连续刚构桥的Pushover分析与应用

采用Pushover分析方法对某连续刚构桥梁进行地震响应分析，分别建立考虑桩土作用与不计桩土作用的计算模型，进行Pushover分析和性能评价，将得到的结果进行对比分析。研究结果表明：对桥梁结构进行Pushover分析时，考虑桩土作用对结构的能力曲线和目标位移影响较大，不可忽视；同时，对塑性铰出现在隐蔽部分的问题，提出了解决的方法，并进行了验证，获得了满意的结果。算例分析结果可为同类桥梁抗震设计提供参考。

Pushover analysis for continuous rigid frame bridge

The seismic response analysis for a continuous rigid frame bridge was performed by application of the pushover method. The coupled effect between the pile and soil was considered in the analytical model. The seismic response by neglecting the coupled effect of the pile and soil is also calculated. Two results were compared and discussed. The results show that the coupled effect should not be neglected. This coupled affect greatly affects the capacity spectrum and target displacement of the structure. In addition, the improvement suggestion for the problem of plastic hinge occurring in the hidden parts is proposed. The result is satisfying, which impfies that the pushover method is valid for the bridge aseismatic design.