Support for forming a concrete wall with remaining formwork and its construction method

Abstract

To provide a support structure that allows safe work during construction by using the same material and shape for the supports and the forms when constructing a concrete structure having remaining forms, thereby eliminating the need for single-tube pipes to support the forms and facilitating the ordering and procurement of components. [Solution] A support structure erected at the bottom of a hole dug in the ground or on a base plate laid on the ground, for forming a remaining concrete wall (12) by integrating a first formwork (61) and a second formwork (62), comprising a first support (91) in which a first pipe (65) is fitted to the cylindrical rib (61b) of the first formwork (61) and the cylindrical rib (63b) of the first support (63) is fitted to the end of the first pipe (65), and the first support (63) is made of the same material and has the same shape as the first formwork (61) and the second formwork (62).

Description

[Technical Field]

[0001] The present invention relates to concrete underground beams that support the foundations and underground portions of buildings, and concrete storage tanks that store rainwater, etc. To wall To form Shoring and construction Regarding the method. [Background technology]

[0002] Conventionally, a residual formwork has been disclosed that is provided to form a concrete structure consisting of a concrete side wall erected at 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 (see, for example, 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 arranged between the inner formwork and the outer formwork and holding the outer formwork or the outer formwork and the inner formwork together, and the outer formwork or the outer formwork and the inner formwork each comprises a plurality of base plates formed from plastic in the shape of square plates and arranged closely together 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 closely together vertically and horizontally, and a plurality of end reinforcing plates located on the outer periphery of the plurality of central reinforcing plates formed from plastic in the shape of rectangular plates and arranged closely together vertically and horizontally, connecting adjacent base plates and arranged in a square frame shape.

[0003] With the remaining formwork configured in this manner, 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 outer formwork at once, the outer formwork or outer formwork and inner formwork will not deform, and a concrete side wall of the desired shape can be formed. Furthermore, because the base plate, center reinforcing plate, and end reinforcing plate that make up the outer formwork or outer formwork and inner formwork are made of plastic, the base plate, center reinforcing plate, and end reinforcing plate that make up the outer formwork or outer formwork and inner formwork can be easily manufactured. Furthermore, if the base plate, center reinforcing plate, and end reinforcing plate that make up the outer formwork or outer formwork and inner formwork are made from recycled plastic, the base plate, center reinforcing plate, and end reinforcing plate that make up the outer formwork or outer formwork and inner formwork can be manufactured inexpensively. [Prior art documents] [Patent documents]

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

[0005] However, in the remaining formwork shown in Patent Document 1, the inner and outer forms are made of plastic and have a square shape. Condition However, this method has the drawback of requiring the preparation of the required quantities of the substrate, central reinforcing plate, and end reinforcing plate, which makes procuring the parts complicated and may result in construction being impossible or being delayed if the parts are not in stock. Furthermore, when constructing concrete walls, there was a problem in that the inner and outer formworks had to be supported with iron pipes called single pipes to prevent the concrete walls from tilting or collapsing, which was extremely time-consuming. In particular, when working in poor conditions such as forests, bringing in and setting up the single pipes was a tedious task. [Means for solving the problem]

[0006] The first aspect of the present invention is a device for installing a hoist on the bottom of a hole dug in the ground or on a base plate (13) laid on the ground. can A support for forming a concrete wall (12), The first formwork (61) and the second formwork (62) provided on the opposite side of the concrete wall (12) remain integral with the concrete wall (12),The first support (91) has a first pipe (65) fitted to a cylindrical rib (61b) of the first form (61), and a cylindrical rib (63b) of a first support (63) fitted to an end of the first pipe (65), and the first support (63) is made of the same material and has the same shape as the first form (61) and the second form (62). The first formwork (61) and the first support (63) are connected by a first support connecting member (75). It is characterized by:

[0007] The second aspect of the present invention is an invention based on the first aspect, ,before The second support (92) has a second pipe (66) fitted to a cylindrical rib (62b) of the second form (62), and a cylindrical rib (64b) of a second support (64) fitted to an end of the second pipe (66), and the second support (64) is made of the same material and has the same shape as the first form (61) and the second form (62). The second formwork (62) and the second support (64) are connected by a second support connecting member (79). It is characterized by:

[0008] The third aspect of the present invention is an invention based on the second aspect, characterized in that the first support (63) and the second support (64) are made of the same material and have the same shape as the partition plates (21) that constitute the horizontal connecting bodies (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13).

