JP2017133238A - Construction of concrete wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform work of arranging a precast concrete panel at the next stage on a precast concrete panel with a space for concrete packing installed, for construction of a concrete wall.SOLUTION: Panel bodies 1 are stacked. In the panel body, a precast concrete panel 2 arranged on a front face of a concrete wall and a precast concrete panel 2 arranged on a rear face are arranged in parallel, and a supporting tool 3 and a receiving tool 4 are extended and attached between the precast concrete panels, and the precast concrete panels on both sides are connected, and the width is the same as that of the concrete wall. In the supporting tool, a supporting pole 11 is provided to project at the upper part of the precast concrete panel, and the receiving tool is provided with a receiving part 12 that abuts on the tip of the supporting pole of the panel body at the lower stage. As the receiving tool is placed on the supporting tool, the panel body is supported while being floated. A projecting length of the supporting pole and a vertical position of the receiving part are decided so that a space between the precast concrete panels of the panel bodies at the upper and lower stages can be a concrete packing space 13.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a technique for constructing a concrete wall.

  In the case of constructing a concrete wall, a construction method using a permanent mold is known in order to increase the construction efficiency at the construction site. In this method, a concrete panel to be made into a permanent form is manufactured at a factory. At the construction site, permanent form precast concrete panels are placed facing each other. Ready-mixed concrete is poured into the space between the precast concrete panels facing each other. When this concrete is hardened, the in-place concrete and the precast concrete panels on both sides of the concrete are in close contact with each other. A concrete wall is constructed by integrating precast concrete panels on both sides and in-situ concrete.

The concrete wall uses a plurality of precast concrete panels on the front side and the back side. A precast concrete panel is made into a square shape, and a plurality of sheets are aligned in the left-right direction. Moreover, it arranges | matches up and down.
In nuclear facilities where harmful radiation shielding is required, steel concrete walls may be used. A steel plate concrete wall uses a permanent form as a steel plate. A steel plate is made into a square shape, and a plurality of sheets are butted in the left-right direction on the front surface side and the back surface side of the wall and welded.

JP 2012-107381 A

[Task]
In the concrete wall as described above, the left and right side surfaces of the precast concrete panels adjacent to the left and right sides are not joined to each other on the front side and the back side. They are only touching. The precast concrete panels that are adjacent to each other in the upper and lower sides are not joined because the upper and lower side surfaces are in contact with each other. The concrete wall has a smaller thickness and a smaller cross-sectional area at the left and right lateral positions and the upper and lower lateral positions of the precast concrete panel than the other positions. As a result, mechanical strength and radiation shielding power are lowered.

As a solution to this, a method is conceivable in which a gap is provided between precast concrete panels that are adjacent to each other on the left, right, top, and bottom, and concrete is filled in the gap.
When the precast concrete panel is arranged in the left-right direction or the up-down direction, a gap for filling concrete is provided between the left side surface and the right side surface or between the upper side surface and the lower side surface. This gap communicates with the concrete embedding space between the precast concrete panels facing each other. Then, when the ready-mixed concrete is driven into the concrete-filled space, it flows into and fills the gap between the left and right side surfaces of the precast concrete panel and the gap between the upper and lower side surfaces. Packs not only in concrete space but also in gaps. When the concrete is hardened, the cast-in-place concrete is bonded not only to the inner surface of the precast concrete panel but also to the left and right side surfaces and the upper and lower side surfaces. The concrete wall is the part between the left and right sides of the precast concrete panel, the part between the top and bottom sides, and the cast-in-place concrete is thicker than the other parts, and the cross-sectional area of the cast-in-place concrete increases because there is no precast concrete panel . Mechanical strength and radiation shielding power are not lowered.

  In order to implement this solution, it is necessary to arrange the precast concrete panel in the next stage on the precast concrete panel with a gap for filling the concrete. There is a problem of efficiently performing the work of placing the precast concrete panel in the air.

[Idea]
1) Stacking panel bodies When building concrete walls, panel bodies manufactured at the factory are stacked at the construction site.
In the panel body, the precast concrete panel on the front surface side arranged on the surface of the concrete wall and the precast concrete panel on the back surface side arranged on the back surface face each other, and a support member and a receiving tool are installed between them. Connect the precast concrete panels on both sides by attaching the support and the receiver. The panel body has the same width as the concrete wall.

