Concrete structure having permanent form and construction method of the same

Abstract

To provide a concrete structure having a permanent form which can reduce the amount of components carried to a storage tank construction site, and to provide a construction method of the same.SOLUTION: In a concrete structure (11), a first form (61) provided on the surface of a concrete wall (12) and a second form (62) provided on the opposite side surface via the concrete wall (12) are integrated with the concrete wall (12) and remain. In the concrete structure (11), the first form (61) and the second form (62) have a cylindrical rib (61b) capable of fitting a pipe, and their materials and shapes are the same as those of a partition plate which constitutes horizontal connection bodies (22, 23, 24, 25) of a storage composite body (20) constructed on a base plate (13).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a concrete structure having formwork for forming concrete underground beams that support the foundations and underground portions of buildings, and concrete walls of storage tanks that store rainwater, etc., and a construction method thereof. [Background technology]

[0002] Conventionally, there has been disclosed a residual formwork that is provided for forming a concrete structure consisting of a concrete side wall erected on the bottom of a hole dug in the ground or on a concrete base laid on the ground, and that has a residual formwork remaining on the surface of the side wall (for example, see Patent Document 1 (Claim 1, paragraph

[0012] , Figures 1 and 2)). This remaining formwork comprises an inner formwork that forms the inner surface of the side wall, an outer formwork that forms the outer surface of the side wall, and a plurality of vertical reinforcing bars that are arranged between the inner formwork and the outer formwork and hold the outer formwork or the outer formwork and the inner formwork, and the outer formwork or the outer formwork and the inner formwork have a plurality of base plates formed from plastic in the shape of square plates and arranged in close contact vertically and horizontally, a plurality of central reinforcing plates formed from plastic in the shape of square plates of approximately the same size as the base plates, connecting four adjacent base plates and arranged in close contact vertically and horizontally, and a plurality of end reinforcing plates located on the outer periphery of the multiple central reinforcing plates formed from plastic in the shape of rectangular plates and arranged in close contact vertically and horizontally, connecting adjacent base plates and arranged in a square frame shape.

[0003] With the remaining formwork thus configured, a self-supporting and strong outer formwork or outer formwork and inner formwork can be easily assembled. As a result, even if a large amount of fresh concrete is poured between the inner formwork and the outer formwork at once, the outer formwork or outer formwork and inner formwork do not deform, and a concrete side wall of a predetermined shape can be formed. In addition, since the base plate, the central reinforcing plate, and the end reinforcing plate that constitute the outer formwork or outer formwork and inner formwork are made of plastic, the base plate, the central reinforcing plate, and the end reinforcing plate that constitute the outer formwork or outer formwork and inner formwork can be easily manufactured. Furthermore, if the base plate, the central reinforcing plate, and the end reinforcing plate that constitute the outer formwork or outer formwork and inner formwork are formed using waste plastic, the base plate, the central reinforcing plate, and the end reinforcing plate that constitutes the outer formwork or outer formwork and inner formwork can be manufactured inexpensively. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 2020-60005 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the residual formwork shown in the above-mentioned conventional Patent Document 1, the base plate for the inner and outer formworks is formed in a square shape using plastic, and the central reinforcing plate and the end reinforcing plate must each be prepared in the required quantities. This means that arranging the parts is complicated, and there is a risk that construction using this method will not be possible or will be delayed if the parts are not in stock. [Means for solving the problem]

[0006] A first aspect of the present invention is a concrete structure (11) having a concrete wall (12) erected on the bottom of a hole dug in the ground or on a base plate (13) laid on the ground, in which a first formwork (61) provided on the surface of the concrete wall and a second formwork (62) provided on the opposite side of the concrete wall (12) remain integrated with the concrete wall (12), and the first formwork (61) and the second formwork (62) have cylindrical ribs (61b) capable of fitting pipes (65, 66) and are made of the same material and shape as partition plates (21) constituting the horizontal connectors (22, 23, 24, 25, 26) of a storage complex (20) constructed on the base plate (13).

