【摘要】 地震作用下普通剪力墙破坏形态单一,破坏过程不具有明显的层次性。提出了一种由壁式框架与哑铃型剪力墙或带暗支撑剪力墙组合而成的冗余型剪力墙,对两种剪力墙分别设计了2片2层1/2缩尺的剪力墙模型,并进行低周反复荷载试验。重点分析了试件的承载力、刚度、延性、滞回特性、衰减过程及各阶段的破坏形态,提出可以采用不同受力破坏阶段墙体的层间位移角作为墙体性能的初步量化指标。试验结果表明,组合式冗余剪力墙有良好的抗震性能,受力破坏时具有明显的层次性,在墙体的一种结构形式破坏后另一种结构形式能继续承受荷载。这种墙体的试验研究在国内外尚未见,该试验是组合式冗余剪力墙的探索性试验。更多还原

【Abstract】 The failure mode of common shear wall due to earthquake is onefold,and there is no obvious hierarchy in the failure process.A combined redundant shear wall composed of wall-frame and dumbbell-shaped shear wall or shear walls with concealed bracings is proposed.The bearing capacity,stiffness,ductility,hysteresis property,attenuation process and failure mode at each stage are especially analyzed through a low-frequency cyclic loading test of 2 floors 1/2 scale shear wall models of each type the story drift angle at different failure stage is regarded as a preliminary performance quantitative indicator.Test results show that the combined redundant shear wall has a good seismic performance,and there is an obvious hierarchical characteristics in the failure process.When one part in the wall fails,the other can still bear additional locals.It should be noticed that this type of wall hasn’t been studied previously,and the present study is a tentative work for the combined redundant RC shear-wall.更多还原