjusting means is configured as described above, a fixing nut is screwed onto the upper part of the male screw rod extending upward from the lifting nut, and the fixed nut is placed on the upper surface of the lifting member. The horizontal adjustment member can be fixed to the elevating member.

  Then, the upper part of the male screw rod to which the fixing nut is screwed does not protrude from the upper surface of the horizontal adjustment member, and the fixing nut is placed on the upper part of the male screw rod at a height position lower than the upper surface of the horizontal adjustment member. You may make it screw.

  According to this, since the upper part of the male threaded rod to which the fixing nut is screwed does not protrude from the upper surface of the horizontal adjustment member, the structure is not affected by the upper surface of the male threaded rod on the upper surface of the horizontal adjustment member. It is possible to stabilize and place and fix.

  In addition, the horizontal adjustment member is configured to include a high-level member on which the structure is placed and a low-level member that is disposed below the high-level member and through which the upper part of the male screw rod penetrates up and down. Between the member and the lower member, there may be provided a space part into which a tool for operating a fixing nut screwed onto the upper part of the male screw rod can be inserted.

  According to this, when performing the operation | work for fixing the horizontal direction adjustment member mounted in the upper surface of a raising / lowering member to a raising / lowering member with a fixing nut, the said space part provided between the high level member and the low level member Since the tool for operating the fixing nut can be inserted from this, this operation can be easily performed.

  In addition, the horizontal adjustment member is formed with a hole through which the upper part of the male screw rod penetrates vertically, and this hole is a long hole that is long in one of the two horizontal orthogonal directions described above. The member may also be formed with a hole into which a bolt for coupling the horizontal adjustment member and the structure is inserted, and this hole may be a long hole that is long in the other two directions in two horizontal orthogonal directions.

  According to this, since the long elongated hole is formed in the horizontal two directions orthogonal to each other in the horizontal adjustment member, the positional relationship between the pile and the structure can be adjusted in the horizontal two orthogonal directions. It becomes like this.

  The pile foundation structure according to the present invention described above can be used for installing an arbitrary structure on the ground, and this structure may be, for example, a solar panel installation stand for solar power generation, It may be a temporary scaffold constructed at a demolition site or the like, or may be a temporary house or the like.

  Further, the number of pile foundation structures according to the present invention used for installing the structure on the ground may be one or plural. That is, only one pile foundation structure according to the present invention may be used to install a structure on the ground, and a plurality of structures may be installed on the ground.

  According to the present invention, the positional relationship between the pile and the structure can be adjusted in two orthogonal directions in the horizontal direction, and the structure can be easily and accurately installed on the ground at a predetermined height level.

FIG. 1 is a side view showing a solar panel installation stand for photovoltaic power generation, which is a structure to which a pile foundation structure according to an embodiment of the present invention is applied. FIG. 2 is a front view showing a main part of the solar panel installation stand of FIG. FIG. 3 is a front view showing the entire pile foundation structure shown in FIGS. 1 and 2. FIG. 4 is an exploded view of the pile foundation structure shown in FIG. FIG. 5: shows the pile which is a structural member of a pile foundation structure, (A) is a top view of a pile, (B) is a front view of the principal part of a pile. FIG. 6: shows the raising / lowering member which is a structural member of the screw-type height adjustment means of a pile foundation structure, (A) is a top view of an raising / lowering member, (B) is the front view which fractured | ruptured a part of raising / lowering member It is. 7A and 7B show the horizontal adjustment member, in which FIG. 7A is a plan view of the horizontal adjustment member, and FIG. 7B is a front view of the horizontal adjustment member. FIG. 8 is a front sectional view showing a state in which the elevating member of the screw type height adjusting means is set on the head of the pile. FIG. 9 is a front view showing the horizontal adjustment member set on the elevating member. FIG. 10 is a plan view showing the horizontal adjustment member in FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. FIG. 1 shows a side view of a structure installed on the ground 5 by a pile foundation structure 10 according to an embodiment of the present invention. This structure is a solar panel installation stand 1 for photovoltaic power generation. It is. The base member 3 of the gantry 1 on which a large number of solar panels 2 are installed is a channel material that opens to the rear side (right side in FIG. 1), and is a base member that is provided as two girder members of the gantry 1. 3 is fixedly disposed on the ground 5 by the pile foundation structure 10 according to the present embodiment.