[0009] A fourth aspect of the present invention is an invention based on the third aspect, characterized in that the first pipe (65) and the second pipe (66) are made of the same material and have the same shape as spacers (28) arranged alternately with the horizontal connectors (22, 23, 24, 25, 26) in the vertical direction.

[0010] A fifth aspect of the present invention is an invention based on any one of the first to fourth aspects, wherein the first support (63 ) are mutual It is characterized by being connected in multiple adjacent positions vertically and horizontally.

[0011] The sixth aspect of the present invention is a device for installing a hoist on the bottom of a hole dug in the ground or on a base plate (13) laid on the ground. can A method of constructing supports for forming a concrete wall (12), comprising the steps of: The first formwork (61) and the second formwork (62) provided on the opposite side of the concrete wall (12) remain integral with the concrete wall (12), and the first formwork (61) and the first support (63) are connected by a first support connecting member (75), The method includes a first support construction process for constructing a first support (91) by fitting a first pipe (65) to the cylindrical rib (61b) of the first formwork (61) and fitting the cylindrical rib (63b) of a first support (63) to the end of the first pipe (65), and is characterized in that the first support (63) is made of the same material and has the same shape as 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, The second formwork (62) and the second support (64) are connected by a second support connecting member (79), The method is characterized by including a second support construction step of constructing a second support (92) by fitting a second pipe (66) to the cylindrical rib (62b) of the second formwork (62) and fitting the cylindrical rib (64b) of the second support (64) to the end of the second pipe (66).

[0013] An eighth aspect of the present invention is an invention based on the seventh aspect, characterized in that the first support (63) and the second support (64) are made of the same material and have the same shape as the partition plates (21) that constitute the horizontal connecting bodies (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13).

[0014] A ninth aspect of the present invention is an invention based on the eighth aspect, characterized in that the first pipe (65) and the second pipe (66) are made of the same material and have the same shape as spacers (28) arranged alternately with the horizontal connectors (22, 23, 24, 25, 26) in the vertical direction.

[0015] A tenth aspect of the present invention is the invention based on any one of the sixth to ninth aspects, wherein the first support (63 ) are mutual It is characterized by being connected in multiple adjacent positions vertically and horizontally. [Effects of the Invention]

[0016] In the shoring construction method according to the first aspect of the present invention or the sixth aspect of the present invention, a first shoring (91) is provided in which a first pipe (65) is fitted to a cylindrical rib (61b) of the first formwork (61) and a cylindrical rib (63b) of a first shoring (63) is fitted to an end of the first pipe (65), and the first shoring (63) is made of the same material and has the same shape as the first formwork (61) and the second formwork (62). The first formwork (61) and the first support (63) are connected by a first support connecting member (75).Therefore, the first pipes (65) and the first supports (63) function as single pipes supporting the first formwork (61) to prevent collapse during concrete pouring, eliminating the need for new parts or single pipes specifically for the first supports (63). This facilitates the ordering and procurement of components. Furthermore, the first formwork (61) can be stacked while the first supports (63) are being stacked, and planks can be placed horizontally on the multiple first pipes (65) to create scaffolding, allowing for safe construction of the support structure. Furthermore, by connecting pipes and supports with the same structure as the first pipes (65) and the first supports (63) in front of the first supports (63), the first support (91) can be constructed in a stepped manner, providing a method of constructing a support that is superior in terms of collapse prevention compared to the conventional method of supporting the first formwork (61) with single pipes.

[0017] In the method for constructing a shoring according to the second aspect of the present invention or the seventh aspect of the present invention, ,before The second support (92) has a second pipe (66) fitted to a cylindrical rib (62b) of the second form (62), and a cylindrical rib (64b) of a second support (64) fitted to an end of the second pipe (66), and the second support (64) is made of the same material and has the same shape as the first form (61) and the second form (62). The second formwork (62) and the second support (64) are connected by a second support connecting member (79). Therefore, there is no need to prepare new parts specifically for the second shoring (92). As a result, it is possible to easily order and obtain parts. In addition, since the first shoring (91) and the second shoring (92) are provided on both sides of the concrete wall (12), the strength of the shoring can be increased compared to when the shoring is provided on only one side, ensuring safety during work.