In the panel body, the support member and the receiving member are stacked on the panel body in addition to the joints of the precast concrete panels on both sides.
The support is provided with a support bar protruding above or below the precast concrete panel, that is, in the vertical direction. The receiving device is provided with a receiving portion that hits the upper end or lower end of the support bar of the lower or upper panel body, that is, the tip. The support member and the support member are configured to float and support the panel body by placing the other on one. The protruding length of the support bar and the vertical position of the receiving portion are determined such that when the panel bodies are stacked, the gap between the precast concrete panels of the upper and lower panel bodies has a width suitable for filling concrete. The gap should be a concrete-filled space. The width of the gap is, for example, about 4 to 6 cm.

  At the construction site, the next upper panel body is placed on the lower panel body, and the upper panel body support or support is placed on the lower panel body support or support. The upper panel body is supported by floating on the lower panel body with a supporter and a receiver. Then, the upper panel body is disposed on the lower panel body with a gap having a preset width. In the upper and lower panel bodies, a gap having a preset width and a concrete filling space are formed between the upper and lower precast concrete panels on the front surface side and the back surface side, respectively.

2) Positioning of the panel body in the left-right direction When the panel body is placed on the lower panel body, a left-right positioning mechanism for determining the position in the left-right direction is provided.
The supporting member and the receiving member are provided with a positioning piece for stopping the relative movement in the left-right direction when the other is placed on one.
Positioning pieces are provided at the left and right ends of the support rods of the support tools. The left and right positioning pieces are configured so that the receiving portions of the receiving tool are fitted therebetween. When the receiving part of the receiver is fitted between the left and right positioning pieces, the position in the left-right direction is determined. Or the receiving part of a receiving tool provides a positioning piece in right and left. The left and right positioning pieces are configured such that the tips of the support bars of the support members are fitted between them. When the tip of the support rod of the support is fitted between the left and right positioning pieces, the position in the left-right direction is determined.

  Further, the left and right positioning pieces are opened outward in a reverse C-shape or C-shape. The receiving portion of the receiving member or the support rod tip of the supporting member easily enters between the left and right positioning pieces.

3) Positioning of the panel body in the front-rear direction When the panel body is placed on the lower panel body, a front-rear positioning mechanism that determines the position in the width direction and the front-rear direction is provided.
The support rod of the support tool has such a length that the tip end side enters the upper or lower panel body. Support rods having an entry portion are provided on the front side and the back side. The front-side support bar entry portion and the back-side support rod entry portion are configured to fit between the front-side and back-side precast concrete panels of the upper or lower panel body. The front and rear direction positions of the panel body are determined when the front-side and back-side support bars of the lower panel body are fitted between the front-side and back-side precast concrete panels. Alternatively, the front and back positions of the panel body are determined when the front and back support bars of the panel body are fitted between the front and back side precast concrete panels of the lower panel body.

  Further, the front-side support bar entry portion and the back-side support rod entry portion have an outer surface of the tip portion formed into a C-shaped or inverted-C-shaped slope. The tip is tapered. It becomes easy to enter the upper or lower panel body.

4) Construction of concrete wall Place the upper panel on the lower panel. Then, the upper-stage panel body is disposed with a gap having a preset width and a concrete filling space placed on the lower-stage panel body.
The upper and lower panel bodies are respectively attached to the outer surfaces of the upper and lower precast concrete panels across the concrete filling space on the front side and the back side. The formwork plate closes the opening outside the concrete filling space.
The upper panel body drives the ready-mixed concrete into the interstitial concrete space between the front-side and back-side precast concrete panels. The ready-mixed concrete flows down to the upper surface of the embedded concrete in the lower panel body, fills the concrete-filled spaces on the front and back sides of the upper and lower panel bodies, and fills the embedded concrete space in the upper panel body.
The concrete cast on the upper panel body is cured and hardened. After the concrete has hardened, remove the form plate.
A concrete wall is constructed by stacking panels up and down.

