BR112021006568A2 - permanent way to form concrete structures - Google Patents

Abstract

PERMANENT FORM FOR FORMING CONCRETE STRUCTURES. A permanent form (13) which serves to form concrete structures and which comprises side walls (11) comprises: an interior form (14) which forms the inner face of a side wall; an outer shape (16) which forms the outer face of the sidewall and a plurality of vertical gussets (17) which are disposed between the inner shape and which maintain the outer shape alone or together with the inner shape. The outer shape and the inner shape have: a plurality of base plates (18) which are formed from plastic into square plates and which are aligned so as to be in firm contact with each other in the vertical and horizontal directions; a plurality of central gusset plates (19) which are formed from plastic into square plates substantially equal in size to the base plates, then join four adjacent base plates together, and which are aligned so as to be in firm contact between itself in the vertical and horizontal directions; and a plurality of end gusset plates (21) which are formed from plastic into rectangular plates are disposed in a rectangular frame so as to join adjacent base plates while being located at the outer edges of the plurality of central gusset plates. aligned so that they are in firm contact with each other in the vertical and horizontal directions.

Description

"PERMANENT FORM FOR FORMING CONCRETE STRUCTURES" FIELD OF TECHNIQUE

[0001] The present invention relates to a form that serves to form an underground concrete beam that supports a portion of a lower structure or an underground portion of a building or a concrete sidewall of a storage tank that stores water from rain and the like. More particularly, it refers to a permanent form that remains on an underground beam or sidewall surface. It should be noted that the present international application claims priority based on Japanese Patent Application No. 190711 (Japanese Patent Application No. 2018-190711) merged on October 9, 2018 and all contents of Japanese Patent Application No. 2018 - 190711 are incorporated by reference into this international application.

TECHNICAL BACKGROUND

[0002] There has been conventionally disclosed a storage tank including a lower concrete slab placed in a lower portion of a hole dug in the ground, a storage complex provided in that lower slab and accommodated in the hole, a square cylindrical concrete sidewall provided for encircling the storage complex on the lower slab, and a sidewall forming member configured to form that sidewall in a square frame format (eg, see Patent Document 1, claim 1, claim 5, paragraphs [0019 ] and [0023], and Figure 1 and Figure 3 to Figure 5.] In this storage tank, the storage complex has a plurality of partition plates in square plate format each having at least one cylindrical rib protruding into a lower surface thereof and having at least one cylindrical rib protruding from an upper surface thereof, cylindrical spacers with ected to one or both of the upper surface and the lower surface of each of these divider plates while being fitted to the cylindrical ribs, and an outermost layer portion provided by alternating the arrangement of the divider plates and spacers in a vertical direction on the side outermost of the storage complex.

Additionally, the sidewall forming member has: a plurality of inner shaped platforms formed into a square cylindrical shape by arranging a plurality of first plate materials for the purpose of contacting a plurality of spacers constituting the layer portion outermost in portions which form an outer surface of the outermost layer portion according to each of the platforms between a plurality of partition wall platforms which constitute the outermost layer portion and are disposed vertically at intervals; a plurality of vertical gussets inserted in the plurality of platforms of the dividing boards, which constitute the outermost layer portion and are arranged vertically at intervals, in order to be placed on the outer side of the plurality of first board materials; and a single platform of an outer shape which is formed into a square cylindrical shape by retaining a plurality of second plate materials disposed on the outside of the plurality of divider plate platforms which constitute the outermost layer portion and are disposed vertically in intervals, at predetermined intervals from the vertical braces using a plurality of spacers. Additionally, the first board materials are plasticized cardboard materials, and the second board materials are steel screens.

[0003] In the storage tank thus configured, pouring and hardening the fresh concrete between the interior forms and the exterior forms enables the formation of the side wall on an upper surface of the lower slab, and the work of construction of the storage complex, the work of sidewall forming member construction and the sidewall forming work can be processed substantially simultaneously. Consequently, even an unskilled worker can form the concrete sidewall by a relatively simple method in a relatively short time. Furthermore, even if a relatively large horizontal partial pressure of an earth pressure acts on an outer peripheral surface of the storage tank, the structurally robust concrete sidewall receives the partial pressure and therefore can prevent the complex from occurring. storage is damaged. Additionally, since the concrete sidewall is supported by the storage complex in the storage tank, a sidewall thickness can be suppressed to the minimum necessary. Additionally, plastic cardboard material which is relatively light weight and has relatively high strength is used as each first plate material, steel wire which is relatively light weight and has relatively high strength is used as each second plate material and, therefore, transport and installation of the first board materials and the second board materials can be relatively and easily carried out.

QUOTE LIST

PATENTARY LITERATURE Patent Document 1: International Publication WO2017/073546

SUMMARY OF THE INVENTION TECHNIQUE PROBLEM

[0004] In the storage tank disclosed in Patent Document 1, since the steel wire is prone to deformation and has no self-supporting property, there is a disadvantage that many steps are required to retain this steel wire vertically raised by the separators. Additionally, in the storage tank revealed in Patent Document 1, when that storage tank is fully installed in the ground or when a lower portion of the storage tank is buried underground and an upper portion of it is exposed in the ground, there is also a problem that an appearance of the outer peripheral surface of the storage tank is impaired.

[0005] On the other hand, there is a method to stack bricks to form the outer form, but the stacked bricks have a self-supporting structure without being supported by the separators and therefore casting a large amount of the fresh concrete between the interior form. and the outer shape each time results in the collapse of the brick-built outer shape. Thus, there is a problem that the work of casting and hardening a small amount of the fresh concrete between the inner shape and the outer shape and the casting and hardening again of a small amount of it need to be repeated.

[0006] A first objective of the present invention is to provide a permanent shape to form concrete structures, which has self-supporting properties and readily enables the assembly of a robust outer shape or both an outer shape and an inner shape. A second objective of the present invention is to provide a permanent way to form concrete structures, which can improve an appearance of a storage tank in the case of installing the entire storage tank on the ground or installing the storage tank so that a portion The lower portion of the storage tank is buried in the ground and an upper portion of the storage tank projects into the ground. A third objective of the present invention is to provide a permanent shape for forming concrete structures, which makes it possible to easily and inexpensively manufacture the base plates that constitute an outer shape or both the outer shape and an inner shape, central reinforcement plates , end reinforcement plates and the like. A fourth objective of the present invention is to provide a permanent shape for forming concrete structures, which makes it possible to very easily retain an outer shape or both an outer shape and an inner shape and make it possible to reliably prevent a deformation of the outer shape and the inner shape. even if fresh concrete is cast between the inner and outer shape at the same time.

