Column installation method and temporary jig

Abstract

To provide a column installation method and temporary jigs allowing installation work to be easily carried out for a simple structure.SOLUTION: Provided is a column installation method installing a foundation member integrating a column part supporting an upper structure and the ground in an installation groove including: an assembly process of assembling a temporary foundation member by attaching temporary jigs on the foundation member; a temporary installation process of temporarily installing the temporary foundation member by engaging the temporary jigs in the installation groove; a pile driving process of driving a pile in the ground by penetrating the pile into a pile supporting part included in the foundation member after the temporary driving process; a removing process of removing the temporary jigs from the foundation member after the pile driving process; a column connection process of connecting the foundation member and the column part after the removing process; and a back-filling process of back-filling the installation groove after the column connection process.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a method for installing columns and a temporary jig applied to a building or the like having a simple structure.

Background Art

[0002] As disclosed in Patent Document 1, there is a carport for automobiles. The carport is a garage with a simple structure including a roof structure part and a column part.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a simple structure such as a carport, it is desired that the installation work is also simple.

Means for Solving the Problems

[0005] The method for installing columns for solving the above problems is a method for installing a foundation member that integrates a column part supporting an upper structure and the ground in an installation groove, and includes an assembling step of attaching a temporary jig to the foundation member to assemble a temporary foundation member, a temporary installation step of engaging the temporary jig with the installation groove to temporarily install the temporary foundation member, a pile driving step of inserting a pile into a pile support part provided in the foundation member and driving it into the ground after the temporary installation step, a removing step of removing the temporary jig from the foundation member after the pile driving step, a column connecting step of connecting the foundation member and the column part, and a filling-back step of filling back the installation groove after the removing step.

[0006] Further, there is a temporary jig used in the method for installing a column as configured above, which is a temporary jig having an engaging portion supported by an installation groove. Such a temporary jig may be configured to include an installation surface that is a plane orthogonal to the vertical direction and on which a measuring instrument for measuring the attitude of the base member is attached when the temporary jig is attached to the base member.

[0007] According to the above configuration, when installing the base member in the installation groove, the temporary jig is attached to the base member and the temporary jig is temporarily installed in the installation groove, so that the installation work of the base member becomes easy.

[0008] In the above method for installing a column, an adjustment step of adjusting the attitude of the base member may be further provided between the temporary installation step and the pile driving step. According to the above configuration, the temporary jig can be used for inclination adjustment to horizontally install the base member before driving the pile. That is, by adjusting the inclination of the temporary jig, the inclination of the base member integrated with the temporary jig can be adjusted. Since the temporary jig is temporarily installed near the opening of the installation groove, the inclination adjustment work is also easy.

[0009] In the above method for installing a column, the temporary jig includes an installation surface that is a plane orthogonal to the vertical direction and on which a measuring instrument for measuring the attitude of the base member is attached when the temporary jig is attached to the base member. In the adjustment step, the attitude of the base member may be adjusted using the measuring instrument installed on the installation surface. According to the above configuration, the temporary jig can install measuring instruments such as a spirit level and a level on the installation surface to perform the adjustment step.

[0010] In the above method for installing a column, the base member includes a plurality of vertical members extending in the vertical direction and a horizontal member connecting the vertical members. In the assembling step, the temporary jig may be configured to be attached to the upper ends of the vertical members.

[0011] According to the above configuration, the base member is configured by connecting a plurality of vertical members with a horizontal member. Therefore, the width direction intersecting the parallel arrangement direction of the vertical members can be made narrow. As a result, the installation groove for installing the base member can also be made narrow, so that the excavation work of the installation groove can be simplified.

[0012] In the above pile installation method, the pile support portion supports the piles so that the piles are inclined with respect to the vertical direction which is the standing direction of the column portion and extend in different directions from each other, and in the pile driving step, the piles are inserted into the pile support portion and driven into the ground. It may be configured to be.

[0013] According to the above configuration, the piles are driven into the ground so as to extend in different directions from each other. Therefore, the base member is less likely to be horizontally and vertically displaced, so that the column portion can be stably supported.