Furthermore, after the in-situ concrete of the upper panel body is hardened, the panel body is stacked as before. That is, the next-stage panel body is placed thereon. Install the formwork plate. Drive in ready-mixed concrete. Harden cast-in-place concrete. Remove the formwork plate.
Build a concrete wall by repeatedly stacking panels.

  When the concrete wall is a reinforced concrete wall, the precast concrete panel is a reinforced concrete panel. The cast-in-place concrete will be reinforced concrete. That is, the reinforcing bars are placed in the panel body before the concrete is placed.

1. A panel body stacked on the construction site to construct a concrete wall,
The panel body has a precast concrete panel on the surface side arranged on the surface of the concrete wall and a precast concrete panel on the back side arranged on the back side facing each other, and a support member and a support member are installed between them. And connecting the precast concrete panels on both sides with the mounting of the receiver, the width is the same as the thickness of the concrete wall,
The support is provided with a support bar protruding above or below the precast concrete panel,
The receiver is provided with a receiving portion that hits the tip of the support bar of the lower or upper panel body,
The support and receiver are configured to float and support the panel body by placing the other on one side,
The protruding length of the support bar and the vertical position of the receiving part are determined so that when the panel bodies are stacked, the gap between the precast concrete panels of the upper and lower panel bodies has a width suitable for filling concrete. A panel body for building a concrete wall, characterized in that it is made into a concrete filling space.
2. In the panel body for building a concrete wall according to 1 above,
The panel body is provided with a left and right positioning mechanism that determines the position in the left and right direction when placed on the lower panel body,
In the left-right positioning mechanism, positioning pieces are provided on the left and right of the tip of the support bar of the support or the receiving part of the support, and the tip of the support of the support or the support bar of the support is fitted between the left and right positioning pieces The configuration is such that the position in the left-right direction is determined.
3. In the panel body for concrete wall construction of 2 above,
The left and right positioning pieces are characterized by being outwardly opened in an inverted C shape or C shape.
4). In the panel body for the construction of the above-mentioned 1, 2, or 3 concrete walls,
When the panel body is placed on the lower panel body, it is provided with a longitudinal positioning mechanism that determines the position in the width direction and the longitudinal direction,
In the front-rear positioning mechanism, the support rod of the support tool has a length that the front end side enters into the upper or lower panel body, and support rods with entry portions are provided on the front side and the back side, and the front side support rod entry portion and The back-side support bar entry portion is fitted between the upper-side or lower-side panel body surface side and the back-side precast concrete panel to determine the position in the front-rear direction.
5. In the panel body for concrete wall construction of 4 above,
The front-side support bar entry part and the back-side support bar entry part are characterized in that the outer surface of the tip part is formed into a C-shaped or reverse-shaped slope and the tip part is tapered.
6). A method for constructing a concrete wall using the panel body according to any one of 1 to 5 above,
Place the upper panel body on the lower panel body, place the other on one of the support and the receiver, place the upper panel body on the lower panel body with a concrete-filled space,
The upper and lower panel bodies are attached to the outer surfaces of the upper and lower precast concrete panels on the front and back sides, respectively, by attaching a formwork plate across the concrete filling space and opening the outside of the concrete filling space with the formwork plate. Closed,
The upper panel body is driven by ready-mixed concrete into the interstitial concrete space between the precast concrete panels on the front and back sides.
The ready-mixed concrete flows down to the upper surface of the inner concrete of the lower panel body, fills the concrete filling space on the front and back sides of the upper and lower panel bodies, fills the inner concrete space of the upper panel body,
The concrete cast in place on the upper panel body is cured and hardened, and after hardening, the form plate is removed,
A concrete wall construction method characterized in that a concrete wall is constructed by stacking panel bodies in upper and lower stages.
7). In the construction method of the concrete wall of 6 above,
After hardening the cast-in-place concrete of the upper panel, place the next-stage panel on it, attach the formwork plate, drive in the ready-mixed concrete, harden the cast-in-place concrete, removal,
A concrete wall is constructed by repeating the stacking of panel bodies.
8). In the construction method of the concrete wall of 6 or 7 above,
Precast concrete panels are reinforced concrete panels,
Reinforcing bars are placed in the panel before placing concrete, and the on-site concrete is reinforced concrete.