SOLUTION TO THE PROBLEM

[0007] As shown in Figure 1 to Figure 4, according to a first aspect of the present invention, a permanent form 13 is provided which is provided to form a concrete structure consisting of a concrete sidewall 11 erected on a lower slab of concrete 12 placed in a lower portion of a hole excavated in the ground or above the ground, and remains on a surface of the sidewall 11, including: an interior shape 14 which forms an inside face of the sidewall 11; an outer shape 16 which forms an outer face of the sidewall 11, and a plurality of vertical gussets 17 which are disposed between the inner shape 14 and the outer shape 16 and retain the outer shape or both the outer shape 16 and the inner shape 14 wherein the outer shape or both the outer shape 16 and the inner shape 14 have: a plurality of base plates 18 which are formed into a square plate shape using plastic and closely aligned in the vertical and horizontal directions; a plurality of central bracing plates 19 having a size in a square plate shape substantially the same as that of the base plates 18 with the use of plastic, coupling four adjacent base plates 18, and closely aligned in the vertical and horizontal directions; and a plurality of end gusset plates 21 which are formed into a rectangular plate shape with the use of plastic, placed on the outer edges of the plurality of central gusset plates 19 closely aligned in vertical and horizontal directions, and aligned in a square frame shape while attaching adjacent baseplates

18.

[0008] A second aspect of the present invention is characterized in that, in the invention based on the first aspect, as further shown in Figure 3(b) and Figure 9, the plastic decorative plates 34 are mounted on surfaces of the plurality of reinforcement plates centers 19 respectively, and a pattern 34b is raised or recessed on a surface of each of the decorative plates 34.

[0009] A third aspect of the present invention is characterized in that, in the invention based on the first or second aspect, as further shown in Figure 1, the sidewall 11 is an underground concrete beam that is buried in the ground and provided in the lower slab 12 to support a building, an outer face of this underground beam 11 is formed of the outer shape 16, and an inner face of the underground beam 11 is formed of the inner shape 14.

[0010] A fourth aspect of the present invention is characterized in that, in the invention based on the first or second aspect, as further shown in Figure 10 to Figure 13, the sidewall 51 is a square cylindrical concrete sidewall provided in the lower slab 52 to surround a rectangular parallelepiped-shaped storage complex 55 to form a storage tank 50, and an outer face of that side wall 51 is formed of the outer shape 16.

ADVANTAGEOUS EFFECTS OF THE INVENTION

[0011] In the permanent form according to the first aspect of the present invention, the outer shape or both the outer shape and the inner shape are formed by coupling the base plates, the central reinforcement plates and the end reinforcement plates in the vertical and horizontal directions, the plurality of vertical struts is arranged between the inner shape and the outer shape, the outer shape or both the outer shape and the inner shape are retained by these vertical struts and therefore the outer shape or both the outer shape as well as inner shape which have the properties of self-supporting and robustness can be mounted easily. Consequently, even if a large amount of fresh concrete is poured between the interior form and the exterior form at the same time, a concrete sidewall that has a predetermined shape can be formed without deforming the exterior form or both the exterior form and the form. interior. Additionally, since the base plates, the center reinforcement plates and the end reinforcement plates are made of plastic, the base plates, the center reinforcement plates and the end reinforcement plates make up the outer form or both both the outer shape and the inner shape can be manufactured easily. Additionally, the formation of the base plates, the center reinforcement plates and the end reinforcement plates using plastic waste makes it possible to cost-effectively manufacture the base plates, the center reinforcement plates and the end reinforcement plates. extremities that constitute the outer form or both the outer and the inner shape.

[0012] In the permanent form according to the second aspect of the present invention, the decorative plates made of plastic are mounted on the surfaces of the plurality of central reinforcement plates, respectively, the pattern is raised and indented on the surfaces of the decorative plates and, by Accordingly, the decorative boards each having the raised or recessed pattern on the surfaces thereof are exposed when the sidewall is formed in the ground. Consequently, the appearance of the sidewall surface can be improved.

[0013] In the permanence frame according to the third aspect of the present invention, since the side wall is the underground concrete beam that is buried in the ground and since the lower slab to support a construction and the external face of this underground beam is formed from the outer force while the inner face of the underground beam is formed from the inner shape, the outer shape and the inner shape are formed by coupling the base plates, the center brace plates, and the end brace plates in the vertical directions and horizontal, the plurality of vertical struts are disposed between the inner frame and the outer frame, and the outer shape and the inner shape are maintained by these vertical struts. Consequently, the outer shape and the inner shape which have the self-sustaining properties and the sturdiness can be easily assembled. Furthermore, even if the large amount of fresh concrete is poured between the inner frame and the outer frame at a time, the concrete sidewall having a predetermined shape can be formed without deforming the outer shape and the inner shape.

[0014] In permanent form according to the fourth aspect of the present invention, since the sidewall is the square cylindrical concrete sidewall that is provided to surround the rectangular parallelepiped-shaped storage complex on the lower slab to form the tank of storage and the outer face of that side wall is formed of the outer shape, the outer shape is formed by coupling the base plates, the central reinforcement plates, and the end reinforcement plate in the vertical and horizontal directions, the plurality of reinforcements verticals is disposed between the inner shape and the outer shape, and the outer shape is maintained by these vertical gussets. Consequently, the outer shape having the self-sustaining properties and the sturdiness can be easily mounted. It should be noted that the inner form is mounted on the outer peripheral surface of the storage complex mounted on the lower slab. Furthermore, as compared to a case where steel mesh or bricks are used as the outer form, the work of assembling the outside form can be greatly reduced and even if a large amount of fresh concrete is poured between the form. interior and exterior shape at a time, the concrete sidewall having a predetermined shape can be formed without deforming the outer shape. Furthermore, in a case where the entire storage tank is installed in the ground or the storage tank is installed so that the lower portion of it is buried in the ground and the upper portion of it is projected into the ground, the assembly of the plates Decorative designs on the surfaces of the center gussets of the outer form projected into the ground allow for the enhancement of the surface appearance of the storage tank.

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of a primary part showing a state in which an underground beam is formed using a permanent form to form concrete structures according to a first embodiment of the present invention;

[0016] Figure 2(a) is a front view showing a basic mounting procedure for baseplates of an outer shape or an inner shape of the permanent shape, and (b) is a front view showing a basic procedure for coupling adjacent baseplates by a central bracing plate;

[0017] Figure 3(a) is a front view showing a basic procedure for placing the end gusset plates on outer edges of the central gusset that couples adjacent baseplates and that couples adjacent baseplates by the end gussets, and (b) is a front view showing a basic procedure for mounting a decorative plate on a surface of the center gusset;

[0018] Figure 4 is a front view showing an intermediate state of assembly of the outer frame or the inner frame of an underground beam with the use of base plates, central reinforcement plates and end reinforcement plates;

[0019] Figure 5 is a cross-sectional cross-sectional view of a primary part showing a connecting surface of the outer shapes in a portion where the outer shapes become orthogonal to each other;

[0020] Figure 6(a) is a perspective view of the baseplate viewed from a front surface side, and (b) is a perspective view of the baseplate viewed from a rear surface side ;

[0021] Figure 7(a) is a perspective view of the central reinforcement plate as seen from the front surface side, and (b) is a perspective view of the central reinforcement plate as seen from the surface rear side. ;

[0022] Figure 8(a) is a perspective view of the end reinforcement plate as seen from the front surface side, and (b) is a perspective view of the end reinforcement plate as seen from the rear side of surface;

[0023] Figure 9(a) is a perspective view of the decorative plate seen from the front surface side, and (b) is a perspective view of the decorative plate seen from the rear surface side;

[0024] Figure 10 is an enlarged cross-sectional view of a portion A in Figure 13, showing a state where a side wall of a storage tank buried in the ground is formed using a permanent form to form structures of concrete according to a second embodiment of the present invention;

[0025] Figure 11 is a cross-sectional view taken along a line B-B in Figure 13;

[0026] Figure 12 is a front view showing an intermediate state of assembling an exterior form of the storage tank with the use of base plates, center reinforcement plates and end reinforcement plates;

[0027] Figure 13 is a longitudinal cross-sectional view of a storage facility that includes such a storage tank; and

[0028] Figure 14 is a front view of the outer form, showing a state in which the decorative plates are mounted on a side wall of an upper half of a storage tank that is installed so that a lower portion thereof is buried in the ground and an upper portion thereof is projected into the ground using a permanent form to form the concrete structures in accordance with a third embodiment of the present invention.

