JPH04209231A - Wall type precast structure - Google Patents

Abstract

PURPOSE:To obtain a wall type precast structure having high flexibility in a plane design by making use of beam directional bearing walls joined with each other through perpendicular joining sections of panels overlapping precast slabs. CONSTITUTION:Beam directional bearing walls 3 to overlap precast wall panels 2 arranged to specific beam directional positions on the foundational structure 1 of cast-in-place reinforced concrete and span directional bearing walls 5 of wall panels 4 are projected at a right angle to span direction from the bearing walls 3, and floor slabs are placed on the bearing walls 3 and 5 to constitute. The wall panels 2 forming the bearing walls 3 are combined with perpendicular joining sections 7 together as a unit and, at the same time, the wall panels 4 forming the bearing walls 5 are also joined with perpendicular sections 7 each other. According to the constitution, a wall type precast structure A having high flexibility in a plane design can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a wall-type precast structure using a precast reinforced concrete product as a wall structural element.

[Prior Art] Conventionally, when constructing a wall-type precast structure, such as an apartment complex, the structure was constructed by directly assembling precast board walls and floor slabs on site.

The configuration of this conventional wall-type precast structure will be explained based on FIG. 6 and T%7.

FIG. 6 is a plan view of one unit of a condominium made of a conventional wall-type precast structure, and FIG. 7 is a perspective view illustrating how wall panels of the conventional wall-type precast structure are joined.

The N1 layer of the conventional wall-type precast structure 100 is:
A column direction load-bearing wall 103 formed by arranging precast wall panels 102 at predetermined positions in the column direction, and a precast wall panel 104 protruding from the column direction load-bearing wall 103 at right angles in the span direction. It is composed of a load-bearing wall 105 in the longitudinal direction that is joined and formed, and a precast floor slab 106 that is placed on the load-bearing wall 103 in the column direction and the load-bearing wall 105 in the longitudinal direction.

Each wall panel 1 constituting the column direction load-bearing wall 103
02 are joined and integrated at a vertical joint 107.

Further, the wall panels 104 constituting the tension-bearing wall 105 are also joined to each other at vertical joints 107 and are also joined to the column-direction bearing wall 103.

These column direction load-bearing walls 103 and tension direction load-bearing walls 105
A floor slab 106 is placed on top of the floor slab 106 to form a first layer wall type precast structure 101. Furthermore, a second device with a similar configuration
A load-bearing wall 113 in the column direction and a load-bearing wall 115 in the longitudinal direction of the layer
and are joined to the first layer wall precast structure 101 via the horizontal joint 108.

The conventional load-bearing walls 103 and 113 in the column direction of the wall-bottom precast structure 100 constructed in this manner usually use gate-shaped or mouth-shaped wall panels.

This bearing wall in the girder direction needs to have a thickness commensurate with the bearing capacity required for the structure, and the reinforcement within the wall is also designed taking into consideration the load during construction and the load during earthquakes.

In the conventional wall-bottom precast structure 100, the wall thickness cannot be made very thick due to handling such as transportation and erection during construction, so the number of structural walls 103 and 113 in the column direction is increased, and usually 3 to 4. It was designed by

[Problem to be solved by the invention] However, such a conventional wall-bottom precast structure 1
According to 00, there are 10 load-bearing walls in the longitudinal direction even in the living room of one house.
3 has appeared, greatly limiting the degree of freedom in designing the floor plan of the house.

In order to increase the flexibility of this design floor plan, it is possible to increase the strength of each load-bearing wall member to the same level as a cast-in-place steel reinforced concrete structure that can support a large span, but in this case, This has the disadvantage that the weight of each member is excessive, making transportation and erection difficult.

The present invention solves the above-mentioned drawbacks of conventional wall-bottom precast structures, provides a column-direction load-bearing wall that has a large bearing capacity without increasing the weight per member, and utilizes this column-direction load-bearing wall. The purpose of this project is to provide a wall-bottom precast structure with a large degree of freedom in terms of planar design.

[Means for Solving the Problems] In order to solve the above problems, the wall-bottom precast structure of the present invention includes stacked wall panels formed by stacking a plurality of precast boards, which are joined by a vertical joint. a shear wall in the girder direction assembled by the girder direction shear wall; a shear wall in the girder direction formed by wall panels of precast boards projecting from the shear wall in the girder direction via vertical joints; It is characterized by consisting of a floor slab that is mounted on and connected to the wall.

[Function] In the wall-bottom precast structure of the present invention, a plurality of precast boards are stacked to form a stacked wall panel, and the stacked wall panels are joined to each other via a vertical joint. These continuous stacked wall panels constitute a load-bearing wall in the row direction.

A wall panel made of a precast board is provided to protrude from this column direction load-bearing wall in the span direction via a vertical joint, and this wall panel is used as a span direction load-bearing wall.

A floor slab is mounted on and joined to the longitudinal direction load-bearing wall and the column direction load-bearing wall to construct a wall-bottom precast structure.

[Example] Next, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a plan view of the wall-bottom precast structure of the present invention, and FIG. 2 is a perspective view illustrating the state of joining of stacked wall panels.

The first floor of this wall-bottom precast structure A includes a cast-in-place reinforced concrete foundation structure 1 and a precast wall panel 2 arranged at a predetermined position in the girder direction on this foundation structure 1. Load-bearing wall in the row direction made of multiple stacked sheets 3
and a tension direction load-bearing wall 5 consisting of a precast wall panel 4 protruding from the row direction load-bearing wall 3 at right angles to the tension direction; It is composed of precast floor slabs 6 that are joined at the same time, and each wall panel 2 that constitutes the load-bearing wall 3 in the column direction is joined at a vertical joint 7 and fixed as one piece. or,
The wall panel 4 constituting the tension-bearing wall 5 also has a vertical joint 7
They are joined to each other and also to the bearing wall 3 in the column direction.