  FIG. 2 shows an enlarged view of a pile foundation structure 10 provided in plural for one base member 3, and FIG. 3 shows the entire pile foundation structure 10. The exploded view of the pile foundation structure 10 is shown. As can be seen from FIG. 4, the pile foundation structure 10 includes a pile 11, a male threaded rod 12 that is erected and fixed to the head of the pile 11, and a lift that is attached to the head of the pile 11 via the male threaded rod 12. A member 13 and a horizontal adjustment member 15 placed on the upper surface of the elevating member 13 are included. The base member 3 is placed and fixed on the upper surface of the horizontal adjustment member 15.

  In the present embodiment, the screw-type height adjusting means 14 is constituted by members including the male screw rod 12 and the elevating member 13 as will be apparent from the following description.

  A spiral blade 20 is provided on the outer peripheral surface of the main body 11A formed of a steel pipe of the pile 11. In the present embodiment, a plurality of spiral blades 20 (in the illustrated example) are spaced apart from the main body 11A. 3). The spiral blade may be formed continuously without a gap between the upper and lower sides, or a plurality of piece members having a circumferential length smaller than one round of the main body 11A are opened at intervals shorter than one round of the main body 11A. It may be formed by arranging them in a spiral shape. A triangular pyramid-shaped tip portion 11B is provided at the lower end of the main body 11A of the pile 10, and a cutting blade 21 is attached to the outer peripheral surface of the tip portion 11B. Moreover, the cap member 22 is attached to the upper end of the main body 11A of the pile 10 by welding.

  Therefore, the cap member 22 is formed at the head of the pile 11 by the cap member 22, and as shown in FIG. It has upper surface part 22A which covers the upper end opening part of 11A, and ring-shaped flange part 22B which covers the upper outer peripheral surface of main part 11A of pile 11. For this reason, the outer diameter D1 of the cap member 22 is larger than the outer diameter D2 of the main body 11A of the pile 11. A fixing nut 23 is joined to the upper surface portion 22A of the cap member 22 by welding, and a hole through which the internal space of the main body 11A of the pile 11 and the screw hole of the fixing nut 23 are communicated with the upper surface portion 22A. 22C is formed. A hole 11 </ b> D is formed in the main body 11 </ b> A of the pile 11 below the cap member 22.

  A lock nut 24 is screwed onto the male screw rod 12 shown in FIG.

  The specific structure of the elevating member 13 shown in FIG. 4 is shown in FIGS. The main body 13A of the elevating member 13 is formed of a cylindrical member. For this reason, the main body 13A is cylindrical, and the inner diameter D3 of the main body 13A is the same as the outer diameter D1 of the cap member 22, or this The dimension is slightly larger than the outer diameter D1 (for example, when D1 is 55.4 mm, D3 is 57.3 mm). Further, the upper end opening of the main body 13A of the elevating member 13 is closed by a lid 13B, and an elevating nut 25 is joined to the lower surface of the lid 13B formed of a flat plate member by welding, and the lid 13B is attached to the lid 13B. A hole 13C that coincides with the screw hole of the elevating nut 25 is formed. A hole 13D is formed in the main body 13A of the elevating member 13.

  The specific structure of the horizontal adjustment member 15 shown in FIG. 4 is shown in FIGS. The horizontal direction adjusting member 15 includes a high-level member 26 formed of a flat plate member and a low-level member 27 that is disposed below the high-level member 26 and is a bent product of sheet metal. A central portion of the low-level member 27 is a base portion 27A that is parallel to the high-level member 26. Upright portions 27B rise upward from both end portions of the base portion 27A. It is connected to the lower surface of the high level member 26 by welding. For this reason, a space portion S into which a tool such as a wrench can be inserted is formed between the high-level member 26 and the base portion 27 </ b> A of the low-level member 27.