[0007] A second aspect of the present invention is an invention based on the first aspect, characterized in that a plurality of vertical reinforcing bars (81) and horizontal reinforcing bars (82) are inserted into insertion holes (44, 45) provided in a reinforcing bar fixing jig (40) engaged with the engaged holes (61k, 62k) of the first formwork (61) and the second formwork (62).

[0008] A third aspect of the present invention is the invention based on the first aspect, characterized in that the first form (61) and the second form (62) are connected by a separator (71).

[0009] A fourth aspect of the present invention is a method for constructing a concrete structure (11) including a concrete wall-forming member constructing step of constructing a concrete wall-forming member for forming a concrete wall (12) erected on the bottom of a hole dug in the ground or on a base plate (13) laid on the ground, and a concrete wall forming step of pouring ready mixed concrete between a first formwork (61) and a second formwork (62) of the concrete wall-forming member and hardening the concrete to form the concrete wall (12), the first formwork (61) and the second formwork (62) remaining integral with the concrete wall (12), the concrete wall-forming member constructing step comprising: fitting a first pipe (65) to a cylindrical rib (61b) of the first formwork (61) and fitting a cylindrical rib (63b) of a first support (63) to an end of the first pipe (65), thereby constructing a first concrete wall-forming member (91). and a second concrete wall forming member constructing step of fitting a second pipe (66) to a cylindrical rib (62b) of the second form (62) on the opposite side of a portion where a concrete wall (12) is to be formed with respect to the first form (61) and fitting an end of the second pipe (66) to a cylindrical rib (64b) of a second support (64), thereby constructing a second concrete wall forming member (92). The method further comprises a process of removing the second support (64) and the second pipe (66) after the concrete has hardened, and the removed second support (64) and the second pipe (66) are used in a storage complex assembly process, and the first formwork (61) and the second formwork (62) have the same material and shape as a partition plate (21) constituting a horizontal connector (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13).

[0010] A fifth aspect of the present invention is an invention based on the fourth aspect, characterized in that it includes a step of removing the first support (63) and the first pipe (65) after the concrete wall forming step.

[0011] A sixth aspect of the present invention is an invention based on the fourth or fifth aspect, characterized in that the first concrete wall forming member construction process includes a reinforcing bar insertion process for inserting a plurality of reinforcing bars (81, 82) into insertion holes (44, 45) provided in a reinforcing bar fixing jig (40) engaged with engaged holes (61k, 62k) of the first formwork (61) and the second formwork (62).

[0012] A seventh aspect of the present invention is an invention based on the sixth aspect, characterized in that the concrete wall forming member construction process includes a step of connecting the first formwork (61) and the second formwork (62) with a separator (71). Effect of the Invention

[0013] In the concrete structure according to the first aspect of the present invention or the method for constructing a concrete structure according to the fourth aspect of the present invention, the first formwork (61) and the second formwork (62) have cylindrical ribs (61b) capable of fitting the pipes (65, 66) and are made of the same material and shape as the partition plate (21) constituting the horizontal connectors (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13), so there is no need to prepare new parts dedicated to the remaining formwork. As a result, it is possible to easily order and obtain parts. In addition, the concrete wall forming step includes a step of removing the second support (64) and the second pipe (66) after the ready-mixed concrete hardens, and the removed second support (64) and the second pipe (66) can be used in the storage complex construction step. As a result, it is possible to reduce the amount of parts to be transported to the storage tank construction site.

[0014] In the concrete structure of the second aspect of the present invention and the method of constructing a concrete structure of the sixth aspect of the present invention, a plurality of vertical reinforcing bars (81) and horizontal reinforcing bars (82) are inserted into the insertion holes (44, 45) provided in the reinforcing bar fixing jig (40) engaged with the engaged holes (61k, 62k) of the first formwork (61) and the second formwork (62), thereby making it possible to strengthen the concrete wall.