Further, the column-direction load-bearing walls 3 and the tension-direction load-bearing walls 5 are joined to the foundation structure 1 via horizontal joints 8.

In this embodiment, the floor slab 6 is made of precast construction, but it may be made of cast-in-place reinforced concrete.

On the first layer wall precast structure B constituting the first floor, there is a load-bearing wall 1 in the column direction for the second layer with a similar structure.
3 and the tension direction load-bearing wall 15 are joined via the horizontal joint part 8, and the floor slab 16 is further mounted and joined.

The upper floor portion is constructed in a similar manner, and a multi-story wall-type precast structure A is constructed.

Next, the structure of the column direction load-bearing walls 3 and 13 will be explained. These load-bearing walls 3 and 13 in the row direction are made by stacking two wall panels 2 made of gate-shaped precast boards, and have twice the load-bearing strength of the load-bearing wall 2 made of one wall panel. ing.

The vertical joint portion 7 and horizontal joint portion 8 of the load-bearing wall 3 in the column direction will be explained based on FIG. 3. FIG. 3 is a perspective view illustrating the vertical joint 7 and horizontal joint 8 of the wall panel 2 on the first floor.

In the foundation structure 1, vertical joint reinforcing bars a are planted in advance at the parts where the vertical joint $7 is placed and joined.
When building the wall panel 2 of the floor part, the next vertical part joining reinforcing bar 7b is welded and joined to this vertical part joining reinforcing bar 7a.

Further, the wall panel connecting reinforcing bars 2b protruding from the end portions 2a of the wall panels 2 sandwiching the vertical joint portion 7 are welded and joined together. After that, post-cast vertical joint concrete 7C is poured in the gap between the wall panels 2, and the mutual wall panels 2
join.

Further, in the foundation structure 1, a joining anchor reinforcing bar 8a is planted at a predetermined position in the part where the wall panel 2 is mounted and joined, and this joining anchor reinforcing bar 8a is attached to the wall panel 2.
The respective reinforcing bars 2d and 8a are attached to the joining reinforcing bars 2d exposed in the recess 2c provided at the lower part of the steel plate 8b, and are welded and joined to the steel plate 8b.

The horizontal joint 8 can be joined by welding anchor reinforcing bars that have been buried in advance as in this embodiment, as well as crimp joining in which a sheath pipe is attached to the anchor bars and gripped, and screws in which a coupler is attached and tightened. Any joining method may be used, such as tightening joining or sleeve joining in which a sleeve is fitted and mortar is injected into the joint portion and the sleeve pipe.

The tension-bearing wall 5 is also joined using a similar joining method, and the upper floor portion is also constructed.

Next, another example of a column-direction load-bearing wall using precast wall panels other than the gate type will be described based on FIG. 4.

FIG. 4 is a perspective view of a wall-type precast structure C using a T-shaped wall panel 21 and an L-shaped wall panel 22 as wall panels made of precast boards constituting the load-bearing wall 23 in the column direction.

In this case, each T constituting the column direction load-bearing wall 23
The type wall panel 21 and the L type wall panel 22 are joined together, or the T type wall panels 21 are joined together by a beam joint part 9 provided in the beam part.

This beam joint 9 is connected to the mutual wall panels 2 as shown in FIG.
1.22 The connecting reinforcing bars 21b and 22b protruding from the beam ends 21a and 22a are welded and joined together. Thereafter, post-cast joining concrete 9a is poured between the beams to integrate them.

Note that the shape of the wall panels 21 and 22 is not limited to the above shape, and of course, any shape may be used as long as it can form an integrated load-bearing wall by joining.

[Effects of the Invention] As explained above, the wall-type precast structure of the present invention uses a wall panel made of a plurality of precast boards stacked on top of each other, thereby increasing the proof stress without increasing the weight of each member. By providing a large load-bearing wall in the row direction and utilizing this load-bearing wall in the row direction, it is possible to provide a wall-bottom precast structure with a large degree of freedom in plan design.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the wall bottom precast structure of the present invention, Fig. 2 is a perspective view illustrating the joining situation of overlapping wall panels, and Fig. 3 is a vertical joint and horizontal joint of wall panels on the first floor. Figure 5 is a perspective view illustrating a joint, and Figure tS4 is a perspective view of a wall bottom precast structure using a T-shaped wall panel and an L-shaped wall panel as a wall panel made of precast boards constituting a load-bearing wall in the column direction. Figure 6 is a perspective view of a beam joint, Figure 6 is a plan view of one unit in an apartment building made of a conventional wall-bottom precast structure, and Figure 7 explains the connection status of wall panels of a conventional wall-bottom precast structure. FIG. In the figure, symbol A is the wall-bottom precast structure, B is the first layer wall type precast structure, 1 is the foundation structure, 2.4 is the wall panel, 3 and 13 are load-bearing walls in the column direction, and 5.15 is the 6 is a floor slab, 7 is a vertical joint, and 8 is a horizontal joint. Figure 1 Figure 5 Figure 6

Claims (1)

[Claims] A load-bearing wall in the row direction is assembled by joining stacked wall panels formed by overlapping multiple precast boards through a vertical joint, and a precast board protrudes from the load-bearing wall in the row direction through the vertical joint. 1. A wall-type precast structure comprising a load-bearing wall in the tension direction formed by a wall panel, and a floor slab mounted on and joined to the load-bearing wall in the tension direction and the column direction load-bearing wall.