دانلود رایگان مقاله انگلیسی رفتار لرزه ای نوار فولادی تقویت شده CSPSW ها در سازه های ساختمانی مدولار - الزویر 2018

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.

Conclusion

This paper presented a study of seismic behavior of steel strip reinforced corrugated steel plate walls. An experiment of six full-scale specimens was carried out under quasi-static cyclic loads. These specimens were constrained at two pinned connection to veritably simulate the boundary conditions in modular building structures. The effects of the steel strip reinforcement, including lateral-force resistance mechanism, cyclic performance, stiffness and strength behavior, ductility and energy dissipation capacity, are discussed based on the test results. The following observations and conclusions can be drawn based on the tests results. 1. The observations showed that failure mode of the CSPSWs for the modular building structures was the facture of the weld between the beams and columns. Even reinforced with stiffeners, the failure of the frames still occurred before the infilled plate completely lost the load resisting capacity. The failure of the inner frame around the opening was muck earlier than the failure of the CSPSWs. In practical construction, the failure of the inner frame may cause severe damages to nonstructural components for modular building structures. 2. All the specimens in this paper exhibited favorable seismic performances including stiffness, ultimate strength, ductility and energy dissipation, although the performances of CSPSWs were significantly reduced attributable to the opening compared with the un-opening contrast specimen.