  In constructing the concrete wall, it is possible to efficiently perform the work of arranging the next-stage precast concrete panel on the precast concrete panel with a gap for filling the concrete.

The front view of the panel body used for construction of the concrete wall in the embodiment of the present invention. FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1. FIG. 3 is an enlarged cross-sectional view taken along line BB in FIG. 1. The CC sectional view enlarged view of FIG. The top view of the panel body. The DD sectional view taken on the line of FIG. The front view of the state which accumulated the panel body. EE sectional view taken on the line of FIG. The front view of the state which constructed the 1st step panel body at the time of construction of the concrete wall. FIG. 10 is an enlarged sectional view taken along line FF in FIG. 9. The front view of the state which constructed the panel body of the 2nd step. FIG. 12 is an enlarged sectional view taken along line GG in FIG. 11. The front view of the state which constructed the panel body of the 3rd step. FIG. 14 is a sectional view taken along line HH in FIG. 13. The front view of the concrete wall. The II sectional view taken on the line of FIG.

[Configuration of panel body]
As shown in FIGS. 1 to 6, the panel body 1 used for the construction of the concrete wall of the embodiment is a precast concrete panel 2 on the surface side arranged on the surface of the concrete wall to be constructed and a precast on the back side arranged on the back surface. Two pieces of the concrete panel 2 face each other and are juxtaposed, and a support member 3 and a support member 4 are spanned and attached therebetween. The precast concrete panels 2 on the front side and the back side are connected and connected by attaching the support 3 and the support 4. The space between the precast concrete panels 2 on both sides is a concrete-filled space 5. The panel body 1 has the same longitudinal dimension and width as the concrete wall thickness to be constructed.

  The precast concrete panels 2 on the front surface side and the back surface side have a horizontally long rectangular shape and have the same shape and size. The precast concrete panel 2 has chamfered upper, lower, left and right ridge lines on the inner surface. Although not shown, a reinforcing bar is buried inside. Reinforced concrete panels are used. In the embodiment, the vertical, horizontal, and width dimensions of the panel body 1 are 100 × 300 × 60 cm. The thickness of the precast concrete panel 2 is 10 cm.

The support 3 and the support 4 are used as a stacking tool for the panel body 1 in addition to the connecting tool for the precast concrete panels 2 on both sides.
The support 3 is arranged on the upper part of the panel body 1 and is provided with a support bar 11 protruding above the precast concrete panel 2. The support rods 11 are provided on the front surface side and the back surface side, respectively. The support 4 is disposed at the lower part of the panel body 1, and the receiving portion 12 is provided at a position directly below the support bar 11 and a position corresponding to the upper end of the support bar 11 of the lower panel body. The receiving part 12 is provided on the front surface side and the back surface side, respectively. The support member 3 and the support member 4 disposed above and below are provided on the left and right parts of the panel body 1, respectively. In the panel body 1, the support bar 11 of the support member 3 and the receiving part 12 of the support member 4 are arranged at four positions on the front, rear, left, and right, respectively. As shown in FIGS. 7 and 8, the upper panel body 1 is floated and supported on the lower panel body 1 by placing the upper panel body support 4 on the lower panel body support 3. Yes.

  The protruding length of the support bar 11 and the vertical position of the receiving portion 12 are such that when the panel body 1 is stacked, the gap 13 between the precast concrete panels 2 of the upper and lower panel bodies has a width suitable for filling concrete. It has established. The gap 13 is a concrete filling space 13. In the embodiment, the gap and the width of the concrete filling space 13 are 5 cm. The thickness of the precast concrete panel 2 is half.

  When the panel body 1 is placed on the lower panel body 1, the panel body 1 is disposed at a position directly above the lower panel body 1. In order to facilitate placement at the position directly above, a left / right positioning mechanism that determines the position of the panel body 1 in the left / right direction and a front / rear positioning mechanism that determines the position of the panel body 1 in the width direction and the front / rear direction are provided.