[0014] In the above pile installation method, in the backfilling step, it may be configured to backfill the installation groove with backfill soil added with a ground improvement material. According to the above configuration, by mixing the ground improvement material into the backfill soil, the stability of the backfilled portion of the installation groove can be enhanced, and thus the stability of the column portion connected to the base member can be improved.

Advantages of the Invention

[0015] According to the present invention, in a simple structure, the installation work can also be easily performed.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

MODE FOR CARRYING OUT THE INVENTION

[0017] Hereinafter, a method for installing a pillar of a carport to which the present invention is applied will be described with reference to FIGS. 1 to 11. <Description of the carport> As shown in FIGS. 1 and 2, the carport 1 as a column support structure is a parking lot with a simple structure and is a parking lot equipped with charging facilities for the electric vehicle 1a. The carport 1 includes a column portion 2, a roof structure 3 as an upper structure installed on the upper portion of the column portion 2, and an embedded support structure 11 for integrating the column portion 2 with the ground.

[0018] In this embodiment, the roof structure 3 is supported by two support columns 2. On the upper surface of the roof structure 3, a solar power generation panel 4 is installed. The roof structure 3 includes a first roof portion 5 and a second roof portion 6. The first roof portion 5 and the second roof portion 6 form a V shape. That is, the first roof portion 5 includes a base end portion 5a and a tip end portion 5b opposite to the base end portion 5a. The tip end portion 5b is located above the base end portion 5a. The second roof portion 6 also includes a base end portion 6a and a tip end portion 6b opposite to the base end portion 6a. The tip end portion 6b is located above the base end portion 6a. The base end portion 5a of the first roof portion 5 and the base end portion 6a of the second roof portion 6 are connected to form a V-shaped valley portion. The support column 2 hangs down from the valley portion. Each roof portion 5, 6 is configured to be connected to the upper part of the support column 2 by a cross bar 7. Such a carport 1 has, although not shown, equipment components such as a transformer, a storage battery, a lighting fixture, a display panel, a charging device, etc. installed in the attic portion or the like.

[0019] Since the solar power generation panel 4 and the equipment components associated with the solar power generation panel 4 are installed on the roof structure 3 of the carport 1, the carport 1 becomes heavier than a roof structure on which the solar power generation panel 4 is not installed. Accordingly, the support column 2 also becomes heavy by adopting a high-strength material or structure. The buried support structure 11 in this embodiment can stably support such a heavy support column 2 and roof structure 3.

[0020] <Buried support structure> As shown in FIGS. 2 and 3, the lower part of each support column 2 is integrated with the ground by the buried support structure 11. The buried support structure 11 includes a base member 12 and a pile 13. The base member 12 is installed in an installation groove 14 excavated on the ground surface GL.

[0021] The base member 12 includes a main body portion 12a, a column support portion 22, and a pile support portion 24. The main body portion 12a is composed of a polygonal column member. The main body portion 12a is composed of, for example, a square steel pipe having a square column shape. The main body portion 12a includes a central vertical member 15, a first outer vertical member 16, and a second outer vertical member 17. These vertical members 15, 16, 17 are arranged in the order of the first outer vertical member 16, the central vertical member 15, and the second outer vertical member 17. Or, they are arranged in the order of the second outer vertical member 17, the central vertical member 15, and the first outer vertical member 16.

[0022] The main body portion 12a further includes a first horizontal member 18 and a second horizontal member 19. The first horizontal member 18 connects the lower ends of the first outer vertical member 16, the central vertical member 15, and the second outer vertical member 17. The second horizontal member 19 is spaced above the first horizontal member 18 and connects the first outer vertical member 16, the central vertical member 15, and the second outer vertical member 17. The upper end of the central vertical member 15 is a support projection 21 that supports the support column portion 2. The upper ends of each of the first outer vertical member 16 and the second outer vertical member 17 are support projections 21 that support the pile 13. As shown in FIG. 4, each support projection 21 is a square column-shaped projection and includes four side surfaces 21a, 21b, 21c, and 21d.