DESCRIPTION OF MODALITIES

[0029] Embodiments of the present invention will now be described with reference to the drawings. First Mode

[0030] As shown in Figure 1, in this modality, the concrete sidewall 11 which is a concrete structure is an underground concrete beam that supports a portion of a lower structure or an underground portion of a building, and this underground beam 11 is erected in a square frame shape on a 12 square-shaped concrete slab bottom slab placed in a lower portion of a hole dug in the ground. Underground beam 11 is formed of a permanent shape 13 that remains on a surface of this underground beam 11, that is, an outer face and an inner face of the underground beam 11. This permanent shape 13 includes an inner shape 14 which forms the inner face of the underground beam 11, an outer shape 16 which forms the outer face of the underground beam 11, and a plurality of vertical gussets 17 which are disposed between the inner shape 14 and the outer shape 16 and retain the outer shape 16 and the inner shape 14 .

[0031] The outer shape 16 and the inner shape 14 are formed symmetrically flat from the same components (Figure 1). Each of the outer shape 16 and the inner shape 14 has a plurality of base plates 18 which are formed into a square plate shape using plastic and closely aligned in the vertical and horizontal directions, a plurality of central gusset plates 19 which have a size in a square plate format substantially equal to that of the base plate 18 using plastic, couple the four adjacent base plates 18, and are closely aligned in the vertical and horizontal directions, and a plurality of gusset plates end plates 21 which are formed into a rectangular plate shape using plastic, placed on outer edges of the plurality of central gusset plates 19 closely aligned in the vertical and horizontal directions, couple the adjacent base plates 18, and aligned in a shape of square frame (Figure 1 to Figure 4). Base plates 18, center gussets 19, and end gussets 21 are made of a polyolefin resin (polypropylene, polyethylene, and the like), a vinyl chloride resin, and the like.

[0032] The base plate 18 is preferably formed in a square plate format that is 20 cm to 80 cm on one side and has a thickness of 4 cm to 8 cm. In addition, the baseplate 18 has a baseplate body 18a formed in a square plate shape, four baseplate coupling holes 18b each formed in a substantial center of a divided square plate when that body of baseplate 18a is divided into four square plates, four cylindrical ribs 18c which are projected on one side facing the central reinforcement plate 19 or the end reinforcement plate 21 on both sides of the baseplate body 18a and encircle the peripheries of the four baseplate coupling holes 18b respectively, and a frame-shaped protrusion 18d which is projected on an opposite side of a side facing the central reinforcement plate 19 or the end reinforcement plate 21 of both sides of the baseplate body 18a and formed into a square frame shape that extends along an outer edge of the baseplate body 18a (Figure 1 and Figure 6). Furthermore, on an outer peripheral surface of the baseplate 18, i.e. an outer face of the frame-shaped protuberance 18d, concave portions 18e and convex portions 18f are alternatively formed in a chessboard pattern (a chess pattern ) in two rows in the thickness direction of the baseplate 18 and four rows in the longitudinal direction of the baseplate according to each of the four sides (Figure 6). A height of the cylindrical ribs 18c is formed being substantially equal to a thickness of each of an outer corner portion connecting plate 22 (Figure 5)

and an inner corner portion connecting plate (not shown) which will be described later.

[0033] Furthermore, the plurality of baseplates 18 are closely aligned within the same vertical plane in the vertical and horizontal directions (Figure 2 to Figure 4). In this case, the concave portions 18e and the convex portions 18f formed on the outer face of the frame-shaped protrusion 18d of the baseplate 18 are fitted and loosely inserted into the convex portions 18f and the concave portions 18e formed on the outer face of the protrusion. in frame format 18d from an adjacent baseplate 18, respectively. Consequently, the baseplate 18 and the adjacent baseplate 18 can be prevented from moving within an interface thereof, viz., the baseplate 18 and the adjacent baseplate 18 can be prevented from moving relatively in the longitudinal direction and in the thickness direction of the same. Furthermore, the concave portions 18e and the convex portions 18f formed on the outer face of the frame-shaped protrusion 18d of the baseplate 18 are loosely fitted and inserted into the convex portions 18f and the concave portions 18e formed on the outside face of the protrusion of 18d frame format of an upper or lower baseplate 18, respectively. In that case, likewise, one can prevent the baseplate 18 and the upper or lower baseplate 18 from moving within an interface thereof.

[0034] Numerical reference 18g in Figure 1 and Figure 6(b) denotes a horizontal reinforcement rib that is provided to extend horizontally into the frame-shaped protrusion 18d, and reference numeral 18h in Figure 6(b) denotes a vertical bracing rib that is provided to extend vertically into the 18d frame-shaped bulge. In this embodiment, a plurality of locking holes 18i are formed in the horizontal bracing rib 18g and two vertical sides of the four sides of the frame-shaped protrusion 18d of the baseplate 18 at predetermined intervals. Additionally, one end of a further described outer spacer 24 is locked into an outer vertical gusset 17a of the vertical gussets 17 while the other end thereof is locked into the locking hole 18i of the base plate 18 forming the outer shape 16, and one end of a later-described inner spacer 26 is locked into an inner vertical gusset 17b of the vertical gusset 17 while the other end is locked into the locking hole 18i of the base plate 18 forming the inner shape 14. It should be noted that locking holes may be formed in the horizontal bracing rib and the vertical bracing rib, and the locking holes can be provided on all four sides of the protrusion in frame format. In that case, the top, bottom, left and right sides of the baseplate are not distinguished and the construction work for the baseplates can be facilitated.