[0015] In the concrete structure according to the third aspect of the present invention and the method for constructing a concrete structure according to the seventh aspect of the present invention, the first formwork (61) and the second formwork (62) are connected by a separator (71), so that the first formwork (61) and the second formwork (62) can be securely connected to each other. [Brief description of the drawings]

[0016] [Figure 1] 1 is a cross-sectional view showing a main part of a concrete structure according to the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing a main portion of a storage tank constructed using the concrete structure of the present invention. [Diagram 3] FIG. 3 is a plan view of the reservoir of FIG. 2. [Figure 4] FIG. 2 is a perspective view of a partition plate used in the present invention. [Diagram 5] FIG. 2 is a plan view of a partition plate used in the present invention. [Figure 6] FIG. 2 is a side view of a partition plate used in the present invention. [Figure 7] FIG. 2 is a cross-sectional view of a partition plate used in the present invention. [Figure 8] FIG. 2 is a perspective view of a joining jig for joining two adjacent partition plates to each other in the same horizontal plane. [Figure 9] FIG. 1 is a perspective view of a reinforcing bar fixing jig that connects two adjacent partition plates to each other in the same horizontal plane while fixing vertical and horizontal reinforcing bars. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. 13 is a plan view showing a state in which multiple partition plates and reinforcing bars are connected. [Figure 16] FIG. 11 is a cross-sectional view showing a state in which a plurality of partition plates and reinforcing bars are connected. [Figure 17]FIG. 2 is a cross-sectional view of a reservoir base using the present invention. [Figure 18] FIG. 2 is an assembly diagram of the formwork, partitions, pipes and supports used in the present invention. [Figure 19] FIG. 2 is a side view showing a process in the middle of constructing the concrete structure of the present invention. [Figure 20] FIG. 2 is a side view of a concrete structure of the present invention having a reservoir complex. [Figure 21] FIG. 2 is a side view showing the state in which the first support and the first pipe have been removed from the concrete structure of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Next, an embodiment of the present invention will be described with reference to the drawings.

[0018] FIG. 1 is a cross-sectional view of a main part of a concrete structure 11 according to the present invention. As shown in FIG. 1, in this embodiment, the concrete structure 11 has a concrete wall 12 erected on a bottom of a hole dug in the ground or on a mortar or concrete base plate 13 laid on the ground. A first formwork 61 provided on the surface of the concrete wall 12 and a second formwork 62 provided on the opposite surface across the concrete wall 12 remain integral with the concrete wall 12. The first formwork 61 and the second formwork 62 have cylindrical ribs 61a-f capable of fitting pipes 65, 66 shown in FIG. 19, and are made of the same material and shape as the partition plates 21 constituting the horizontal connectors 22-26 of the storage complex 20 constructed on the base plate 13. The concrete structure 11 also includes a plurality of vertical reinforcing bars 81 and horizontal reinforcing bars 82 that are disposed between the first form 61 and the second form 62 and hold the first form 61 and the second form 62. The vertical reinforcing bars 81 and horizontal reinforcing bars 82 are inserted into the insertion holes 44, 45 of the reinforcing bar fixing jig 40 that engages with the engaged holes 61k, 62k of the first form 61 and the second form 62, thereby connecting the vertical reinforcing bars 81 and the horizontal reinforcing bars 82 to the first form 61 and the second form 62. In the concrete structure 11, the first form 61 and the second form 62 are connected by a separator 71.

[0019] FIG. 2 is a cross-sectional view of a main part of a storage tank 10 constructed by the concrete structure of the present invention, and FIG. 3 is a plan view of the storage tank 10 of FIG. 2. In the center of the storage tank 10 of this embodiment, there is a concrete central wall 15, which is an underground beam constructed to cross on a concrete floor 14. In this embodiment, the outer formwork on the outside of the side wall of the storage tank is called the first formwork 61, and the inner formwork on the inside of the side wall of the storage tank is called the second formwork 62. In addition, with regard to the formwork of the central wall 15, the formwork on the right side of the drawing is called the first formwork 61, and the formwork on the left side of the drawing is called the second formwork 62.

