JP2003105847A - Wall surface block and molding method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a structure of a mold for a wall surface block for a box culvert, etc., and enhance earthquake resistance of the wall surface block. SOLUTION: This wall surface block 2 has a second L-shaped wall surface panel 5 and a first wall surface panel 4, which face each other; and the panels 4 and 5 are coupled together by coupling members 9 and 9. The respective panels 4 and 5 are molded in twice by using the respective molds for the panels 4 and 5. Thus, structures of the molds for molding the respective panels 4 and 5 can be simplified; the mold can be easily disassembled even if a main reinforcement and a stirrup reinforcement are built in the mold; and the main reinforcement and the stirrup reinforcement can be easily implanted in the molding of the respective panels 4 and 5.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall block forming left and right outer wall surfaces of a prefabricated concrete structure such as a box culvert and a method for manufacturing the same.

Conventionally, as a substantially box-shaped concrete structure, for example, Japanese Patent Publication No. 49-13533.
In the gazette, an upper and lower blocks are tightened and joined by tightening steel rods inserted in vertical holes, and an assembly box culvert is proposed in which a plurality of these blocks are tightened and integrated by a tightening steel rod for connection in a longitudinal direction. Japanese Examined Japanese Patent Publication No. 62-54937
In the gazette, a top plate and a bottom plate are formed of a number of upper and lower half members made of prestressed concrete that are tensioned with PC steel in the width direction, and these upper and lower half members are drilled inside the lower side plate and the upper side plate. Between the formed recesses, PC steel members are connected to each other, and a passage for inserting a pull rod for applying tension to the PC steel members is formed in the side wall of the upper half member, and a plurality of upper and lower half members are arranged in the longitudinal direction. A block for an underdrain has been proposed which is clamped and fixed by a vertical tightening PC steel material. However, in the above-mentioned assembled box culvert, the box culvert is divided into upper and lower halves, and the tightening steel rods are inserted into the vertical holes of the upper and lower blocks for tension integration. If they do not match, the tightening steel rods cannot be inserted, and the work of assembling the upper and lower blocks is troublesome, and even with the above-mentioned underdrain block, there is a problem that the work of inserting the PC steel material and the straining work are troublesome. Furthermore, since the total weight does not change even if the device is divided into two parts, the hanging work during transportation and installation becomes complicated. Further, in the case of using the U-shaped upper and lower blocks, it is difficult to perform size adjustment in accordance with the site dimensions. Therefore, the applicant of the present application discloses, in JP-A-11-247273, an assembly box culvert including a pair of left and right wall walls made of precast concrete and a top plate member made of precast concrete for connecting the upper portions of these wall blocks. Is proposed. The wall block includes an inner wall panel and an outer wall panel formed higher than the inner wall panel. The inner wall panel and the outer wall panel are connected to each other at substantially the center by a connecting wall portion to form a cross section H.
By forming it integrally with the mold, a filling part with an open upper part is formed between each panel.This allows concrete to be placed in the filling part during construction and the top plate member to be fixed to the wall block. , A box-shaped prefabricated concrete structure is formed by placing concrete between the lower portions of the left and right wall blocks to form bottom slab concrete. According to this prefabricated concrete structure, the left and right wall blocks are arranged, the top plate member is arranged on the upper parts of the left and right wall blocks, and then the filling portion of the wall block is filled with concrete to make the prefabricated concrete structure. By forming the, the respective members such as the inner wall panel, the outer wall panel, and the top plate member that constitute the concrete structure are lightened, and the prefabricated concrete structure can be easily transported and installed. However, since the wall block is configured by integrally connecting the centers of the inner wall panel and the outer wall panel with the connecting wall portion and having an H-shaped cross section, the shape of the wall block is complicated. Therefore, if the wall block is integrally formed with a single mold, the structure of the mold is complicated. In particular, when using a concrete structure as a box culvert for an excavation tunnel, it is extremely important to increase the seismic resistance, and the wall block that supports the top plate member has a seismic resistant structure that withstands the force of an earthquake. It is necessary to insert a certain amount of rebar. Conventionally, when an inner wall panel a1 and an outer wall panel a2 as shown in FIG. 14 are connected by a connecting wall portion a3 to be used as a box culvert for an excavation tunnel, an inner wall panel a1 is formed along the length direction of the wall block a. Main rebars b1 and b2 are planted in the outer wall panel a2. However, even if the main rebars b1 and b2 are planted in the inner wall panel a1 and the outer wall panel a2 as described above, a sufficient seismic structure that can withstand the force of an earthquake cannot be obtained. Therefore, an object of the present invention is to provide a wall block that is excellent in earthquake resistance and that can simplify the structure of a mold for molding the wall block, and a manufacturing method thereof.

According to a first aspect of the present invention, there is provided a wall block made of concrete which constitutes a wall surface of a prefabricated concrete structure. The wall blocks are arranged facing each other with a space therebetween. The first wall surface panel and the second wall surface panel are provided, and a coupling member for interlocking and fixing the first wall surface panel and the second wall surface panel is provided between the first wall surface panel and the second wall surface panel. According to the structure of claim 1, the wall blocks are combined to fill the filling portion formed between the first wall panel and the second wall panel with the filling concrete to form the structure. By constructing the structure by combining the wall blocks in this way, the structural members of the structure are lightweight and easy to transport and install.
A wall block according to a second aspect of the present invention is the wall block according to the first aspect, in which main reinforcing bars are planted in the first and second wall panels and surround the main reinforcing bars of the first and second wall panels. It is provided with stirrup rebar.
According to the structure of claim 2, when the filling portion is filled with concrete, the stirrup rebar between the first wall surface panel and the second wall surface panel is planted, and the stirrup rebar is planted inside the first wall panel and the second wall panel. The strength of the wall block is improved by the stirrup rebar on the installed main rebar and the filled concrete, resulting in a wall structure with excellent earthquake resistance. The wall surface block of claim 3 of the present invention is the wall surface block of claim 1 or 2, wherein the first wall surface panel and the second wall surface panel are connected and fixed by a plurality of connecting members, and the first wall surface is connected by these connecting members. A concrete filling portion is formed between the panel and the second wall surface panel, and a communication portion that connects the filling portions of the adjacent wall surface blocks to each other is formed between the connecting members. According to the configuration of claim 3, the filling portions of the adjacent wall block are not partitioned by the connecting member that connects the first wall panel and the second wall panel, and the adjacent filling portions are mutually connected by the communicating portion between the connecting members. Even if the filling portion formed in any wall surface block is connected to the concrete, the filling portion of the adjacent wall surface block is filled from the filling portion through the communication portion. A wall surface block according to claim 4 of the present invention is the wall surface block according to any one of claims 1 to 3, wherein the first wall surface panel has a bottom plate and a side plate, and is formed in an L shape. The second wall panel is formed in a flat plate shape facing the side plate.
The wall panel is supported by the bottom slab of the first wall panel and is disposed inside the side slab to form the left and right outer wall surfaces of the prefabricated concrete structure by the first and second wall panels. According to the structure of claim 4, the outer wall surface composed of the first wall surface panel and the second wall surface panel is arranged on the left and right, and the top plate member is arranged on the upper portion of the second wall surface panel.
A filling portion formed between the wall panel and the second wall panel is filled with filled concrete to form a box-shaped structure.
By thus constructing the structure by combining the first wall surface panel, the second wall surface panel and the top plate member, the structural members of the structure are lightweight and easy to transport and install. The wall surface block according to claim 5 of the present invention is the wall surface block according to any one of claims 1 to 3, wherein the first wall surface panel and the second wall surface panel each have an overhanging portion projecting downward to the outside. Is formed symmetrically, and the first wall surface panel and the second wall surface panel are opposed to each other to form a partition wall for partitioning the space portion of the prefabricated concrete structure into left and right. According to the structure of claim 5, the box-shaped structure is constructed by combining the left and right outer wall surfaces and the top plate member, and the partition wall is arranged in the center of the structure, whereby the space portion of the structure is defined by the partition wall. It is divided into left and right. By thus constructing the structure by combining the left and right side walls, the top plate member and the partition wall, the structural members of the structure are lightweight and easy to transport and install. A method for manufacturing a wall block according to claim 6 of the present invention is the method according to claim 1.
5. A method for manufacturing a wall surface block, comprising: forming a wall surface block mold according to any one of 5 to 5, and filling the mold wall with concrete to mold the wall surface block; A first formwork to be formed and a second formwork to form the second wall panel are provided, and a form part to form the connecting member is formed on one of the first and second formwork,
The wall surface block is divided into two parts by the first and second molds, and at the time of the first forming step, either one of the first or second wall surface panel and the connecting member are integrated. The first wall surface panel and the second wall surface panel are integrated by integrally forming the other wall surface panel and the connecting portion during the second molding step. Claim 6
According to the manufacturing method of the wall surface block, when molding the wall surface block, the first wall surface panel and the second wall surface panel are molded by dividing the first wall surface panel and the second wall surface panel twice. The structure of each mold can be simplified, the dimensions of the first wall panel and the second wall panel can be easily changed, and the cost for modifying the mold can be reduced. Also,
By molding the first wall surface panel and the second wall surface panel in two steps, it is easy to assemble and dismantle each formwork for molding the first wall surface panel and the second wall surface panel. The forming work of the second wall panel is also easy. Furthermore, main rebars are planted inside the first wall panel and the second wall panel at the time of forming the wall block, and stirrup rebars are planted in the concrete filled in the filling portion so as to surround the main rebars. It Moreover, the shear strength of the wall block is improved by arranging the stirrup rebar. Further, since the reinforcing bars can be reinforced during the forming of the wall block, the reinforcing work in the field work can be omitted.
According to the method for manufacturing a wall block according to claim 7, a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete to form the wall block. A method of manufacturing a wall block to be molded, comprising: a first mold for molding the first wall panel;
A second mold for molding the wall surface panel is provided, and the first and second wall surfaces are individually molded by the first and second molds, and separately from the first and second wall panels. A connecting member is formed, and the first wall panel and the second wall panel are connected by this connecting member. According to the configuration of claim 7, at the time of construction, the first wall surface panel and the second wall surface panel are divided and individually molded, so that the first wall surface panel is installed along the first wall surface panel laid earlier. Place rebar along the length. After that, by fixing the second wall panel to the first wall panel by the connecting member, a wide space for arranging the reinforcing bars to be inserted between the first wall panel and the second wall panel at the end of the wall block. Since it is not necessary to secure the above, it is possible to freely set the laying position of the wall block without being restricted by the reinforcing bar.