  As shown in FIGS. 1 to 3, the left-right positioning mechanism is provided with positioning pieces 16 on the left and right at the upper end of the support bar 11 of the support. When the receiving part 12 of the receiving member is fitted between the left and right positioning pieces 16, the horizontal position of the receiving member 4 and the horizontal position of the panel body 1 are determined. The left and right positioning pieces 16 are outwardly opened in an inverted C shape. The receiving portion 12 of the receiver is easily inserted between the left and right positioning pieces 16.

  As shown in FIGS. 7 and 8, the front-rear positioning mechanism is configured such that the support bars 11 on the front surface side and the back surface side of the support member have such a length that the upper end side enters into the upper panel body 1. When the front-side and back-side support bars 11 are fitted between the front-side and back-side precast concrete panels 2 of the upper panel body, the front-rear direction position of the panel body 1 is determined. As shown in FIG. 2 and FIG. 3, the front part and the back part of the support bar 11 in which the support member 11 has an upper surface formed with a C-shaped slope 17. The upper end is tapered. It is easy to enter the upper panel body 1.

  As shown in FIGS. 1 to 3, the support 3 is a substantially H-shaped metal fitting, and the main material groove steel is welded to the H shape. The support bars 11 on the front surface side and the back surface side are each formed into a grooved steel, and a flat steel is horizontally welded to the upper end of the grooved steel. The lower surface of the front and back side support rods 11 is fixed to the inner surface of the precast concrete panel 2 on the front side and the back side with bolts 21. Each of the precast concrete panels 2 on the front side and the back side is provided with screw holes for bolts 21 on the inner surface by inserts. The support bars 11 on the front surface side and the back surface side are arranged with their outer surfaces in the same plane as the inner surfaces of the precast concrete panels 2 on the front surface side and the back surface side, respectively. The left and right positioning pieces 16 are formed by welding flat steel to the left and right of the upper end of the grooved steel of the support bar 11 so as to open outward in a reverse C shape.

As shown in FIGS. 1 to 3, the support 4 is a rod-shaped metal fitting, and the main material is a grooved steel. The front surface side and the back surface side receiving portions 12 are provided at the end portions on the front surface side and the back surface side of the grooved steel 4 respectively. Flat steel is welded to both ends of the receiving steel 4 grooved steel. The flat steel bars at both ends are fixed to the inner surfaces of the precast concrete panels 2 on the front surface side and the back surface side by bolts 22 respectively. Each of the precast concrete panels 2 on the front surface side and the back surface side is provided with screw holes for bolts 22 on the inner surfaces by inserts.
In addition, a bar-shaped metal fitting similar to the support 4 is attached as a reinforcing connecting member 26 between the precast concrete panels 2 on the front surface side and the back surface side. In addition, a separator 27 of a spacing member is attached.

[Usage of panel body, construction method of concrete wall]
The panel body 1 is manufactured at a factory. And it transports to the construction site of a concrete wall.
As shown in FIGS. 9 and 10, the first-stage panel body 1 is constructed on the construction surface 31 at the construction position of the concrete wall.
On the construction surface 31, the support bases 32 corresponding to the protruding portions of the support bars 11 of the panel body support tools are arranged in the front, rear, left and right like the support bars 11. The first-stage panel body 1 descends while being held above the support base 32. In the first-stage panel body 1, the front and rear left and right support bases 32 are inserted. The first-stage panel body 1 places each receiving portion 12 of the receiving device on a support base 32. Then, the first-stage panel body 1 is arranged on the construction surface 31 with a gap 13 having a preset width. In the first-stage panel body 1, a horizontally long concrete filling space 13 is formed between the precast concrete panel 2 and the construction surface 31 on the front surface side and the back surface side, respectively. The horizontally long concrete filling space 13 on the front surface side and the back surface side communicates with the concrete embedding space 5 of the first-stage panel body.

  On the left or right side of the first-stage panel body 1 arranged on the construction surface 31, the next first-stage panel body 1 is similarly arranged. A gap 33 having a preset width is provided between the left and right first-stage panel bodies 1. In the left and right first-stage panel bodies 1, a vertically long concrete filling space 33 is formed between the left and right precast concrete panels 2 on the front surface side and the back surface side, respectively. The vertically long concrete filling space 33 on the front surface side and the back surface side communicates with the concrete embedding space 5 of the first-stage panel body.