[0020] 4, 5, 6 and 7 are respectively a perspective view, a plan view, a side view and a cross-sectional view of the partition plate 21 used in the present invention. As shown in Fig. 6 and Fig. 7, the first mold 61 and the second mold 62 are formed in plane symmetry by the partition plate 21, which is the same part. In this embodiment, three cylindrical ribs, a small diameter first cylindrical rib 21a, a medium diameter second cylindrical rib 21b and a large diameter third cylindrical rib 21c, are formed concentrically on the upper surface of the partition plate 21, and two cylindrical ribs, a small diameter fourth cylindrical rib 21d, a medium diameter fifth cylindrical rib 21e and a large diameter sixth cylindrical rib 21f, are formed concentrically on the lower surface of the partition plate 21, two in each direction, for a total of four ribs (Figs. 5 and 7). The diameters of the first cylindrical rib 21a and the fourth cylindrical rib 21d are the same, the diameters of the second cylindrical rib 21b and the fifth cylindrical rib 21e are the same, and the diameters of the third cylindrical rib 21c and the sixth cylindrical rib 21f are the same. In addition, an insertion hole 21g through which the spindle pipes 27, 28 described below can be inserted is formed at the center of the partition plate 21 divided into four (FIGS. 4 and 5). In addition, a first engaged hole 21j for engaging a joining jig 30 for joining the partition plates 21 is provided at each outer corner of the two partition plates located on the outermost sides in the same horizontal plane and adjacent to each other. Furthermore, a second engaged hole 21k for engaging a reinforcing bar fixing jig 40 for fixing the vertical reinforcing bar 81 and the horizontal reinforcing bar 82 while joining the two partition plates 21 adjacent to each other in the same horizontal plane is provided adjacent to the joining jig 30.

[0021] FIG. 8 is a perspective view of a joining jig 30 for joining the outer corners of two adjacent partition plates 21 located at the outermost positions in the same horizontal plane. FIG. 15 is a plan view showing a state in which a plurality of first and second formworks 61 and 62, as well as vertical and horizontal reinforcing bars 81 and 82, are joined, and FIG. 16 is a cross-sectional view thereof. A plurality of partition plates 21 arranged in close contact vertically and horizontally in the same plane are joined by the joining jig 30 (FIGS. 16 and 17). That is, the corners of two adjacent partition plates 21 located at the outermost positions in the same plane are joined by the joining jig 30 to form the first and second formworks 61 and 62. The joining jig 30 has a joining jig body 31 formed in a substantially trapezoidal shape, first engagement projections 32 protruding in two rows on the long side of the body on one surface of the joining jig body 31, and second engagement projections 33 protruding in two rows on the short side of the body. By driving and inserting the first engaging protrusion 32 and the second engaging protrusion 33 into the first engaged hole 21j of the partition plate 21, the first engaging protrusion 32 and the second engaging protrusion 33 engage with the first engaged holes 61j, 62j of the first formwork 61 and do not come out (FIGS. 15 and 16). The joining jig 30 is molded from polyolefin resin (polypropylene, polyethylene, etc.), polyvinyl chloride resin, etc.