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 to 7,
The concrete structure 1 includes left and right wall blocks 2 and 2 made of precast concrete, which are outer wall surfaces of the concrete structure 1, and a top plate member 3 made of precast concrete that connects the upper parts of the wall blocks 2 and 2. . The wall surface block 2 is composed of a first wall surface panel 4 serving as an outer wall thereof and a second wall surface panel 5 serving as an inner wall, and the first wall surface panel 4 is formed in an L-shaped cross section having a bottom plate 7 and a side plate 8. On the other hand, the second wall surface panel 5 is formed in a vertically elongated rectangular shape that is lower than the side plate 8 so as to face the side plate 8, and the support leg 6 is integrally formed at the center of the lower end thereof. Further, between the first wall surface panel 4 and the second wall surface panel 5, two connecting members 9 for keeping the distance between the respective panels 4, 5 are provided.
9 are provided at intervals vertically. The connecting members 9 and 9 are each formed in a prismatic shape.
9 forms a concrete filling portion 10 having an open top between the second wall panel 5 and the first wall panel 4. Further, a communication portion 16 is formed between the connecting members 9 and 9 and the bottom plate 7 on the lower side, and when the wall surface blocks 2 are connected in the longitudinal direction, each wall surface block 2 is formed.
The filling section 10 is communicated by the communication section 16. As shown in FIG. 3, the top plate member 3 is formed in a T-shaped cross-section with a convex wall surface 11 projecting from the central portion thereof. A recess 12 is formed between 11 to fill the concrete. Further, the second wall surface panel 5 is formed on the left and right sides of the top plate member 3 so as to be inclined substantially downward.
Is provided on the upper surface of the second wall panel 5 and the inner surface of the mounting portion 13 of the top plate member 3 is formed with continuous curved portions 14 and 15, respectively. . The numeral 20 is continuously placed in the recess 12 formed between the filling portion 10 formed between the first wall surface panel 4 and the second wall surface panel 5 and the convex wall surface 11 of the top plate member 3. In this example, a substantially L-shaped reinforcing bar 21 is embedded in the filling concrete 20 over the filling portion 10 and the top plate member 3. Further, in the figure, 22 is bottom slab concrete formed by cast-in-place concrete, and 23 and 24 are first wall panel 4
The main reinforcing bars to be planted in the second wall panel 5, and 25 are stirrup reinforcing bars surrounding these main reinforcing bars 23 and 24. Next, in FIG.
A method of manufacturing the wall surface block 2 will be described with reference to FIG. 7. The wall block 2 is molded by pouring concrete into the mold, but in this embodiment, the first wall panel 4 is molded by the first mold 30, and the second wall panel 5 and the connecting member 9 are molded. Molded with the second formwork 31, ie the second formwork
A mold part 32 for molding the connecting member 9 is integrally formed on the 31. Then, first, the second wall surface panel 5 and the connecting member 9 are simultaneously molded by the second frame 31 and the frame portion 32. As shown in FIG. 4 (b), inside the second form frame 31 for molding the second wall surface panel 5, as shown in FIG.
Concrete is poured into the second formwork 31 with 25 being arranged. As a result, the second wall surface panel 5 in which one ends of the main reinforcing bar 23 and the stirrup reinforcing bar 25 are planted is molded. Thereafter, as shown in FIG. 6 (a), the second wall surface panel 5 is turned over, and the respective end portions of the connecting members 9 and 9, the stirrup rebar 25 and the support leg 6 are placed in the first formwork 30. The first wall surface panel 4 is molded by filling with concrete in the inserted state. Thus, by forming the wall surface block 2 in two steps, as shown in FIG.
And the second wall panel 5 are integrally connected by the connecting members 9 and 9 and the supporting leg 6. As shown in FIG. 6B, both ends of the main rebars 23, 24 and the stirrup rebar 25 are planted in the first wall panel 4 and the second wall panel 5 thus formed. Filling part 10 in which a part of 25 is formed between the first wall surface panel 4 and the second wall surface panel 5
Is located in. Further, as shown in FIG. 7, the connecting members 9 for connecting the first wall surface panel 4 and the second wall surface panel 5 are formed with a vertical interval, and the lower connecting member 9 and the bottom plate 7 are connected.
Since and are formed separately, these connecting members 9, 9
Between the bottom plate 7 and the connecting member 9 on the lower side.
Will be formed. The main wall reinforcements 23 and 24 are planted in the first wall panel 4 and the second wall panel 5, respectively, and the stirrup reinforcement 25 is arranged so as to surround the main reinforcements 23 and 24, which is excellent in earthquake resistance. The wall block 2 is formed. Next, a method of constructing the concrete structure 1 will be described. First, at the construction site, the bottom plate 7
The bottom plate 7 is placed by leveling the part on which is placed or by finishing with discarded concrete or the like, and wall blocks 2 and 2 which are outer wall faces of the concrete structure 1 are erected on both left and right sides. In this case, since the wall block 2 has the bottom plate 7,
It is self-supporting and has excellent stability. Next, the top plate member 3 is lifted, and the mounting portions 13 and 13 thereof are mounted on the second wall surface panels 5 and 5 of the left and right wall surface blocks 2 and 2 and fixed by anchor bolts (not shown) or the like. After assembling the wall block 2 and the top plate member 3 in this way,
A filling portion having an upper opening between a first wall surface panel 4 and a second wall surface panel 5 that form the wall surface block 2 by arranging a plurality of wall surface blocks 2 and top plate members 3 in the length direction.
Along with the formation of the filling portion 10, a recess 12 is formed between the projecting wall surfaces 11 of the filling portion 10 in a continuous manner. Further, in the filling portion 10, a force distribution muscle 61 that is installed between the first wall surface panel 4 and the second wall surface panel 5 is arranged. Then, after arranging the L-shaped reinforcing bar 21 in the filling portion 10 and the recess 12, the filling concrete 20 is poured by placing concrete in the filling portion 10 of the wall surface block 2 and the recess 12 of the top plate member 3. The stirrup reinforcing bar 25 and the distributing bar 61 reinforcing bar 21 are planted therein, and the adjacent wall block 2 and top plate member 3 are integrated with each other.
Further, the filling portions 10 of the adjacent wall surface blocks 2 are not partitioned by the connecting member 9 that connects the first wall surface panel 4 and the second wall surface panel 5, and the upper and lower connecting members 9 and 9 are connected.
The adjacent filling section 10 communicates with each other by the communication section 16 formed between the bottom plate 7 and the bottom plate 7. As a result, even if the filling portion 10 formed on an arbitrary wall surface block 2 is filled with concrete, the concrete flows from the communicating portion 16 of the connecting member 9 forming the filling portion 10 to the filling portion 10 of the adjacent wall surface block 2. Is filled. Further, by placing concrete between the lower portions of the wall surface blocks 2 and 2 to form the bottom slab concrete 22, the box-shaped structure 1 is formed. This structure 1
When used as embankment or box culvert buried in the ground, pavement (not shown) is applied on bottom slab concrete 22, and when used for small bridges, etc. (Not shown). The prefabricated concrete structure 1 configured as described above is for assembling the wall block 2 and the top plate member 3 on site, and is advantageous for manufacturing products tailored to the site. In addition, in the present embodiment, when the wall surface block 2 is formed, the first wall surface panel 4 and the second wall surface panel 5 are formed by dividing the first wall surface panel 4 and the second wall surface panel 5 twice. It is possible to simplify the structure of the molds 30 and 31 to be used, to easily change the dimensions of the first wall panel 4 and the second wall panel 5, and to reduce the cost for modifying the mold. In addition, each mold 30 and 31 for molding the first wall surface panel 4 and the second wall surface panel 5
Is easy to assemble and disassemble, and the forming work of the first wall surface panel 4 and the second wall surface panel 5 is also easy. Further, when the wall block 2 is formed, main reinforcing bars 23, 24 are planted inside the first wall panel 4 and the second wall panel 5, and a stirrup reinforcing bar 25 is provided so as to surround the main reinforcing bars 23, 24. Can be easily arranged. In this way, the wall blocks 2 are arranged with main reinforcing bars 23, 24 planted in the first wall panel 4 and the second wall panel 5, and a stirrup reinforcing bar 25 surrounding the main reinforcing bars 23, 24. The strength of the wall surface block 2 is increased by the reinforcing bars 23, 24, 25, and excellent earthquake resistance can be obtained. Furthermore, when the wall block 2 is formed, the reinforcing bars 23, 2
Since 4,25 can be laid out, the laying work on site can be omitted, the workability is excellent, and the construction period can be shortened. 8 to 11 show a second embodiment of the present invention, parts having the same functions as those of the first embodiment are designated by the same reference numerals, and only different parts will be described. In the above-mentioned embodiment, the wall block 2 is divided into two parts and molded, but in this embodiment, the first wall panel 4 and the second wall panel 5 constituting the wall block 2 are first and second, respectively. The first wall surface panel 4 and the second wall surface panel 5, which are individually formed by the two molds 35 and 36 and formed in this way, are connected by the connecting member 39. The connecting member 39 is
For example, it is made of steel, and the first wall surface panel 4 and the second wall surface panel 5 are manufactured separately. On the other hand, the first wall surface panel 4
Further, the second wall panel 5 is embedded with a mounting member 38 for mounting the coupling member 39 at the time of molding. That is, the mounting bracket 38
Is incorporated in the first and second molds 35, 36 for molding the second wall panel 5 and the first wall panel 4, and the respective molds 35, 36 are
The fittings 38 are embedded in the first wall panel 4 and the second wall panel 5 by filling the concrete 36. In this manner, the first wall surface panel 4 and the second wall surface panel 5 are independently molded by the respective molds 35 and 36, and then the mounting metal fittings are planted in the first wall surface panel 4 and the second wall surface panel 5. The first wall surface panel 4 and the second wall surface panel 5 are connected by the connecting member 39 by connecting and fixing the connecting members 39, 39 to the 38, 38, respectively. When molding the first wall surface panel 4 and the second wall surface panel 5 with the respective molds 35, 36, the main wall reinforcements 23, 24 are laid in the respective molds 35, 36 to form the first wall surface panel 4 respectively. And the second wall panel 5
The main rebars 23 and 24 are respectively buried in. In this embodiment configured as described above, the L-shaped first wall panel 4 and the substantially flat second wall panel 5 are independently molded by the first and second molds 35 and 36, respectively. Therefore, similar to the first embodiment, the shapes of the first and second molds 35 and 36 can be simplified, and the dimensions of the first wall panel 4 and the second wall panel 5 can be easily changed. The cost of modifying the formwork can be reduced. Further, the assembling and disassembling work of each form 35, 36 is also easy. In addition, the first wall surface panel 4 and the second wall surface panel 5 are completely separated from each other, so that the first wall surface panel 4 of the wall surface block 2 is first laid during the construction and then the second wall surface panel 5 is installed. Can be retrofitted to the first wall panel 4 by the connecting member 39. As a result, the installation position of the wall surface block 2 can be freely selected without any positional restriction. That is, as in the first embodiment, the first wall panel 4 and the second wall panel 4
The wall blocks 2 that are integrated with the wall panel 5 are laid side by side in the length direction, and in order to firmly integrate them, the first
A plurality of horizontal reinforcing bars 40 between the wall panel 4 and the second wall panel 5
When passing through, in the structure in which the first wall panel 4 and the second wall panel 5 are integrated, a reinforcing bar is provided between the first wall panel 4 and the second wall panel 5 from either end of the wall block 2. Since it is necessary to pass the horizontal reinforcing bar 40, it is necessary to secure a wide space for arranging the horizontal reinforcing bar 40 on the insertion side of the horizontal reinforcing bar 40 by the length of the reinforcing bar. For this reason, there are restrictions on the starting position of the wall block 2 such that the wall block 2 is laid starting from the center or left or right, or the wall block 2 is laid sequentially from one side. Further, to set the total length of the assembled concrete structure 1 in which the wall blocks 2 are arranged side by side according to the length of the horizontal reinforcing bar 40 to be inserted, or to construct the assembled concrete structure 1 longer than the length of the horizontal reinforcing bar 40. A narrow assembled concrete structure 1
Since it is necessary to add the horizontal rebar 40 inside, workability is extremely poor. However, as in the present embodiment, the first wall surface panel 4 and the second wall surface panel 5 are divided and molded, so that the first wall surface panel 4 is installed as shown in FIG. After arranging the horizontal reinforcing bars 40 along the fourth wall 4, the second wall surface panel 5 is fixed to the first wall surface panel 4 by the connecting member 39.
The horizontal reinforcing bars 40 can be easily arranged between the wall panels 5. Thereby, the laying position of the wall surface block 2 can be freely determined. 12 and 13 show a third embodiment of the present invention. The parts having the same functions as those of the respective embodiments are designated by the same reference numerals, and only different parts will be described. In each of the above-described embodiments, the first wall surface panel 4 and the second wall surface panel 5 form left and right wall surface blocks 2 and 2 which are the outer wall surfaces of the concrete structure 1, and the first wall surface panel 4 and the second wall surface panel 5 are formed. Although an example in which the box-shaped concrete structure 1 is configured by the wall blocks 2 and 2 and the top plate member 3 configured by is shown, in the present embodiment, the left and right wall blocks 2 and 2 and the top plate member 3 are thus configured. The first wall surface panel 50 and the second wall surface panel 51 are provided with a partition wall 55 which is erected at the center of the concrete structure 1 to be constructed and divides the interior of the concrete structure 1 into the left and right spaces 1A and 1B.
It is composed by. That is, as shown in FIG. 12, the first wall surface panel 50 and the second wall surface panel 51 forming the partition wall 55 are formed in the same shape and are arranged symmetrically in the left-right direction. The first wall surface panel 50 and the second wall surface panel 51 are formed in a vertically long rectangular shape, and a pair of left and right support legs 56 and 57 are integrally formed at the center of the lower end thereof, and the lower ends of the respective support legs 56 and 57 are outwardly formed. Overhanging portions 58 and 59 are formed so as to project to the. Further, between the first wall surface panel 50 and the second wall surface panel 51, two connecting members 60, 60 for holding the space between the respective panel 50, 51 are provided at intervals vertically. In addition, the first wall panel 50 and the second wall panel 51
As described in the first embodiment, the partition wall 55 molded by means of the main rebars which are molded by the first and second molds (not shown) and are planted in the respective wall panels 50, 51 ( (Not shown)
The first wall panel 50 with the stirrup rebar 25 surrounded by
It is arranged in the filling portion 62 formed between the second wall panel 51 and the second wall panel 51. In the present embodiment configured as described above, the assembled concrete structure 1 is for assembling the wall block 2, the top plate member 3 and the partition wall 55 on site.
At the construction site, the parts on which the bottom slab 7 is placed are leveled or finished by discarding concrete or the like to place the bottom slab 7, and the wall blocks 2 and 2 are erected on both left and right sides, and A partition wall 55 is erected in the middle. In this case, since the wall block 2 has the bottom plate 7 and the partition walls 55 are formed with the overhanging portions 58 and 59, the wall block 2 and the partition wall 55 are self-supporting and excellent in stability. Next, the top plate member 3 is lifted up and its mounting portion is placed.
13, 13 are installed between the second wall panel 4, 4 of the left and right wall blocks 2, 2 and the first wall panel 50 and the second wall panel 51 of the partition wall 55, and by an anchor bolt (not shown) or the like. Fix it. After the wall block 2 and the partition wall 55 and the top plate member 3 are assembled in this way, the wall block 2 is separated by arranging the wall block 2 and the partition wall 55 and the top plate member 3 in the longitudinal direction. A filling portion 10 having an upper opening is formed between the first and second wall surface panels 4 and 5, and an upper portion is opened between the first and second wall surface panels 50 and 51 forming the partition wall 55. The filling portion 62 is formed,
The filling portions 10 and 62 and the recess 12 formed between the projecting wall surface 11 are continuous. Further, the stirrup reinforcing bar 25 and the force distributing bar 61 are arranged in each of the filling sections 10 and 62. Then, after arranging the L-shaped reinforcing bar 21 in the filling portion 10 and the recess 12, the filling concrete 20 is poured by placing concrete in the filling portion 10 of the wall surface block 2 and the recess 12 of the top plate member 3. The stirrup reinforcing bar 25, the force distributing bar 61 and the reinforcing bar 21 are planted therein, and the adjacent wall block 2, partition wall 55 and top plate member 3 are integrated with each other. In addition, the filling portion 1 of the adjacent wall block 2
0 and 62 are not partitioned by the connecting member 9 that connects the first wall surface panel 4 and the second wall surface panel 5 and the connecting member 60 that connects the first wall surface panel 50 and the second wall surface panel 51,
The adjacent wall block 2 and the filling portions 10 and 62 of the partition wall 55 communicate with each other. As a result, even if the filling portions 10 and 62 of the arbitrary wall block 2 and the partition wall 55 are filled with concrete, the filling portions 10 and 6 of the adjacent wall block 2 extend from the filling portions 10 and 62.
2 is filled with concrete. In addition, by placing concrete between the wall blocks 2 and 2 and the lower part of the partition wall 55 to form the bottom slab concrete 22, the box-shaped structure 1 is formed, and the inside of this structure 1 is partitioned. Wall 55
It is divided into the left and right spaces 1A and 1B. When this structure 1 is used as embankment or a box culvert buried in the ground, pavement (not shown) is applied on the bottom slab concrete 22, and when it is used for a small bridge, etc., on the filled concrete 20. Pavement (not shown) is applied.
In the present embodiment configured as described above, when the partition wall 55 of the structure 1 is molded, the first wall surface panel 50 and the second wall surface panel 51 are molded twice so that the first wall surface is formed. The structure of the mold for molding the panel 50 and the second wall panel 51 can be simplified, the dimensions of the first wall panel 50 and the second wall panel 51 can be easily changed, and the cost of modifying the mold can be reduced. You can In addition, it is easy to assemble and dismantle each form for molding the first wall panel 50 and the second wall panel 51,
The forming work of the first wall surface panel 50 and the second wall surface panel 51 is also easy. Further, when the partition wall 55 is formed, the first wall panel
Main reinforcing bars are planted inside the 50 and the second wall panel 51, and the stirrup reinforcing bars 25 can be easily arranged so as to surround the main reinforcing bars. Thus, on the partition wall 55,
The main reinforcing bars planted in the first wall surface panel 50 and the second wall surface panel 51 and the stirrup reinforcing bars 25 are arranged, the strength of the partition wall 55 is increased, and excellent earthquake resistance can be obtained. Furthermore, since the reinforcing bars can be laid out when the wall block 2 is formed, the laying work on site can be omitted, the workability is excellent, and the construction period can be shortened. In the present embodiment, the case where the molding is performed twice as in the first embodiment has been described as an example, but as shown in the second embodiment, the first wall panel 50 and the second wall panel are formed. 51 and 51 may be formed independently of each other. Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the respective embodiments. For example, a reinforcing bar structure integrating wall surface blocks is not limited to the embodiments. , May be set appropriately. In addition, in the second embodiment,
Although the example using the steel connecting member for connecting the outer wall panel and the inner wall panel is shown, the material and shape of the connecting member may be appropriately selected.

