基于性能的抗震设计方法在剪力墙结构中的应用

本文对基于性能的抗震设计方法中最具有代表性的直接基于位移的设计方法在剪力墙结构中的应用进行了研究。采用结构非线性分析程序探讨了墙厚、混凝土强度等级、纵筋配筋率、钢筋级别、轴压比、墙长等因素对单肢剪力墙屈服位移的影响,从而对现有的屈服曲率计算公式进行了改进。另外将按顶点荷载作用下的屈服位移计算公式求出的屈服位移与实际倒三角形荷载作用下的剪力墙屈服位移进行了比较,,从而推导出倒三角形荷载作用下的屈服位移计算公式。

Analysis of performance-based seismic design method in shear walls

In this paper,the application of direct displacement-based design method which is the most representative performance-based design method for the shear wall structure will be studied.In order to calculate the yield displacement of shear walls accurately,the influence of some factors,which include thickness of wall,concrete grade,ratio of longitudinal reinforcement and depth of walls etc.upon the yield displacement of single shear wall was analyzed by using nonlinear analysis procedures,and then the routine formula of yield curvature was improved.By comparison between the yield displacement calculated by formula under the roof load and that under the inverse triangular load,the formula of the yield displacement under the inverse triangular load is put forward.