  After the placement of the first-stage panel body, the left and right first-stage panel bodies 1 are vertically elongated across the vertically long concrete filling space 33 on the outer surfaces of the left and right precast concrete panels 2 on the front surface side and the back surface side, respectively. The formwork plate 34 is attached with bolts 35. The front-side and back-side precast concrete panels 2 are each provided with screw holes for bolts 35 on the outer surfaces by inserts. The vertically long formwork plate 34 closes the opening outside the vertically long concrete filling space 33.

  Moreover, the panel body 1 of the 1st step | paragraph is obstruct | occluded the laterally long formwork board 36 with the volt | bolt 37 by closing the opening of the outer side of the horizontally long concrete filling space 13 in the outer surface of the precast concrete panel 2, respectively. Attach with. Each of the precast concrete panels 2 on the front side and the back side is provided with screw holes for bolts 37 on the outer surfaces by inserts.

After closing the outer openings of the left and right vertically long concrete filling spaces 33 and the lower horizontally long concrete filling space 13 of the first stage panel body, the first stage panel body 1 is inserted into the concrete from the upper side. Put concrete in space 5. The ready-mixed concrete flows down to the construction surface 31, and the space between the horizontally long formwork plate 36 on the front surface side and the back surface side, the space 5 in the concrete, and the space between the vertically long formwork plate 34 on the front surface side and the back surface side. To charge. Ready-mixed concrete is filled in the horizontally long concrete filling space 13 on the front surface side and the back surface side. In addition, ready-mixed concrete is packed in the vertically long concrete filling space 33 on the front side and the back side. The height of the ready-mixed concrete is slightly lower than the upper side of the precast concrete panel 2 of the first-stage panel body. Although not shown in the drawing, the reinforcing bars are arranged in the first-stage panel body 1 before placing concrete.
The first-stage cast-in-place concrete 38 is cured and hardened. After the cast-in-place concrete 38 is hardened, the longitudinal and lateral formwork plates 34 and 36 are removed.

After the construction of the first-stage panel body, the second-stage panel body 1 is constructed on the first-stage panel body 1 as shown in FIGS.
The second stage panel body 1 is lowered while being held above the first stage panel body 1. In the second-stage panel body 1, an entrance portion of the support bar 11 of the front, rear, left and right support members protruding above the first-stage panel body 1 is entered. The front, rear, left, and right receiving portions 12 of the second-stage panel body support are respectively placed on the support rods 11 of the first-stage panel body support. Then, the second-stage panel body 1 is arranged with a gap 13 having a preset width at a position directly above the first-stage panel body 1. In the first-stage and second-stage panel bodies 1, a horizontally-long concrete filling space 13 is formed between the upper and lower precast concrete panels 2 on the front surface side and the back surface side, respectively. The horizontally long concrete filling space 13 on the front surface side and the back surface side communicates with the concrete embedding space 5 of the second-stage panel body.

  On the left or right side of the second-stage panel body 1 disposed on the first-stage panel body 1, the next second-stage panel body 1 is similarly disposed. A gap 33 having a preset width is formed between the left and right second-stage panel bodies 1. In the left and right second-stage panel bodies 1, a vertically long concrete filling space 33 is formed between the left and right precast concrete panels 2 on the front surface side and the back surface side, respectively. The vertically long concrete filling space 33 on the front surface side and the back surface side communicates with the concrete filling space 5 of the second-stage panel body.

  After the arrangement of the second-stage panel body, the left and right panel bodies 1 of the second stage are vertically long and straddle the vertically long concrete filling space 33 on the outer surfaces of the left and right precast concrete panels, respectively. The formwork plate 34 is attached with bolts 35. The vertically long formwork plate 34 closes the opening outside the vertically long concrete filling space 33.

  Moreover, the panel body 1 of the 1st step and the 2nd step has a horizontally long form plate 36 across the horizontally long concrete filling space 13 on the outer surface of the upper and lower precast concrete panels 2 on the front side and the back side, respectively. Install with bolts 37. The horizontally long formwork plate 36 closes the opening outside the horizontally long concrete filling space 13.