[0023] The support projection 21 on the central vertical member 15 is a column support portion 22 to which the lower end of the support column portion 2 is connected. The column support portion 22 is fixed by fitting the lower end of the support column portion 2 and fastening bolts. Also, the column support portion 22 is fixed to the lower end of the support column portion 2 via a bracket. The column support portion 22 is fixed by a combination of the lower end of the support column portion 2 and these fixing means. Note that the lower end of the support column portion 2 may be fixed by fitting into a hole in the column support portion 22 and tightening bolts.

[0024] A pair of brackets 23 are attached to the support protrusions 21 of the outer vertical members 16, 16. Each bracket 23 includes a main board 23a, a pair of side boards 23b provided on both sides of the main board 23a, and butt joint pieces 23c provided on the pair of side boards 23b. The main board 23a is a rectangular plate that covers the opposing side surfaces 21a, 21c. The side board 23b is a rectangular plate that covers half of the side surfaces 21b, 21d adjacent to the side surfaces 21a, 21c from the corner side.

[0025] <Pile support portion> A pile support portion 24 through which a pile 13 is inserted is arranged on the main board 23a. The pile support portion 24 has an annular shape through which the pile 13 can be inserted. The insertion hole of the pile support portion 24 is sized such that the pile 13 fits snugly without rattling. Also, when driving the pile 13, the insertion hole of the pile support portion 24 functions as a guide hole having a length that is difficult to displace in the driving direction. In the present embodiment, the insertion hole of the pile support portion 24 is a circular hole. The pile support portion 24 is fixed to the bracket 23 by welding or the like.

[0026] The pile support portion 24 is inclined in one direction with respect to the vertical direction in which the insertion direction of the pile 13 is also the standing direction of the support column portion 2. As an example, the pile support portion 24 is inclined in a range greater than 0° and less than 45° with respect to the vertical direction in which the insertion direction of the pile 13 is also the standing direction of the support column portion 2. Also, the insertion direction of the pile 13 of the pile support portion 24 is inclined in one direction with respect to the ground surface GL. As an example, the pile support portion 24 is inclined in a range greater than 0° and less than 45°.

[0027] A pile support portion 24 through which the pile 13 is inserted is also arranged on one of the side boards 23b. The pile support portion 24 arranged on one of the side boards 23b has the same configuration and the same inclination as the pile support portion 24 arranged on the main board 23a.

[0028] One of the pair of brackets 23 is arranged from the direction of the side surface 21a, and the other bracket 23 is arranged from the direction of the side surface 21c. Then, the butting pieces 23c of the pair of brackets 23 are butted at the positions of the side surfaces 21b and 21d. And the pair of brackets 23 are joined by bolt tightening. Also, each main board 23a is fixed to each of the side surfaces 21a and 21c by bolt tightening. Thus, one pile support portion 24 inclined in the same direction is arranged on each of the side surfaces 21a, 21b, 21c, and 21d.

[0029] Here, the pile 13 is a linear long member and is an elongated round pile. The pile 13 is a wooden pile, a steel pipe pile, a concrete pile, or the like. The pile 13 is an existing pile. The pile 13 has an outer shape that can be inserted into the insertion hole of the pile support portion 24 without rattling. Each pile support portion 24 is set at an angle that does not interfere with, for example, the driven pile 13 or other members.

[0030] At the tip of each support protrusion 21 of the vertical members 15, 16, and 17, a mounting portion 26 is further provided. The mounting portion 26 is a cylindrical portion continuous with the support protrusion 21. The position of the mounting portion 26 is above the position where the bracket 23 is mounted. The mounting portion 26 is a portion for mounting the temporary fixture 31. The temporary fixture 31 is mounted on the mounting portion 26 by bolt tightening or the like.

[0031] <Temporary Fixture> As shown in FIG. 6, the temporary jig 31 includes a temporary frame 32. The temporary frame 32 is an annular frame having a rectangular shape and forms a rectangular opening on the inside. The upper surface of the temporary frame 32 serves as an installation surface 33 for checking the horizontal level of the base member 12 with respect to the ground. The installation surface 33 is a plane orthogonal to the vertical direction, which is the standing direction of the vertical members 15, 16, and 17 after the temporary frame 32 is attached to the base member 12. Also, the installation surface 33 is a plane orthogonal to the direction in which the support column portion 2 stands after the posture of the base member 12 is adjusted horizontally. A spirit level or a level is installed on the upper surface of the temporary frame 32. The lower surface of the temporary frame 32 is provided with engaging pieces 34 (see FIG. 7). The engaging pieces 34 are provided, for example, on the long sides of the temporary frame 32 perpendicular to the lower surface of the temporary frame 32. The engaging pieces 34 and the lower surface of the temporary frame 32 form corner portions on the inner peripheral side and the outer peripheral side of the engaging pieces 34. The corner portions are engaging portions that are engaged with engaged portions such as stepped portions formed on the edge of the installation groove 14 or the like.

