钢筋混凝土剪力墙构件极限位移的计算方法及试验研究  

Experimental and analytical studies on the ultimate displacement of RC shear walls

作　　者：张松[1] 吕西林[1] 章红梅[1] 

机构地区：[1]同济大学,上海200092

出　　处：《土木工程学报》2009年第4期10-16,共7页China Civil Engineering Journal

基　　金：国家自然科学基金(50621062;90815029)

摘　　要：基于性能的结构设计对构件非线性变形能力的计算精度提出了更高的要求,为了研究剪力墙结构基于性能的设计方法,在同济大学土木工程防灾国家重点实验室进行了18片不同设计参数的钢筋混凝土剪力墙构件的拟静力试验,根据试验结果分析剪力墙极限位移的组成,推导不同破坏形态下考虑剪切、弯曲变形影响的极限位移计算公式,对剪切位移的影响因素及其大小和塑性铰区长度、截面曲率在塑性铰长度范围内的分布进行分析,提出用弯剪比参数计算剪力墙塑性铰区长度的方法,为剪力墙结构基于性能的设计方法提供了一种途径。Performance-based design requires sound accuracy in estimating the non-linear deformation capacity of structural members. To study the performance-based design procedure for shear wall structures, pseudo-static tests for eighteen RC shear walls with different design parameters were conducted in the state key laboratory for disaster reduction in civil engineering at Tongji University. Based on the test results, the components of the shear wall ultimate displacement are analyzed to derive a formula which takes into account of the effects of shearing and flexural deformation for different failure mechanisms. The influencing factors and the scale of shear displacement, the length of plastic hinges and the distribution of cross-section curvatures have also been analyzed. A method for the calculation of the length of plastic hinges using flexure shear ratio is proposed. The formula for the ultimate displacement of shear wall provides a practical tool for the performance-based design procedure of shear wall structures.

关 键 词：钢筋混凝土剪力墙 极限位移 拟静力试验 塑性铰区长度 

分 类 号：TU375.2[建筑科学—结构工程]