After closing the outer openings of the left and right vertically long concrete filling spaces 33 and the lower horizontally long concrete filling space 13 of the second stage panel body 1, the second stage panel body 1 is placed in the concrete from above. Put concrete into the storage space 5. The ready-mixed concrete flows down to the upper surface of the first-stage cast-in-place concrete 38, the space in the upper part of the first-stage cast-in-place concrete 38, the space between the front and back side long formwork plates 36, and the first. The concrete embedding space 5 of the two-stage panel body 1 and the space between the vertically long formwork plate 34 on the front surface side and the back surface side are filled. Ready-mixed concrete is filled in the horizontally long concrete filling space 13 on the front surface side and the back surface side. In addition, ready-mixed concrete is packed in the vertically long concrete filling space 33 on the front side and the back side. The height of the ready-mixed concrete is slightly lower than the upper side of the precast concrete panel 2 of the second-stage panel body. Although not shown in the figure, the reinforcing bars are placed in the second-stage panel body before placing the concrete.
The second-stage cast-in-place concrete 38 is cured and hardened. After the cast-in-place concrete 38 is hardened, the longitudinal and lateral formwork plates 34 and 36 are removed.

After the construction of the second stage panel body, the third stage panel body 1 is constructed on the second stage panel body 1 as shown in FIGS. 13 and 14.
The third-stage panel body 1 is placed on the second-stage panel body 1 in the same manner as the second-stage previous panel. Vertically and horizontally long formwork plates 34 and 36 are attached. Place the rebar. Drive in ready-mixed concrete. The cast-in-place concrete 38 is cured and cured. Remove the vertically and horizontally long formwork plates 34 and 36.

  The reinforced concrete wall 41 is constructed by repeating the stacking construction of the panel body 1. As shown in FIGS. 15 and 16, the reinforced concrete wall 41 has the precast concrete panel 2 on the front side and the back side and the cast-in-place concrete 38 in close contact with each other, and the lower and upper cast-in-place concrete 38 in close contact with each other. doing. In addition, on the front side and the back side, respectively, the portion between the left and right side surfaces of the left and right precast concrete panels 2, the portion that was the vertically long concrete filling space 33, and the upper and lower side surfaces of the upper and lower precast concrete panels 2. The portion that was the horizontally long concrete filling space 13 is filled with cast-in-place concrete 38. The cast-in-place concrete 38 is thicker by the thickness of the precast concrete panel 2 than the portion where the precast concrete panel 2 is present, in a portion where the precast concrete panel 2 is not present. In the reinforced concrete wall 41, the cross-sectional area of the portion without the precast concrete panel 2 is the same as the portion with the precast concrete panel 2.

[Modification]
The present invention is not limited to the above embodiment. The following modifications are exemplified.
1. In the above-described embodiment, the panel body 1 is disposed above the support 3 and the support bar 11 of the support protrudes above the precast concrete panel 2. The support bar 11 of the support member is arranged below the precast concrete panel 2 by being arranged on the lower side.
2. In the above embodiment,
In the left and right positioning mechanism, the left and right positioning pieces 16 are provided at the upper end of the support bar 11 of the support, but are provided at the receiving portion 12 of the support.
3. In the above embodiment, the concrete wall 41 is a reinforced concrete wall, but is an unreinforced concrete wall.
4). In the above embodiment, the panel body 1 is repeatedly stacked, and the panel bodies are stacked in multiple stages of three or more to construct a concrete wall, but the panel bodies are stacked in two stages to construct a concrete wall.

  INDUSTRIAL APPLICABILITY The present invention can be used for a wall of a nuclear facility, a wall of a building, a seawall, a wall for preventing a tsunami, and a wall for preventing a strong wind.

