CN106836600A - A kind of reinforcing bar composite floor for power transformation engineering - Google Patents

Abstract

The invention discloses a steel bar composite floor slab used in a power transformation project, which comprises a plane-pressed galvanized steel plate made of steel, a truss welded by steel bars and concrete, and the truss is welded on a plane-pressed galvanized steel plate. And it is formed by laying distributed steel bars on the truss and pouring concrete. The invention has the advantages of simple structure, industrial processing, modular installation, short construction period, light weight, material saving, and increased structure anti-seismic performance, which shortens the construction period for the project to be completed and put into production, and improves the economic benefits of the enterprise.

Description

A steel bar composite floor slab for power substation engineering

technical field

The invention relates to a load-bearing floor slab for a substation project, in particular to a steel bar composite floor slab for a substation project, which is mainly used in a substation project, a step-up station and other substation projects.

Background technique

The conventional substation project is a reinforced concrete structure, which requires on-site construction, and the construction speed is slow, which affects the construction period and commissioning time of the substation project. Later, the State Grid Corporation proposed the "fabricated substation project" to reduce on-site construction operations. , Some or most of the components of the substation project will be completed in the factory, and transported to the site for direct installation. Therefore, the prefabricated substation project is mainly composed of steel structures, and each component is connected by bolts, so the construction speed is relatively fast.

Compared with concrete structures, steel structures have advantages in terms of use function, material performance, stress characteristics, design, construction technology and construction period, environmental protection and energy saving, and comprehensive economy. However, the design and construction of steel structures in power substation projects is only the initial stage. In the process of designing and building substation projects, we will encounter many difficulties and problems, which need to be solved and improved to promote the promotion and application of prefabricated substation projects nationwide.

Reinforced concrete floor slabs have always been used in substation engineering floors. Ordinary reinforced reinforced concrete floor slabs are the most commonly used floor slabs in structural design, and are also the most familiar structural form for design and construction personnel. Some of its main advantages are: a. The construction technology is mature, the material is convenient to obtain, and the application range is wide. b. The overall rigidity of the plane is larger, and the seismic performance is better. c. Work together with the steel beam to form a composite beam, which can reduce the height of the beam section. d. It is not restricted by the shape of the room, it is convenient to open the room, and it is convenient for the vertical laying of equipment and pipelines. However, for a building with a regular structure, a long span, and few floors, such as a power substation project, these advantages are not advantages. On the contrary, there are several disadvantages of ordinary concrete floor slabs: a. Larger self-weight, many wet operations on site, and messy site; b. .Traditional formwork support system is required, which hinders the lower traffic, and it is cumbersome to set up and remove the formwork; c. After the concrete pouring is completed, it cannot provide conditions for follow-up work in time, which is a disadvantageous factor for building structures such as power substation projects. In response to the above problems, we have developed a new structural form of the floor slab, the steel bar composite floor.

Contents of the invention

The object of the present invention is to provide a steel bar composite floor slab for a substation project, so as to solve the above-mentioned technical problems.

To achieve the above object, the present invention adopts the following design scheme:

A steel bar composite floor slab for power substation engineering, including flat profiled galvanized steel plates made of steel, trusses welded by steel bars and concrete, the trusses are welded on the plane profiled galvanized steel plates, and on the trusses It is formed by laying distributed steel bars and pouring concrete.

The truss is welded by web reinforcement, upper chord reinforcement and lower chord reinforcement. The web reinforcement is welded on the flat pressed galvanized steel plate. The upper chord reinforcement and lower chord reinforcement are respectively welded to the upper and lower parts of the web reinforcement. the top of.

The specifications of the web bar reinforcement are: Φ4～Φ6 HRB400 steel bars, the upper chord steel bars are Φ6～Φ14 HRB400 steel bars, the lower chord steel bars are Φ6～Φ14 HRB400 steel bars, and the distribution steel bars are Φ8HRB400 steel bars.

The invention has the advantages of simple structure, industrial processing, modular installation, short construction period, light weight, material saving, increased structure anti-seismic performance, shortens the construction period for the project to be completed and put into operation, and improves the economic benefits of the enterprise.

Description of drawings

Figure 1 is a schematic cross-sectional view of the present invention.

Fig. 2 is a schematic longitudinal sectional view of the present invention.

In the figure: 1. Web reinforcement; 2. Upper chord reinforcement; 3. Lower chord reinforcement; 4. Distributed reinforcement; 5. Concrete; 6. Plane-pressed galvanized steel.

detailed description

The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-2, a reinforced steel composite floor slab for power substation engineering includes a flat-pressed galvanized steel plate 6 made of steel, a truss welded by steel bars and concrete 5, and the truss is welded on a flat pressed Type galvanized steel plate 6, and the distributed steel bars 4 are laid on the truss and concrete 5 is poured.

The truss is welded by web bar 1, upper chord bar 2, and lower chord bar 3. The web bar 1 is welded on the flat pressed galvanized steel plate 6. The upper chord bar 2 and the lower chord bar 3 are welded to the upper and lower parts of the web bar 1 respectively. , the distributed reinforcement 4 is welded on the top of the web reinforcement 1; the specifications of the web reinforcement 1 are: Φ4～Φ6 HRB400 steel bars, the specifications of the top chord reinforcement 2 are: Φ6～Φ14 HRB400 reinforcement, and the specifications of the bottom chord reinforcement 3 are: Φ6～Φ14 HRB400 grade steel bars, the specification requirements for distributed steel bars 4 are: Φ8 HRB400 grade steel bars.

Processing and production process: First, use steel to make flat galvanized steel sheets, and at the same time use web steel bars, upper chord steel bars, and lower chord steel bars to prefabricate steel trusses in the factory, and then directly weld the prefabricated steel bar trusses on the flat galvanized steel sheets, and Distributed steel bars are laid; welded composite steel plates are used instead of traditional wooden formwork to be directly laid on steel beams as permanent formwork; finally concrete is poured and waits for the concrete to harden to finally form a reinforced composite floor; its factory processing, modular installation, The construction period is short; the self-weight is light, the material is saved, and the seismic performance of the structure is increased, which shortens the construction period for the project to be completed and put into operation, and improves the economic benefits of the enterprise.

The embodiments described above are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Claims (3)

1. a kind of reinforcing bar composite floor for power transformation engineering, it is characterised in that including the plane die mould plating being fabricated to by steel Zinc steel plate, truss and concrete by reinforcement welding, truss welding on plane die mould galvanized steel plain sheet, and on truss It is laid with distribution bar and casting concrete is formed.

2. a kind of reinforcing bar composite floor for power transformation engineering according to claim 1, it is characterised in that truss is by web member Reinforcing bar, the reinforcing bar that winds up, lower edge reinforcement welding are formed, web member reinforcement welding on plane die mould galvanized steel plain sheet, wind up reinforcing bar and under String reinforcing bar is respectively welded at web member reinforcing bar top and bottom, and distribution bar is welded on the top of web member reinforcing bar.

3. a kind of reinforcing bar composite floor for power transformation engineering according to claim 1, it is characterised in that web member reinforcing bar is advised Lattice are required：6HRB400 grades of reinforcing bar of 4~Φ of Φ, bar gauge of winding up requirement be：The HRB400 grades of reinforcing bar of 6~Φ of Φ 14, lower edge Bar gauge is required：The HRB400 grades of reinforcing bar of 6~Φ of Φ 14, distribution bar specification requirement is：The HRB400 grades of reinforcing bar of Φ 8.