JPH05340015A - Concrete floor structure - Google Patents

Abstract

PURPOSE:To reduce cost, weight of a construction and construction period in constructing a relatively large synthetic floor using PC boards in floor structure for constructing a slab with a relatively large floor area made of reinforced concrete. CONSTITUTION:PC boards 5 in which locking steps 7 are provided at both ends of the PC board body are arranged side by side at an interval 4 between beams 2 and 2 of a construction. Thin boards 6 for placing are placed in the intervals 4, and a concrete is placed on the upper faces of the PC boards 5 and the thin boards 6 for placing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure for constructing a slab made of reinforced concrete and having a relatively large floor area.

[0002]

2. Description of the Related Art Conventionally, to construct a slab, FIG.
As shown in (a) and (b), a precast concrete plate (hereinafter, simply referred to as a PC plate) 1 is formed, and the precast concrete plate 1 is provided between the beams 22 of the building in parallel, and the precast concrete plate is formed. Reinforcing bars were longitudinally and laterally arranged on the upper surface of the plate 1 via a supporting member such as a spacer, and concrete was poured by cast-in-place to construct a synthetic floor.

As shown in FIG. 11 (a), the PC board 1 is an elongated plate-like body and is provided with a plurality of through holes 3 penetrating in the longitudinal direction in order to reduce the weight and the span. ing. Although not shown, a plurality of PC steel wires are embedded in the precast concrete plate in a tensioned manner along the longitudinal direction.

[0004]

However, in the above-mentioned method for constructing a composite floor, since the PC boards 1 are closely arranged in parallel between the beams 2 and 2, the floors having a large area can be constructed. Since a large number of PC boards 1 are required, the cost increases,
Further, there is a drawback that it takes much time and labor to carry in and lay down the PC board 1. In addition, when the equipment pipes are installed under the floor, the effective ceiling height is reduced.

The present invention has been made in view of the above problems, and in constructing a relatively large synthetic floor using a PC board, the cost is reduced, the weight of the construct is reduced, and the construction period is shortened. The purpose of the present invention is to provide a concrete floor structure having a large effective ceiling height.

[0006]

The gist of the present invention for solving the above problems and achieving the above objects is to lock both ends of a precast concrete plate body, which is an elongated body, in the longitudinal direction. The precast concrete plates provided with a stepped portion are arranged side by side with a gap between the beams of the construction, and laying thin plates are locked to the locking stepped portions adjacent to each other in the gap. It lies in that a concrete composite floor is constructed by laying concrete on the upper surfaces of the precast concrete plate and the laying thin plate. Furthermore, the precast concrete plates provided with locking step portions along the longitudinal direction at both ends of the main body of the precast concrete plate which is an elongated plate-like body are arranged side by side with a gap between the beams of the construction. In the concrete floor structure, laying thin plates are laid in the gaps by being locked by the locking step portions adjacent to each other.

[0007]

According to the concrete floor structure of the present invention, a PC board is installed between beams with a predetermined gap, and a thin plate for laying is laid in the gap to complete the lower layer of the concrete floor structure. A concrete floor is completed by placing concrete on these lower layers to build the upper layers. Further, a concrete floor structure may be used without placing the concrete, and since it is not necessary to construct an upper layer, the construction period can be shortened and the cost can be reduced. In this way, the number of PC boards required to build a floor of the same area is smaller than before, and P
The time for laying the C plate is shortened. Further, since the plates laid in the gaps between the PC plates adjacent to each other are thin plates for laying, they are easy to handle and do not require much labor, and the laying work time thereof can be shortened. In addition, the equipment pipe is installed on the laying thin plate, so that the effective ceiling height becomes higher than in the past.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a PC board used in a concrete floor structure according to the present invention, and FIG. 2 is a perspective view showing a state in which a PC board and a laying thin plate are laid between beams. In the figure, reference numeral 5 is a PC board, 6 is a laying thin board, 7 is a locking step portion, 8
Is a through hole, 9 is a reinforcing bar, 10 is cast concrete, 11 is equipment piping, and 12 is lighting equipment. For ease of understanding, the parts corresponding to those in the conventional example are designated by the same reference numerals.

The concrete floor structure according to the present invention is a PC
A plate 5 is laid side by side with a gap 4 between the beams 2 and 2 of the structure, and an underfloor layer is formed by laying a laying thin plate 6 in this gap 4 to form the PC plate 5 and the laying thin plate. Concrete is placed on the upper surface of 6 to form an upper floor portion of the floor to form a concrete composite floor.

As shown in FIG. 1, the PC board 5 is formed of a slender plate-like body and has a predetermined length. The PC board 5 is locked at both ends of the body along the longitudinal direction of the body. Steps 7, 7
Is provided. And inside the main body,
In order to reduce the weight and increase the span of the PC board 5, a plurality of through holes 8 penetrating along the longitudinal direction are provided in parallel.

As shown in FIGS. 2 and 3, the laying thin plate 6 has a width corresponding to a gap width when the PC plates 5, 5 ... Are erected between the beams 2, 2. In this embodiment, the corrugated thin plate is made of metal. In addition to this, as the laying thin plate 6, a precast concrete plate, a wood wool cement plate, a wood fiber cement plate, a rock wool cement plate, etc. can be similarly adopted.

The underfloor layer portion 1 of the concrete floor structure
In order to form 3, the PC plates 5 are arranged side by side with a predetermined gap 4 between the beams 2 and 2 of the structure. Then, both edge portions of the metal thin plate 6 are locked to the locking step portions 7, 7 of the PC plates 5 and 5 adjacent to each other, and the thin plate 6 is laid. At the end of the PC board 5 on the beam 2, as shown in FIG.
Since the gap 4 between the adjacent PC plates 5 and 5 is opened on the lower side of the thin plate 6, the cover plate 6a is fitted to prevent the poured concrete from leaking to the lower floor.