[0022] 9, 10, 11, 12, 13 and 14 are respectively a perspective view, a front view, a plan view, a bottom view, a rear view and a right side view of a reinforcing bar fixing jig 40 which fixes a vertical reinforcing bar 81 and a horizontal reinforcing bar 82 while connecting two adjacent partition plates 21 to each other in the same horizontal plane. The reinforcing bar fixing jig 40 has reinforcing bar holding projections 42 provided in two rows on the long side of a substantially trapezoidal jig body 41 and engaging projections 43 provided in two rows on the short side of the jig body 41. The reinforcing bar holding projections 42 have a first insertion hole 44 provided on the upper side in the longitudinal direction and a second insertion hole 45 provided on the lower side in the longitudinal direction. The reason why two insertion holes are provided at the top and bottom is to prevent the reinforcing bars from hitting each other when the vertical reinforcing bar 81 and the horizontal reinforcing bar 82 are crossed. Moreover, the reinforcing bar fixing jig 40 is made of polyolefin resin (polypropylene, polyethylene, etc.), polyvinyl chloride resin, or the like.

[0023] [Construction procedure of the present invention] The assembly procedure for the storage tank thus constructed will now be described.

[0024] [Storage tank foundation construction] FIG. 17 shows a cross-sectional view of the base of a storage tank using the present invention. First, the ground is excavated into a rectangular parallelepiped shape of a specified depth, and crushed stones 52 are laid, compacted, and leveled on the bottom surface (base 51) of the excavation. Next, a bottom plate 53 consisting of a partition plate 21 is laid side by side from the corner of the excavation. Next, a pipe is fitted into the bottom plate 53, and then gravel 54 is poured in, and the partition plate 21, which becomes the upper plate 55, is placed on top of it while fitting it with the pipe. Furthermore, sand 56 is spread evenly on top of that. After this, mortar 57 is poured over the entire surface of the sand 56 to a thickness of about 50 mm, and then a protective sheet 58 with a thickness of about 4 mm is laid to cover the mortar 57, and then a waterproof sheet 59 with a thickness of about 1.5 mm is laid. This state is called the base plate 13.

[0025] [Construction of storage tank outer wall forming members (supports)] FIG. 18 is an assembly diagram of the formwork, pipes, and supports used in the present invention. FIG. 19 is a side view showing a process in the middle of constructing the concrete structure of the present invention. First, a plurality of partition plates 21, which are the first formwork 61, are arranged on the bottom plate 13 of the outer periphery of the hole to be the storage tank, and the convex parts 21h and concave parts 21i of the partition plates 21 adjacent to each other are engaged with each other, and the first engaging protrusions 32 and the second engaging protrusions 33 of the joining jig 30 are driven and inserted into the first engaged holes 21j of the partition plates 21, so that the first engaging protrusions 32 and the second engaging protrusions 33 are engaged with the first engaged holes 21j of the partition plates 21 and do not come off. As a result, the respective corners of the four adjacent partition plates 21 are joined to each other. Next, the side of the reinforcing bar fixing jig 40 on which the reinforcing bar holding protrusions 42 and the engaging protrusions 43 are provided is driven and inserted into the second engaged holes 21k of the partition plates 21. Thereafter, the vertical reinforcing bar 81 is inserted through the first insertion hole 44 of the reinforcing bar holding projection 42, and the horizontal reinforcing bar 82 is inserted through the second insertion hole 45 of the reinforcing bar holding projection 42 of the vertically arranged reinforcing bar fixing jig 40, and the vertical reinforcing bar 81 and the horizontal reinforcing bar 82 are fixed to the partition plate 21 (FIGS. 15 and 16). It is also possible to insert the horizontal reinforcing bar 82 through the first insertion hole 44 of the reinforcing bar holding projection 42, and insert the vertical reinforcing bar 81 through the second insertion hole 45. The connected partition plate 21 is made upright to form the first formwork 61. Next, the first support connecting member 75 is inserted through the insertion hole (not shown) of the first formwork 61, and the support connecting member 75 is fixed from the opposite side of the first formwork 61 by the nut member 74 and the plastic cone 72 connected to the fresh concrete leakage prevention plate 73. After that, the end 65a of the first pipe 65 is fitted into the second cylindrical rib (not shown) of the first formwork 61. Furthermore, the second cylindrical rib 21b of the newly prepared partition plate 21 is fitted into the other end 65b of the first pipe 65 to form the first support 63. Next, the end 71a of the separator 71 is screwed into the hole 72a provided at the top of the plastic cone 72. Next, the other end 71b of the separator 71 is screwed into the hole 76a provided at the top of the plastic cone 76, and the nut member 78 and the ready-mixed concrete leakage prevention plate 77 are fixed. Furthermore, the nut member 78 is inserted into the insertion hole of the newly prepared partition plate 21 and fixed to form the second formwork 62.Next, the end 79a of the support connection member 79 is screwed into the inside of the nut member 74, and a newly prepared second cylindrical rib (not shown) of the partition plate 21 is fitted into the end 66b of the second pipe 66 to form the second support 64. Thereafter, by repeating the same operations, the first concrete wall forming member 91 and the second concrete wall forming member 92 (support) are completed.

