CN206189657U - Assembled steel sheet net outsourcing concrete shear wall structure based on pre -fabricated steel frame - Google Patents

Abstract

The utility model discloses an assembled steel plate mesh-wrapped concrete shear wall structure based on a prefabricated steel structure, which includes a plurality of single structural units spliced by bolts; the single structural unit includes box-shaped columns, H-shaped steel Beams, expanded metal, and expanded metal lugs; the two expanded metals are arranged in an X-shaped intersection, and the two ends of the expanded metal are welded to the expanded metal lugs; box-shaped columns are welded on the four sides of the box-shaped column Ear plate, the ear plate of the box-shaped column is tightly connected with the ear plate of the expanded metal mesh through bolts; the ear plate of the H-shaped steel beam is welded on the H-shaped steel beam, and the ear plate of the H-shaped steel beam is connected with the ear plate of the expanded metal mesh through bolts Fastened connection: the box-shaped column and the H-shaped steel beam are fastened and connected by bolts. The utility model adopts a cross structure, which has low cost, light weight and good shear resistance; the concrete shear wall structure of the utility model can be widely used.

Description

Prefabricated steel mesh-wrapped concrete shear wall structure based on prefabricated steel structure

technical field

The utility model belongs to the technical field of structural engineering steel and concrete composite structures, in particular to an assembled steel plate net-wrapped concrete shear wall structure based on a prefabricated steel structure.

Background technique

my country is an earthquake-prone country, and different regions have different requirements for the seismic fortification of houses. In earthquake zones such as Sichuan and Tibet, the fortification intensity of houses is higher. As one of the important structural anti-seismic components, shear walls play a key role in earthquakes. The shear wall has the characteristics of large lateral rigidity, small lateral displacement, large self-weight, and large seismic energy absorption. However, the ductility of concrete shear walls is poor, and brittle failure is prone to occur, which has a certain impact on seismic fortification.

The steel concrete structure is wrapped with a layer of reinforced concrete shell outside the steel structure. This structure has been widely used in high-rise buildings and long-span construction engineering transfer floors. With the continuous advancement of science and technology and the development of my country's economy, The steel concrete structure will continue to be popularized and applied as a new type of structure. Due to the addition of steel skeleton in reinforced concrete, this structure has the dual advantages of steel structure and concrete structure. The steel concrete design is not limited by the steel content, and has high rigidity and bearing capacity. The bearing capacity of steel concrete structure members can be more than double that of reinforced concrete members of the same size. Therefore, for high-rise buildings, the member cross section can be reduced, that is, the usable area and floor height can be increased, and its economic benefits are significant. The cross-sectional area of the section steel member is small. For buildings, the span can be increased, the usable area and the floor height can be increased, and its economic benefits are considerable. The ductility of the reinforced concrete beam structure is much higher than that of the reinforced concrete structure, so it has excellent seismic performance, enhanced rigidity, and enhanced yield resistance. Steel concrete beam-column high-rise buildings can continue to construct the upper floors without waiting for the concrete to reach a certain strength, which effectively shortens the construction period of the construction project, that is, saves the construction cost.

The steel concrete shear wall makes up for the shortcomings of the concrete shear wall very well. Compared with reinforced concrete members, steel-reinforced soil members have the characteristics of large bearing capacity, good ductility and strong earthquake resistance. The inserted steel plate can constrain the concrete, and the concrete can also prevent the steel plate from destabilizing. The two work in harmony, so that the shear wall plays a greater role in earthquake resistance. However, at present, some steel reinforced concrete shear walls cannot be widely promoted because of the heavy weight and high cost, and the difficulty of concrete pouring with membrane support on site.

Utility model content

In order to solve the above problems, the utility model designs a prefabricated steel structure-based concrete shear wall structure surrounded by steel mesh.

The technical scheme that the utility model adopts is:

An assembled steel mesh-wrapped concrete shear wall structure based on a prefabricated steel structure, including a plurality of single structural units spliced by bolts; the single structural unit includes box columns, H-shaped steel beams, steel mesh , expanded metal lugs; the two expanded metals adopt an X-shaped cross arrangement, and the two ends of the expanded metal are welded to the expanded metal lugs; the four sides of the box-shaped column are welded with box-shaped column lugs, the The lug plate of the box-shaped column is tightly connected with the lug plate of the steel mesh through bolts; the lug plate of the H-shaped steel beam is welded on the H-shaped steel beam, and the lug plate of the H-shaped steel beam is fastened with the lug plate of the steel mesh through bolts; The box-shaped column and the H-shaped steel beam are fastened and connected by bolts.

The ear plate of the box-shaped column is fastened to the ear plate of the H-shaped steel beam through bolts.

Combine the expanded metal and the expanded metal lugs and then pour concrete to form an integrated structure.

The utility model has the advantages of:

The utility model adopts a cross structure, low cost, light weight, factory processing, on-site assembly, flexible use, convenient installation, and greatly improved construction period. The concrete shear wall structure of the utility model can be widely used.

Description of drawings

Fig. 1 is the overall structural diagram of the utility model;

Fig. 2 is the schematic diagram of expanded metal mesh of the present utility model;

Fig. 3 is a schematic diagram of welded ear plates on four sides of the expanded metal mesh of the present invention;

Fig. 4-1 is the front view of the box-shaped column of the present utility model;

Figure 4-2 is a box-shaped column cross-sectional view of the utility model;

Fig. 5-1 is the front view of the H-shaped steel beam of the present utility model;

Fig. 5-2 is the sectional view of the H-shaped steel beam of the present utility model;

Fig. 6 is a schematic diagram of the concrete shear wall of the present invention.

