JPS6043546A - Prefabricated structure of precast concrete panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an assembly structure of precast concrete slabs that is employed when building a building by arranging a large number of precast concrete slabs vertically and horizontally.

In recent years, the precast concrete slab assembly method has been adopted as one of the construction methods for constructing large buildings.

In this construction method, as shown in Figure 1, a large number of large precast concrete slabs (hereinafter referred to as 20
(referred to as version) 2. , Z are stacked vertically and paralleled horizontally to the left and right to construct a large wall 3, and buildings are successively constructed.

However, as shown in FIG. 1, the wall 3 constructed by the conventional method has problems such as cracks appearing in the 20th plate when an external force such as an earthquake force F is applied thereto.

To explain the reason for this, in the conventional assembly of each PC version λ, the vertical joint surfaces of the mutual joint surfaces are fixedly joined, and the horizontal joint surfaces are joined with a certain degree of relative movement. Because there is.

In other words, as shown in FIG. 2, the upper and lower PC versions.

In a, the anchor plate H provided on the upper end surface of one is welded to the anchor plate S provided on the lower end surface of the other, and as shown in FIG.
are fixedly joined to each other by pouring concrete 6 between the joint surfaces in the vertical direction.

Therefore, the wall 3 formed in this way acts as if it were a single wall, so as shown in Fig.
Cracks G etc. occur on both sides, and if the seismic force F is large, both sides will be destroyed.

The present invention has been made in view of these points, and it is an object of the present invention to provide an assembly structure for precast concrete plates in which the PC plates will not be destroyed even if external forces such as seismic forces act on them.

In the present invention, PC plates arranged in the vertical direction are fixed to each other, and 20 plates adjacent in the horizontal direction are arranged in series so as to be relatively movable in the vertical direction, and the PC plates arranged in the vertical direction are Each board is installed on the foundation so that it can tilt freely within its vertical plane with the lowest PC board as the center, and when earthquake force etc. is applied, the external force is alleviated and the PC board is prevented from being destroyed. shall be.

Embodiments of the present invention shown in FIGS. S to 3 will be described below.

In this embodiment, as shown in FIG. 5 and FIG.
/ PC version lλ with 3 rows on top and bottom and 3 rows on left and right.

/, 2 are arranged to form the wall 13. Figure S shows the normal state, and Figure 6 shows the state when seismic force is applied.

And, the PC version lco, meco &'J which are stacked above and below.
They are fixed to each other by suitable means, and each row has seven walls. Each lowermost PC version has a convex part /4' protruding from the lower end and a concave part 13 on the base II.
horizontal movement is prevented. The PC plates /j and /j in each row are connected to each other so as to be relatively movable in the vertical direction.

From this K, the PC version tλ, /2 of each column is the lowest PC
It is said to be able to swing freely within its vertical plane with the plate as the center.

To further explain the joining of PC plates /j, /co in each row, as shown in FIG. 5, each PC plate /2.
/A is joined by joining devices /A and /A.

This joining device 16 has a pressure that is applied to each PC plate fco, /, 2 when the external force applied to the PC plate fco, /, 2 is below a certain level of strength. /
It is only necessary to connect the parts in a fixed state and, when the strength exceeds a certain level, to allow relative movement in the vertical direction of each 20th edition /J, /λ and to break the connection, for example, as shown in Figures 7 and 3. It is recommended to form the

This joining device 16 has an angle/g welded to an anchor reinforcement buried inside each PC plate, and a plate/g to the 1g.
When the plate /9 and the angle /g are applied, each PC version /J, /2 is a loose hole co/ , :1/, relative movement is possible.

Therefore, it is sufficient to tighten the bolts with an appropriate torque so that the above-mentioned force is smaller than the shear force generated in the joining device 1 when a destructive horizontal force acts on the PC plate/J.

Next, the operation of this embodiment will be explained.

In normal times and when the external force applied to the PC board is below a certain limit value, the wall 13 assumes the shape of a single wall as shown in FIG.

As shown in Fig. 6, when the seismic force F applied to the PC plate /,2 exceeds the limit value, the PC plates 1, tλ of each column fixedly connected above and below are It oscillates within the vertical plane with the plate 12 as the center. During this swinging, the bolts of the joining device 16 are loose hole co/, λ
Slide inside l. Therefore, since a large restraining force against the seismic force F as in the conventional example does not act on each PC version 1 and 1, each PC version 1 and 1 will not be destroyed.

In this way, the assembly structure of the precast concrete slabs of the present invention allows the 20 slabs in each row, which are fixed above and below, to swing independently from each other within the vertical plane even if a large seismic force or the like acts on them. Therefore, there is no chance of each PC version being destroyed, and the structure is simple, easy to manufacture, and the cost is low.

[Brief explanation of the drawing]

Figure 1 is a front view showing the assembly structure of a conventional precast concrete slab, Figure 1 is a sectional view taken along line ■-■ in Figure 1, and Figure 3 is a sectional view taken along line 11 in Figure 1. , Fig. D is a front view showing the destroyed state of the PC plate, Figs. Figure 6 is a front view showing the shaking state when an earthquake force is applied, Figure 7 is a partially cutaway front view of the i-coupling device, and Figure 3 is a sectional view taken along the line ■-■ in Figure 7. . //...Basic, 7.2...Precast version. Applicant's agent Kiyona Inomata 1st. 3rd order 4th bacterium 5th order $6 7th picture

Claims (1)

[Scope of Claims] l In a precast concrete slab assembly structure in which a plurality of precast concrete slabs are arranged vertically and laterally on a foundation, the precast concrete slabs arranged in the vertical direction are fixed to each other. The horizontally adjacent precast concrete slabs are connected so that they can move relative to each other in the vertical direction, and the precast stone concrete slabs connected in the vertical direction are each vertically connected with the lowermost precast concrete slab as the center. An assembly structure for a precast concrete slab, characterized in that it is tiltable in a plane and is installed on the foundation. 2. The precast concrete slab assembly structure according to claim 1, wherein the precast concrete slab at the bottom of the unit is installed so as to be tilted at a fixed position with respect to the foundation.