DESCRIPTION OF SYMBOLS 1 Panel body 2 Precast concrete panel 3 on the surface side and back side 3 Supporting tool 4 Receiving tool 5 Concrete insertion space 11 Supporting tool support bar 12 Receiving tool receiving part 13 Clearance, horizontally long concrete filling space 16 Positioning piece 17 Slope 21 Bolts for fixing a support member 22 Bolts for fixing a support member 26 Reinforcing connecting material 27 Separator 31 for spacing member 31 Construction surface 31
32 Supporting base 33 Gap, vertically long concrete filling space 34 Vertically shaped form plate 35 Bolts for fixing the vertically long form plate 36 Horizontally formed form plate 37 Bolts for fixing the horizontally long form plate 38 On-site concrete 41 Reinforced concrete wall

Claims (8)

A panel body stacked to build a concrete wall,
The panel body has a precast concrete panel on the surface side arranged on the surface of the concrete wall and a precast concrete panel on the back side arranged on the back side facing each other, and a support member and a support member are installed between them. And connecting the precast concrete panels on both sides with the mounting of the receiver, the width is the same as the thickness of the concrete wall,
The support is provided with a support bar protruding above or below the precast concrete panel,
The receiver is provided with a receiving portion that hits the tip of the support bar of the lower or upper panel body,
The support and receiver are configured to float and support the panel body by placing the other on one side,
The protruding length of the support bar and the vertical position of the receiving part are determined so that when the panel bodies are stacked, the gap between the precast concrete panels of the upper and lower panel bodies has a width suitable for filling concrete. A panel body for building a concrete wall, characterized in that it is made into a concrete filling space. The panel body is provided with a left and right positioning mechanism that determines the position in the left and right direction when placed on the lower panel body,
In the left-right positioning mechanism, positioning pieces are provided on the left and right of the tip of the support bar of the support or the receiving part of the support, and the tip of the support of the support or the support bar of the support is fitted between the left and right positioning pieces. The panel body for building a concrete wall according to claim 1, wherein the right and left direction position is determined.   The panel body for building a concrete wall according to claim 2, wherein the left and right positioning pieces are outwardly opened in an inverted C shape or C shape. When the panel body is placed on the lower panel body, it is provided with a longitudinal positioning mechanism that determines the position in the width direction and the longitudinal direction,
In the front-rear positioning mechanism, the support rod of the support tool has a length that the front end side enters into the upper or lower panel body, and support rods with entry portions are provided on the front side and the back side, and the front side support rod entry portion and The front-rear direction position is determined by fitting the back-side support bar intrusion portion between the front-side and back-side precast concrete panels of the upper or lower panel body. Or the panel body for concrete wall construction of 3.   The front-side support bar entry portion and the back-side support rod entry portion are characterized in that the outer surface of the front end portion is a C-shaped or reverse C-shaped slope, and the front end portion is tapered. Item 5. A panel body for constructing a concrete wall according to Item 4. A method for constructing a concrete wall using the panel body according to claim 1,
Place the upper panel body on the lower panel body, place the other on one of the support and the receiver, place the upper panel body on the lower panel body with a concrete-filled space,
The upper and lower panel bodies are attached to the outer surfaces of the upper and lower precast concrete panels on the front and back sides, respectively, by attaching a formwork plate across the concrete filling space and opening the outside of the concrete filling space with the formwork plate. Closed,
The upper panel body is driven by ready-mixed concrete into the interstitial concrete space between the precast concrete panels on the front and back sides.
The ready-mixed concrete flows down to the upper surface of the inner concrete of the lower panel body, fills the concrete filling space on the front and back sides of the upper and lower panel bodies, fills the inner concrete space of the upper panel body,
The concrete cast in place on the upper panel body is cured and hardened, and after hardening, the form plate is removed,
A concrete wall construction method characterized in that a concrete wall is constructed by stacking panel bodies in upper and lower stages. After hardening the cast-in-place concrete of the upper panel, place the next-stage panel on it, attach the formwork plate, drive in the ready-mixed concrete, harden the cast-in-place concrete, removal,
The method for constructing a concrete wall according to claim 6, wherein the concrete wall is constructed by repeating the stacking of the panel bodies. Precast concrete panels are reinforced concrete panels,
The method for constructing a concrete wall according to claim 6 or 7, wherein a reinforcing bar is arranged in the panel body before the concrete is placed, and the in-situ concrete is made of reinforced concrete.

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