[0032] Inside the temporary frame 32, a connecting portion 35 is provided, which is connected to a mounting portion 26 protruding from the support protrusion 21. The connecting portion 35 is a cylindrical portion into which the mounting portion 26 is fitted. Each mounting portion 26 and the connecting portion 35 are fixed by fixing members 36 such as bolts and nuts in the fitted state. The temporary jig 31 is removed from the base member 12 after the pile 13 is driven through the pile support portion 24 of the base member 12.

[0033] Adjusting tools 38 are arranged on the outer surface of the long side of the temporary frame 32. The adjusting tools 38 include support pieces and bolt portions, and the bolt portions are tightened into bolt holes provided on the outer surface of the temporary frame 32. By rotating the adjusting tools 38 with respect to the outer surface of the temporary frame 32, the support pieces can be moved closer to or farther from the outer surface. After the posture of the temporary jig 31 is corrected, the adjusting tools 38 are rotated so that the support pieces abut against the wall surface of the installation groove. The adjusting tools 38 may be arranged on the outer surface of the long side of the temporary frame 32 or on the outer surface of the short side.

[0034] <Installation Method> First, as shown in FIG. 7, the temporary jig 31 is coupled to the attachment portion 26 of the base member 12 by the fixing member 36 to form the temporary base member 40 (assembly process). With the connection portion 35 fitted to the attachment portion 26, the fixing member 36 is tightened to form the temporary base member 40.

[0035] Also, in order to install the support column portion 2, an installation groove 14 is excavated in the ground at the location where the buried support structure 11 is to be arranged (excavation process). Here, the opening of the installation groove 14 is sized such that the temporary frame 32 of the temporary jig 31 in the temporary base member 40 can fit. Formwork or the like may be installed along the side walls of the installation groove 14. An engaging step portion is provided in the installation groove 14 at the position where the temporary jig 31 is to be temporarily installed.

[0036] Next, as shown in FIG. 8, the temporary base member 40 is temporarily installed in the installation groove 14 by engaging the temporary jig 31 at the opening end thereof (temporary installation process). Specifically, the temporary base member 40 is moved by a lifting device such as a crane, so that the portion of the base member 12 is inserted into the installation groove 14, and the engaging portion of the temporary jig 31 disposed above the base member 12 is engaged with an engaged portion such as an engaging step portion formed on the long side of the installation groove 14. Alternatively, the engaging portion of the temporary jig 31 is engaged with an engaged portion such as an engaging step portion of a temporary support base installed on the long side of the installation groove 14. The portion engaged with the engaging step portion is an engaging portion formed by the engaging piece 34 and the lower surface of the temporary frame 32 in the temporary jig 31. In this case, the installation groove 14 may be configured such that the width in the short side direction corresponds to the short side of the temporary frame 32, as long as the long side portion of the temporary frame 32 and the long side portion of the installation groove 14 can be engaged. The dimension in the long side direction of the installation groove 14 may be larger than the dimension in the long side direction of the temporary frame 23.

[0037] Note that the temporary jig 31 may be configured to engage the short side portion of the temporary frame 32 with the short side portion of the installation groove 14. In this case, the installation groove 14 may be configured such that the width in the long side direction corresponds to the long side of the temporary frame 32, as long as the short side portion of the temporary frame 32 and the short side portion of the installation groove 14 can be engaged. The dimension in the short side direction of the installation groove 14 may be larger than the dimension in the short side direction of the temporary frame 23.