According to the wall surface block of the first aspect of the present invention, the wall surface block is made of concrete which constitutes the wall surface of the prefabricated concrete structure, and the wall surface blocks are arranged facing each other with a space therebetween. First wall panel and second
Since the wall panel is provided, and the connecting member for interlocking and fixing the first and second wall panels is provided between the first and second wall panels, the weight of the structural member is reduced. , Easy to transport and install. According to the wall block of claim 2 of the present invention, in the wall block of claim 1, main rebars are planted in the first and second wall panels, and main rebars of the first and second wall panels are provided. Since the stirrup rebar surrounding the wall is provided, the main rebar is planted in the first and second wall panels, and the stirrup rebar is planted in the concrete filled in the filling portion between the inner wall panel and the outer wall panel. It is installed, the strength of the wall block is improved, and the earthquake resistance can be enhanced. According to the wall surface block of claim 3 of the present invention, in the wall surface block of claim 1 or 2, the first wall surface panel and the second wall surface panel are connected and fixed by a plurality of connecting members, and the first and second wall surface panels are connected by the connecting members. Since a concrete filling portion is formed between the first wall surface panel and the second wall surface panel, and a communication portion that connects the filling portions of the adjacent wall surface blocks to each other is formed between the connecting members, The filling portion of the wall block is not partitioned by the joining member, the adjacent filling portions communicate with each other by the communicating portion formed between the joining members, and the filling portion formed on any wall block is filled with concrete. Also, it is possible to fill the filling portion of the adjacent wall block from the filling portion through the communication portion.
According to the wall block of claim 4 of the present invention,
The wall block according to any one of 3, wherein the first wall panel is formed in an L shape having a bottom plate and a side plate, and the second wall panel is a flat plate facing the side plate. The second wall panel is supported by the bottom slab of the first wall panel and is disposed inside the side slab so that the left and right outer wall surfaces of the prefabricated concrete structure are formed by the first and second wall panels. Since it is formed, the structural members of the structure are lightened, and the transportation and installation are easy. According to the wall block of claim 5 of the present invention, claims 1 to 3
In the wall surface block according to any one of items 1 to 3, the first wall surface panel and the second wall surface panel are formed symmetrically, each having a projecting portion projecting to the outside in the lower portion, By forming a partition wall that partitions the space portion of the prefabricated concrete structure into the left and right sides by facing the second wall panel, the space portion of the structure is partitioned into the left and right by the partition wall. In addition, by constructing the structure by combining the left and right side walls that are outer wall surfaces, the top plate member, and the partition wall, the structural members of the structure become lightweight,
Easy to transport and install. According to the method for manufacturing a wall block of claim 6 of the present invention, any one of claims 1 to 5
Item 1. A method of manufacturing a wall surface block in which a mold for molding the wall surface block is provided, and the wall surface block is molded by filling the mold with concrete, the first mold for molding the first wall surface panel. A frame and a second mold for molding the second wall panel are provided, and a mold part for molding the coupling member is formed on one of the first and second molds, and the first and second molds are formed. The wall surface block is molded twice by a mold, and the first or second wall block is formed in the first molding step.
One of the wall panels is integrally formed with the connecting member, and the other wall panel and the connecting portion are integrated with each other during the second molding step to integrate the first wall panel and the second wall panel. Therefore, the structure of each mold for molding the first wall panel and the second wall panel can be simplified, and the dimensions of the first wall panel and the second wall panel can be easily changed, and the mold can be modified. The cost can be reduced. In addition, it is easy to assemble and dismantle each of the molds for molding the first wall panel and the second wall panel.
It is easy to mold wall panels. Furthermore, when molding the wall block or partition wall, the first wall panel and the second wall panel
The main reinforcing bars are planted inside the wall panel, and the stirrup reinforcing bars are planted in the concrete filled in the filling portion so as to surround the main reinforcing bars, whereby the strength of the wall block or the partition wall is enhanced. Furthermore, since the reinforcing bars can be reinforced when molding the wall block or partition wall,
It is possible to omit the bar arrangement work in the field work. According to the method for manufacturing a wall block according to claim 7, a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete to form the wall block. A method for manufacturing a wall block to be molded, comprising: a first mold for molding the first wall panel and a second mold for molding a second wall panel, and the first and second molds. While individually molding the first and second wall surface panels, a connecting member is formed separately from the first and second wall surface panels, and the first wall surface panel and the second wall surface panel are connected by this connecting member. Therefore, the starting position for laying the wall block or the partition wall can be freely set without being restricted by the reinforcing bars arranged between the first wall panel and the second wall panel.