  As shown in FIG. 7A, a long slot 28 is formed in one of two horizontal directions orthogonal to each other in the base portion 27A of the lower member 27. Reference numeral 28 denotes a hole through which the upper part of the male threaded rod 12 can be vertically penetrated. In addition, two elongated holes 29 are formed in the high-level member 26 at both locations where the low-level member 27 deviates outward from the location where the low-level member 27 is connected to the rising portion 27B. These long holes 29 are long holes in the other two of the two horizontal directions orthogonal to each other. For this reason, the long holes 28 and the long holes 29 are long holes in the directions orthogonal to each other. It has become. In addition, an opening 30 is formed in the high level member 26 at a location that coincides with the long hole 28 of the base portion 27 </ b> A of the low level member 27, and this opening 30 is elongated in the same direction as the long hole 28. It has a rectangular opening.

  Next, construction work of the pile foundation structure 10 performed for installing the solar panel installation stand 1 of FIG. 1 on the ground 5 will be described.

  First, an operation of making a pilot hole in the ground 5 where the pile 11 of each pile foundation structure 10 is erected is performed, and then an operation of screwing the tip 11B and the main body 11A of each pile 11 into these pilot holes. I do. This screwing operation is performed by setting a rotary dedicated machine on the head of the pile 11 via a socket (not shown) and rotating the pile 11 with this dedicated machine, whereby the spiral blade 20 of the pile 11 is grounded. 5, and the screwing operation exposes the head of the pile 11 to the ground surface 5 </ b> A of the ground 5, and the dimension from the upper surface of the fixing nut 23 provided on the head to the ground surface 5 </ b> A is a predetermined dimension. (For example, 100 mm).

  After the main body 11A of the pile 11 provided with the spiral blades 20 is screwed into the ground 5 in this way, the male screw rod 12 is screwed into the fixing nut 23 of the cap member member 22 from above, and the male screw rod 12 , The lock nut 24 screwed into the male screw rod 12 is rotated with a tool when the predetermined dimension (for example, 75 mm) is reached from the upper surface of the fixing nut 23 to the upper end of the male screw rod 12. Thus, the lock nut 24 is fastened to the fixing nut 23, and the male screw rod 12 is erected and fixed to the cap member member 22 on the head of the pile 11 with the lock nut 24. Thus, when the lock nut 24 is tightened to the fixed nut 23 by rotating the lock nut 24 with a tool, the pile 11 is inserted into the hole 11D provided in the main body 11A of the pile 11 by inserting a rotation stop bar. Stop spinning.

  Next, the elevating member 13 is put on the male screw rod 12 from above, and the upper portion 12A of the male screw rod 12 is screwed onto the elevating nut 25 provided on the lid 13B of the elevating member 13 as shown in FIG. The elevating member 13 is lowered by the screw elevating guide action of the male screw rod 12 by rotating the elevating member 13, and the elevating member 13 is raised and lowered by rotating the elevating member 13 forward and backward. The height position of the upper surface of the elevating member 13 on which the direction adjusting member 15 is placed is set to a predetermined height position from the ground surface 5A. When the height position of the upper surface of the elevating member 13 on which the horizontal direction adjustment member 15 is placed is set to a predetermined height position from the ground surface 5A, the cap member 22 is formed as can be seen from FIG. The head of the pile 11 is accommodated in the cylindrical main body 13 </ b> A of the elevating member 13.

  In this embodiment, the male screw rod 12, the lock nut 24 for standingly fixing the male screw rod 12 to the head of the pile 11, and the elevating member 13 having the elevating nut 25 attached to the lower surface of the lid 13B. Thus, by rotating around the pile 11, the screw-type height adjusting means 14 is configured that moves up and down with respect to the pile 11 and changes the height position relative to the pile 11.

  Through the above operation, the upper portion 12A of the male threaded rod 12 protrudes upward from the upper surface of the elevating member 13, and thereafter, as shown in FIG. 9, the horizontal adjustment member 15 is placed on the upper surface of the elevating member 13. The upper portion 12A of the male screw rod 12 is inserted into the elongated hole 28 formed in the lower member 27 of the horizontal adjustment member 15 from below, and the square washer 40 and the spring washer 41 are inserted and fixed to the upper portion 12A. The nut 42 is screwed, and the fixing nut 42 is rotated with a tool and tightened. As can be seen from FIG. 10, the size of the opening 30 formed in the high-level member 26 of the horizontal adjustment member 15 is such that the square washer 40, the spring washer 41 and the fixing nut 42 can be inserted from above. Therefore, the work of setting the square washer 40, the spring washer 41 and the fixing nut 42 on the upper part 12A of the male threaded rod 12 is performed by inserting the square washer 40, the spring washer 41 and the fixing nut 42 into the opening 30 from above. Can be done.

