【摘要】 在现有抗震设计方法研究的基础上,提出了直接基于损伤性能的设计方法。首先,建立等效位移延性系数与结构损伤指标的关系,得到了反映不同设防水准损伤目标的结构等效位移延性系数;其次,运用R-μ关系模型,根据等效位移延性系数确定地震折减系数,从而计算出结构弹塑性地震作用;然后,建立结构的需求曲线与推覆曲线,对结构在强震作用下的性能进行评价;最后,通过算例说明了该方法的设计步骤及其可行性。更多还原

【Abstract】 In this paper,based on the current seismic design method, a seismic design method based on direct damage is presented. Firstly, the relationship of equivalent displacement ductility index and damage index for a structure is built, and various structural equivalent displacement ductility indexes for different levels of seismic damage performance objectives are provided. Secondly, according to R-μ relationship,the strength reduction factor of the stractnre is calculated by using the displacement ductility index, and its nonlinear seismic response is determined. Thirdly, the demand and push-over curues are built, and the seismic performance of the structure is evaluated by using the curves. Finally, the feasibility of the method is verified through an example.更多还原