[0026] [Construction of the central part of the storage tank (cross) wall forming member (support structure)] By carrying out the same operations as in the above-mentioned storage tank outer peripheral wall forming member construction process, the assembly of the storage tank central (cross) wall 15 forming member (support) is completed.

[0027] [Pouring fresh concrete] First, fresh concrete is poured between the first concrete wall forming member 91 and the second concrete wall forming member 92 of the outer wall portion of the storage tank and hardened to form the concrete wall 12 (side wall). At this time, even if a large amount of fresh concrete is poured at once, the first concrete wall forming member 91 and the second concrete wall forming member 92 hold the first formwork 61 and the second formwork 62, so that the first formwork 61 and the second formwork 62 do not deform, and a concrete wall of a predetermined shape can be formed. In addition, in the portion that will become the inner wall of the side wall, if a part of the second formwork 62 at the bottom is cut off, the concrete can be poured so as to be integrated with the concrete of the floor plate. Next, fresh concrete is poured between the first concrete wall forming member 91 and the second concrete wall forming member 92 in the center of the storage tank 10 and hardened to form the central wall 15 that is cross-shaped in plan view. Furthermore, fresh concrete is poured on the bottom plate 13 of the storage tank 10 and hardened to form the concrete floor 14.

[0028] [Storage complex assembly] FIG. 20 is a side view showing the concrete structure of the present invention having the storage complex 20. After the fresh concrete of the concrete floor 14 hardens, the second support 64 and the second pipe 66 of the second concrete wall forming member 92 of the concrete wall 12, which is the side wall, are removed, and the second support and the second pipe of the second concrete wall forming member of the central wall 15 are removed. Next, in addition to the removed second support 64 and second pipe 66, a plurality of partition plates 21, a main shaft pipe 27, a cylindrical spacer 28, a connecting jig 30, etc. are prepared, and the storage complex 20 is constructed on the concrete floor 14. In this embodiment, the horizontal connectors 22 to 26 are provided in five stages, and consist of the first horizontal connector 22 in the lowest stage, the second horizontal connector 23 in the second stage from the bottom, the third horizontal connector 24 in the third stage from the bottom, the fourth horizontal connector 25 in the fourth stage from the bottom, and the fifth horizontal connector 26 in the fifth stage from the bottom (top stage) (FIG. 20).

[0029] [Pouring ready mixed concrete at the top] The top formwork 16 is placed between the fifth horizontal connector 26 and the second formwork 62, and ready mixed concrete is poured between the first formwork 61 and allowed to harden to form the top concrete 17. Here, the top formwork is usually made of a wooden board such as plywood.

[0030] [Removal of the first support and first pipe] 21 is a side view showing the state in which the first support 63 and the first pipe 65 have been removed from the concrete structure 11 of the present invention. After the top concrete 17 has sufficiently hardened, the first support 63 and the first pipe 65 are removed. In the case of a large-scale storage tank, the removed first support 63 and first pipe 65 are used in an unconstructed portion of the storage complex, or are stored and used in subsequent constructions.

