CN105696730A - Concrete-filled steel tube frame column-steel plate shear wall system and construction method - Google Patents

Abstract

The invention relates to a steel pipe concrete frame column-steel plate shear wall system and a construction method, comprising a frame column, a frame beam, an inner filling plate wall is arranged in the space surrounded by the frame column and the frame beam, and a steel pipe concrete frame column-steel plate shear wall The construction method of the force wall system includes the following steps: (1) positioning and installing the steel pipe of the steel pipe concrete frame column; (2) positioning the frame beam on the frame column; (3) prefabricating the inner filling wall, and the inner filling wall Slit by laser or set stiffeners on the inner filler wall or open a long opening on the inner filler wall, and weld the prefabricated inner filler wall with frame beams and steel pipe concrete frame columns; (4) Concrete is poured in the steel pipe concrete frame column to complete the component construction. The new shear wall of the present invention is simple in structure, reasonable in design, convenient in construction, and has the characteristics of superior seismic performance, high bearing capacity, and good ductility.

Description

Steel tube concrete frame column-steel plate shear wall system and construction method

technical field

The invention relates to a building structure anti-compression and anti-lateral force system and a construction method.

Background technique

Compared with steel structure, CFST column has good economical performance and fire resistance; compared with reinforced concrete structure, it has higher compressive bearing capacity and seismic performance. Therefore, this type of component has been widely used in multi-story frame structures. However, the rigidity of the frame structure is small, and in areas with large coastal wind loads, the CFST frame structure is prone to large side shifts. Steel plate shear walls have the advantages of high lateral stiffness; and compared with reinforced concrete shear walls, this type of structure has the characteristics of fast construction speed, short construction period and good seismic performance. Therefore, the CFST frame column-steel plate shear wall structure formed by the combination of the two is expected to have the above advantages at the same time, and the outer steel tube and the steel plate shear wall can be welded together conveniently. This type of combined shear wall structure can be used in high-rise and super high-rise building structures.

Contents of the invention

The purpose of the present invention is to provide a steel pipe concrete frame column-steel plate shear wall system and a construction method.

In order to solve the above technical problems, a technical solution of the present invention is a steel pipe concrete frame column-steel plate shear wall system, including a frame column, a frame beam, and an inner filling plate is arranged in the space surrounded by the frame column and the frame beam wall.

Further, the inner filler wall, frame column and frame beam are welded to each other.

Further, the frame column is a steel pipe concrete frame column.

Further, the cross section of the frame column is rectangular or circular.

Further, the frame beams are steel beams or steel concrete beams.

Further, the inner filling plate wall is a thin-walled steel plate, and arc-shaped openings are opened at the four diagonal corners of the inner filling plate wall, and the arc-shaped openings are provided with opening stiffeners, and one side of the inner filling plate wall is provided with stiffeners or inner filling Stiffeners are provided on the front and rear sides of the slab wall or a number of vertical joints are evenly distributed on the inner filling slab wall.

Further, the stiffener is a cross-shaped stiffener or a diagonally braced stiffener.

Further, a full-length hole is arranged on the inner filling plate wall.

A construction method of steel pipe concrete frame column-steel plate shear wall system, comprising the following steps:

(1) Locate and install steel pipes for concrete filled steel pipe frame columns;

(2) Weld the frame beam to the frame column;

(3) Prefabricated inner filler wall, slit the inner filler wall by laser or set stiffeners on the inner filler wall or open a long hole on the inner filler wall, and place the prefabricated inner filler wall Welding with frame beams and steel pipe concrete frame columns;

(4) Concrete is poured in the concrete-filled steel tube frame column to complete the component construction.

Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable design, convenient construction, superior seismic performance, high bearing capacity, good ductility and the like.

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

Description of drawings

Fig. 1 is a schematic diagram of the implementation structure of setting vertical joints in the inner filling steel plate wall;

Figure 2 is a schematic diagram of the implementation of the cross-shaped stiffeners for the inner-filled steel plate wall;

Fig. 3 is a schematic diagram of the implementation structure of the internally filled steel plate wall with diagonally braced stiffeners;

Fig. 4 is a schematic diagram of an implementation structure in which an inner filling steel plate wall is provided with a full-length opening.

In the picture:

1-frame column; 2-frame beam; 3-filler wall; 4-vertical joint; 5-weld; 6-stiffener;

detailed description

As shown in Fig. 1-4, a CFST frame column-steel plate shear wall system includes a frame column 1, a frame beam 2, and an inner filler wall 3 is set in the space surrounded by the frame column 1 and the frame beam 2.

In this embodiment, the inner filler wall 3, the frame column 1, and the frame beam 2 are welded to each other to ensure that they can work together.

In this embodiment, the frame column 1 is a steel tube concrete frame column.

In this embodiment, the cross section of the frame column 1 is rectangular or circular.

In this embodiment, the frame beam 2 is a steel beam or a steel concrete beam, and the steel pipe of the steel tube concrete column and the frame beam 2 can be made of ordinary steel or high-strength steel.