[Brief description of drawings]

FIG. 1 is a perspective view of a side wall panel showing a first embodiment of the present invention.

FIG. 2 is a sectional view of the assembling concrete structure.

3 is a sectional view taken along line AA of FIG.

4 shows the same method of forming the inner wall panel, FIG.
FIG. 4A is a cross-sectional view of the inner wall panel viewed from the front, FIG.
(B) is sectional drawing of the inner wall panel seen from the side surface direction.

FIG. 5 is a perspective view of the inner wall panel of the same.

6 shows the same as above, showing a method for forming an outer wall panel, FIG.
6A is a cross-sectional view of the outer wall panel viewed from the front direction, FIG.
(B) is sectional drawing of the outer wall panel seen from the side surface direction.

FIG. 7 is a perspective view of the wall block after the molding.

FIG. 8 shows a method for forming a second wall surface panel according to the second embodiment of the present invention, FIG. 8 (a) is a sectional view of the second wall surface panel seen from the front direction, and FIG. 8 (b) is a side view. Second seen
It is sectional drawing of a wall surface panel.

FIG. 9 shows the same method of forming the first wall panel, FIG.
FIG. 9A is a sectional view of the first wall panel viewed from the front side, and FIG. 9B is a sectional view of the first wall panel viewed from the side.

FIG. 10 is an exploded perspective view showing a construction procedure at the time of construction.

FIG. 11 is a perspective view of the wall block at the time of construction.

FIG. 12 is a sectional view of a structure showing a third embodiment of the present invention.

FIG. 13 is a perspective view of the same partition wall.

FIG. 14 is a cross-sectional view of a conventional wall block.

[Explanation of symbols]

1 concrete structure 2 Wall block (outer wall surface) 3 Top plate member 4,50 First wall panel 5,51 Second wall panel 6 support legs 7 Bottom plate 8 side version 9,39,60 coupling members 10,62 Filling section 16 Communication 20 Filled concrete 23,24 Main rebar 25 stirrup rebar 30,35 First formwork 31,36 Second formwork 32 formwork 55 partition wall

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[Procedure amendment]

[Submission date] October 4, 2001 (2001.10.
4)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Wall block and method of molding the same

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall block forming left and right outer wall surfaces of a prefabricated concrete structure such as a box culvert and a method for manufacturing the same.

[0002]

Conventionally, as a substantially box-shaped concrete structure, for example, Japanese Patent Publication No. 49-13533.
In the gazette, an upper and lower blocks are tightened and joined by tightening steel rods inserted in vertical holes, and an assembly box culvert is proposed in which a plurality of these blocks are tightened and integrated by a tightening steel rod for connection in a longitudinal direction. Japanese Examined Japanese Patent Publication No. 62-54937
In the gazette, a top plate and a bottom plate are formed of a number of upper and lower half members made of prestressed concrete that are tensioned with PC steel in the width direction, and these upper and lower half members are drilled inside the lower side plate and the upper side plate. Between the formed recesses, PC steel members are connected to each other, and a passage for inserting a pull rod for applying tension to the PC steel members is formed in the side wall of the upper half member, and a plurality of upper and lower half members are arranged in the longitudinal direction. A block for an underdrain has been proposed which is clamped and fixed by a vertical tightening PC steel material.