Specific implementation method

Below in conjunction with embodiment and accompanying drawing, this patent is described further.

As shown in Figure 1-6; a fabricated steel mesh-wrapped concrete shear wall structure based on prefabricated steel structure, including multiple single structural units spliced by bolts;

The single structural unit includes a box column 1, an H-shaped steel beam 2, an expanded metal mesh 3, and an expanded metal mesh ear plate 4;

The two expanded metals 3 are arranged in an X-shaped cross, and the two ends of the expanded metal 3 are welded to the lugs 4 of the expanded metal;

Box-shaped column lugs 5 are welded on the four sides of the box-shaped column 1, and the box-shaped column lugs 5 are fastened to the expanded metal lugs 4 through bolts;

The H-shaped steel beam 2 is welded with an H-shaped steel beam ear plate 6, and the H-shaped steel beam ear plate 6 is fastened to the steel plate mesh ear plate 4 through bolts;

The box-shaped column 1 and the H-shaped steel beam 2 are fastened and connected by bolts.

The box-shaped column ear plate 5 is fastened to the H-shaped steel beam ear plate 6 through bolts.

Combine the box-shaped column 1, the H-shaped steel beam 2, the steel mesh 3, and the steel mesh ear plate 4, and then pour concrete to form an integrated structure.

The production method adopted in this law is as follows:

1) Process the steel mesh in the factory and weld the steel strips into a mesh; because the main force direction of the shear wall is in the 45° principal stress direction, the steel strips are arranged in an X shape; there are steel strips around the edges of the steel mesh Weld the L-shaped ear plate; through the ear plate with bolt holes, the shear wall and the beam column are rigidly fastened and connected; and the rigidity of the steel mesh can be enhanced; after the steel mesh is made, concrete is poured to form a shear wall, such as Figure 6 shows.

2) Make square steel pipe concrete columns, make frame columns, and use box-shaped columns. The steel-reinforced concrete shear wall is prefabricated and needs to be connected to the column through lug bolts. Weld two layers of ear plates at the corresponding positions where the side of the column is connected to the shear wall, and the ear plates of the shear wall can be inserted into it, as shown in Figure 4-1, where the front view of the column is shown, and Figure 4-2 is a schematic cross-sectional view of the column.

3) Make frame H-shaped steel beams, weld double-layer lugs at the connection position between the upper and lower flanges of the beam and the shear wall, and the shear wall lugs can be inserted into it for bolt fixing. The form is shown in Figure 5-1 as the beam front view, and 5-2 is a schematic diagram of the beam section.

4) The shear walls, columns and beams are connected by inserting the lug plates and fixing them with bolts, and finally the exposed parts of the lug plates are connected to be filled with concrete.

In order to solve the problem of difficult construction of steel-reinforced concrete shear walls, this patent processes the inserted steel mesh concrete shear walls into finished products in the factory as prefabricated shear walls, and only needs to fix them with ear plates, columns and beams at the construction site That's it. Figure 2 is the front view of the expanded metal mesh, and the steel plate is welded into the form shown in Figure 2 according to the size of the shear wall in the factory. The four corners of the expanded metal mesh will weld all the steel plates in the form of Figure 2, and weld the ear plates in the form of Figure 3. The ear plate and the expanded metal can jointly bear the shear force and tensile force of the edge, and enhance the strength of the expanded metal. The same treatment is done on all sides of the expanded metal mesh. Formwork is supported on the finished steel mesh, and concrete is poured on the steel mesh. The form of concrete pouring is shown in Figure 6.

The specific construction and installation steps are as follows.

At the construction site, box columns are installed first. Then the wall is hoisted and installed, and when the wall is hoisted in place, the ear plate connectors on the column and the ear plate connectors on the wall are fixed with high-strength bolts in sequence with bolts. Finally, the wall lug plate connector and the lower beam lug plate connector are connected with high-strength bolts. After the wall connection is completed, the upper beam is also connected to the wall in the same way. Finally, add concrete to the exposed part of the ear plate. In this way, the beam-column wall becomes a whole, and the installation of the prefabricated shear wall is completed. Figure 1 shows a complete piece of assembled interpolated steel mesh shear wall structure.

Claims (3)

1. A prefabricated steel mesh outsourcing concrete shear wall structure based on prefabricated steel structure, characterized in that: Including multiple single structural units spliced by bolts; The single structural unit includes box columns, H-shaped steel beams, steel mesh, and steel mesh lugs; The two steel meshes are arranged in an X-shaped cross, and the two ends of the steel mesh are welded to the ear plates of the steel mesh; The box-shaped column lugs are welded on the four sides of the box-shaped column, and the box-shaped column lugs are tightly connected with the expanded metal mesh lugs through bolts; An H-shaped steel beam ear plate is welded on the H-shaped steel beam, and the H-shaped steel beam ear plate is tightly connected with the steel plate mesh ear plate through bolts; The box-shaped column and the H-shaped steel beam are fastened and connected by bolts. 2. A prefabricated steel structure-based prefabricated steel mesh-wrapped concrete shear wall structure according to claim 1, characterized in that: The ear plate of the box-shaped column is fastened to the ear plate of the H-shaped steel beam through bolts. 3. A kind of prefabricated steel structure based prefabricated steel structure outsourcing concrete shear wall structure according to claim 1, characterized in that: Combine the expanded metal and the expanded metal lugs and then pour concrete to form an integrated structure.