[0038] Next, using the measuring instrument installed on the installation surface 33, adjust the posture of the base member 12 to be horizontal. The temporary jig 31 is provided with the installation surface 33 on the upper surface of the temporary frame 32 or the like. Measuring instruments such as a spirit level and a level are installed on the installation surface 33. Then, the inclination is adjusted by a height adjuster or the like so that the base member 12 becomes horizontal (adjustment step). After that, operate the adjuster 38 to press the support piece of the adjuster 38 against the wall surface of the installation groove 14. Thereby, the temporary jig 31 is supported in the adjusted posture.

[0039] Next, as shown in FIG. 9, a pile is inserted into the pile support portion 24 provided in the base member 12 and driven into the ground (pile driving step). Specifically, a pile 13 is inserted into each pile support portion 24, and continuously, the pile 13 is driven into the ground by a driving machine. Each pile 13 is driven until the pile head is near the end of the pile support portion 24. When driving the pile 13, the insertion hole of the pile support portion 24 functions as a guide hole in the driving direction. Thereby, the pile 13 is driven into the ground in a stable posture. The temporary base member 40 has its adjusted posture maintained by the adjuster 38. Therefore, even when vibration is applied during driving of the pile 13, the posture displacement due to vibration can be suppressed.

[0040] As shown in FIG. 10, when all the piles 13 are driven into the ground, in one support protrusion 21, the piles 13 are driven in different directions from each other and become inclined piles. Since the base member 12 is integral with the piles 13 which are square piles extending in all directions through the pile support portions 24, it is also integrated with the ground. Note that the pile 13 may be fixed to the pile support portion 24 by welding or the like after driving.

[0041] Next, as shown in FIG. 11, the temporary jig 31 is removed from the base member 12 (removal step). Specifically, remove the fixing member 36 that couples the base member 12 and the temporary jig 31, and use a lifting device to remove the temporary jig 31 from the base member 12.

[0042] Next, the base member 12 and the support column part 2 are connected (column connection process). For example, the column support part 22 is fixed by fitting the lower end of the support column part 2 and fastening bolts. Further, the column support part 22 is fixed to the lower end of the support column part 2 via a bracket. The column support part 22 is fixed by a combination of the lower end of the support column part 2 and these fixing means. Note that the lower end of the support column part 2 may be fitted into the hole of the column support part 22 and fixed by bolt tightening. Note that the column connection process may be performed after the backfilling process.

[0043] Next, the installation groove 14 is backfilled with backfill soil 37 (backfilling process). To the backfill soil, ground improvement agents such as cement-based improvement materials, lime-based improvement materials, composite improvement materials containing inorganic materials including cement and lime, and polymer-based improvement materials are added.

[0044] Thereafter, a roof structure 3 or the like is provided on the support column part 2. The process of providing the roof structure 3 or the like may be performed before the backfilling process or may be performed in parallel with the backfilling process. <Effects of the Embodiment> The effects of this embodiment will be described.

[0045] (1-1) When installing the base member 12 in the installation groove, a temporary fixture 31 is attached to the base member 12 and temporarily installed in the installation groove 14, so that the installation work of the base member 12 becomes easy.

[0046] (1-2) Since the temporary fixture 31 is removed after the pile driving process, it can be reused when installing other base members 12. (1-3) The temporary fixture 31 can be used for inclination adjustment to horizontally install the base member 12 before the pile driving process. That is, by adjusting the inclination of the temporary fixture 31, the inclination of the base member 12 integrated with the temporary fixture 31 can be adjusted. Since the temporary fixture 31 is temporarily installed near the opening of the installation groove 14, the inclination adjustment work also becomes easy.

[0047] (1-4) The temporary jig 31 can perform an adjustment process by installing measuring instruments such as a spirit level and a level on the installation surface 33. (1-5) The base member 12 is configured by connecting a plurality of vertical members 15, 16, 17 arranged in a row with horizontal members 18, 19. Therefore, the width direction intersecting the arrangement direction of the vertical members 15, 16, 17 can be configured to be narrow. As a result, the installation groove 14 for installing the base member 12 can also be configured to be narrow, so that the excavation work of the installation groove 14 can be simplified.

[0048] (1-5) The piles 13 are driven into the ground so as to extend in different directions from each other. Therefore, the base member 12 can stably support the support column 2 by being less likely to undergo horizontal displacement and vertical displacement.