[0035] The central reinforcement plate 19 is preferably formed in a square plate format that is 20 cm to 80 cm on one side and has a thickness of 3 cm to 6 cm (Figure 1 and Figure 7). In addition, the central gusset 19 has a central gusset body 19a formed in a square plate shape, four center coupling pins 19b projecting on one side facing the baseplate 18 on both sides of the body. of central reinforcement plate 19a, a square decorative plate which accommodates the concave portion 19c formed in the center of an opposite side of a side facing the base plate 18 from both sides of the central reinforcement plate body 19a. Furthermore, each of the four center coupling pins 19b is formed at a substantial center of a square split plate when the center brace plate body 19a is split into four square plates. Consequently, in a state where the four adjacent baseplates 18 are closely aligned in the vertical and horizontal directions (Figure 2), inserting the four center coupling pins of the center bracing plate 19 into the baseplate coupling holes 18b of the four base plates respectively so that the central bracing plate 19 is placed in the center of the four base plates 18 and overlaps a corner of each of the four base plates 18 allows coupling of the four base plates 18 by the plate. of central reinforcement 19 (Figure 2(b) and in Figure 3(a)). Therefore, the central coupling pins 19b are press fitted or driven into the baseplate coupling holes 18b and configured to be prevented from being easily removed by vibration or the like. It should be noted that reference numeral 19d in Figure 7(b) denotes lightweight concave portions formed on a side facing baseplate 18 on either side of the center gusset body 19a, and reference numeral 19e denotes the gusset ribs designed in the lightweight concave portions 19d in vertical and horizontal directions. In addition, reference numeral 19f in Figure 2(b), Figure 3, Figure 4, and Figure 7 denote four hollow holes for mounting a decorative plate 34. In addition, the concave portions and the convex portions have a board pattern. chessboards (a chess pattern) formed on the outer peripheral surface of the base plate 18, i.e. the outer peripheral surface of the frame-shaped protuberance 18d are not formed on the outer peripheral surface of the central reinforcing plate 19.

[0036] On the other hand, the end reinforcement plate 21 is formed in a rectangular plate shape whose longer sides have a length that is 1.5 times the central reinforcement plate 19, whose shorter sides have a length that is 0.5 times the central gusset 19, and whose thickness is equal to a thickness of the central gusset 19 (Figure 1, Figure 3, Figure 4, and Figure 8). Furthermore, the end gusset 21 has an end gusset body 21a formed in a rectangular plate shape, and three end coupling pins 21b designed for the baseplate 18 on both sides of the plate body. of end reinforcement 21a (Figure 1, in Figure 5, and Figure 8(b)). Additionally, each of the three end coupling pins 21b is formed at a substantial center of a square split plate when the end bracing plate body 21a is split into square plates, each side of which is a short side of the body. end reinforcement plate 21a. Consequently, in a state where the four base plates 18 are coupled by a central bracing plate 19, the two end coupling pins 21b of the three end coupling pins 21b of the end bracing plate 21 are inserted into the holes baseplate coupling hole 18b of a baseplate 18 respectively and that remaining end coupling pin 21b is inserted into the baseplate coupling hole 18b of the baseplate 18 adjacent to that baseplate 18 so that a end gusset 21 is placed on the outer edge of a central gusset 19, thereby the two plates 18 are coupled so that that end gusset 21 overlaps the two baseplates 18 (Figure 3(a) )). When the same work as that described above is repeated, the three end gusset plates are placed on the outer edge of that center gusset and aligned in a square frame shape while coupling the adjacent baseplates (Figure 3(b)) . In this embodiment, as shown in Figure 4, the plurality of end gusset plates 21 are placed on the outer edges of the plurality of central gusset plates 19 which extend narrowly in the horizontal direction and aligned in a square frame format while coupling the plates. adjacent base

18. Therefore, the end coupling pins 21b are press fitted or driven into the baseplate coupling holes 18b, and configured so that they can be prevented from being easily removed by vibration or the like.

[0037] It should be noted that reference numeral 21c in Figure 8(a) denotes a convex strip of engagement projected on a short side of a pair of short sides of the end reinforcement body 21a, and reference numeral 21d in Figure 8( b) denotes a concave short side engaging strip set back on the other short side of the pair of short sides of the end gusset body 21a. In addition, reference numeral 21e in Figure 8 denotes a concave long side engaging strip formed on each of both end portions of a pair of long sides of the end gusset body 21a. When the convex engaging strip 21c engages the concave short side engaging strip 21d or the concave long side engaging strip 21e, movement of the engaging reinforcing plates 21, 21 in the thickness direction is avoided. In addition, reference numeral 21f in Figure 8(b) denotes a lightweight concave portion formed on one side facing baseplate 18 on either side of the end gusset body 21a, and reference numeral 21g in Figure 8( a) denotes a plurality of lightweight concave portions formed in the longitudinal direction on an opposite side of the side facing baseplate 18 on either side of the end gusset body 21a.

[0038] On the other hand, the plurality of vertical gussets 17 have a plurality of outer vertical gussets 17a which maintain the outer shape 16 using outer spacers 24 and are erected at intervals in the longitudinal direction of the outer shape 16, and a plurality of inner vertical gussets 17b which maintain the inner shape 14 using inner spacers 26 and are raised at intervals in the longitudinal direction of the inner shape 14 (Figure 1). The outer spacers 24 and the inner spacers 26 are formed in the same shape with the same size. An outer gusset 28 is assembled by coupling the plurality of outer vertical gussets 17a and a plurality of outer horizontal gussets 27 in a truss pattern using a bonding or welding wire, and an inner truss gusset 31 is assembled by the assembly of the plurality of interior vertical gussets 17b and a plurality of interior horizontal gussets 29 in a lattice pattern with the use of bonding wire or soldering. A temporary bracing assembly 32 assembled by crossing a plurality of braces narrower than these vertical braces 28, 31 in the vertical, horizontal and height directions using bonding wire or welding is provided between the plurality of outer vertical braces 17a and the plurality of inner vertical gussets 17b, i.e., between the outer truss gusset 28 and the inner truss gusset 31. Furthermore, the plurality of outer truss gussets 28 is coupled to an outer face of the temporary gusset assembly 32 using the binding wire or welding, and the plurality of inner truss reinforcements 31 are coupled to an inner face of the temporary reinforcement assembly 32 by the binding wire or by welding, thereby fabricating a reinforcement assembly 33. The lower portion of this reinforcement assembly 33 is buried in the lower concrete slab 12. Furthermore, it is preferable to form the outer spacers 24 and the interior spacers. s 26 by mixing a metal wire, such as wire at a construction site or using a carbon steel metal rod or the like mixed into a predetermined shape in advance.

[0039] It should be noted that, as shown in Figure 5, the outer shapes 16, 16 which abut each other at a right angle are connected through the outer corner portion connecting plate 22 having a shape substantially similar to L. as seen in a flat view. A flat plate portion 22a of this outer corner portion connecting plate 22 is inserted between the base plate 18 and the end gusset plate 21 constituting an outer shaped end portion 16, and the other flat plate portion 22b is inserted between the base plate 18 and the end reinforcement plate 21 constituting an end portion of the other outer shape 16. Additionally, the inner shapes 14, 14 which abut each other at a right angle are connected through an inner corner portion connecting plate (not shown) having a substantially L-like shape as seen in a plan view. A flat plate portion (not shown) of this inner corner portion connecting plate is inserted between the base plate 18 and the end gusset plate 21 constituting an inwardly shaped end portion 14, and the other portion of flat plate (not shown) is inserted between base plate 18 and end reinforcement plate 21 constituting an end portion of the other inner shape 14. Furthermore, as shown in Figure 3(b), plastic decorative plate 34 can be mounted on a surface of the center gusset 19. In this embodiment, the decor board 34 has a decor board body 34a formed in a substantially square board shape, a pattern 34b which is raised on a surface of that decor board body 34a is made up of Mount Fuji and the sun, and four mounting studs 34c which are projected into a rear side of the decorative plate body 34a and inserted into the four hollow holes 19f of the central reinforcement plate 19 (Fig. to 3(b) and in Figure 9). When the underground beam 11 is exposed on the ground surface, mounting that decorative plate 34 on the surface of the central reinforcing plate 19 of the outer form 16 allows to improve the appearance of the underground beam 11. Therefore, the mounting pins 34c are engaged by press or led into the hollow holes 19f and configured so that they cannot be easily removed by vibration or the like. The outer corner portion connecting plate 22, the inner corner portion connecting plate, and the decorative plate 34 are made of a polyolefin resin (polypropylene, polyethylene and the like), a vinyl chloride resin, and the like. Furthermore, it is preferred to form the outer corner portion connecting plate 22 and the inner corner portion connecting plate with a thickness of approximately 1 cm to 2 cm and form the decorative plate 34 with a thickness of approximately 0.4 cm to 1.2 cm.

