JPH05239921A - Placing-joint construction method for concrete structure - Google Patents

Abstract

PURPOSE:To make the efficiency of placing-joint work by demarcating the inside of a form, which partition body provided in a concrete placing-joint part in a form, and placing ready mixed concrete in the form via the partition body to places joints. CONSTITUTION:A partition body 1 is fitted to a concrete placing-joint part C of a form B provided on a floor slab A, to partition the frame B with the partition body 1. The partition body 1 is formed with a lath 2 and a supporting rod 3 reinforcing the lath 2. Next, ready mixed concrete is placed in the form B partitioned with the partition body 1. Successively after the ready mixed concrete 4 is hardened, the ready mixed concrete 4 is placed in remaining forms B leaving the partition body 1 as it is, carrying out successive pour jointing. This provides an excellent successive pour jointing surface, and permits the buried-abandonment of the partition body 1, therefore with easy accident- treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a splicing method for concrete structures.

[0002]

2. Description of the Related Art Usually, a relatively large-scale concrete structure or a concrete structure having a limited amount of concrete to be poured per day is constructed by pouring fresh concrete into several times. ..

[0003] As a method for joining concrete structures, laths, pipes, bamboos, etc. are provided at the joining portions to divide the formwork, and the fresh concrete is placed. The section was pouring fresh concrete.

[0004]

However, in the above-mentioned construction method for placing concrete structures, since laths, pipes, bamboos, etc. are provided in the placing sections to divide the formwork, when concrete is placed. There is a problem that the splicing part meanders, and the amount of cement paste that comes out is large, which makes post-processing troublesome.In addition, pipes and bamboo must be removed after pouring ready-mixed concrete, which is a very difficult work. It was.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a passable portion with a passable surface, to facilitate post-treatment, and to remove a partition body of the welded portion. It is to provide a splicing method for a concrete structure that can be spliced without using it.

[0006]

[Means for Solving the Problems] In order to achieve the above objects, a method for joining concrete structures according to the present invention divides the inside of a formwork with a partition body having a support rod on one side at the upper end,
After pouring ready-mixed concrete into the formwork divided by the partition body, and after the ready-mixed concrete is hardened, placing the ready-mixed concrete in another formwork while leaving the partition body, it is possible to pour it. It is to have a characteristic configuration.

[0007]

Since the partition rod is reinforced by the support rod provided on one surface side of the upper end of the partition member, the partition rod is reinforced by the support rod. Since the partition body will be buried, there is no need to remove it,
Post-processing can be done easily.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings in the case of joining a floor slab of a reinforced concrete structure. FIG. 1 is a sectional view showing a case where a floor slab of a reinforced concrete structure is spliced by a splicing method for a concrete structure of the present invention. First, the partition body 1 is attached to the concrete joining portion C in the form B of the floor slab A to divide the form B into a required number. In this, the partition body 1 is fixedly attached to the vertical streak a or the horizontal streak b of the floor slab A by a numbering wire or the like.

The partition 1 comprises a lath 2 and a supporting rod 3 provided on one of the upper ends, and the supporting rod 3 reinforces the lath 2. The reinforcing rod 3 is made of steel and is square and lightweight.

Next, when ready-mixed concrete is placed in the mold B partitioned by the partition body 1, the ready-mixed concrete 4
Is stopped by the partition 1. At this time, the partition 1 is supported by the support rod 3
Since it is reinforced by, the ready-mixed concrete 4 reinforces the splicing portion C without meandering.

Next, after the ready-mixed concrete 4 is hardened, the remaining form B is left in the state where the partition 1 is left as it is.
Pour fresh concrete 4 into it. As a result, it is possible to save the labor of removing the partition body 1 and to make the striking joint portion C a good passing joint surface.

The partition body 1 can be replaced with a rubber tube in addition to the lath 2. By using a rubber tube together with the lath 2, the cement paste can be prevented from flowing out. The splicing method is not limited to the floor slab A as described above, and can of course be used for splicing beams or walls. Further, as shown in FIG. 3, the partition 1 can also be cut into a zigzag shape and used for a floating mold such as a parapet D or a staircase.

[0013]

[Effects of the Invention] The inside of a form is divided by a partition body having a support rod on one side at the upper end, and fresh concrete is placed in the form frame divided by the partition body, and the partition is performed after the fresh concrete is hardened. Since the concrete does not meander by placing ready-mixed concrete in another formwork with the body left and joining them,
It can be a plunge surface in the street.

Since the partition body can be buried, post-processing can be facilitated and work efficiency can be improved.

In the case of fluidized concrete, it is necessary to pour concrete at a time interval because of the violent blowing out. However, in the present invention, the pour time can be shortened, so cold joints can be prevented.

[0016]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a state in which fresh concrete is placed on one side of a mold by a method for joining concrete structures according to the present invention.

FIG. 2 is a cross-sectional view of a state in which ready-mixed concrete is placed on the entire formwork.

FIG. 3 is a cross-sectional view showing a rooftop parapet.

[Explanation of symbols]

 1 Partition 3 Support rod 4 Fresh concrete B formwork

Claims (1)

[Claims] 1. A partition body having a support rod on one side of the upper end divides the inside of the formwork, and the concrete is placed in the formwork separated by the partition body, and the partition is formed after the ready-mixed concrete is hardened. A method for joining concrete structures, characterized by placing ready-mixed concrete in another formwork while leaving the body, and joining the concrete.