  When the fixing nut 42 is rotated and tightened with a tool, the rotation member 13 is prevented from rotating by inserting a rotation-preventing bar into the hole 13D provided in the lifting member 13, and the horizontal direction adjusting member 15 is fixed. Is prevented by an operator's hand or tool.

  Then, the position on the ground surface 5A where the pile 11 is screwed into the ground 5 is in the length direction of the long hole 28 (the east-west direction) with respect to the original position determined by the accurate placement position of the solar panel installation base 1 ), Before the operation of tightening the fixing nut 42 with a tool, the adjustment function of the long hole 28 of the horizontal adjustment member 15 into which the upper portion 12A of the male screw rod 12 is inserted allows the pile 11 and The arrangement position of the horizontal direction adjustment member 15 with respect to the elevating member 13 is corrected in the A direction of FIG.

  Next, the above-described base member 3 of the solar panel installation base 1 is placed on the upper surface of the high-level member 26 of the horizontal direction adjustment member 15. The base member 3 is formed of the channel material as described above, and the bolt 50 shown in FIG. 9 is connected to the long hole 29 of the high-order member 26 of the horizontal adjustment member 15 and the lower flange of the base member 3. It is inserted into a hole formed in advance in the portion 3A from below, a plain washer 51 and a spring washer 52 are inserted into the screw shaft of the bolt 50 protruding from the lower flange portion 3A, and a nut 53 is screwed together. Tighten with a tool.

  As a result, the base member 3 of the solar panel installation base 1 is coupled to the pile 11 via the screw-type height adjusting means 14 and the horizontal direction adjusting member 15.

  Then, the location on the ground surface 5A where the pile 11 is screwed into the ground 5 is in the length direction of the long hole 29 (north-south direction) with respect to the original location determined by the accurate arrangement position of the solar panel installation base 1 ), Before the operation of tightening the nut 53 with a tool, the adjustment function of the long hole 29 of the horizontal adjustment member 15 into which the screw shaft of the bolt 50 is inserted allows the pile 11 and the lifting member to be moved. The position of the base member 3 with respect to 13 is corrected in the direction B of FIG.

  According to the pile foundation structure 10 which concerns on this embodiment demonstrated above, the screw which the height position with respect to the pile 11 changes by rotating the pile 11 between the head of the pile 11 and the horizontal direction adjustment member 15 as a center. Since the height adjustment means 14 is provided, when the lifting member 13 of the screw height adjustment means 14 is rotated around the pile 11, the height position of the lifting member 13 with respect to the pile 11 changes. The height position of the horizontal direction adjustment member 15 arranged on the screw type height adjustment means 14 and the height position of the base member 3 of the solar panel installation base 1 installed on the horizontal direction adjustment member 15 are changed. Thereby, the solar panel installation stand 1 can be easily set to a predetermined height level.

  The height adjusting means 14 uses a male threaded rod 12 and is a screw type in which the height position of the elevating member 13 relative to the pile 11 is changed by rotating the elevating member 13 around the pile 11. Therefore, the height position of the elevating member 13 with respect to the pile 11 can be adjusted steplessly. For this reason, the height position of the horizontal direction adjusting member 15 can be set accurately, and the solar panel installation base 1 The base member 3 can be accurately set to a predetermined height level.

  For this reason, even if the solar panel installation stand 1 is supported by a plurality of pile foundation structures 10, these pile foundation structures 10 can support the solar panel installation stand 1 without unevenness.

  Moreover, in the pile foundation structure 10 which concerns on this invention, the positional relationship of the pile 11 and the base member 3 between the screw-type height adjustment means 14 and the base member 3 of the solar panel installation mount 1 is made into the long hole 28. And 29, a horizontal adjustment member 15 that can be adjusted in two horizontal orthogonal directions is interposed, so that the positions of the pile 11 and the base member 3 are determined by the long holes 28 and 29 of the horizontal adjustment member 15. The relationship can be adjusted in two horizontal orthogonal directions.

