CN101435237A - Novel hollow combined board - Google Patents

Abstract

The invention discloses a novel hollow composite slab, which comprises a flat steel plate, a plurality of holed steel plates, and a plurality of steel pipes, the holed steel plates are parallel and are vertically welded on one plane of the flat steel plate, the plurality of steel pipes respectively pass through corresponding round holes of the holed steel plate and are welded with the round holes, the flat steel plate, the plurality of holed steel plate, and the plurality of steel pipes combine into a hollow slab support, and the hollow slab support is poured with light aggregate concrete to finally form the steel plate-light aggregate concrete hollow composite slab. The novel hollow composite slab of the invention has light weight, convenient construction, higher strength and rigidity, and better bearing performance, can be widely applied to the bridge slabs of new bridges and house buildings, the basement top board or room floor, and can be also applied to the bridge slab replace and maintenance engineering.

Description

A new type of hollow composite board

technical field

The invention relates to the field of civil engineering, in particular to a hollow composite plate.

Background technique

The composite panels used in civil engineering are generally steel plate-concrete composite panels or hollow panels. Steel plate-concrete composite slab refers to pouring concrete directly on the steel plate, and then through certain measures to make the two closely combined to form a floor or bridge deck that works together. The composite slab does not need formwork and temporary support in the construction project, and the construction is very It is convenient, but the self-weight of the steel plate-concrete composite slab is too large, so it is not suitable for bridge decks and floor slabs with large spans. In engineering practice, in order to reduce the self-weight of bridge decks and floors, hollow slabs are often used, but the strength and mechanical performance of hollow slabs are poor.

Contents of the invention

The purpose of the present invention is to provide a novel hollow composite panel with light weight but better strength and stress performance.

The technical solution of the present invention is as follows: a novel hollow composite plate, comprising a flat steel plate, a plurality of perforated steel plates and a plurality of steel pipes, each of the perforated steel plates is vertically welded on one side plane of the above-mentioned flat steel plate in parallel , the above-mentioned plurality of steel pipes respectively pass through the corresponding round holes of the above-mentioned perforated steel plates, and the above-mentioned plurality of steel pipes are respectively welded together with the respective corresponding round holes of the above-mentioned perforated steel plates, the above-mentioned flat steel plate, the plurality of perforated steel plates Combined with a plurality of steel pipes to form a hollow slab support, the hollow slab support is poured with lightweight aggregate concrete.

The above-mentioned lightweight aggregate concrete is a kind of concrete formed by using ceramsite as aggregate.

After adopting the above scheme, the novel hollow composite panel of the present invention is firstly welded with a flat steel plate, a plurality of perforated steel plates and a plurality of steel pipes to form a hollow plate support, and then pouring light aggregate concrete on the hollow plate support to form a steel plate - Lightweight aggregate concrete hollow composite slab.

The novel hollow composite plate of the present invention has the following beneficial effects:

1. Lightweight aggregate concrete is a kind of concrete formed by using ceramsite as aggregate. Compared with ordinary concrete, it has a lighter density. It can greatly reduce the self-weight of the structure in engineering structures, especially for large spans. The application advantages of bridge deck and floor slab are obvious. The composite slab of the present invention adopting lightweight aggregate concrete has very light dead weight, and compared with ordinary reinforced concrete solid slabs, the dead weight can be reduced by more than 45%, and the thicker the board, the greater the dead weight reduction.

2. Since the welded open-hole steel plate is arranged in the whole length, and the steel pipe is used at the same time, the rigidity and strength of the combined plate can be effectively improved, and the mechanical performance is better.

