JPH0229821B2 - PUREKYASUTOHEKI * HARINOSETSUGOHOHO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for joining a precast wall and a beam using a precast concrete wall board and a precast concrete beam formwork with a U-shaped cross section.

[Prior art and problems to be solved by the invention]

Various prefabricated construction methods for reinforced concrete buildings have been developed and implemented. It is also known in the art to make the wall plate a precast concrete member with connecting reinforcing bars protruding from it, or to use a precast concrete beam formwork with a U-shaped cross section and place the upper part of the beam together with the floor concrete. be.

By the way, it is generally difficult to join a precast beam and a wall, and the beam and wall are usually integrated into a precast member.

However, there are many disadvantages in this case, such as the weight of the members being large and the need for curing them to prevent them from falling during transportation.

In order to solve this problem, the present invention has been developed by integrating the above-mentioned known means and using a unique arrangement and combination to easily and reliably connect precast beams and walls.

[Means for solving problems]

This invention has a U-shaped cross-section by erecting a precast concrete wall plate between the column positions, which has an insertion opening by embedding a reinforcing bar connection sleeve in the lower part, and has connecting reinforcing bars such as main reinforcing bars protruding from the upper end. A precast concrete beam form is installed on the precast concrete wall plate, and the connecting reinforcing bars are inserted into the connecting reinforcing holes at the bottom of the beam form, and concrete is poured into the beam form. This is a method for joining precast walls and beams in which the walls and beams are integrated, the connection reinforcing bars are inserted into the reinforcing bar connection sleeves of the upper precast concrete wall plate, and the same steps are repeated sequentially.

〔Example〕

The details of this invention will be explained below based on illustrated embodiments.

First, the column assembly reinforcing bars 1 are established at the column positions. The lower end of the precast concrete wall plate 2 has a connection reinforcing bar insertion hole formed by embedding a sleeve 3 with an open lower end. Further, a connecting reinforcing bar 4 is provided protruding from the upper end, and a beam insertion reinforcing bar 5 is provided protrudingly provided as necessary. Note that the connecting reinforcing bar 4 also serves as the main reinforcing bar, and it is desirable that its lower end be inserted into the upper half of the sleeve 3.

The above precast concrete wall plate 2 is erected between the column positions, a formwork 6 is assembled around the column assembly reinforcing bars 1, and the column concrete is poured so as to bury both sides of the precast concrete wall plate 2.
Next, a precast concrete beam form 7 with a U-shaped cross section and a connecting reinforcing bar insertion hole at the bottom is installed on the precast concrete wall plate 2, and the protruding connecting reinforcing bar 4 is inserted into the connecting reinforcing bar insertion hole of the beam form. Insert into.

Note that the upper part of the stirrup reinforcement 8 and the upper end main reinforcing bars 9 are arranged on the upper part of the beam form 7, and the beam form 7 is used to install a thin concrete plate for a slab.

Next, slab concrete is cast inside the beam formwork 7 and a single layer integrating the beam and wall is finished, and then the precast concrete wall plate 3 of the upper floor is erected on the connecting reinforcing bars 4 protruding from the beam.

The above construction is repeated in order until the upper floors are reached.
Note that the pillar portion is not limited to the above-mentioned embodiment, but may also be a prefabricated pillar.

〔Effect of the invention〕

This invention has the above-mentioned configuration, in which most of the walls and beams are prefabricated, and the connecting reinforcing bars protruding from the upper end of the walls are inserted through the beams and into the connecting reinforcing bar insertion holes of sleeves etc. buried in the lower ends of the walls on the upper floor. This makes it easy and reliable to integrate the precast walls and beams on the upper and lower floors.

[Brief explanation of drawings]

FIG. 1 is an elevational view showing an overview of the construction process of the present invention, and FIG. 2 is a perspective view of the beam formwork portion. 1...Column assembly reinforcing bars, 2...Precast concrete wall plates, 3...Sleeves, 4...Connecting reinforcing bars, 5...Beam insertion bars, 6...Formwork, 7...Beam formwork, 8...Starlap bars, 9...Top main reinforcing bars .

Claims (1)

[Scope of Claims] 1. A precast concrete wall plate having connecting reinforcing bars at the lower end and protruding connecting reinforcing bars at the upper end, and a U-shaped precast concrete beam formwork having connecting reinforcing bars at the bottom. , install a precast concrete beam formwork on the precast concrete wall board, insert the connecting reinforcing bars into the beam formwork, and pour concrete into the beam formwork to form the wall and A method for joining precast walls and beams, which is characterized by integrating the beams.