JPH05321384A - Execution method of slab - Google Patents

Abstract

PURPOSE:To prevent the leakage of cement milk, etc., by installing a sealing member in the longitudinal direction of the connecting stepped section of a half-precast concrete beam, placing a half-precast concrete slab board through the sealing member and placing concrete from the upper section of the slab board. CONSTITUTION:Reinforcements 13 are mounted onto the top face of a half- precast concrete beam 10, a part of which is exposed, sealing members 12 are stuck in the longitudinal direction or connecting stepped sections 10a, and double-sided adhesive tapes 12a are stuck onto the bases of the members 12. Half-precast concrete slab boards 11 are placed through the members 12 set up in the longitudinal direction of the connecting stepped sections 10a of the beam 10, and concrete is placed from the upper section of the slab board 11, thus constructing a slab Accordingly the sealing members 12 are installed to the connecting stepped sections 10a, thus preventing leakage from the connecting sections of cement milk, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a half for constructing a floor surface or a wall by constructing a half precast concrete slab plate (PC slab plate) on a half precast concrete (Precast Concrete) beam with partially exposed reinforcing bars. The present invention relates to a construction method for a PC beam and a half PC slab.

[0002]

2. Description of the Related Art FIG. 6 is a longitudinal sectional view showing an embodiment of a conventional slab construction method. As shown in the figure, in the conventional slab construction method, the end portions of the half precast concrete slab plate 2 are placed on the both-side joining step portions 1a, 1a of the half precast concrete beam 1. After that, the topping concrete 4 is placed from above.

[0003]

However, when the topping concrete 4 is cast by the conventional slab construction method as described above, the warp of the plate and the unevenness of the joint step cause the joint 3 to be joined. There was a defect that the PC beams leaked from the glass and became dirty. In particular, in the case of direct finishing, it was necessary to remove the slag, which made the work troublesome.

In view of the problems of the conventional slab construction method, an object of the present invention is to provide a half precast concrete beam and a slab construction method in which concrete cast on a half precast concrete slab plate does not leak. To do.

[0005]

In order to achieve the above object, the present invention is a slab for constructing a floor surface or a wall by constructing a half precast concrete slab plate on a half precast concrete beam with partially exposed reinforcing bars. In the construction method, a sealing member is provided in the longitudinal direction of the joining step of the half precast concrete beam, the half precast concrete slab plate is placed through this sealing member, and the concrete is poured from above. ..

[0006]

In the slab construction method according to the present invention, since the seal member is attached to the PC beam in advance, the cast concrete does not leak from the joint. Therefore, the finished surface can be made beautiful.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of an essential part showing a slab construction method according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an example of a half precast concrete beam used in the slab construction method of the present invention. In the figure, the slab construction method is a method of constructing a floor surface or a wall by constructing a half precast concrete slab plate 11 on a half precast concrete beam 10 in which a part of the reinforcing bar is exposed. A seal member 12 is provided in the longitudinal direction of the joining step portion 10a, a half precast concrete slab plate 11 is placed via the seal member 12, and concrete is placed on the half precast concrete slab plate to construct a slab. FIG. 2 is a perspective view showing an example of a half precast concrete beam used in the slab construction method of the present invention. Here, the reinforcing bars 13 are partially exposed on the upper surface of the half precast concrete beam 10. The seal member 12 has elasticity and is attached to the joining step portion 10a in the longitudinal direction. A double-sided adhesive tape 12a is attached to the bottom surface of the seal member 12. Therefore, it can be easily attached to the joining step portion 10a of the half precast concrete beam 10.

Next, a construction example using the slab construction method having the above construction will be described. First, the end portion of the half precast concrete slab plate 11 is also placed on the joining step portion 10 a of the half precast concrete beam 10. The joining step portion 10a includes a seal member 1 which is an elastic member.
2 is attached. It is possible to prevent the cement milk or the like from leaking out even if there is warping or unevenness of the plate at the joint.

FIG. 4 is a vertical sectional view showing a half precast concrete beam 15 used in another embodiment of the present invention. In the present embodiment, the seal member 17 has a substantially rectangular cross section and is partially embedded in the joint step portion 15 a of the half precast concrete beam 15. In this way, when manufacturing the seal member 17, the seal member (sliding) 17 can be attached at the same time. Therefore, it is possible to save the trouble of attaching the seal member afterward as in the first embodiment. FIG. 5 is a longitudinal sectional view showing a half precast concrete beam 16 used in another embodiment of the present invention. In the figure, a part of the base end is embedded in the joining step portion 16 a of the half precast concrete beam 16 and a sealing member 18 is arranged. Here, the seal member 18 is made of a rubber product such as a gasket, and has a substantially inverted U-shaped cross section. With this configuration, the seal member 18 is unlikely to come off.

[0010]

As described above, according to the slab construction method of the present invention, a slab construction for constructing a floor surface or a wall by constructing a half precast concrete slab board on a half precast concrete beam with partially exposed reinforcing bars. In the method, a sealing member is provided in the longitudinal direction of the joining step portion of the half precast concrete beam, the half precast concrete slab plate is placed through this sealing member, and the concrete is poured from above, so that the cast concrete is Does not leak from the joint. Therefore, the PC beam is not contaminated with the leaked concrete (slag) and no finishing process is required. Therefore, the construction period can be shortened. In addition, it is not necessary for the worker to separately install the cushioning member, which prevents danger and reduces costs.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing a slab construction method according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a half precast concrete beam used in the slab construction method of the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the seal member used in the slab construction method of the present invention.

FIG. 4 is a vertical cross-sectional view showing a half precast concrete beam used in the slab construction method of the present invention.

FIG. 5 is a vertical sectional view showing another embodiment of the half precast concrete beam used in the slab construction method of the present invention.

FIG. 6 is a vertical sectional view showing an example of a conventional slab construction method.

[Explanation of symbols]

 10 Half precast concrete beam 10a Joint step 11 Half precast concrete slab board 12 Seal member 13 Reinforcing bar 15,16 Half precast concrete beam 17,18 Seal member

Claims (1)

[Claims] 1. In a slab construction method for constructing a floor surface or a wall by constructing a half precast concrete slab plate on a half precast concrete beam with a partially exposed reinforcing bar, in the longitudinal direction of the joint step of the half precast concrete beam. A slab construction method characterized in that a seal member is provided on the slab, a half precast concrete slab plate is placed through the seal member, and concrete is poured from the top.