JPH0751534Y2 - Floor slab with concrete dam - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor slab with a concrete separating weir for dividing and placing concrete for pillars and beams and concrete for slabs.

[0002]

While it is necessary to use high-strength concrete for columns and beams that are seismic members, it is structurally sufficient to use lower-strength concrete for slabs. Regardless, it has been difficult to separate the concrete of both due to construction in the past, so the concrete is placed on the slab at the same time as the pillars and beams, and the concrete that is stronger than necessary is actually used. is there.

The use of unnecessarily high-strength concrete not only causes an increase in material cost, but also increases workability due to an increase in the amount of cement, resulting in much labor for leveling and finishing the floor surface.

This invention was made in consideration of the actual situation of the conventional concrete pouring method, and it is intended to newly propose a floor slab capable of pouring by dividing the concrete of the slab with the concrete of the pillars and beams. Is.

[0005]

According to the present invention, a slab made of reinforced concrete is constructed, and a precast concrete floor slab that also serves as a formwork for the cast concrete is placed at the position of the boundary with the surrounding columns and beams. By standing upright and projecting, the concrete of columns and beams and the concrete of slabs are divided, and the concrete of the required strength is divided and placed to reduce the material cost and improve the workability.

By separating the concrete cast into the columns and beams from the concrete of the slab by the weir plate, the high strength concrete and the lower strength concrete are separated, and the slab also has the required strength. As a result, the amount of cement in the slab concrete is reduced, the cost is reduced, and at the same time, the workability is increased and the workability of the slab is enhanced.

The weir board is a board manufactured by embedding a mesh board in the floor slab, or by placing it on the floor slab, or continuously starting it as a part of the floor slab, or separating it from the floor slab. It is formed by placing it on the floor slab.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing an embodiment.

A floor slab 1 with a weir for concrete casting according to the present invention (hereinafter referred to as a floor slab) has a weir 1a standing upright around its periphery, and it is cast on columns and beams by the weir 1a. The concrete is divided into concrete and slab concrete, and both concretes are cast separately.
The floor slab 1 is made of precast concrete in which the lower main reinforcement of the slab is buried, and is placed on the beam form 4 and the column form 5 as shown in FIGS. In the embodiment, in addition to the lower end main bar, it is integrated with this to support the upper end main bar 2 and at the same time,
The lattice reinforcements 3 that secure the integrity with the cast concrete are buried.

The weir 1a is a floor slab 1 as shown in FIGS.
It will be projected around the boundary of the columns and beams around the.

FIG. 1 shows an embodiment in which a mesh plate is used as the weir plate 1a, which is embedded in the floor slab 1 to project the weir plate 1a. Expanded metal, punching metal, or metal lath is used for the mesh plate.

As shown in FIG. 2, the weir plate 1a is arranged on the periphery of the floor slab 1 facing the columns and beams, and the lower end is embedded in the floor slab 1 and stands upright as shown in FIG. Also in this case, the weir
Since 1a has no rigidity, it is bent and arranged in a folded plate shape on a plane as shown in FIG.

In this embodiment, the integrity of the concrete of the slab and the concrete of the pillar or the beam is ensured by the leaching from the eyes of the weir board 1a of the concrete which is cast in advance and then hardening in the uneven shape as it is. To be done.

FIGS. 3 and 4 show that a mesh plate serving as a weir plate 1a straddles a beam form 4, and as shown in FIG. 5, a joint bar 6 which is lap jointed with an upper main bar 2 of each floor slab 1 is penetrated. This is an example of a case in which the weir board 1a is attached to the floor slab 1
This is the case when it is simply placed on top and projected.

FIG. 6 shows an embodiment in which a plate of the same quality as the floor slab 1 is provided so as to project on the upper surface of the floor slab 1 to form the weir plate 1a.

In this embodiment, the weir board 1a is integrally formed on the upper surface side of the floor slab 1 when the floor slab 1 is manufactured as shown in FIG. 6, and is also separated from the embodiment shown in FIG. 3 after being precast. It is placed and projected on the floor slab 1 in the same manner.

As shown in FIGS. 8 and 9, the splice 6 is a weir plate.
A cotter 1c that is arranged in a notch 1b cut from the upper side of 1a and has concave or convex shapes on both sides of the weir board 1a in order to secure the integrity of the concrete of the slab and the concrete of columns and beams. Is formed.

[0018]

[Effect of the Invention] This invention is as described above, and it is located at the position of the boundary with the surrounding columns and beams of the slab made of precast concrete that constitutes the slab made of reinforced concrete and doubles as the formwork of the cast concrete Since weirs are erected to stand upright and concrete for pillars and beams and concrete for slabs are separated, concrete of required strength can be separately placed and placed, aiming to reduce material costs. At the same time, the workability of the concrete of the slab can be enhanced, so that the workability of the slab can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment in the case of forming a weir board with a mesh board.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical cross-sectional view showing an embodiment in the case where a joint bar is attached to a weir board.

FIG. 4 is a plan view of FIG.

FIG. 5 is a perspective view showing an example of manufacturing the weir plate of the embodiment shown in FIG.

FIG. 6 is a vertical cross-sectional view showing an embodiment in the case where the weir board is integrally formed with the floor slab.

FIG. 7 is a plan view of FIG.

FIG. 8 is a perspective view showing a floor slab of the embodiment shown in FIG.

9 is a vertical cross-sectional view of FIG.

[Explanation of symbols]

1 ... Floor slab, 1a ... Weir, 1b ... Notch, 1c ... Cotter, 2 ... Upper main bar , 3 ... Lattice bar , 4 ... Beam form, 5 ... Pillar form, 6 ...... Joint line.

Claims (3)

[Scope of utility model registration request] 1. A slab made of reinforced concrete is constructed,
It is a slab made of precast concrete that has a weir for separating concrete between pillars / beams and slabs around it. A floor slab with a concrete separating weir, characterized in that the separating weir is standing upright and protruding. 2. The weir board for concrete casting according to claim 1, wherein the weir board is a mesh board, and the weir board is embedded in the floor slab or is projected on the floor slab. With floor version. 3. The floor slab with a concrete separating weir according to claim 1, wherein the weir is continuously provided from the upper surface of the floor slab or is projected on the upper surface.