However, in the above-mentioned assembled box culvert, the box culvert is divided into upper and lower halves, and tightening steel rods are inserted into the vertical holes of the upper and lower blocks to integrate the tension. If the position of does not match, the tightening steel rod cannot be inserted, and it takes time to assemble the upper and lower blocks, and also in the above-mentioned underdrain block,
There is a problem in that the work of inserting the PC steel material and the straining work take time. Furthermore, since the total weight does not change even if the device is divided into two parts, the hanging work during transportation and installation becomes complicated.
Further, in the case of using the U-shaped upper and lower blocks, it is difficult to perform size adjustment in accordance with the site dimensions.

Therefore, the applicant of the present application has filed Japanese Patent Application Laid-Open No. 11-247273.
In the gazette, an assembly box culvert is proposed, which includes a pair of left and right wall walls made of precast concrete and a top plate member made of precast concrete that connects the upper portions of these wall blocks. The wall block includes an inner wall panel and an outer wall panel formed higher than the inner wall panel, and substantially central portions of the inner wall panel and the outer wall panel are connected by a connecting wall portion to be integrally formed in an H-shaped cross section. A filling part with an open upper part is formed between them.This allows concrete to be placed in the filling part during construction to fix the top plate member to the wall block, and the concrete between the lower parts of the left and right wall blocks. An approximately box-shaped prefabricated concrete structure is formed by casting and forming bottom slab concrete.

According to this prefabricated concrete structure,
After arranging the left and right wall blocks and arranging the top slab member on top of these left and right wall blocks, the concrete structure is formed by filling the filling part of the wall block with concrete to form a prefabricated concrete structure. Each of the components such as the inner wall panel, the outer wall panel and the top plate member that are configured is light in weight, and it is easy to transport and install the prefabricated concrete structure. However, since the wall block is configured by integrally connecting the centers of the inner wall panel and the outer wall panel with the connecting wall portion and having an H-shaped cross section, the shape of the wall block is complicated. Therefore, if the wall block is integrally formed with a single mold, the structure of the mold is complicated. In particular,
When using a concrete structure as a box culvert for an excavation tunnel, for example, it is extremely important to increase the seismic resistance, and the wall block that supports the top plate member has a seismic resistant structure that can withstand the force of an earthquake. It is necessary to insert a reinforcing bar.

Conventionally, an inner wall panel a1 as shown in FIG.
When the outer wall panel a2 and the outer wall panel a2 are connected by a connecting wall portion a3 to be used as a box culvert for an excavation tunnel,
Main rebars b1 and b2 are planted in the inner wall panel a1 and the outer wall panel a2 along the length direction of the wall block a. However, even if the main rebars b1 and b2 are planted in the inner wall panel a1 and the outer wall panel a2 as described above, a sufficient seismic structure that can withstand the force of an earthquake cannot be obtained.

Therefore, an object of the present invention is to provide a wall block that is excellent in earthquake resistance and can simplify the structure of the mold for molding the wall block, and a method for manufacturing the wall block.

[0008]

According to a first aspect of the present invention, there is provided a wall block made of concrete which constitutes a wall surface of a prefabricated concrete structure. The wall blocks are arranged facing each other with a space therebetween. The first wall surface panel and the second wall surface panel are provided, and a coupling member for interlocking and fixing the first wall surface panel and the second wall surface panel is provided between the first wall surface panel and the second wall surface panel.

According to the first aspect of the present invention, the structure is formed by combining the wall block and filling the filling portion formed between the first wall panel and the second wall panel with the filling concrete. By constructing the structure by combining the wall blocks in this way, the structural members of the structure are lightweight and easy to transport and install.

A wall block according to a second aspect of the present invention is the wall block according to the first aspect, in which main rebars are planted in the first and second wall panels, and the main wall of the first and second wall panels is provided. A stirrup rebar surrounding the rebar is provided.

According to the structure of claim 2, when the filling portion is filled with concrete, the stirrup rebar between the first wall surface panel and the second wall surface panel is planted, and the first wall surface panel and the second wall surface panel The strength of the wall block is improved by the stirrup reinforcing bar in the main reinforcing bar and the filled concrete that are planted inside, and the wall structure has excellent earthquake resistance.

A wall surface block according to a third aspect of the present invention is the wall surface block according to the first or second aspect, in which the first wall surface panel and the second wall surface panel are connected and fixed by a plurality of connecting members, and the connecting members are used to form the wall surface block. First wall panel and second
A concrete filling portion is formed between the wall surface panels, and a communication portion that connects the filling portions of adjacent wall surface blocks to each other is formed between the connecting members.

According to the third aspect of the present invention, the filling portions of the adjacent wall surface blocks are not partitioned by the connecting member that connects the first wall surface panel and the second wall surface panel, but are adjacent to each other by the communication portion between the connecting members. Even if the filling portions formed in any wall surface blocks are filled with concrete, the portions are communicated with each other, and the filling portions of the adjacent wall surface blocks are filled from the filling portions through the communication portions.

A wall block according to a fourth aspect of the present invention is the wall block according to any one of the first to third aspects,
The first wall surface panel is formed in an L shape having a bottom plate and a side plate, and the second wall surface panel is formed in a flat plate shape facing the side plate. The first and second wall panels support the bottom slab of one wall panel and are arranged inside the side slab to form the left and right outer wall surfaces of the prefabricated concrete structure.

According to the structure of claim 4, the outer wall surface constituted by the first wall surface panel and the second wall surface panel is arranged on the left and right, and the top plate member is arranged on the upper part of the second wall surface panel. The filling part formed between the second wall panels is filled with filling concrete to form a box-shaped structure. By thus constructing the structure by combining the first wall surface panel, the second wall surface panel and the top plate member, the structural members of the structure are lightweight and easy to transport and install.

A wall block according to a fifth aspect of the present invention is the wall block according to any one of the first to third aspects,
The first wall surface panel and the second wall surface panel are formed symmetrically, each having an outwardly projecting protruding portion at a lower portion,
The first wall surface panel and the second wall surface panel are opposed to each other to form a partition wall for partitioning the space portion of the prefabricated concrete structure into left and right.

According to the structure of claim 5, a box-shaped structure is constructed by combining the left and right outer wall surfaces and the top plate member, and the partition wall is arranged in the center of the structure.
The space of the structure is divided into left and right by the partition wall.
By thus constructing the structure by combining the left and right side walls, the top plate member and the partition wall, the structural members of the structure are lightweight and easy to transport and install.

According to a sixth aspect of the present invention, there is provided a wall block manufacturing method, wherein a mold for molding the wall block according to any one of the first to fifth aspects is provided, and the mold is filled with concrete. A method of manufacturing a wall block for molding the wall block, comprising a first mold for molding the first wall panel and a second mold for molding a second wall panel,
A mold part for molding the joining member is formed on one of the first and second molds, and the wall surface block is molded in two parts by the first and second molds, and at the first time. Of the first or second wall surface panel and the connecting member are integrally formed during the molding step of the first wall panel, and the first wall surface panel is integrated with the other wall panel and the connecting portion during the second molding step. And the second wall panel are integrated.

According to the method of manufacturing the wall surface block of the sixth aspect, when the wall surface block is molded, the first wall surface panel and the second wall surface panel are molded twice so that the first wall surface panel is molded.
The structure of each mold for molding the wall panel and the second wall panel can be simplified, the dimensions of the first wall panel and the second wall panel can be easily changed, and the cost for modifying the mold can be reduced. . In addition, by separately molding the first wall surface panel and the second wall surface panel twice, it is easy to assemble and dismantle each form forming the first wall surface panel and the second wall surface panel. The molding work of the panel and the second wall panel is also easy. Furthermore, when molding the wall block, the first
Main rebars are planted inside the wall panel and the second wall panel, and stirrup rebars are planted in the concrete with which the filling portion is filled so as to surround the main rebars. Also,
The shear strength of the wall block is improved by arranging the stirrup rebar. Further, since the reinforcing bars can be reinforced during the forming of the wall block, the reinforcing work in the field work can be omitted.

According to the method of manufacturing a wall block of claim 7, a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete. A method of manufacturing a wall block for molding a wall block, comprising a first mold for molding the first wall panel and a second mold for molding a second wall panel. The first and second wall surface panels are individually molded with the above mold, and a connecting member is formed separately from the first and second wall surface panels. Are connected.

According to the structure of claim 7, at the time of construction, the first wall surface panel and the second wall surface panel are divided and individually molded, so that the first wall surface panel is installed along the first wall surface panel laid first. Place rebars along the length of the wall panels. After that, by fixing the second wall panel to the first wall panel by the connecting member, a wide space for arranging the reinforcing bars to be inserted between the first wall panel and the second wall panel at the end of the wall block. Since it is not necessary to secure the above, it is possible to freely set the laying position of the wall block without being restricted by the reinforcing bar.

[0022]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 to 7,
The concrete structure 1 includes left and right wall blocks 2 and 2 made of precast concrete, which are outer wall surfaces of the concrete structure 1, and a top plate member 3 made of precast concrete that connects the upper parts of the wall blocks 2 and 2. .

The wall surface block 2 comprises a first wall surface panel 4 serving as an outer wall thereof and a second wall surface panel 5 serving as an inner wall, and the first wall surface panel 4 has an L-shaped section having a bottom plate 7 and a side plate 8. On the other hand, the second wall panel 5 is formed in a vertically long rectangular shape lower than the side plate 8 so as to face the side plate 8, and the support leg 6 is integrally formed at the lower end center thereof. Further, between the first wall surface panel 4 and the second wall surface panel 5, two connecting members 9, 9 for holding the space between the panels 4 and 5 are provided at intervals vertically. The connecting members 9 and 9 are each formed in a prismatic shape, and the connecting members 9 and 9 form a concrete filling portion 10 having an upper opening between the second wall panel 5 and the first wall panel 4.
Is formed. Further, a communicating portion 16 is formed between the connecting members 9 and 9 and the bottom connecting member 9 on the bottom plate 7, and when the wall surface blocks 2 are connected in the longitudinal direction, each wall surface block 2 is formed. The filling section 10 is communicated by the communication section 16.