[0049] (1-6) By mixing a ground improvement material into the backfill soil of the installation groove 14, the stability of the backfilled portion can be enhanced, and thus the stability of the support column 2 connected to the base member 12 can be improved. <Modification Examples of the Embodiment> The embodiment can be implemented with the following modifications. The embodiment and the following modification examples can be implemented in combination with each other as long as they do not technically conflict with each other.

[0050] · The temporary jig 31 is a jig for reuse. Therefore, measuring instruments such as a spirit level and a level may be built into the temporary frame 32. · The pile 13 driven using the pile support portion 24 of the base member 12 does not have to be inclined with respect to the vertical direction and driven in different directions from each other. That is, the pile 13 may be driven in the vertical direction. The number of piles 13 to be driven is not particularly limited either.

[0051] · The configuration of the base member 12 is not particularly limited. That is, the base member 12 is not limited to a configuration in which a plurality of vertical members 15, 16, 17 are connected by horizontal members 18, 19. For example, the base member 12 may be configured as a rectangular frame.

[0052] · The upper structure supported by the support part 2 is a roof structure 3, and a solar power generation panel 4 may not be installed. Further, the upper structure may be a signboard, an electric bulletin board, a traffic signal, a traffic sign, or the like.

Explanation of Signs

[0053] 1a… Electric vehicle 2… Support part 3… Roof structure 4… Solar power generation panel 5… First roof part 5a, 6a… Base end part 5b, 6b… Tip end part 6… Second roof part 7… Horizontal crossbar 11… Embedded support structure 12… Foundation member 12a… Main body part 13… Pile 14… Installation groove 15… Central vertical member 16, 17… Outer vertical members 18, 19… Horizontal members 21… Support protrusion 21a~21d… Side surfaces 22… Column support part 23… Bracket 23a… Main board 23b… Side board 23c… Butting piece 24… Pile support part 31… Temporary fixture 32… Temporary frame 33… Installation surface 34… Engaging piece 35… Connection part 36… Fixing member 37… Backfill soil 40… Temporary foundation member

Claims

1. A method for installing a column, which installs a foundation member that integrates a column portion supporting an upper structure and the ground in an installation groove, comprising: An assembly step of attaching a temporary fixture to the foundation member to assemble a temporary foundation member; A temporary installation step of engaging the temporary fixture with the installation groove to temporarily install the temporary foundation member; After the temporary installation step, a pile driving step of inserting a pile into a pile support portion provided in the foundation member and driving it into the ground; After the pile driving step, a removal step of removing the temporary fixture from the foundation member; A column connection step of connecting the foundation member and the column portion; After the removal step, a backfilling step of backfilling the installation groove; A column installation method comprising the above steps.

2. The column installation method according to claim 1, further comprising an adjustment step of adjusting the posture of the foundation member between the temporary installation step and the pile driving step. The column installation method according to claim 1.

3. When the temporary fixture is attached to the foundation member, it has an installation surface that is a plane orthogonal to the vertical direction and to which a measuring instrument for measuring the posture of the foundation member is attached. In the adjustment step, the posture of the foundation member is adjusted using the measuring instrument installed on the installation surface. The column installation method according to claim 2.

4. The foundation member includes a plurality of vertical members extending in the vertical direction and a horizontal member connecting the vertical members. In the assembly step, the temporary fixture is attached to the upper end of the vertical member. The column installation method according to claim 1 or 2.

5. The pile support portion supports the pile so that the pile is inclined with respect to the vertical direction, which is the erection direction of the column portion, and extends in different directions from each other. In the pile driving step, the pile is inserted into the pile support portion and driven into the ground. The column installation method according to claim 1.

6. In the backfilling step, the installation groove is backfilled with backfill soil added with a ground improvement material. The column installation method according to claim 1.

7. The temporary fixture used in the column installation method according to claim 1, comprising: A temporary fixture having an engaging portion supported by the installation groove.

8. When attached to the foundation member, it has an installation surface that is a plane orthogonal to the vertical direction and to which a measuring instrument for measuring the posture of the foundation member is attached. The temporary fixture according to claim 7.

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