自复位两边连接梯形波纹钢板剪力墙滞回性能分析

This paper proposes a self-centering trapezoidal corrugated steel plate shear wall structure with beam-only connected web plates，including a self-centering steel frame and embedded trapezoidal vertical corrugated steel wall panels. The wall panels are connected only to the beams to facilitate assembly construction. The general finite element software ABAQUS is used to establish a three-dimensional finite element model of a single-layer single-span self-centering trapezoidal corrugated steel plate shear wall and perform nonlinear hysteresis analysis to investigate the influence of wall panel connection form，wall panel waveform，and the prestress level of the structure on the hysteretic and recentering performances. The results show that the self-centering trapezoidal corrugated steel plate shear wall connected on beam only can effectively dissipate the seismic energy and control the residual drift after an earthquake. When the lateral side is stiffened，its bearing capacity，energy dissipation capacity，and residual drift are relatively equal with the self-centering corrugated steel plate shear wall with web plates in which a corner is cut out and connected with beam and column. With increasing thickness，the lateral resistance mode of the corrugated steel plate shear wall connected on beam only changes from shear buckling to shear yield，and the structural bearing capacity and energy dissipation capacity per unit thickness increase significantly. When the thickness increases from 3 mm to 9 mm，the amplitude is 40% and 50%，respectively. Notably，however，the residual drift of the structure also significantly increases to 0.5% above the repairable limit. With the reduction of the corrugation angle or wavelength of the corrugated wall panel，the residual drift of the structure can be effectively reduced. However，the bearing and energy consumption capacities of the structure are reduced，and the maximum drop can reach 30% and 60%，respectively. Alternatively，as the initial prestress of the post-tensioned tendons is increased by 50%，the structural bearing capacity increases by 13%，and the maximum residual drift significantly decreases from 0.80% to 0.35%，while the energy consumption capacity is unchanged. The bearing capacity of the structure increases with the area of the post-tensioned tendons，while the residual drift and energy dissipation capacity remain basically unchanged. Therefore，the buckling and lateral resistance modes of the beam-only connected corrugated steel wall panel have obvious effects on the hysteresis and self-centering behavior of self-centering corrugated steel plate shear wall，and the effects are not completely consistent with the traditional corrugated steel plate shear wall. The geometric parameters of the corrugated wall panels and the prestress level must be comprehensively considered and selected so that the self-centering corrugated steel plate shear wall connected on beam only can make full use of the bearing and energy consumption capacities and effectively control the residual drift after an earthquake.