[0018] In the shoring construction method according to the third aspect of the present invention or the shoring construction method according to the eighth aspect of the present invention, the first shoring (63) and the second shoring (64) are made of the same material and have the same shape as the partition plates (21) that constitute the horizontal connecting bodies (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base (13), so that the first shoring (63) and the second shoring (64) that are removed after the ready-mixed concrete has hardened can be used in the storage complex construction process. As a result, the number of parts to be transported to the storage tank construction site can be reduced.

[0019] In the shoring construction method according to the fourth aspect of the present invention or the shoring construction method according to the ninth aspect of the present invention, the first pipe (65) and the second pipe (66) are made of the same material and have the same shape as the horizontal connectors (22, 23, 24, 25, 26) and the spacers (28) arranged alternately in the vertical direction, so that after the ready-mixed concrete hardens, the removed first pipe (65) and second pipe (66) can be used in the storage complex construction step. As a result, the number of parts to be transported to the storage tank construction site can be reduced.

[0020] In the method for constructing a shoring according to the fifth aspect of the present invention or the method for constructing a shoring according to the tenth aspect of the present invention, ) are mutualBecause they are connected side by side and in multiple directions, a strong support system can be constructed. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a cross-sectional view showing a main part of a concrete structure according to the present invention. [Figure 2] 1 is a cross-sectional view showing a main part of a storage tank constructed using the concrete structure of the present invention. [Figure 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. [Figure 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. 10 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 fixes vertical and horizontal reinforcing bars while connecting two adjacent partition plates to each other in the same horizontal plane. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. 10 is a plan view showing a state in which a plurality of partition plates and reinforcing bars are connected. [Figure 16] FIG. 10 is a cross-sectional view showing a state in which a plurality of partition plates and reinforcing bars are connected. [Figure 17] 1 is a cross-sectional view of a reservoir base using the present invention. [Figure 18] 1 is an assembly diagram of the formwork, partitions, pipes and supports used in the present invention. [Figure 19] 1 is a side view showing a process in the middle of constructing a concrete structure of the present invention. FIG. [Figure 20] FIG. 1 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 concrete structure of the present invention with the first support and the first pipe removed. DETAILED DESCRIPTION OF THE INVENTION

[0022] Next, an embodiment of the present invention will be described with reference to the drawings.

[0023] FIG. 1 is a cross-sectional view of a main portion 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 mortar or concrete base 13 laid at the bottom of a hole dug in the ground or 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 of the concrete wall 12 remain integrated with the concrete wall 12. The first formwork 61 and the second formwork 62 have cylindrical ribs 61b, 62b that can accommodate pipes 65, 66 shown in FIG. 19, and are made of the same material and shape as the partition plates 21 that constitute the horizontal connectors 22-26 of the storage complex 20 constructed on the base 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 formwork 61 and the second formwork 62 and that hold the first formwork 61 and the second formwork 62. The vertical reinforcing bars 81 and horizontal reinforcing bars 82 are connected to the first formwork 61 and the second formwork 62 by being inserted into the insertion holes 44, 45 of the reinforcing bar fixing jig 40 that are engaged with the engaged holes 61k, 62k of the first formwork 61 and the second formwork 62. In the concrete structure 11, the first formwork 61 and the second formwork 62 are connected by a separator 71.

[0024] Fig. 2 is a cross-sectional view of a main part of a storage tank 10 constructed using 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, a cross is placed on a concrete floor 14. Condition The storage tank has a concrete central wall 15, which is an underground beam constructed to intersect with the wall of the storage tank. 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. Furthermore, with regard to the formwork for 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.