[0040] A description will now be determined in an assembly procedure of the thus configured underground beam 11. First, a hole having a lower portion larger than the lower slab 12 is dug into the ground, and the reinforcing assembly 33 is placed in a square frame shape in the lower portion of this hole. In this way, fresh concrete is poured into the lower portion of the hole, and the lower concrete slab 12 having the shape of a square plate is formed in the lower portion of the hole. At that time, a lower portion of the gusset 33 is buried in the lower slab 12. Subsequently, in the lower slab 12, the outer form 16 is formed by coupling the base plates 18, the central gussets 19 and the gussets of end 21 in the vertical and horizontal directions as shown in Figure 1 to Figure 4, and the inner shape 14 is formed by coupling the base plates 18, the central gusset plates 19, and the end gusset plates 21 in the vertical directions and horizontal as shown in Figure 1 to Figure 4. Additionally, the outer frame 16 is placed on the outer side of the gusset assembly 33 at a predetermined interval, ends of the outer spacers 24 on one side are locked onto the outer horizontal gussets 27 of the gusset. outer truss 28, and ends of outer spacers 24 on the other side are locked into locking holes 18i of baseplates 18 of outer form 16 (Figure 1). Accordingly, the outer shape 16 is maintained by the plurality of outer vertical gussets 17a through the plurality of outer spacers 24 and the plurality of outer horizontal gussets 27. Furthermore, the inner shape 14 is placed on the inner side of the gusset assembly 33 in a predetermined interval, ends of the inner spacers 26 on one side are locked into the inner horizontal gussets 29 of the inner truss gusset 31, and ends of the inner spacers 26 on the other side are locked into the locking holes 18i of the baseplates 18 of the inner form 14 Consequently, the inner shape 14 is maintained by the plurality of inner vertical gussets 17b through the plurality of inner spacers 26 and the plurality of inner horizontal gussets 29.

[0041] Thereby, as shown in Figure 5, the outer shapes 16, 16 that abut each other at a right angle are connected through the outer corner portion connecting plate 22, and the inner shapes 14, 14 that adjoining each other at a right angle are connected through the inner corner portion connecting plate. In the thus-assembled permanent shape 13, as compared to a case where the outer shapes and the inner shapes are formed using steel web, plywood and the like, the work to assemble the outer shape 16 and the inner shape 14 can be greatly shortened. . That is, the outer shape 16 and the inner shape 14 having the self-sustaining properties and the sturdiness can be easily assembled. In addition, fresh concrete is poured and hardened between the inner form 14 and the outer form 16 to form the underground beam 11 (Figure 1). At that time, even if a large amount of fresh concrete is poured between the inner shapes 14 and the outer shapes 16, the outer vertical ribs 17a maintain the outer shape 16 through the outer spacers 24, the inner vertical ribs 17b keep the inner frame 14 through the inner spacers 26 and therefore the underground concrete beam 11 having a predetermined shape can be formed without deforming the outer shape 16 and the inner shape 14. Furthermore, since the base plates 18, the central reinforcement plates 19 and end reinforcement plates 21 are made of plastic, base plates 18, center reinforcement plates 19 and end reinforcement plates 21 constituting outer shape 16 and inner shape 14 can be easily manufactured. Additionally, when the base plates 18, the center reinforcement plates 19 and the end reinforcement plates 21 are formed using residual plastic, the base plates 18, the center reinforcement plates 19 and the end reinforcement plates 21 constitute outer shape 16 and inner shape 14 may be unexpectedly manufactured. Second Mode

[0042] Figure 10 to Figure 13 show a second embodiment of the present invention. In Figure 10 to Figure 13, numerical references like those in Figure 1 to Figure 8 denote the same parts. In this embodiment, a sidewall 51 is a square cylindrical concrete sidewall provided to surround a rectangular parallelepiped-shaped storage complex 55 on a lower slab 52 to form a storage tank 50, and an outer surface of this sidewall 51 is formed of each outer shape 56 in a permanent way 53. The lower slab 52 is placed in a lower portion of a hole 59 dug in the ground. The sidewall 51 is formed in a square frame format using the permanent frame 53 having the outer frame 56, each inner frame 54, and a plurality of vertical gussets 57. As shown in Figure 10 and Figure 11, the complex storage 55 has a plurality of horizontal connecting body platforms 61 to 64 on a plurality of platforms constituted by aligning and connecting a plurality of square plate-shaped divider plates 58 within a horizontal plane, a plurality of cylindrical spacers 66 connected to each other or both to a lower surface and an upper surface of each of the plurality of divider plates 58, and an outermost layer portion 67 provided with the divider plates 58 and spacers 66 alternatively arranging in the vertical direction on the outermost side of storage complex 55. In addition, at least one cylindrical rib 58a, 58b is projected onto an inner surface. the lower portion of each divider plate 58, and at least one cylindrical rib 58c, 58d is projected on an upper surface thereof. In addition, each cylindrical spacer 66 is fitted to each of the cylindrical ribs 58a through

58b and thereby connected to one of or both the lower surface and the upper surface of each divider plate 58.

[0043] In this embodiment, two ribs that are the first cylindrical rib 58a having a small diameter and the second cylindrical rib 58b having a large diameter are concentrically formed on the lower surface of the divider plate 58, and two ribs that are the third cylindrical rib 58c having a small diameter and the fourth cylindrical rib 58d having a large diameter are concentrically formed on the upper surface of the divider plate 58 (Figure 10). The diameter of the first cylindrical rib 58a and the diameter of the third cylindrical rib 58c are equally formed, and the diameter of the second cylindrical rib 58b and the diameter of the fourth cylindrical rib 58d are equally formed. Furthermore, an insertion hole 58e into which a further described spindle tube 68 can be inserted is formed in a center of the divider plate 58 (Figure 10 and Figure 11). Reference numeral 58f in Figure 11 denotes a plurality of flow holes which are formed in the divider plate 58 and through which rainwater 70 (Figure 13) may pass. It should be noted that, although not shown, the engaged holes are formed in four corner portions of the divider plate 58 respectively, and a first engaging protrusion 71a of a first coupling piece 71 formed in a square plate shape or a second protrusion A second coupling piece (not shown) formed in a rectangular plate shape is configured to allow engagement with each of these engaged holes. That is, the plurality of divider plates 58 placed within the same horizontal plane are coupled by the first coupling piece 71 or the second coupling piece. Specifically, the respective corner portions of the four divider plates 58 adjacent to each other within the same horizontal plane are coupled together by the first coupling piece 71, and the respective corner portions of the two adjacent divider plates 58 placed on the outermost side within the same horizontal plane are coupled together by the second piece of couplings. Furthermore, it is preferred to form the divider plates 58, the first coupling pieces 71, and the second coupling pieces into a square plate format that is approximately 20 cm to 40 cm on one side using a polyolefin resin (polypropylene , polyethylene and the like), a vinyl chloride resin and the like.