[0031] [Top and bottom panel installation] A decorative panel (not shown) is attached on top of the top concrete 17.

[0032] According to the embodiment of the present invention, the removed second support 64 and the removed second pipe 66 can be used in the storage complex construction process. As a result, the amount of parts to be transported to the storage tank construction site can be reduced. [Explanation of symbols]

[0033] 11 Concrete Structures 12 Concrete Wall 13 Bottom board 14 Concrete Floor 20. Storage Complex 21 Partition 22,23,24,25,26 Horizontal connector 40 Rebar Fixture 61 First Formwork 61b Second cylindrical rib 62 Second Formwork 65,66 Pipe 82 Horizontal Reinforcement 71 Separator

Claims

1. A concrete structure (11) having a concrete wall (12) erected on the bottom of a hole dug in the ground or on a base plate (13) laid on the ground, in which a first formwork (61) provided on the surface of the concrete wall and a second formwork (62) provided on the opposite surface of the concrete wall (12) remain integral with the concrete wall (12), The first formwork (61) and the second formwork (62) have cylindrical ribs (61b, 62b) capable of fitting pipes (65, 66), and are made of the same material and shape as the partition plate (21) constituting the horizontal connectors (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13). A concrete structure (11).

2. 2. A concrete structure as described in claim 1, wherein a plurality of vertical reinforcing bars (81) and horizontal reinforcing bars (82) are inserted into insertion holes (44, 45) provided in a reinforcing bar fixing jig (40) engaged with the engaged holes (61k, 62k) of the first formwork (61) and the second formwork (62).

3. 2. The concrete structure according to claim 1, wherein the first form (61) and the second form (62) are connected by a separator (71).

4. A method for constructing a concrete structure (11) including a concrete wall forming member constructing step of constructing a concrete wall forming member for forming a concrete wall (12) erected on the bottom of a hole dug in the ground or on a base plate (13) laid on the ground, and a concrete wall forming step of pouring ready mixed concrete between a first formwork (61) and a second formwork (62) of the concrete wall forming member and hardening the concrete to form the concrete wall (12), wherein the first formwork (61) and the second formwork (62) remain integral with the concrete wall (12), the concrete-wall-forming-member constructing step includes a first concrete-wall-forming-member constructing step of constructing a first concrete-wall-forming member (91) by fitting a first pipe (65) to a cylindrical rib (61b) of the first formwork (61) and fitting an end of the first pipe (65) to a cylindrical rib (63b) of a first support (63), and a second concrete-wall-forming-member constructing step of constructing a second concrete-wall-forming member (92) by fitting a second pipe (66) to a cylindrical rib (62b) of the second formwork (62) and fitting an end of the second pipe (66) to a cylindrical rib (64b) of a second support (64), on the opposite side of a portion where a concrete wall (12) is to be formed with respect to the first formwork (61); The concrete wall forming step includes a step of removing the second support (64) and the second pipe (66) after the fresh concrete has hardened, The removed second support (64) and the second pipe (66) are used in a storage complex construction process; The first formwork (61) and the second formwork (62) have the same material and shape as the partition plate (21) constituting the horizontal connectors (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13). A method for constructing a concrete structure comprising the steps of:

5. 5. The method for constructing a concrete structure according to claim 4, further comprising a step of removing the first support (63) and the first pipe (65) after the concrete wall forming step.

6. 5. A method for constructing a concrete structure as described in claim 4, wherein the first concrete wall forming member construction process includes a reinforcing bar insertion process for inserting a plurality of reinforcing bars (81, 82) into insertion holes (44, 45) provided in a reinforcing bar fixing jig (40) engaged with engaged holes (61k, 62k) of the first formwork (61) and the second formwork (62).

7. 6. The method for constructing a concrete structure according to claim 4 or 5, wherein the concrete wall forming member constructing step includes a step of connecting the first formwork (61) and the second formwork (62) with a separator (71).

Images