Shear wall structure with rectangular steel pipe rows with vertical gaps

Abstract

The invention discloses a rectangular steel pipe row shear wall structure with vertical gaps. It is mainly composed of a plurality of vertically arranged rectangular steel pipes closely arranged horizontally and horizontally. The adjacent rectangular steel pipes are connected by connecting welds arranged at intervals, and the connecting welds at the junction of the steel pipe flange and the web Two adjacent steel pipes are connected. The vertical discontinuity of the connection weld forms a vertical gap between the rectangular steel pipes, and the rectangular steel pipes between the parallel vertical gaps form a small bending column, which bends and deforms under the action of the lateral load, so that the shear wall is under load. The plastic hinge formation at the end of the lower flexural column occurs before the overall instability of the shear wall, the out-of-plane instability of the flexural column and the local instability of the steel pipe wall. The invention has the characteristics of large anti-lateral bearing capacity, large out-of-plane rigidity, large anti-lateral rigidity, good seismic performance, good ductility, full energy consumption hysteresis loop and the like.

Description

technical field [0001] The invention relates to the technical field of building structure engineering, in particular to a rectangular steel tube row shear wall structure with vertical slits. Background technique [0002] Steel plate shear wall is a new type of lateral force resistance structure of steel structure buildings. Compared with traditional steel support and concrete shear wall or core tube structure, this structure has the concept of good ductility and easy realization of multiple seismic defense lines of the structure. , It has the advantages of convenient production and construction, and can increase the usable area of ​​the building. However, the currently widely used steel plate shear wall is relatively thin, which is prone to out-of-plane instability under the action of lateral load, which brings certain problems to the performance of the steel plate shear wall: the hysteresis curve has a pinch phenomenon, The energy dissipation capacity is not ideal; it need...

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Problems solved by technology

However, the steel plate shear wall widely used at present is relatively thin, and it is prone to out-of-plane instability under the action of lateral load, which brings certain problems to the performance of the steel plate shear wall: the hysteresis curve has pinch phenomenon, The energy dissipation capacity is not ideal; it needs to rely on the tension field formed after the buckling of the thin steel plate to resist the horizontal force, which requires the surrounding frame beams and columns to be strong enough to meet the conditions for the formation of the tension field

However, shear walls with vertical joints also have great limitations: (1) Due to the opening of vertical joints, the lateral load-bearing capacity and stiffness of steel plate shear walls are greatly reduced, which is harmful to the structure under wind load and frequent earthquakes. (2) Since the cross-section of the columbine between seams is a long and narrow section with free edges on both sides, the width-to-thickness ratio limit to ensure its local stability is strict, so it is often required in practice Relatively thick steel plates are used; (3) Since the cross-section of the small column between the seams is a narrow and long strip, the bending and torsional rigidity outside the plane is small, and it is prone to bending and torsional instability under load; (4) The dimensional accuracy of the vertical seam High requirements, often require high-precision processing methods such as laser cutting, making production difficult

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