[0025] 4, 5, 6, and 7 are respectively a perspective view, a plan view, a side view, and a cross-sectional view of a partition plate 21 used in the present invention. As shown in FIGS. 6 and 7, the first mold 61 and the second mold 62 are formed in plane symmetry by the same partition plate 21. In this embodiment, three concentric ribs are formed on the upper surface of the partition plate 21: a small-diameter first cylindrical rib 21a, a medium-diameter second cylindrical rib 21b, and a large-diameter third cylindrical rib 21c. On the lower surface of the partition plate 21, four concentric ribs are arranged, two vertically and two horizontally: a small-diameter fourth cylindrical rib 21d, a medium-diameter fifth cylindrical rib 21e, and a large-diameter sixth cylindrical rib 21f (FIGS. 5 and 7). The diameter of the first cylindrical rib 21a and the diameter of the fourth cylindrical rib 21d are formed to be the same, the diameter of the second cylindrical rib 21b and the diameter of the fifth cylindrical rib 21e are formed to be the same, and the diameter of the third cylindrical rib 21c and the diameter of the sixth cylindrical rib 21f are formed to be the same. 7 and spacer 28 of Insertable insertion holes 21g are formed (FIGS. 4 and 5). Furthermore, first engaged holes 21j are provided at each outer corner of two adjacent partition plates positioned outermost in the same horizontal plane, for engaging with a joining jig 30 shown in FIG. 8 for joining partition plates 21. Furthermore, second engaged holes 21k are provided adjacent to the joining jig 30, for engaging with a reinforcing bar fixing jig 40 for fixing vertical reinforcing bars 81 and horizontal reinforcing bars 82 while joining two adjacent partition plates 21 to each other in the same horizontal plane.

[0026] FIG. 8 is a perspective view of a joining jig 30 that joins the outer corners of two adjacent, outermost partition plates 21 in the same horizontal plane. FIG. 15 is a plan view showing a state in which a plurality of first and second formworks 61, 62, vertical reinforcing bars 81, and horizontal reinforcing bars 82 are joined, and FIG. 16 is a cross-sectional view thereof. A plurality of partition plates 21 closely arranged vertically and horizontally in the same plane are joined by the joining jig 30 (FIG. 15). That is, the corners of two adjacent, outermost partition plates 21 in the same plane are joined by the joining jig 30 to form the first and second formworks 61, 62. The joining jig 30 has a generally trapezoidal joining jig body 31, first engagement protrusions 32 protruding in two rows on the long side of the body on one surface of the joining jig body 31, and second engagement protrusions 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, 61j of the first formwork 61 and do not come out (FIG. 15). The joining jig 30 is molded from polyolefin resin (polypropylene, polyethylene, etc.), vinyl chloride resin, etc.

[0027] 9, 10, 11, 12, 13, and 14 are a perspective view, a front view, a plan view, a bottom view, a back view, and a right side view, respectively, of a reinforcing bar fixing jig 40 that fixes vertical reinforcing bars 81 and horizontal reinforcing bars 82 while connecting two adjacent divider plates 21 in the same horizontal plane. The reinforcing bar fixing jig 40 has two rows of reinforcing bar holding protrusions 42 provided on the long sides of a substantially trapezoidal jig body 41 and two rows of engaging protrusions 43 provided on the short sides of the jig body 41. The reinforcing bar holding protrusions 42 also 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 two insertion holes, one above the other, are provided to prevent the reinforcing bars from colliding with each other when the vertical reinforcing bars 81 and the horizontal reinforcing bars 82 are crossed. The reinforcing bar fixing jig 40 is made of polyolefin resin (polypropylene, polyethylene, etc.), vinyl chloride resin, or the like.

[0028] [Construction procedure of the present invention] The assembly procedure for the storage tank thus constructed will be described below.

[0029] [Storage tank foundation construction] Figure 17 shows a cross-sectional view of the foundation of a storage tank using this invention. First, a rectangular parallelepiped excavation is performed to a predetermined depth. The bottom of the excavation (base 51) is filled with crushed stone 52, compacted, and leveled. Next, a bottom plate 53 consisting of a partition plate 21 is laid in a row starting from the corner of the excavation. Next, a pipe is fitted to the bottom plate 53, and then gravel 54 is poured in. Then, a partition plate 21, which will become the top plate 55, is placed on top of it while fitting the pipe. Sand 56 is then spread evenly on top of that. Next, mortar 57 is poured over the entire sand 56 to a thickness of approximately 50 mm. After that, a protective sheet 58 approximately 4 mm thick is laid to cover the mortar 57, followed by a waterproof sheet 59 approximately 1.5 mm thick. This state is referred to as the base plate 13.

