رفتار لرزه ای نوار فولادی تقویت شده CSPSW ها در سازه های ساختمانی
Abstract
1- Introduction
2- Experimental program
3- Experimental results and discussion
4- Conclusion
References
Abstract
Corrugated steel plate shear walls (CSPSWs) are widely used as exterior walls and efficient lateral load resisting systems in modular building structures (MBS). In practical construction, the CSPSWs are usually accommodated with door or window openings and reinforced with steel strips. The effect of the steel strip reinforcement needs to be evaluated. An experimental study was conducted to investigate the seismic behavior of steel strip reinforced CSPSWs in modular steel structures. Six full-scale specimens were constrained at corners and loaded with cyclic lateral load. The results showed that that failure mode of this lateral load resisting system for the modular building structures was the facture of the weld between the frame beams and columns. The steel strip reinforcement had little effect on the ultimate strength, but could improve the behavior of stiffness, ductility and energy dissipation.
Introduction
Corrugated steel plate shear walls (CSPSWs) have been widely constructed as efficient lateral load resisting system in the seismic hazard area. Due to exceptional strength, ductility and light weight, the corrugated steel plate shear walls are ideal for modular building structures (MBS). Corrugated steel plate shear wall usually consists of a rigidly connected frame and a corrugated thin steel plate infill. Compared with flat steel plate shear wall, the trapezoidal corrugations of the CSPSW provide out-of-plane stiffness, bringing higher lateral initial stiffness and avoiding the unpleasant buckling sound under very low load which impairs the living comfortability. Numerous studies have been conducted to investigate the lateral strength, stiffness, buckling behavior and energy dissipation capacity of corrugated steel shear wall systems and to propose prediction models. F. Emami etal. investigated the seismic behavior of horizontal and vertical CSPSWs under cyclic loads and the results showed that the direction of corrugations did not affect the seismic behavior significantly [1–3]. C. D. Zhou etal. [4] and J. Z. Tong [5] investigated the elastic buckling behavior of CSPSWs, giving predictions for the elastic buckling of the CSPSWs. M. Bahrebar etal. investigated the cyclic behavior of CSPSWs with numerical simulation and indicated the effectiveness of the web-plate thickness, corrugation angle, and opening size [6]. Effective non-linear analysis methods was introduced to predict the seismic performance of the CSPSWs [7–9]. The seismic behavior of the CSPSWs in regular structures has been investigated.