As shown in FIG. 3, the top plate member 3 is formed in a T-shaped cross section with a convex wall surface 11 projecting from the center thereof.
When the top plate members 3 are arranged in series, a recess 12 for filling concrete is formed between the adjacent convex wall surfaces 11.

On both sides of the top plate member 3 in the left-right direction, there are provided mounting portions 13 which are formed substantially obliquely downward and are mounted on the upper surface of the second wall surface panel 5. Continuous curved portions 14 and 15 are formed on the inner surface of the upper end and the inner surface of the mounting portion 13 of the top plate member 3, respectively.

Reference numeral 20 designates a first wall panel 4 and a second wall panel 5.
Is a filled concrete which is continuously cast into a recess 12 formed between the filling portion 10 formed between the filling plate 10 and the convex wall surface 11 of the top plate member 3, and in this example, the filling concrete In the inside of 20, the filling part 10 and the top of the top plate member 3 are extended to approximately L
The rebar 21 of the mold is buried. Further, in the figure, 22 is bottom slab concrete formed by cast-in-place concrete, 23 and 24 are main reinforcing bars to be planted on the first wall panel 4 and the second wall panel 5, and 25 is a star surrounding these main reinforcing bars 23 and 24. Wrap rebar.

Next, a method of manufacturing the wall surface block 2 will be described with reference to FIGS. The wall block 2 is molded by pouring concrete into the mold, but in this embodiment, the first wall panel 4 is molded with the first mold 30,
The second wall surface panel 5 and the connecting member 9 are molded by the second mold 31, that is, the second frame 31 is integrally formed with a mold part 32 for molding the connecting member 9. Then, first, the second wall surface panel 5 and the connecting member 9 are simultaneously molded by the second frame 31 and the frame portion 32. As shown in FIG. 4B, inside the second formwork 31 for molding the second wall surface panel 5, the main rebar 23 and the slurlap rebar 25 are arranged in the second formwork 31. Pour concrete into the. This makes the main rebar
The second wall surface panel 5 in which 23 and one end of the stirrup reinforcing bar 25 are planted is molded. Thereafter, as shown in FIG. 6 (a), the second wall surface panel 5 is turned over, and the respective end portions of the connecting members 9 and 9, the stirrup rebar 25 and the support leg 6 are placed in the first formwork 30. The first wall surface panel 4 is molded by filling with concrete in the inserted state. By thus forming the wall surface block 2 in two steps, as shown in FIG. 7, the first wall surface panel 4 and the second wall surface panel 5 are integrally formed by the coupling members 9 and 9 and the support legs 6. Connected to. As shown in FIG. 6 (b), both ends of the main rebars 23, 24 and the stirrup rebar 25 are planted in the first wall panel 4 and the second wall panel 5 thus formed. A part of 25 is arranged in the filling portion 10 formed between the first wall surface panel 4 and the second wall surface panel 5. Further, as shown in FIG. 7, the connecting members 9 that connect the first wall surface panel 4 and the second wall surface panel 5 are formed with a vertical interval, and the lower connecting member 9 and the bottom plate 7 are separated from each other. Since they are formed, the communication portion 16 is formed between the connecting members 9 and 9 and between the bottom plate 7 and the lower connecting member 9. The main wall reinforcements 23 and 24 are planted in the first wall panel 4 and the second wall panel 5, respectively, and the stirrup reinforcement 25 is arranged so as to surround the main reinforcements 23 and 24, which is excellent in earthquake resistance. The wall block 2 is formed.

Next, a method of constructing the concrete structure 1 will be described. First, at the construction site, the parts on which the bottom slab 7 is placed are leveled or finished by abandoned concrete or the like, and the bottom slab 7 is placed, and the wall blocks 2 and 2 that become the outer wall surfaces of the concrete structure 1 are erected on both left and right sides. Set up.
In this case, since the wall block 2 has the bottom plate 7, it is self-supporting and excellent in stability. Next, the top plate member 3
Is hung up, the mounting portions 13, 13 are placed on the second wall surface panels 5, 5 of the left and right wall surface blocks 2, 2 and fixed by anchor bolts (not shown) or the like. After assembling the wall surface block 2 and the top plate member 3 in this way, the plurality of wall surface blocks 2 and the top plate member 3 are arranged in the longitudinal direction to form the wall surface block 2 and the first wall surface panel 4 and the first wall surface panel 4. 2 Filling part 10 that opens at the top between the wall surface panel 5
Is formed, and the filling part is continuous with the filling part 10.
A recess 12 is formed between the projecting wall surfaces 11 of 10. Further, in the filling portion 10, a force distribution muscle 61 that is installed between the first wall surface panel 4 and the second wall surface panel 5 is arranged. Then, after arranging the L-shaped reinforcing bar 21 in the filling portion 10 and the recess 12, the filling concrete 20 is poured by placing concrete in the filling portion 10 of the wall surface block 2 and the recess 12 of the top plate member 3. The stirrup reinforcing bar 25 and the distributing bar 61 reinforcing bar 21 are planted therein, and the adjacent wall block 2 and top plate member 3 are integrated with each other.

Further, the filling portion 10 of the adjacent wall block 2
Is not partitioned by the connecting member 9 that connects the first wall surface panel 4 and the second wall surface panel 5, but is formed by the upper and lower connecting members 9 and the communicating portion 16 formed between the connecting member 9 and the bottom plate 7. Adjacent filling parts 10 communicate with each other. As a result, even if the filling portion 10 formed on an arbitrary wall surface block 2 is filled with concrete, the concrete flows from the communicating portion 16 of the connecting member 9 forming the filling portion 10 to the filling portion 10 of the adjacent wall surface block 2. Is filled. Further, by placing concrete between the lower portions of the wall surface blocks 2 and 2 to form the bottom slab concrete 22, the box-shaped structure 1 is formed. When this structure 1 is used as embankment or a box culvert buried in the ground, pavement (not shown) is applied on the bottom slab concrete 22, and when it is used for a small bridge, etc., on the filled concrete 20. Pavement (not shown) is applied.

The prefabricated concrete structure 1 constructed as described above is for assembling the wall block 2 and the top plate member 3 on site, which is advantageous for manufacturing products suitable for the site. In addition, in this embodiment, when the wall surface block 2 is formed, the first wall surface panel 4 and the second wall surface panel 5 are formed by dividing the first wall surface panel 4 and the second wall surface panel 5 into two parts.
The structure of the molds 30 and 31 for molding the wall panel 5 can be simplified, the dimensions of the first wall panel 4 and the second wall panel 5 can be easily changed, and the cost of modifying the mold can be reduced. .. Further, the assembling and disassembling of the respective molds 30 and 31 for molding the first wall surface panel 4 and the second wall surface panel 5 are easy, and the molding work of the first wall surface panel 4 and the second wall surface panel 5 is also easy. Further, when the wall block 2 is formed, main reinforcing bars 23, 24 are planted inside the first wall panel 4 and the second wall panel 5, and a stirrup reinforcing bar 25 is provided so as to surround the main reinforcing bars 23, 24. Can be easily arranged. In this way, in the wall surface block 2, main reinforcing bars 23, 24 planted in the first wall surface panel 4 and the second wall surface panel 5, and the main reinforcing bars 23, 24
The stirrup rebar 25 that surrounds the
The strength of the wall block 2 is increased by 23, 24 and 25, and excellent earthquake resistance can be obtained. Further, since the reinforcing bars 23, 24, 25 can be laid out when the wall block 2 is formed, the laying work in the field work can be omitted, the workability is excellent, and the construction period can be shortened.

FIGS. 8 to 11 show a second embodiment of the present invention. Parts having the same functions as those of the first embodiment are designated by the same reference numerals, and only different parts will be described.

In the above-described embodiment, the wall block 2 is molded in two steps, but in this embodiment, the first wall panel 4 and the second wall panel 5 constituting the wall block 2 are formed.
Are individually formed with the first and second molds 35 and 36, respectively,
The first wall surface panel 4 and the second wall surface panel 5 which are molded independently of each other in this way are connected by a coupling member 39. The connecting member 39 is made of steel, for example, and the first wall surface panel 4 and the second wall surface panel 5 are manufactured separately. On the other hand, the first wall surface panel 4 and the second wall surface panel 5 are embedded with a mounting member 38 for mounting the coupling member 39 at the time of molding. That is, the mounting bracket 38 is incorporated in the first and second molds 35, 36 for molding the second wall panel 5 and the first wall panel 4, and by filling the concrete of the respective molds 35, 36 with each other. Mounting brackets on the first wall panel 4 and the second wall panel 5
38 is buried. In this way, the first wall surface panel 4 and the second wall surface panel 5 are independently molded by the respective molds 35 and 36, and then the mounting metal fittings are planted in the first wall surface panel 4 and the second wall surface panel 5. 38, 38 and connecting members 39, 39
First wall panel 4 by connecting and fixing each
The second wall panel 5 and the second wall panel 5 are connected by the connecting member 39.
When molding the first wall surface panel 4 and the second wall surface panel 5 with the respective molds 35, 36, the main wall reinforcements 23, 24 are arranged in the respective molds 35, 36 so that the first wall surface panel 4 is formed. Main reinforcing bars 23 and 24 are buried in the second wall panel 5 and the second wall panel 5, respectively.