As a result, as shown in FIG.
3 is formed. This underfloor layer 13 is a lightweight PC
Since the plates 5 are arranged in parallel between the beams 2 and 2 with a predetermined gap 4 without making them intimately contact with each other, it is possible to provide a relatively large area.
To build a concrete floor for a large parking lot as shown in P
The number of C plates 5 laid is about half of the conventional one, and PC
The work time for laying the plate 5 is greatly reduced.

When the underfloor layer portion 13 is thus formed as shown in FIG. 2 or 4, the reinforcing bars 9 are provided on the upper surfaces of the PC plate 5 and the metal thin plate 6 as shown in FIGS. Concrete 10 is placed on the underfloor layer portion 13 by arranging vertically and horizontally through spacers and stirrup upper end reinforcements. In addition, in FIG. 5B, the laying thin plate 6 is made of metal instead of P.
The case where a C plate or the like has the same plate thickness as the height of the locking step portion 7 is shown. Thus, the floor upper layer portion 14 is formed, and the concrete floor 1 is composed of the floor lower layer portion 13 and the floor upper layer portion 14.
5 is formed.

After that, the equipment pipe 11, the lighting equipment 12 and the like are arranged on the lower surface of the metal thin plate 6 by using a hanging piece as shown in FIGS. 6 to 7, so that a relatively large floor area is obtained. There is a construction.

8A and 8B show a state in which one end of the PC plate 5 on the beams 2 and 2a is installed, and the end of the PC plate 5 is placed on the upper surface of the beam 2 and the lid is closed. When the board 6a is used (a), the step is provided on the beam 2a, and the PC board 5 is provided there.
This is the case (1) where one end of is placed and installed. In this way, the PC board 5 with the cast-in-place concrete 10
And the beams 2 and 2a are integrated in terms of strength.

Although not shown, the PC board 5 is also provided.
When the laying thin plate 6 is a precast concrete plate or the like, it is also preferable to provide a large number of recesses on each surface so as to strengthen the integration with the concrete 10 to be cast.

In the above-mentioned one embodiment, concrete is poured to form the underfloor layer portion 13 and the floor-upper layer portion 14 into an integrated structure. However, as described in claim 2, it is laid with a gap 4. It is also possible to make a concrete floor structure composed of the PC plate 5 and the laying thin plate 6b made of precast concrete plate laid in the gap 4. This is shown in FIGS. 9 to 10. Further, when laying the laying thin plate 6b made of the precast concrete plate in the gap 4, it may be laid so that its longitudinal direction is orthogonal to the longitudinal direction of the PC plate 5, or laid in parallel. There are various variations.

The joining with the laying thin plate 6b at the locking step 7 of the PC plate 5 is carried out when the mortar 10a is filled or the anchor stirrup 6c is used together.

[0020]

As described above, in the concrete floor structure of the present invention, the PC boards having the locking stepped portions at both ends of the PC board main body are arranged side by side with a gap between the beams of the construction. In the floor structure, a thin plate for laying is laid in the gap, and concrete is placed on the upper surfaces of the PC plate and the thin plate for laying. Only the PC board is required, the time for laying the PC board is shortened, the construction period is shortened, and the cost is reduced. Further, since the laying thin plates are laid in the gaps between the PC plates adjacent to each other, the thin plates are easy to handle, the labor is not required, and the laying work time is shortened. Since the equipment pipe is installed on the laying thin plate, there is an advantage that the effective value of the ceiling height becomes large.

[0021] According to the second aspect, it is not necessary to pour concrete, so that the cost can be further reduced and the construction period can be shortened.

[Brief description of drawings]

FIG. 1 is a perspective view of a PC board used in a concrete floor structure according to the present invention.

FIG. 2 is a perspective view showing a state in which a PC plate and a laying thin plate are laid between the beams.

FIG. 3 is a partially enlarged perspective view of an end portion of a PC board that is also installed.

FIG. 4 is an explanatory diagram showing a case where it is implemented in a parking lot having a relatively large floor area.

5 (a) and 5 (b) are partial cross-sectional views of the concrete floor structure.

FIG. 6 is an explanatory diagram showing a state in which facility piping is arranged in a concrete floor structure.

FIG. 7 is an explanatory diagram of the case where the lighting equipment is also provided.

8A and 8B are explanatory views showing a erected state of an end portion of a PC plate on a beam.

FIG. 9 is a front view of an embodiment according to claim 2 of the present invention.

FIG. 10 is a perspective view of the same.

FIG. 11 is a perspective view (a) of a PC board of a concrete floor structure according to a conventional example, and a perspective view showing a state where a concrete floor is constructed using the PC board.

[Explanation of symbols]

5 PC board, 6 Laying thin plate, 7 Locking step, 8 Through hole, 9 Reinforcing bar, 10 Casting concrete, 11 Facility piping, 12 Lighting facility.

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[Procedure amendment]

[Submission date] July 30, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (2)

[Claims] 1. A precast concrete plate body, which is an elongated body as a whole, provided with locking steps along the longitudinal direction at both end portions of the precast concrete plate body with gaps between the beams of the structure. The laying thin plates are installed side by side in the gap and are laid down by being locked by the locking step portions that are adjacent to each other, and concrete is placed on the upper surfaces of the precast concrete plate and the laying thin plate. The characteristic concrete floor structure. 2. A precast concrete plate body, which is a whole elongated plate-shaped body, provided with step portions for locking along the longitudinal direction at both ends of the precast concrete plate body, and the precast concrete plate has gaps between the beams of the structure. A concrete floor structure, wherein the concrete floor structures are arranged in parallel, and the laying thin plates are laid in the gaps by being locked to the locking step portions adjacent to each other.