In this embodiment, the inner filler wall 3 is a thin-walled steel plate. In order to prevent stress concentration, the four diagonal corners of the inner filler wall 3 are provided with arc-shaped openings, and the arc-shaped openings are provided with opening stiffeners 7. One side of the filler wall 3 is provided with stiffeners 6 or the front and rear sides of the inner filler wall 3 are provided with stiffeners 6 or there are several vertical seams 4 evenly distributed on the inner filler wall 3, and the vertical seams 4 are opened by laser.

In this embodiment, the stiffener 6 is a cross-shaped stiffener or a diagonally braced stiffener.

When the vertical seam 4 is set on the inner filling board wall 3, the whole inner filling board wall 3 acts like several juxtaposed columns due to the existence of the vertical joint 4, and bends and deforms earlier than the frame column, so that it has good energy consumption. performance and ductility, and because the length and position of the vertical seam 4 can be flexibly arranged, the stiffness and strength of the member can be adjusted very conveniently.

When the cross-shaped stiffeners are set on the inner filler wall 3, the inner filler wall 3 is divided into small cells with similar mechanical properties as thick plates, so as to increase the buckling load of the inner filler wall 3, and it can also improve the The lateral stiffness of wall 3 makes it have a higher ultimate bearing capacity and good energy dissipation capacity. If the stiffness permits, cross stiffeners can be set on only one side, which not only saves construction costs, but also improves aesthetics.

When the diagonal bracing type stiffener is set on the inner filling wall 3, the directions of the principal stresses in the diagonal bracing and the inner filling wall 3 are consistent, the stress is more reasonable, and the stability of the diagonal bracing is controlled by the internal filling The slab wall 3 is improved, and the out-of-plane stability of the inner filling slab wall 3 is also improved, so that the member has a higher ultimate bearing capacity and energy dissipation capacity. If the stiffness permits, only one side of the diagonal brace stiffener can be provided. It not only saves the construction cost, but also improves the aesthetics.

In this embodiment, there is a long opening on the inner filling plate wall, and the opening can not only meet the construction requirements such as equipment, door and window openings, but also reduce the width of the inner filling plate wall 3 and save steel. By adjusting the inner filling plate The stiffness ratio of the wall 3 to the frame can make the components have a higher safety reserve. Its ductility and energy dissipation capacity are very good, and it has high bearing capacity and lateral stiffness.

A construction method of steel pipe concrete frame column-steel plate shear wall system, comprising the following steps:

(1) Locate and install the steel pipe of the CFST frame column 1;

(2) Weld the frame beam 2 onto the steel pipe of the frame column 1;

(3) Prefabricate the inner filling board wall 3, slit the inner filling board wall 3 by laser or set stiffeners 6 on the inner filling board wall 3 or open a long hole 8 on the inner filling board wall 3, and place the prefabricated The good inner filling plate wall 3 is welded with the frame beam 2 and the steel pipe concrete frame column;

(4) Concrete is poured in the concrete-filled steel tube frame column to complete the component construction. The concrete can be ordinary concrete or self-compacting concrete.

The above list is a preferred embodiment, and the purpose, technical solutions and advantages of the present invention are further described in detail. It should be understood that the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. a steel pipe concrete frame post steel plate shear force wall system, it is characterised in that: include frame columns, frame beam, in the space that frame columns and frame beam surround, be provided with interior fill plate wall。

2. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 1, it is characterised in that: interior fill plate wall, frame columns, frame beam are welded to each other。

3. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 2, it is characterised in that: frame columns is steel pipe concrete frame post。

4. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 3, it is characterised in that: the cross section of frame columns is rectangle or circle。

5. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 4, it is characterised in that: frame beam is girder steel or girder with rolled steel section en cased in concrete。

6. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 5, it is characterized in that: interior fill plate wall is thin-walled steel plate, four diagonal angles of interior fill plate wall all offer arc hole, arc hole place is provided with hole ribbed stiffener, and interior fill plate wall one side is provided with both sides before and after ribbed stiffener or interior fill plate wall and is provided with on ribbed stiffener or interior fill plate wall and is evenly equipped with some perps。

7. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 6, it is characterised in that: ribbed stiffener is cross ribbed stiffener or Cross Braced type ribbed stiffener。

8. a kind of steel pipe concrete frame post steel plate shear force wall system according to claim 7, it is characterised in that: interior fill plate wall is provided with elongated hole。

9. a construction method for steel pipe concrete frame post steel plate shear force wall system, adopts steel pipe concrete frame post steel plate shear force wall system as claimed in claim 8, it is characterised in that comprise the following steps:

(1) steel pipe of location and installation steel pipe concrete frame post；

(2) by frame beam positioning welding in frame columns；

(3) prefabricated interior fill plate wall, is undertaken cracking or arranging on interior fill plate wall ribbed stiffener or offer elongated hole on interior fill plate wall by laser on interior fill plate wall, is welded with frame beam, steel pipe concrete frame post by prefabricated interior fill plate wall；

(4) casting concrete in steel pipe concrete frame post, completes component construction。