JPH0687518U - Synthetic slab - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a synthetic slab by increasing the prefabrication rate by integrating the floor reinforcement, floor formwork and beams. [Structure] A synthetic slab is provided with H-shaped steel beams 1 at intervals, a connecting beam 7 made of H-shaped steel is provided orthogonally to the H-shaped steel beams, and folded on the upper surface of the H-shaped steel beams. A plate-made permanent formwork 2 is attached, and a large number of stud bolts 3 are projected on the permanent formwork to attach a floor reinforcing bar support member 4 to the top of the permanent bar frame. A large-sized panel, which is attached with, is laid on the girder A, and concrete 9 is placed on the permanent formwork.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a composite slab that has an increased prefabricated rate by integrating floor reinforcement, floor formwork and beams.

[0002]

[Prior Art and Problems to be Solved by the Invention]

 When constructing conventional reinforced concrete slabs, it is common to support the formwork by supporting work, and it is necessary to carry out the supporting work and the removal and demolding of the formwork after a considerable period of time. It takes a lot of work to arrange the bar.

In view of such a point, there is a construction method using a scrap frame and a scrap beam. However, in order to construct the scrap frame and the scrap beam over a large span, the number of small beams is increased due to the strength and the temporary material is also used. Not economical because it increases. In addition, there are cases in which thin-skin concrete plates are also used as a formwork, but there are problems that support work is required, the weight increases, and it is difficult to combine with other works. The production cost of the plate cannot be ignored.

[0004]

[Means for Solving the Problems]

 This device was devised to solve the above-mentioned conventional problems, and it has a rational structure with a higher prefabrication rate, improves workability and economic efficiency, and is a synthetic structure that enables the construction of large spans. The purpose is to provide slabs.

In the composite slab according to the present invention, however, lightweight H-shaped steel beams are arranged at a predetermined interval, and a connecting beam made of the lightweight H-shaped steel is orthogonal to the longitudinal direction of the lightweight H-shaped steel beams. A permanent plate form made of a folded plate is attached to the upper surface of the light-weight H-shaped steel beam, and a large number of stud bolts are projected on the permanent form frame to attach a floor reinforcement support member to the top. In this structure, a large-sized panel having slab reinforcements attached to the floor reinforcement support is laid on a large beam, and concrete is placed on the permanent formwork.

[0006]

【Example】

 FIG. 1 shows an embodiment of the present invention, and FIGS. 2 and 3 show the details of the essential parts of FIG. 1, respectively. Reference symbol A in the figure is a large beam of H-shaped steel or the like, 1 is a lightweight H-shaped steel beam, and 2 is a permanent formwork.

As shown in FIG. 1, a large number of lightweight H-shaped steel beams 1 are arranged in parallel with each other between the large beams A, A, and the upper surface of the lightweight H-shaped steel beam 1 is folded. A permanent formwork 2 consisting of a plate, for example a keystone plate, is attached.

As shown in FIGS. 2 and 3, a large number of stud bolts 3 are fixedly welded to and protrude from the upper surface of the permanent mold 2 at predetermined intervals. The floor reinforcements 4 are attached by welding or the like, and the slab reinforcements 5 made of welded wire mesh or the like are attached by spot welding on the floor reinforcements 4.

Further, in the direction orthogonal to the longitudinal direction of the lightweight H-shaped steel beams 1 arranged at the predetermined intervals, the connecting beams 6 and 7 made of lightweight H-shaped steel or the like are connected by welding or bolts. The connecting beam 6 also serves as a lateral buckling stop for the lightweight H-shaped steel beam 1. Further, the connecting beam 7 attached to the surface of the mouth of the lightweight H-shaped steel beam 1 prevents the concrete 9 to be placed later from leaking out.

[0010] Next, as an example of construction, a large panel having the above configuration is produced in a factory, laid on the girders A, A on site, and after positioning, the stud bolt 8 is installed. The connecting beam 7 and the girder A are connected by welding and fixing them on the girder A, and finally the floor concrete 9 is placed.

After the concrete is hardened, the lightweight H-shaped steel beam 1 and the concrete 9 exert strength as a structurally integrated composite beam by the stud bolt 3 (8).

[0012]

[Effects of the Invention] (1) Regarding the installation between the large beams, the reinforcement and the permanent formwork of the slab are integrated through the stud bolts to form a large span, so the rigidity is high, and the installation work is safe and quick. It can be carried out.

(2) Since a lightweight H-shaped steel beam, a connecting beam and a permanent formwork of a folded plate are combined to have a large span, the load during concrete construction is reasonably received and a large span can be achieved by using a synthetic slab. Installation is possible.

(3) Compared with the case where an Omnia plate or other PC plate is used as a formwork, a lightweight H-section steel is used for the beam connecting beam, which makes it easier to handle and has a higher work efficiency. Since it can be prefabricated including the lines, the man-hours and construction period are shortened, which is economical.

(4) Since each member is made into a large-sized panel at the factory, no support is required regardless of the floor height, and site management is easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a transverse sectional view in a direction orthogonal to the lightweight H-section steel.

FIG. 3 is a cross-sectional view in a direction parallel to the lightweight H-shaped steel beam.

FIG. 4 is a partially enlarged view of FIG.

[Explanation of symbols]

1 ... Lightweight H-shaped steel beam, 2 ... Permanent formwork, 3 ... Stud bolt, 4 ... Floor reinforcement receiving material, 5 ... Slab reinforcement, 6, 7 ... Connecting beam, 8 ... Stud bolt, 9 ... Concrete A ... Large beam

Front page continuation (72) Hiroaki Kuno Inventor Hiroaki Kuno 4-51 Otamachi, Naka-ku, Yokohama Kanagawa Construction Co., Ltd.Yokohama Branch Co., Ltd. (72) Inventor, Junichi Kashima, 4-51 Otamachi, Naka-ku, Yokohama Established in Yokohama Branch (72) Inventor Sadao Kondo 4-51 Ota-machi, Naka-ku, Yokohama, Kanagawa Kashima Construction Incorporated Yokohama Branch (72) Hideaki Takada 4-51 Ota-cho, Naka-ku, Yokohama, Kanagawa Kashima Construction Co., Ltd., Yokohama Branch (72) Inventor Shigeo Moriuchi 6-11-105 Deno, Kawasaki-ku, Kawasaki-shi, Kanagawa

Claims (1)

[Scope of utility model registration request] 1. A lightweight H-section steel beam is arranged at predetermined intervals, and a connecting beam is arranged from the lightweight H-section steel beam at right angles to the longitudinal direction of the lightweight H-section steel beam. The permanent formwork made of a folded plate is attached to the upper surface of the slab, and a large number of stud bolts are projected on the permanent formwork to attach the floor reinforcement to the top of the slab reinforcement. A synthetic slab characterized in that a large-sized panel having the above-mentioned is attached to a large beam, and concrete is placed on the permanent formwork.