[0044] In this modality, each of the spacers 66 is formed in a cylindrical shape and constituted so that an upper end thereof is fitted to the second large diameter cylindrical rib 58b of the divider plate 58 and a lower end thereof is fitted to the fourth large diameter cylindrical portion 58d of another divider plate 58 (Figure 10). Additionally, a plurality of flow holes 66a through which rainwater 70 (Figure 13) can pass is formed on an outer peripheral surface of each spacer 66. It is preferred to form spacers 66 using plastic that is the same as the material of the plates. partitions 58.

[0045] On the other hand, the concave portions 58g and the convex portions 58h in two rows in the thickness direction of the divider plate 58 and four rows in the longitudinal direction of the divider plate 58 are alternatively formed into a chessboard pattern (a pattern pattern) on the outer peripheral surface of the divider plate 58 according to each of the four sides (Figure 11). Furthermore, the alignment and connection of the plurality of dividing plates 58 to each other within the same horizontal plane allows to constitute the horizontal connecting bodies 61 to 64. In this case, the concave portions 58g and the convex portions 58h of the dividing plate 58 are fitted and loosely inserted into the convex portions 58h and the concave portions 58g of the adjacent divider plate 58, respectively. Consequently, the divider plate 58 and adjacent divider plate 58 can be prevented from moving at their interface.

[0046] In this modality, the horizontal connecting bodies 61 to 64 are formed in four stages, and consist of the first horizontal connecting body 61 in the lowest stage, the second horizontal connecting body 62 in a second stage of the bottom, the third horizontal connecting body 63 on a third stage of the bottom, and the horizontal connecting body 64 on a fourth stage of the bottom

(the uppermost stage) (Figure 13). Each of the first, third and fourth horizontal connecting bodies 61, 63 and 64 is formed in a square plate shape, and the second horizontal connecting body 62 is formed in a square frame shape. Furthermore, in this embodiment, the outermost layer portion 67 is provided on the outermost side of the storage complex 55, and an inner outermost layer portion 69 is provided as adjacent to the inner side of that outermost layer portion 67. The portion of outermost layer 67 and the inner outer layer portion 69 are constituted by alternately arranging divider plates 58 and spacers 66 in the vertical direction. That is, the outermost layer portion 67 and the inner outer layer portion 69 include not only the divider plates 58 and the spacers 66 stacked in the vertical direction between the divider plate 58 constituting the first horizontal connecting body 61 in the lowermost stage and the divider plate 58 constituting the fourth horizontal connecting body 64 in the uppermost stage, but also the divider plate 58 constituting the first horizontal connecting body 61 and the divider plate 58 constituting the fourth horizontal connecting body 64 in the uppermost stage. Furthermore, the divider plates 58 on the inner side of the inner outer layer 69 are arranged at an interval of one stage in the vertical direction. Consequently, the second horizontal connecting body 62 is formed in a square frame format consisting of divider plates 58 constituting only the outermost layer portion 67 and the inner outer layer portion 69 without arranging the divider plates 58 on the inner side of the portion. of inner outer layer 69.

[0047] On the other hand, the inner shape 54 of the permanent shape 53 is formed into a square cylindrical shape by disposing a plurality of inner plates 54a, and the outer shape 56 is formed into the same shape with the same size as the outer shape. in the first modality. Furthermore, the vertical gussets 57 have outer vertical gussets 57a which constitute the outermost layer portion 67 and are inserted into hollow holes (not shown) formed in the divider plates 58 so that they are placed on the outer side of the inner form 54 in the respective plates. dividers 58 from the first to the fourth horizontal connecting bodies 61 to 64. Additionally, the ends of the outer spacers 24 on one side are locked into the outer horizontal gussets 27 forming the outer truss gusset 28 together with the outer vertical gussets 57a, and ends of the themselves at another end are locked into locking holes 18i of the baseplates 18 of the outer shape 56, thereby the outer shape 56 is held by the outer vertical gussets 57a through the outer spacers 24 and the outer horizontal gussets 27. The inner shape 54 is formed into a square cylindrical shape by the arrangement of inner plates 54a of according to each stage the first to the fourth horizontal connecting bodies 61 to 64 which constitute the outermost layer portion 67 and are arranged at intervals in the vertical direction so that these plates come into contact with the portions of the plurality of spacers 66, which form outer faces of the outermost layer portion 67, constituting the outermost layer portion 67, viz., which come into line contact with these outer faces while encircling all of the plurality of spacers 66 constituting the outermost layer portion 67 (Figure 10 and Figure 11). It is preferred to form each inner plate 54a using a polypropylene plastic cardboard which is relatively light weight and has relatively high strength, and the inner plates 54a adjacent to each other are arranged to partially overlap (Figure 11). Therefore, a plurality of auxiliary receiving members 72 receiving inner shapes 54 together with spacers 66 constituting the outermost layer portion 67 are preferably inserted into flow holes 58f of the partition walls 58 constituting the outermost layer portion 67 Such auxiliary receiving member 72 is preferably formed from a vinyl chloride tube.

It should be noted that, in this modality, interior vertical braces, interior horizontal braces, interior truss braces, interior dividers, temporary brace mounting, and brace mounting in the first mode are not used, but the outer peripheral surface of storage complex 55 and outer truss gusset 28 (the plurality of outer vertical gussets 57a and the plurality of outer horizontal gussets 27) are covered with a truss-shaped reinforcing rod (not shown) formed by welding gussets which extend in vertical and horizontal directions.

[0048] It should be noted that reference numeral 19g in Figure 12 denotes four concave portions with notches formed in four corners of an opposite surface of a surface facing baseplate 18 of both surfaces of the central gusset body 19 of the outer shape 56, respectively. A 19h backing plate connecting hole is formed in a center of each of these 19g notched concave portions. Furthermore, when the four central gusset plates 19 are closely aligned in the vertical and horizontal directions, the four grooved concave portions 19g are combined in the center of these central gusset plates 19 to form a concave connecting plate accommodating portion 19i which can accommodate a square plate-shaped patch plate (not shown). Four gusset connecting pins (not shown) are designed on a rear side of the connecting plate, and inserting these gusset connecting pins into the gusset connecting holes 19h of the four center gusset plates 19 respectively connect the four central gusset plates 19. Therefore, the gusset connecting pins are press fitted or driven into the gusset connecting holes 19h and configured so that they cannot be easily removed by vibration or the like .