  Moreover, as shown in FIG. 8, the main body 13A of the elevating member 13 which is a constituent member of the screw type height adjusting means 14 has a cylindrical shape in which the head of the pile 11 is accommodated. Therefore, the head of the pile 11 exposed to the ground surface 5 </ b> A can be protected from wind and rain by the cylindrical main body 13 </ b> A of the elevating member 13, and thus the durability of the pile 11 can be improved.

  Moreover, in this embodiment, while the head of the pile 11 is formed with the cap member 22, the outer diameter D1 in the flange part 22B of this cap member 22 is a dimension larger than the outer diameter D2 of the main body 11A of the pile 11. The inner diameter D3 of the main body 13A of the elevating member 13 is the same as or slightly larger than the outer diameter D1 of the flange portion 22B of the cap member 22, and therefore the elevating member Even when the outer peripheral surface of the pile 11 and the inner peripheral surface of the elevating member 13 may come into contact with each other when the elevating member 13 is moved up and down with respect to the pile 11 by rotating 13, this contact is caused by the cap member 22. The flange portion 22B and a part of the inner peripheral surface of the elevating member 13 corresponding to the location of the flange portion 22B, and the contact is the inner peripheral surface of the elevating member 13 Since it does not occur over a vertically long region or a long region above and below the outer peripheral surface of the pile 11, the rotation operation of the lifting member 13 performed to lift the lifting member 13 with respect to the pile 11 is performed with the pile 11. This can be done easily by reducing the rotational friction force.

  Furthermore, since the inner diameter D3 of the main body 13A of the elevating member is the same as or slightly larger than the outer diameter D1 of the flange portion 22B of the cap member 22, it acts on the solar panel installation base 1. Even if the elevating member 13 is displaced in a direction to be tilted with respect to the pile 11 due to an external force or the like, the inner peripheral surface of the elevating member 13 immediately contacts the outer peripheral surface of the flange portion 22B of the cap member 22; The displacement of the member 13 can be prevented. That is, the upright state of the elevating member 13 with respect to the pile 11 can be ensured.

  Further, in this embodiment, the upper portion 12A of the male screw rod 12 protrudes upward from the hole 13C of the elevating nut 25 of the elevating member 13 and the lid 13B of the elevating member 13, and is fixed by the fixing nut 42 screwed into the upper portion 12A. The lower member 27 of the horizontal adjustment member 15 placed on the upper surface of the lid 13B of the elevating member 13 is fixed to the elevating member 13, and the upper portion 12A of the male screw rod 12 to which the fixing nut 42 is screwed is horizontally oriented. What is not penetrating the upper member 26 of the adjusting member 15 upward, and the upper portion 12A penetrates upward is a base portion 27A of the lower member 27 disposed below the high member 26. .

  For this reason, according to this embodiment, since the upper part 12A of the male threaded rod 12 does not protrude from the upper surface of the horizontal direction adjusting member 15, the upper surface of the horizontal direction adjusting member 15 is not affected by the upper part 12A of the male threaded rod 12. The base member 3 of the solar panel installation base 1 can be stably placed and fixed.

  The horizontal adjustment member 15 includes a high-level member 26 on which the base member 3 of the solar panel installation base 1 is placed, and a low-level member 27 disposed below the high-level member 26. And a base portion 27A of the lower member 27, a space portion S into which a tool for operating the fixing nut 42 screwed into the upper portion 12A of the male screw rod 12 can be inserted is provided. After the base member 3 of the solar panel installation base 1 is placed and fixed on the upper surface of the member 26 with bolts 50, nuts 53, etc., the place on the ground surface 5A where the pile 11 is screwed into the ground 5 is inserted into the solar panel. Even when it is found that the original position determined by the exact placement position of the gantry 1 is shifted in the length direction of the long hole 28, the fixing nut is inserted with the tool inserted from the space portion S. 2, the fixing nut 42 is loosened, and the arrangement position of the horizontal direction adjusting member 15 with respect to the pile 11 and the elevating member 13 can be corrected in the length direction of the long hole 28. The nut 42 can be tightened again with a tool. Therefore, even after the base member 3 is placed and fixed on the upper surface of the high-level member 26, the operation of the fixing nut 42 with the tool can be easily performed.

