基于位移延性的剪力墙抗震设计

Displacement Ductility-Based Aseismic Design for Shear Walls

本文介绍了不同轴压比的剪力墙在往复水平荷载作用下的试验结果，研究了轴压比对剪力培受力性能的影响；建立了剪力场考虑约束边缘构件的位移延性比的计算方法；通过理论计算，研究了轴压比、高宽比、约束边缘构件的长度及其含特征值对位移延性的影响；提出了基于位移延性的剪力场抗震设计建议以及确定约束边缘构件长度及其配箍的计算方法。

In this paper, the experimental results of shear walls subjected to horizontal cyclic loading withdifferent axial compression ratio are introduced. The influence of axial compression ratio on theseismic behavior of shear wall is studied. A computational method for the displacement ductility ratioof shear wall is established in consideration of the confinement Of boundary zones at both ends. Effectof axial compression ratio, aspect ratio, length of confined zone and the characteristic value of stirrupcontent in boundary zone on displacement ductility are studied by theoretical calculation. Finally, adisplacement ductility-based aseismic design method for shear walls is proposed and the calculationprocedure for the length of confined boundary zone and its characteristic value of stirrup content issuggested.