【摘要】 联肢剪力墙在地震作用下的非线性分析具有重要的研究意义,根据高层建筑结构联肢剪力墙的特点,将两元件墙单元与多弹簧连梁单元组合,对钢筋混凝土联肢剪力墙作弹塑性有限元分析。采用应变硬化的弹塑性应力应变关系描述钢筋,引入约束影响系数以考虑连梁箍筋对混凝土应力应变关系的影响,提出一种可以反映连梁弹塑性剪切变形的计算模型。验证了同济大学一组联肢剪力墙试验,计算结果与试验结果相符证明了模型的有效性。但滞回模型的骨架曲线有待进一步改进,以考虑下降段的影响。更多还原

【Abstract】 It has important research meanings to analyze the nonlinear response of coupled walls subjected to earthquake.In this paper,two spring model for reinforced concrete shear walls and multi-spring model for coupling beams are presented.The combination of these two elements is able to simulate the continuity between the walls and the coupling beams completely.And in the element formulation,the elasto-platic constitutive model for steel bar and concrete are adopted.A model capable of simulating the deformation as shearing in coupling beam element has been put forward for analysis.And a test of reinforced coupled shear walls at the Tongji University is reviewed.The analysis model proves to be effective with the accordance between results of computation and experiment.However,the envelop curve of hysteresis model should be improved to considering the effect of descending part.更多还原