In the present embodiment configured as described above, L
Type first wall panel 4 and substantially flat second wall panel 5
Since and are independently molded by the first and second molds 35 and 36, respectively, the shapes of the first and second molds 35 and 36 can be simplified as in the first embodiment. Yes, first
It becomes easy to change the dimensions of the wall panel 4 and the second wall panel 5, and the cost of modifying the mold can be reduced. Further, the assembling and disassembling work of each form 35, 36 is also easy. Also,
By completely separating the first wall surface panel 4 and the second wall surface panel 5 from each other, during construction, the first wall surface panel 4 of the wall surface block 2 is first laid and then the second wall surface panel 5 is joined. The member 39 makes it possible to retrofit the first wall panel 4. As a result, the installation position of the wall surface block 2 can be freely selected without any positional restriction. That is, as in the case of the first embodiment, the wall surface blocks 2 in which the first wall surface panel 4 and the second wall surface panel 5 are integrated are laid side by side in the longitudinal direction, and in order to firmly integrate them, When a plurality of horizontal reinforcing bars 40 are inserted between the first wall surface panel 4 and the second wall surface panel 5, one end of the wall surface block 2 has a structure in which the first wall surface panel 4 and the second wall surface panel 5 are integrated. Since it is necessary to pass the reinforcing bar between the first wall panel 4 and the second wall panel 5, the insertion side of the horizontal reinforcing bar 40 has a large space for arranging the horizontal reinforcing bar 40 by the length of the reinforcing bar. Must be secured. For this reason, there are restrictions on the starting position of the wall block 2 such that the wall block 2 is laid starting from the center or left or right, or the wall block 2 is laid sequentially from one side. Further, in order to set the total length of the assembled concrete structure 1 in which the wall blocks 2 are arranged side by side according to the length of the horizontal reinforcing bar 40 to be inserted, or to construct the assembled concrete structure 1 longer than the length of the horizontal reinforcing bar 40. Since it is necessary to add the horizontal reinforcing bars 40 in the narrow assembled concrete structure 1, the workability is extremely poor. However, as in the present embodiment, the first wall surface panel 4 and the second wall surface panel 5 are divided and molded, so that the first wall surface panel 4 is installed as shown in FIG. After arranging the horizontal reinforcing bars 40 along the fourth wall 4, the second wall panel 5 is fixed to the first wall panel 4 by the connecting member 39, so that the horizontal wall between the first wall panel 4 and the second wall panel 5 is fixed. The rebar 40 can be easily arranged. Thereby, the laying position of the wall surface block 2 can be freely determined.

FIGS. 12 and 13 show a third embodiment of the present invention. The parts having the same functions as those of the respective embodiments are designated by the same reference numerals, and only different parts will be described.

In each of the above-mentioned embodiments, the first wall surface panel 4 and the second wall surface panel 5 form the left and right wall surface blocks 2 and 2 which are the outer wall surfaces of the concrete structure 1, and the first wall surface panel 4 and the second wall surface block 2 are formed. Although an example in which the box-shaped concrete structure 1 is configured by the wall blocks 2 and 2 formed by the wall panel 5 and the top plate member 3 is shown, in this embodiment, the left and right wall blocks 2 and 2 and the top plate are thus formed. The first wall surface panel 50 and the second wall surface panel 51 are provided with a partition wall 55 which is erected in the central portion of the concrete structure 1 constituted by the members 3 and divides the interior of the concrete structure 1 into left and right space portions 1A and 1B. It is composed by. That is, as shown in FIG. 12, the first wall surface panel 50 and the second wall surface panel 51 forming the partition wall 55 are formed in the same shape and are arranged symmetrically in the left-right direction. The first wall surface panel 50 and the second wall surface panel 51 are formed in a vertically long rectangular shape, and a pair of left and right support legs 56 and 57 are integrally formed at the center of the lower ends thereof, and the lower ends of the respective support legs 56 and 57 are outwardly formed. Overhang protruding to 58,59
Is formed. In addition, these first wall panel 50 and the second
Two coupling members 60, 60 for holding the space between the respective panels 50, 51 are provided between the wall panel 51 and the wall panel 51 with a space vertically provided therebetween.

The first wall panel 50 and the second wall panel
As described in the first embodiment, the partition wall 55 formed by 51 is formed by the first and second formwork (not shown) and is the main rebar which is planted in each wall panel 50, 51. (Not shown) is arranged in a filling portion 62 formed between the first wall surface panel 50 and the second wall surface panel 51 while being surrounded by the stirrup rebar 25.

In the present embodiment constructed as described above, the assembled concrete structure 1 is constructed by assembling the wall block 2, the top plate member 3 and the partition wall 55 on site, and at the construction site, the bottom slab 7 is used. Flatten the part to place
Alternatively, the bottom slab 7 is placed by finishing with discarded concrete or the like, the wall blocks 2 and 2 are erected on both right and left sides, and the partition wall 55 is erected between the wall blocks 2 and 2. In this case, the wall block 2 has a bottom plate 7,
Since the partition wall 55 is formed with the overhanging portions 58 and 59, the wall surface block 2 and the partition wall 55 are self-supporting and excellent in stability. Next, the top plate member 3 is lifted, and the mounting portions 13 and 13 thereof are attached to the second wall surface panels 4 and 4 of the left and right wall surface blocks 2 and 2 and the first wall surface panel 50 and the second wall surface panel 51 of the partition wall 55. It is installed between the two and fixed with anchor bolts (not shown). After the wall block 2 and the partition wall 55 and the top plate member 3 are assembled in this way, the wall block 2 is separated by arranging the wall block 2 and the partition wall 55 and the top plate member 3 in the longitudinal direction. A filling portion 10 having an upper opening is formed between the first and second wall surface panels 4 and 5, and an upper portion is opened between the first and second wall surface panels 50 and 51 forming the partition wall 55. The filling portion 62 is formed,
The filling portions 10 and 62 and the recess 12 formed between the projecting wall surface 11 are continuous. Further, the stirrup reinforcing bar 25 and the force distributing bar 61 are arranged in each of the filling sections 10 and 62. Then, after arranging the L-shaped reinforcing bar 21 in the filling portion 10 and the recess 12, the filling concrete 20 is poured by placing concrete in the filling portion 10 of the wall surface block 2 and the recess 12 of the top plate member 3. The stirrup reinforcing bar 25, the force distributing bar 61 and the reinforcing bar 21 are planted therein, and the adjacent wall block 2, partition wall 55 and top plate member 3 are integrated with each other.

The filling portion 1 of the adjacent wall block 2
0 and 62 are not partitioned by the connecting member 9 that connects the first wall surface panel 4 and the second wall surface panel 5 and the connecting member 60 that connects the first wall surface panel 50 and the second wall surface panel 51,
The adjacent wall block 2 and the filling portions 10 and 62 of the partition wall 55 communicate with each other. As a result, even if the filling portions 10 and 62 of the arbitrary wall block 2 and the partition wall 55 are filled with concrete, the filling portions 10 and 6 of the adjacent wall block 2 extend from the filling portions 10 and 62.
2 is filled with concrete. In addition, by placing concrete between the wall blocks 2 and 2 and the lower part of the partition wall 55 to form the bottom slab concrete 22, the box-shaped structure 1 is formed, and the inside of this structure 1 is partitioned. Wall 55
It is divided into the left and right spaces 1A and 1B. When this structure 1 is used as embankment or a box culvert buried in the ground, pavement (not shown) is applied on the bottom slab concrete 22, and when it is used for a small bridge, etc., on the filled concrete 20. Pavement (not shown) is applied.

In the present embodiment configured as described above, when the partition wall 55 of the structure 1 is molded, the first wall panel 50 and the second wall panel 51 are molded twice so that
The structure of the mold for molding the first wall panel 50 and the second wall panel 51 can be simplified, the dimensions of the first wall panel 50 and the second wall panel 51 can be easily changed, and the mold remodeling cost can be reduced. Can be reduced. In addition, it is easy to assemble and dismantle each mold for molding the first wall surface panel 50 and the second wall surface panel 51, and the molding work of the first wall surface panel 50 and the second wall surface panel 51 is also easy. Further, when the partition wall 55 is formed, the main reinforcing bars are planted inside the first wall panel 50 and the second wall panel 51, and the stirrup reinforcing bars 25 can be easily arranged so as to surround the main reinforcing bars. it can. In this way, the partition wall 55 is arranged with the main reinforcing bars planted in the first wall panel 50 and the second wall panel 51 and the stirrup reinforcing bars 25, so that the strength of the partition wall 55 is enhanced and excellent seismic resistance is achieved. You can get sex. Furthermore, since the reinforcing bars can be laid out when the wall block 2 is formed, the laying work on site can be omitted, the workability is excellent, and the construction period can be shortened.

In the present embodiment, as in the first embodiment, the case where the molding is performed twice is explained as an example.
As shown in the second embodiment, the first wall panel 50 and the second wall panel 50
The wall panel 51 may be formed independently of each other.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the respective embodiments.
For example, the reinforcing bar structure that integrates the wall block is not limited to the above embodiment, and may be set as appropriate. Further, although the second embodiment has shown the example in which the steel connecting member that connects the outer wall panel and the inner wall panel is used, the material and shape of the connecting member may be appropriately selected.