[0030] [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 construction of a concrete structure of the present invention. First, a plurality of partition plates 21, which are the first formwork 61, are arranged on the base plate 13 around the periphery of the hole that will become the storage tank. The convex portions 21h and concave portions 21i of adjacent partition plates 21 shown in FIG. 4 are engaged with each other. The first engaging protrusions 32 and second engaging protrusions 33 of the connecting jig 30 shown in FIG. 8 are then driven into the first engaging holes 21j of the partition plates 21 shown in FIG. 5, thereby engaging the first engaging protrusions 32 and second engaging protrusions 33 with the first engaging holes 21j of the partition plates 21 and preventing them from coming loose. This joins the corners of four adjacent partition plates 21 to each other. Next, the side of the reinforcing bar fixing jig 40 shown in FIG. 9, which has the reinforcing bar holding protrusions 42 and engaging protrusions 43, is driven into the second connecting holes 21k of the partition plates 21. Thereafter, vertical reinforcing bars 81 are inserted through the first insertion holes 44 of the reinforcing bar holding projections 42, and horizontal reinforcing bars 82 are inserted through the second insertion holes 45 of the reinforcing bar holding projections 42 of the vertically arranged reinforcing bar fixing jig 40, thereby fixing the vertical reinforcing bars 81 and horizontal reinforcing bars 82 to the partition plate 21 ( FIGS. 15 and 16 ). Alternatively, horizontal reinforcing bars 82 may be inserted through the first insertion holes 44 of the reinforcing bar holding projections 42, and vertical reinforcing bars 81 may be inserted through the second insertion holes 45. The connected partition plate 21 is then stood upright to form the first formwork 61. Next, a 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 using a nut member 74 and a plastic cone 72 connected to a ready-mixed concrete leak prevention plate 73. Thereafter, 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 formed at the top of the plastic cone 72. Next, the other end 71b of the separator 71 is screwed into the hole 76a formed at the top of the plastic cone 76, and a nut member 78 and a ready-mixed concrete leak prevention plate 77 are fixed in place. Furthermore, the nut member 78 is inserted into the insertion hole of the newly prepared partition plate 21 and fixed in place to form the second formwork 62.Next, the end 79a of the support connecting member 79 is screwed into the inside of the nut member 74, and the second cylindrical rib (not shown) of the newly prepared 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 process, the first concrete wall forming member 91 and the second concrete wall forming member 92 (support) are completed.

[0031] [Construction of the central (cross) wall forming member (support) of the storage tank] By carrying out the same work as in the construction process of the storage tank outer peripheral wall forming member, the assembly of the storage tank central (cross) wall 15 forming member (support) is completed.

[0032] [Ready-mixed concrete pouring] First, concrete wall 12 (side wall) is formed by pouring and hardening fresh concrete between first concrete wall forming member 91 and second concrete wall forming member 92 on the outer wall of the storage tank. 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, preventing deformation of the first formwork 61 and the second formwork 62, allowing a concrete wall of the desired shape to be formed. Furthermore, if a portion of the bottommost second formwork 62 is removed from the portion that will become the inner wall of the side wall, concrete can be poured so that it blends in with the concrete of the floor plate. Next, fresh concrete is poured between first concrete wall forming member 91 and second concrete wall forming member 92 in the center of storage tank 10 and hardened to form central wall 15, which has a cross shape in plan view. Furthermore, fresh concrete is poured and hardened on base 13 of storage tank 10 to form concrete floor 14.

[0033] [Storage complex assembly] FIG. 20 is a side view showing a concrete structure of the present invention having a storage complex 20. After the fresh concrete of the concrete floor 14 has hardened, the second supports 64 and second pipes 66 of the second concrete wall-forming members 92 of the side walls (concrete wall 12) are removed, and the second supports and second pipes of the second concrete wall-forming members of the central wall 15 are removed. Next, in addition to the removed second supports 64 and second pipes 66, multiple partition plates 21, main pipes 27, cylindrical spacers 28, connecting jigs 30, etc. are prepared, and the storage complex 20 is constructed on the concrete floor 14. In this embodiment, five horizontal connectors 22-26 are provided, consisting of a first horizontal connector 22 in the lowest tier, a second horizontal connector 23 in the second tier from the bottom, a third horizontal connector 24 in the third tier from the bottom, a fourth horizontal connector 25 in the fourth tier from the bottom, and a fifth horizontal connector 26 in the fifth tier from the bottom (top tier) ( FIG. 20 ).

