【摘要】 为了研究复杂结构在多序列地震作用下的累积损伤效应,针对一实际建筑——法门寺合十舍利塔进行了重复地震作用下的弹塑性时程分析,分别采用基于位移和基于Park-Ang损伤模型的指标分析结构在多重地震序列下的损伤累积效应。研究结果表明:基于位移的单参数损伤指标无法较真实地反映结构在重复地震下的累积损伤效应,而基于位移和能量组合的Park-Ang损伤模型指标能较为合理地反映结构的这种累积效应;前次地震作用产生的残余变形对结构在后续地震中的响应有很大的影响,因此计算有损结构的损伤指数时,应考虑结构的初始残余变形对损伤指数的影响。更多还原

【Abstract】 In this paper,inelastic time-history analyses of the Dagoba in Famen Temple under repeated sequence seismic loads were carried out to study the cumulative damage of this complex structures.The displacement index and the Park-Ang damage model were used for the cumulative damage assessment.The results indicate that the Park-Ang damage index combined with deformation and energy is better than the deformationbased indices for cumulative damage assessment of structures.It is found that the residual deformation induced by former earthquakes may have significant effects on the post-earthquake structural behaviors.Therefore,the initial residual deformation should be considered properly in the calculation of damage indices for existing structures.更多还原