[0042]

According to the wall surface block of the first aspect of the present invention, the wall surface block is made of concrete which constitutes the wall surface of the prefabricated concrete structure, and the wall surface blocks are arranged facing each other with a space therebetween. First wall panel and second
Since the wall panel is provided, and the connecting member for interlocking and fixing the first and second wall panels is provided between the first and second wall panels, the weight of the structural member is reduced. , Easy to transport and install.

According to the wall surface block of claim 2 of the present invention, in the wall surface block according to claim 1, main rebars are planted in the first and second wall surface panels, and the first and second wall surface panels are provided. Since the stirrup rebar surrounding the main rebar is provided, the main rebar is planted in the first and second wall panels, and the stirrup is applied to the concrete filled in the filling portion between the inner wall panel and the outer wall panel. Reinforcing bars will be planted to improve the strength of the wall block and enhance seismic resistance.

According to the wall surface block of claim 3 of the present invention, in the wall surface block of claim 1 or 2, the first wall surface panel and the second wall surface panel are connected and fixed by a plurality of connecting members, and these connecting members are connected. According to the present invention, a concrete filling portion is formed between the first wall surface panel and the second wall surface panel, and a communication portion that connects the filling portions of adjacent wall surface blocks to each other is formed between the connecting members. From the above, the filling portions of the adjacent wall blocks are not partitioned by the joining member, the adjacent filling portions communicate with each other by the communicating portion formed between the joining members, and concrete is filled in the filling portion formed on any wall block. Even if it is filled, it can be filled from the filling portion to the filling portion of the adjacent wall block through the communication portion.

According to the wall surface block of claim 4 of the present invention, in the wall surface block according to any one of claims 1 to 3, the first wall surface panel has a bottom plate and a side plate.
The second wall panel is formed in a mold, and the second wall panel is formed in a flat plate shape facing the side plate, and the second wall panel is supported by the bottom plate of the first wall panel and disposed inside the side plate. Since the left and right outer wall surfaces of the prefabricated concrete structure are formed by the first and second wall surface panels, the structural members of the structure are lightened and the transportation and installation are easy.

According to the wall surface block of the fifth aspect of the present invention, in the wall surface block according to any one of the first to third aspects, the first wall surface panel and the second wall surface panel are respectively outwardly provided in the lower part. A partition wall is formed which has a projecting overhang portion and is formed symmetrically, and the first wall surface panel and the second wall surface panel are opposed to each other to partition the space portion of the prefabricated concrete structure into left and right parts. The partition wall divides the space of the structure into left and right. Also,
By constructing the structure by combining the left and right side walls, which are outer wall surfaces, and the top plate member and the partition wall, the structural members of the structure are lightweight and easy to transport and install.

According to the wall surface block manufacturing method of claim 6 of the present invention, a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete. A method of manufacturing a wall surface block for forming the wall surface block by providing a first formwork for forming the first wall surface panel and a second formwork for forming a second wall surface panel. And a mold part for molding the joining member is formed on one of the second mold, and the wall surface block is molded in two parts by the first and second molds, and the first molding step is performed. Sometimes, one of the first wall panel and the second wall panel is integrally formed with a coupling member,
Since the first wall surface panel and the second wall surface panel are integrally formed by integrating the other wall surface panel and the connecting portion during the second molding step, each of the first wall surface panel and the second wall surface panel is molded. The structure of the mold can be simplified, the dimensions of the first wall panel and the second wall panel can be easily changed, and the cost for modifying the mold can be reduced. In addition, it is easy to assemble and dismantle each of the molds for molding the first wall surface panel and the second wall surface panel, and it is easy to mold the first wall surface panel and the second wall surface panel. Further, in the concrete in which the main reinforcing bars are planted inside the first wall panel and the second wall panel when the wall block or partition wall is formed, and the stirrup reinforcing bars are filled in the filling portion so as to surround the main reinforcing bars. It will be planted to increase the strength of the wall block or partition wall. Further, since the reinforcing bar can be reinforced when the wall block or the partition wall is formed, the reinforced work in the field work can be omitted.

According to the method for manufacturing a wall block of claim 7, a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete to form the wall block. A method of manufacturing a wall block for molding a wall block, comprising a first mold for molding the first wall panel and a second mold for molding a second wall panel. The first and second wall surface panels are individually molded with the above mold, and a connecting member is formed separately from the first and second wall surface panels, and the connecting member forms the first wall surface panel and the second wall surface panel. Therefore, the starting position for laying the wall block or partition wall can be freely set without being restricted by the reinforcing bars arranged between the first wall panel and the second wall panel.

[Brief description of drawings]

FIG. 1 is a perspective view of a side wall panel showing a first embodiment of the present invention.

FIG. 2 is a sectional view of the assembling concrete structure.

3 is a sectional view taken along line AA of FIG.

4 shows the same method of forming the inner wall panel, FIG.
FIG. 4A is a cross-sectional view of the inner wall panel viewed from the front, FIG.
(B) is sectional drawing of the inner wall panel seen from the side surface direction.

FIG. 5 is a perspective view of the inner wall panel of the same.

6 shows the same as above, showing a method for forming an outer wall panel, FIG.
6A is a cross-sectional view of the outer wall panel viewed from the front direction, FIG.
(B) is sectional drawing of the outer wall panel seen from the side surface direction.

FIG. 7 is a perspective view of the wall block after the molding.

FIG. 8 shows a method for forming a second wall surface panel according to the second embodiment of the present invention, FIG. 8 (a) is a sectional view of the second wall surface panel seen from the front direction, and FIG. 8 (b) is a side view. Second seen
It is sectional drawing of a wall surface panel.

FIG. 9 shows the same method of forming the first wall panel, FIG.
FIG. 9A is a sectional view of the first wall panel viewed from the front side, and FIG. 9B is a sectional view of the first wall panel viewed from the side.

FIG. 10 is an exploded perspective view showing a construction procedure at the time of construction.

FIG. 11 is a perspective view of the wall block at the time of construction.

FIG. 12 is a sectional view of a structure showing a third embodiment of the present invention.

FIG. 13 is a perspective view of the same partition wall.

FIG. 14 is a cross-sectional view of a conventional wall block.

[Explanation of symbols] 1 concrete structure 2 Wall block (outer wall surface) 3 Top plate member 4,50 First wall panel 5,51 Second wall panel 6 support legs 7 Bottom plate 8 side version 9,39,60 coupling members 10,62 Filling section 16 Communication 20 Filled concrete 23,24 Main rebar 25 stirrup rebar 30,35 First formwork 31,36 Second formwork 32 formwork 55 partition wall

Continued front page    (72) Inventor Yasushi Isaka             1-8-23 Bentenbashi Dori, Niigata City, Niigata Prefecture             Inside this SUMICON CORPORATION F-term (reference) 2D063 BA06 BA24 BA31 BA34                 4G058 GA01 GB02 GD08 GF02 GF05

Claims (7)

[Claims] 1. A concrete wall block that constitutes a wall surface of a prefabricated concrete structure, the wall block including a first wall panel and a second wall panel that are opposed to each other with a space therebetween. A wall block comprising a connecting member interposed between the first and second wall panels to connect and fix the first and second wall panels. 2. The main reinforcing bars are planted in the first and second wall panels and stirrup reinforcing bars surrounding the main reinforcing bars of the first and second wall panels are provided. Wall block. 3. The first wall surface panel and the second wall surface panel are connected and fixed by a plurality of connecting members, and the connecting members form a concrete filling portion between the first wall surface panel and the second wall surface panel. , Between the coupling members,
The wall surface block according to claim 1 or 2, wherein a communication portion is formed that connects the filling portions of the adjacent wall surface blocks to each other. 4. The first wall surface panel is formed in an L shape having a bottom plate and a side plate, and the second wall surface panel is formed in a flat plate shape facing the side plate. The left and right outer wall surfaces of the prefabricated concrete structure are formed by supporting the wall panel by the bottom slab of the first wall panel and arranging the wall panel inside the side slab. The wall block according to any one of Items 1 to 3. 5. The first wall surface panel and the second wall surface panel are formed symmetrically, each having a projecting portion projecting to the outside at the bottom, and these first wall surface panel and the second wall surface panel are formed. The wall block according to any one of claims 1 to 3, wherein partition walls are formed so as to face each other so as to partition the space portion of the prefabricated concrete structure into right and left. 6. A method of manufacturing a wall block, wherein a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete to mold the wall block. There is provided a first mold for molding the first wall panel and a second mold for molding the second wall panel, and the coupling member is molded on one of the first and second molds. Forming a frame portion, and by using the first and second molds to mold the wall surface block in two steps, at the time of the first molding step, either one of the first or second wall surface panel is formed. The wall panel and the connecting member are integrally formed,
A method of manufacturing a wall surface block, characterized in that the first wall surface panel and the second wall surface panel are integrated by integrating the other wall surface panel and the connecting portion at the second molding step. 7. A method of manufacturing a wall block, wherein a mold for molding the wall block according to any one of claims 1 to 5 is provided, and the mold is filled with concrete to mold the wall block. There is provided a first mold for molding the first wall surface panel and a second mold for molding the second wall surface panel, and the first and second wall surfaces are formed by the first and second molds. Each panel is molded individually and this first
And a method for manufacturing a wall block, wherein a connecting member is formed separately from the second wall panel, and the first wall panel and the second wall panel are connected by this connecting member.