3. The flat steel plate can act as a template, and it has great rigidity after being welded with the perforated steel plate. Therefore, there is no need to erect temporary supports, and the construction is convenient;

4. Most of the production process of the composite panel of the present invention can be prefabricated in the factory, therefore, the production quality can be well guaranteed, and the construction period can be greatly shortened, which has significant advantages, especially for bridge repair and maintenance projects;

5. Due to light weight, high rigidity and high strength, the composite slab has considerable application prospects in projects such as long-span bridge decks, large-bay floor slabs, and basement roofs;

6. Under the premise of reasonable design, the composite plate of the present invention can be designed as an orthogonal two-way isotropic plate, which can more effectively improve the bearing capacity;

7. The hollow composite plate of the present invention has a good advantage in the reinforcement and maintenance of old bridges. By replacing the bridge deck, the load on the lower structure can be greatly reduced, which is equivalent to improving the bearing capacity of the old bridge;

8. The fire resistance of lightweight aggregate concrete is higher than that of ordinary concrete, and has good fire resistance, which has great advantages in housing construction;

9. The hollow composite plate of the present invention combines steel plates, steel pipes and lightweight aggregate concrete into one body, has better impact load resistance, and is suitable for underground protection projects;

10. Prestressing can also be conveniently applied to the steel pipe to form a prestressed steel plate-light aggregate concrete hollow composite slab.

Description of drawings

Fig. 1 is the front view of the present invention.

Fig. 2 is a left view of the present invention.

FIG. 3 is a sectional view along line A-A of FIG. 1 .

Fig. 4 is a B-B sectional view of Fig. 2 .

Fig. 5 is a schematic structural view of the hollow-core plate support of the present invention.

Detailed ways

A novel hollow composite plate of the present invention, as shown in Figures 1, 2, 3, 4, and 5, includes a flat steel plate 1, a plurality of perforated steel plates 2 and a plurality of steel pipes 3, and each perforated steel plate 2 is parallel to each other. Vertically welded on one side plane of the flat steel plate 1, a plurality of steel pipes 3 respectively pass through the corresponding round holes of each perforated steel plate 2, and the steel pipes 3 are welded together with each corresponding round hole of each perforated steel plate 2, In this way, the flat steel plate 1, a plurality of perforated steel plates 2 and a plurality of steel pipes 3 are welded together to form a hollow plate support 4, and the hollow plate support 4 is poured with lightweight aggregate concrete 5, finally forming a steel plate-light aggregate concrete hollow combination plate. Lightweight aggregate concrete 5 is a kind of concrete formed by using ceramsite as aggregate.

During processing, first weld the perforated steel plate 2 on the flat steel plate 1, then respectively penetrate the steel pipe 3 into the corresponding round holes in each perforated steel plate 2, and weld tightly to form the hollow plate support 4, and then go to the hollow plate support 4 Lightweight aggregate concrete 5 is poured on top to form a steel plate-lightweight aggregate concrete hollow composite plate suitable for bridge decks or floor slabs. According to actual needs, the thickness of the flat steel plate and the perforated steel plate, the distance between each perforated steel plate, the diameter of the round hole of the perforated steel plate, the distance between each round hole and the thickness of the combined plate are determined through calculation and analysis. During work: weld the steel plate-lightweight aggregate concrete hollow composite slab to the steel beam to form a steel-concrete composite beam with a hollow composite slab, and the steel plate-lightweight aggregate concrete hollow composite slab bears the bridge deck load or floor load.

Claims (2)

1, a kind of novel hollow combined board, it is characterized in that: comprise plain plate, plural piece perforate steel plate and complex root steel pipe, above-mentioned each perforate steel plate is erect respectively with paralleling and is welded on the side plane of above-mentioned plain plate, above-mentioned complex root steel pipe is through at respectively in each corresponding circular hole of above-mentioned each perforate steel plate, and above-mentioned complex root steel pipe is connected together with each corresponding circle eyelet welding of above-mentioned each perforate steel plate respectively, above-mentioned plain plate, plural piece perforate steel plate and complex root steel pipe are synthesized a hollowcore slab support, are cast with light weight aggregate concrete on this hollowcore slab support.

2, a kind of novel hollow combined board according to claim 1 is characterized in that: above-mentioned light weight aggregate concrete is to adopt haydite as the formed a kind of concrete of aggregate.

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