[0034] [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, forming the top concrete 17. Here, the top formwork is usually made of wooden boards such as plywood.

[0035] [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 can be used in an unconstructed portion of the storage complex, or can be saved and used in subsequent construction projects.

[0036] [Top and bottom panel installation] A decorative panel (not shown) is attached on top of the top concrete 17.

[0037] According to an embodiment of the present invention, the removed second support 64 and the second pipe 66 can be used in the storage complex construction process, thereby reducing the number of parts to be transported to the storage tank construction site. [Explanation of symbols]

[0038] 11 Concrete structures 12 Concrete Wall 13 Bottom board 14 Concrete floor 20 Reservoir Complex 21 Partition 22,23,24,25,26 Horizontal connector 40 Rebar fixing jig 61 First Formwork 61b Second cylindrical rib 62 Second Formwork 65,66 Pipe 82 Horizontal reinforcing bars 71 Separator

Claims

1. A support 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, The first formwork (61) and the second formwork (62) provided on the opposite surface of the concrete wall (12) remain integral with the concrete wall (12), A first pipe (65) is fitted to the cylindrical rib (61b) of the first formwork (61), and a first support (91) is provided in which a cylindrical rib (63b) of a first support (63) is fitted to an end of the first pipe (65), The first support (63) is made of the same material and has the same shape as the first formwork (61) and the second formwork (62), and the first formwork (61) and the first support (63) are connected by a first support connecting member (75). A support structure characterized by:

2. A support structure as described in claim 1, comprising a second support (92) in which a second pipe (66) is fitted to the cylindrical rib (62b) of the second formwork (62) and a cylindrical rib (64b) of a second support (64) is fitted to the end of the second pipe (66), the second support (64) is made of the same material and shape as the first formwork (61) and the second formwork (62), and the second formwork (62) and the second support (64) are connected by a second support connecting member (79).

3. The support structure according to claim 2, wherein the first support (63) and the second support (64) are made of the same material and shape as the partition plates (21) that constitute the horizontal connecting bodies (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13).

4. The support according to claim 3, wherein the first pipe (65) and the second pipe (66) are made of the same material and shape as spacers (28) arranged alternately with the horizontal connectors (22, 23, 24, 25, 26) in the vertical direction.

5. The support structure according to any one of claims 1 to 4, wherein the first supports (63) are connected adjacent to each other vertically and horizontally.

6. A method for constructing a support structure 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, comprising: The first formwork (61) and the second formwork (62) provided on the opposite surface of the concrete wall (12) remain integral with the concrete wall (12), a first support construction step of connecting the first formwork (61) and the first support (63) with a first support connecting member (75), fitting a first pipe (65) to the cylindrical rib (61b) of the first formwork (61), and fitting an end of the first pipe (65) to the cylindrical rib (63b) of the first support (63), thereby constructing a first support (91); The first support (63) is made of the same material and has the same shape as the first formwork (61) and the second formwork (62). A support construction method characterized by:

7. A support construction method as described in claim 6, comprising a second support construction step of constructing a second support (92) by connecting the second formwork (62) and the second support (64) with a second support connecting member (79), fitting a second pipe (66) to the cylindrical rib (62b) of the second formwork (62), and fitting the cylindrical rib (64b) of the second support (64) to the end of the second pipe (66).

8. A support construction method as described in claim 7, wherein the first support (63) and the second support (64) are made of the same material and shape as the partition plates (21) that constitute the horizontal connecting bodies (22, 23, 24, 25, 26) of the storage complex (20) constructed on the base plate (13).

9. 9. The support construction method according to claim 8, wherein the first pipe (65) and the second pipe (66) are made of the same material and shape as spacers (28) arranged alternately with the horizontal connectors (22, 23, 24, 25, 26) in the vertical direction.

10. A support construction method according to any one of claims 6 to 9, wherein the first supports (63) are connected adjacent to each other vertically and horizontally.

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