[0049] On the other hand, a spindle tube 68 extending in the vertical direction is provided to perforate the divider plates 58 and the spacers 66 constituting the outermost layer portion 67 and the inner outer layer portion 69 (Figure 10 and of Figure 11). Furthermore, a plurality of long holes 68a extending in the longitudinal direction of the spindle tube 68 are formed in an outer peripheral surface of the spindle tube 68 at predetermined intervals to prevent air accumulation from occurring (Figure 10). Furthermore, spindle tube 68 is provided to extend from the lower surface to the upper surface of storage tank 50 (Figure 10 and Figure 11). It should be noted that when the storage tank is relatively small in size and only relatively small strength is required, the spindle tube may be omitted.

[0050] The divider plates 58 that are placed on the inner side of the inner outer layer portion 69 and constitute the first horizontal connecting body 61 in the lowermost stage and the third horizontal connecting body 63 in the bottom third stage in the first to four horizontal connection bodies 61 to 64 are connected through a long spacer 73 configured to be longer than spacer 66 and extend into connection adapters and vertical direction 74 (Figure 11 and Figure 13). Additionally, the connecting adapter 74 has a connecting member 75 that connects the four divider plates 58 as one in the same plane and a funnel-shaped funnel member 76 that connects that connecting member 75 to the long spacer 73. A lower plate shaped square plate 77 is placed on a lower surface of the first horizontal connecting body 61 in the lowermost stage, and an upper square plate shaped plate 78 is placed on an upper surface of the fourth horizontal connecting body 64 in the most stage. top (Figure 13). In addition, an upper surface of the top plate 78 is covered with an impermeable sheet 79. Consequently, mud water is prevented from coming into contact with the storage tank.

50.

[0051] On the other hand, one end of a rainwater introduction tube 81 is inserted into the storage tank 50 (Figure 13). One base end of this rainwater inlet pipe 81 is connected to a dust removal management well 82 buried in the ground at a position larger than the storage tank 50, and this dust removal management well 82 is connected to a side trench 84 having a substantially U-like cross section through a rainwater intake pipe 83. The dust removal management well 82 has a first well 91 connected to the side trench 84 through the water intake pipe of rain 83 and a second well 92 provided to be adjacent to the first well 91. An intermediate lower wall 91a having an upper surface that slopes in a gradually declining direction is provided in the center of the first well 91 in the vertical direction. Furthermore, at the center of a lower portion of the first well 91, a right-hand top tube 91b is erected to pierce the intermediate bottom wall 91a, and an upper end of this right-hand top tube 91b is formed to slope in substantially the same direction as that. from the upper surface of the lower middle wall 91a. Furthermore, the base end of the rainwater introduction tube 81 is connected to a lower side surface of the upper right tube 91b. On the other hand, on the adjacent side surfaces of the first well 91 and the second well 92, an out-flow hole 91c and an inflow hole 92a which lead to a small amount of rainwater flowing down through the intermediate bottom wall 91a at light rain in the second well 92 are formed, respectively.

[0052] A procedure for assembling the thus configured storage tank 50 will now be described. First, the hole 59 having the lower portion wider than the lower slab 52 is dug into the ground, and the lower concrete slab 52 is placed in the lower portion of that hole 59 (Figure 13). Thus, the plurality of square plate-shaped divider plates 58, the cylindrical spacers 66, the first coupling piece 71, the second coupling piece, the spindle tubes 68 and the like are prepared, the storage complex 55 is constructed in the lower slab 52, and this storage complex 55 is accommodated in hole 59. In this case, the outermost layer portion 67 of storage complex 55 is first built into the lower slab 52 and then the inner side of the storage complex 55 is built, but permanent form 53 is built concurrently with this building on the inner side of storage complex 55.

[0053] A permanent form construction procedure will now be described with reference to Figure 10. First, the auxiliary receiving members 72 are inserted into the flow holes 58f of the divider plates 58 constituting the outermost layer portion 67 along of the outer face of the outermost layer portion 67. Thus, the inner shapes 54 in the three stages are formed into the square cylindrical shape respectively by arranging the plurality of inner plates 54a so that they come into contact with the portions forming the outer face of the outermost layer portion 67, of the plurality of spacers 66 constituting the outermost layer portion 67 according to each stage between the four-stage divider plates 58. Furthermore, the plurality of outer vertical gussets 57a are extended in the vertical direction so as to be placed on the outside of the plurality of inner plates 54a, and inserted into the hollow holes, which are parallel to the outer face of the outermost layer portion 67, of the plurality of divider plates 58 constituting the outermost layer portion 67 and is disposed at intervals in the vertical direction, thus the outer horizontal ribs 27 extending in the horizontal direction and the vertical ribs The outer trusses 57a are crossed, and their intersections are fixed by tie wires (not shown) to form the outer truss reinforcements 28. Subsequently, a water-blocking material (not shown) having water-swellable properties is disposed on the lower slab. 52 between the inner shapes 54 and the outer shapes 56 and then the outer peripheral surface of the storage complex 55 and the outer truss gussets 28 (the plurality of outer vertical gussets 57a and the plurality of outer horizontal gussets 27) are covered with truss-shaped reinforcing rebar (not shown).

[0054] In addition, the base plates 18 in the first stage and in the second stage of the outer forms 56 are mounted on the lower slab 52, these base plates 18 are coupled using the central reinforcement plates 19, the plurality of reinforcement plates 21 is placed on lower edges and both side edges of the plurality of central gusset plates 19 are closely aligned in the horizontal direction, adjacent base plates 18 are coupled using those end gusset plates 21, and outer shapes 56 which adjoining each other at a right angle are connected through the outer corner portion connecting plate 22, thereby forming the outer shapes 56 into a square frame shape at a predetermined interval from the outer vertical gussets 57a ( Figure 11). In that case, the reinforcing rods are placed between the outer vertical struts 57a and the outer shapes

56. Thus, one end of each outer spacer 24 is locked into each outer horizontal gusset 27, the other end thereof is locked into each locking hole 18i of the base plates 18 in the first stage, one end of another outer spacer 24 is It is locked into each outer horizontal brace 27, and the other end thereof is locked into each locking hole.

[0055] In addition, the base plates 18 in the third stage are stacked on the base plates 18 in the second stage, these base substrates 18 are coupled through the central reinforcement plates 19, the plurality of end reinforcement plates 21 is placed on the upper edges and both side edges of the plurality of central gusset plates 19 closely aligned in the horizontal direction, the adjacent base plates 18 are coupled using these end gusset plates 21, and the outer shapes 56, 56 that are in contiguity to each other at a right angle are connected through the outer corner portion connecting plate 22. In addition, one end of each outer spacer 24 is locked into each outer horizontal gusset 27, and the other end thereof is locked into each hole locking mechanism 18i of the baseplates 18 in the third stage. Consequently, the outer shapes 56 having the properties of self-sustaining and sturdiness can be easily assembled. Consequently, as compared to a case where steel screens or bricks are used as the outer shapes, the work of assembling the outer shapes 56 can be very shortened.