  INDUSTRIAL APPLICABILITY The present invention can be used to fix various structures such as a solar panel installation stand for photovoltaic power generation, a temporary scaffold for a construction site, and a temporary housing to the ground.

DESCRIPTION OF SYMBOLS 1 Solar panel installation stand which is a structure 3 Base member of solar panel installation stand 5 Ground 5A Ground surface 10 Pile foundation structure 11 Pile 11A Main body 12 Male screw rod 13 Lifting member 13A Cylindrical main body 14 Screw type height adjustment means 15 Horizontal direction Adjustment member 20 Spiral blade 22 Cap member 24 Lock nut 25 Lifting nut 26 High-level member 27 Low-level member 28, 29 Long hole 42 Fixing nut 50 Bolt S for connecting the horizontal direction adjustment member and the solar panel installation base S Space portion

Claims (9)

A pile foundation structure for a structure installed on the ground,
A spiral blade is provided on the outer peripheral surface of the portion that enters the ground, and the spiral blade is screwed into the ground and the head is exposed to the ground surface, and between the head and the structure. In a pile foundation structure that is interposed and includes a horizontal adjustment member that can adjust the positional relationship between the pile and the structure in two horizontal orthogonal directions,
A pile foundation structure characterized in that a screw-type height adjusting means is provided between the pile and the horizontal adjustment member so that the height position with respect to the pile is changed by rotating the pile around the pile.   The pile foundation structure according to claim 1, wherein the screw-type height adjusting means includes a lifting member that moves up and down with respect to the pile by rotating around the pile. Pile foundation structure.   The pile foundation structure according to claim 2, wherein the main body of the elevating member has a cylindrical shape in which a head portion of the pile is accommodated.   The pile foundation structure according to claim 3, wherein the head portion of the pile is formed by a cap member fixed to the top of the main body of the pile provided with the spiral blade on an outer peripheral surface, The outer diameter of the cap member is larger than the outer diameter of the main body of the pile, and the inner diameter of the main body of the elevating member is the same as or larger than the outer diameter of the cap member. Pile foundation structure characterized by slightly larger dimensions.   The pile foundation structure according to any one of claims 2 to 4, wherein the screw-type height adjusting means includes a male screw rod that is erected and fixed to the head portion of the pile. A pile foundation structure, wherein a lifting nut into which the male threaded rod is screwed is coupled.   The pile foundation structure according to claim 5, wherein a fixing nut is screwed onto an upper portion of the male screw rod extending upward from the lifting nut, and the horizontal nut placed on the upper surface of the lifting member by the fixing nut. A pile foundation structure, wherein a direction adjusting member is fixed to the elevating member.   The pile foundation structure according to claim 6, wherein the upper portion of the male screw rod into which the fixing nut is screwed does not protrude from the upper surface of the horizontal adjustment member, and is higher than the upper surface of the horizontal adjustment member. The pile foundation structure, wherein the horizontal adjustment member is fixed to the elevating member by the fixing nut screwed to the upper portion of the male screw rod at a lower height position.   The pile foundation structure according to claim 7, wherein the horizontal adjustment member is disposed on a high-level member on which the structure is placed, and below the high-level member, and the upper portion of the male screw rod penetrates vertically. A space portion configured to include a low-level member, and into which a tool for operating the fixing nut screwed into the upper portion of the male screw rod can be inserted between the high-level member and the low-level member. Pile foundation structure characterized by being provided.   The pile foundation structure according to any one of claims 6 to 8, wherein the horizontal adjustment member is formed with a hole through which the upper portion of the male screw rod passes vertically, and the hole Of the two orthogonal directions, it is a long hole that is long in one direction, and the horizontal adjustment member is also formed with a hole into which a bolt for connecting the horizontal adjustment member and the structure is inserted, This hole is a long hole which is long in the other direction out of the two horizontal orthogonal directions.

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