Internal stiffened composite steel plate shear wall connected through high-strength bolts

Abstract

The invention relates to an internal stiffened composite steel plate shear wall connected through high-strength bolts and belongs to the field of structural engineering. The composite steel plate shear wall is characterized by being composed of a dual-layer flat steel plate, concrete, stiffening section steels, high-strength bolts, connection steel plates and the like and being embedded in a peripheral frame. The stiffening section steels disposed along the height direction are arranged between two layers of steel plates of the dual-layer flat steel plate, the stiffening section steels and the dual-layer flat steel plates are fastened through the high-strength long-screw bolts applying pretension force, and the concrete is poured in cavities between the stiffening section steels and the dual-layer flat steel plates. The stiffening section steels are made of cold rolled section steels with C-shaped sections or rectangular sections or hot rolled section steel with groove-shaped sections or rectangular sections. If the peripheral frame is a steel frame, the dual-layer flat steel plate is connected with fishplates through friction type high-strength bolts, and then the fishplates are in welded connection with the peripheral frame. If the peripheral frame is a reinforced concrete frame, the dual-layer flat steel plate is connected with the connection steel plates through the friction type high-strength bolts, and shearing resistant studs are arranged on the connection steel plates and buried in the peripheral frame.

Description

technical field [0001] The invention relates to an internally stiffened combined steel plate shear wall connected by high-strength bolts, belonging to the technical field of structural engineering. Background technique [0002] At present, the commonly used combined steel plate shear wall is generally divided into two forms: one is a single-layer steel plate combined shear wall, and the other is a double-layer steel plate combined shear wall. The single-layer steel plate composite shear wall is to pour concrete or place prefabricated concrete slabs on one or both sides of the single-layer embedded steel plate, while the double-layer steel plate composite shear wall is to pour concrete between the double-layer embedded steel plates. Combined steel plate shear wall has the advantages of both steel plate shear wall and concrete shear wall, and realizes complementary performance, superior seismic performance, concrete can also play the role of fire prevention, heat preservation,...

AI Technical Summary

Problems solved by technology

[0003] However, the existing composite steel plate shear walls have the following disadvantages: (1) The embedded steel plates are generally flat and thin steel plates, which are prone to buckling under the action of shear force, resulting in large out-of-plane deformation of the steel plates and gradually forming tension bands, Eventually separates from the embedded concrete and loses co-action

Unless the embedded steel plate is thick and eventually yield failure occurs, but the thick plate is very uneconomical and unacceptable by the market

(2) In order to achieve effective bonding between the embedded steel plate and concrete, it is necessary to arrange dense shear studs on the connection interface between the steel plate and the concrete, which causes a lot of inconvenience in fabrication and construction and increases the cost; at the same time, the bonding effect is not It is very ideal. The inventor has carried out multiple combined steel plate shear wall tests, and finally the failure mode of buckling and excessive deformation of the embedded steel plate has occurred, resulting in separation from the concrete slab.

(3) The embedded steel plate is generally thin and has a large plate area, and the out-of-plane rigidity is very weak, so it is easy to produce excessive out-of-plane deformation under the lateral pressure of wet concrete during pouring concrete, causing inconvenience in construction

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