[0056] Thus, fresh concrete is poured and hardened between the inner shapes 54 and the outer shapes 56 to form the sidewall 51 (Figure 10, Figure 11, and Figure 13). In that case, since the auxiliary receiving members 72 as well as the plurality of spacers 66 constituting the outermost layer portion 67 receive the interior shapes 54, the spacers 66 and the auxiliary receiving members 72 receive a pressure from the fresh concrete acting in the interior forms 54. Consequently, it can be reliably prevent the storage complex 55 from deforming when casting fresh concrete between the interior forms 54 and the exterior forms 56. Additionally, even if the large amount of fresh concrete is poured between the inner shapes 54 and the outer shapes 56 at a time, the outer vertical gussets 57a hold the outer shapes 56 through the outer spacers 24, the inner shapes 54 are received by the auxiliary receiving members 72 along with the plurality of spacers. 66 constituting the outermost layer portion 67 and therefore the concrete sidewall 51 having a shape. the predetermined can be formed without deforming the outer shapes 56 and the inner shapes 54. Operations and effects other than those described above are substantially the same as the operations and effects of the first embodiment, thus omitting a repeated description. Third Mode

[0057] Figure 14 shows a third embodiment according to the present invention. In Figure 14, numerical references like those in Figure 1 to Figure 9 denote the same parts. In this modality, a hole is shallowly excavated, a lower slab is placed in a lower portion of that hole, and a storage tank is installed so that a lower portion of it is buried in the ground and an upper portion of it is projected into the ground . Furthermore, the decorative plates 34 are mounted on surfaces of central reinforcement plates 19 in an external form 106 permanently 103 forming a side wall of the storage tank projected into the ground. A pattern 34b made up of Mount Fuji and the sun is augmented on a surface of each of the decorative plates 34. Parts other than those described above are made up in the same way as those in the second mode.

[0058] In the permanent form 103 of the storage tank thus configured, since the decorative plates 34 having the pattern 34b consisting of

Mount Fuji and the raised sun therein are mounted on the surfaces of the central reinforcement plates 19 projecting into the ground, the appearance of the surfaces of the projecting portions into the ground portions of the storage tank can be improved. Operations and effects other than those described above are substantially the same as the operations and effects of the second modality, thus omitting a repeated description.

[0059] It should be noted that, in the first modality, the underground beam in the shape of a square frame is erected on the lower slab in the shape of a square concrete plate placed in the lower portion of the hole dug in the ground, but an underground beam in a frame shape triangular, in the form of a pentagonal frame, any other in the form of a polygonal or straight line frame can be erected on a lower slab in the shape of a triangular plate, in the form of a polygonal plate or any other polygonal shape. In addition, in the first and third modes, the pattern consisting of Mount Fuji and the sun is raised on the surface of each decorative plate, a pigeon or cherry blossom pattern, a manufacturer's logo or any other pattern can be raised or retracted. on the surface of each decorative plate. In addition, the lower slab is placed in the lower portion of the hole and the entire storage tank is buried in the ground in the second mode, the hole is superficially excavated, the lower slab is placed in the lower portion of this hole and the storage tank is installed from so that the lower portion of it is buried in the ground and the upper portion of it projected into the ground in the third mode, but the lower slab can be placed in the ground, and the entire storage tank can be installed in the ground. In this case, mounting the decorative plates on the surfaces of the center gussets of the outer form allows you to improve the surface appearance of the storage tank.

[0060] Additionally, horizontal connecting bodies are provided in three stages in the second mode, but horizontal connecting bodies can be provided in two stages or four or more stages. Furthermore, in the second embodiment, the divider plates on the inner side of the inner outer layer portion are arranged at an interval of one stage in the vertical direction, but the inner outer layer portion can be eliminated when an earth pressure from the surface top of the storage tank is relatively small. That is, the divider plates on the inner side of the outermost layer portion can be arranged at an interval of one stage in the vertical direction. In addition, the lower concrete slab is laid and then the concrete sidewall is provided on the lower slab in the second modality, but the lower concrete slab and sidewall can be formed simultaneously. Specifically, the braces welded in a lattice pattern can be shaped into a bowl-like shape to make a bowl-shaped rib, the plurality of bowl-shaped ribs can be aligned and placed in a lower portion of a hole in a Inversely, a first-stage horizontal connecting body and an outermost layer portion of a storage complex can be mounted on these members, and the fresh concrete can be poured into a portion that becomes a lower slab (a portion that includes the plurality of bowl-shaped gussets aligned in the lower portion of the hole) and a portion that becomes a sidewall (the interior of a sidewall forming member) from a plurality of positions in a state in which the member of the side wall forming was mounted to encircle the plurality of bowl-shaped gussets, thereby simultaneously forming the bottom slab and the side wall that are made of concrete.

LIST OF REFERENCE SIGNALS

[0061] 11 underground beam (side wall)

[0062] 12, 52 lower slab

[0063] 13, 53, 103 permanent form

[0064] 14 inner shape

[0065] 16, 56, 106 outer form

[0066] 17, 57 vertical reinforcement

[0067] 18 base plate

[0068] 19 central reinforcement plate

[0069] 21 end reinforcement plate

[0070] 34 decorative plate

[0071] 34b standard

[0072] 50 storage tank

[0073] 51 side wall

[0074] 55 storage complex

Claims (4)

1. Permanent form for forming concrete structures, which is provided to form a concrete structure consisting of a concrete sidewall erected on a lower concrete slab placed in a lower portion of a hole dug in the ground or ground, and remains on a sidewall surface, characterized by the fact that it comprises: an interior shape that forms an inside face of the sidewall; an outer shape that forms an outer face of the sidewall, and a plurality of vertical gussets that are disposed between the inner shape and the outer shape and maintain the outer shape or both the outer shape and the inner shape, wherein the outer shape or both the outer shape and the inner shape have: a plurality of base plates that are formed into a square plate shape using plastic and closely aligned in the vertical and horizontal directions; a plurality of central gussets which are formed sized into a square plate shape substantially equal to that of the baseplates with the use of plastic, couple four adjacent baseplates together, and closely aligned in the vertical and horizontal directions; and a plurality of end gusset plates that are formed into a rectangular plate shape with the use of plastic, placed on the outer edges of the plurality of central gusset plates closely aligned in vertical and horizontal directions, and aligned in a frame shape. square while attaching adjacent baseplates. 2. Permanent form for forming concrete structures, according to claim 1, characterized in that the plastic decorative plates are mounted on surfaces of the plurality of central reinforcement plates respectively, and a pattern is raised or indented on a surface of each of the decorative plates. 3. Permanent form to form concrete structures, according to claim 1 or 2, characterized in that the side wall is an underground concrete beam that is buried in the ground and provided in the lower slab to support a construction, one face The outer face of the underground beam is formed from the outer shape, and an inner face of the underground beam is formed from the inner shape. 4. Permanent form for forming concrete structures according to claim 1 or 2, characterized in that the sidewall is a square cylindrical concrete sidewall provided in the lower slab to surround a rectangular parallelepiped-shaped storage complex to form a storage tank, and an outer face of the side wall is formed from the outer shape.