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为研究岸桥结构在地震作用下的倒塌易损性,以两台典型岸桥为研究对象,分别建立岸桥在工作和非工作两种工况下的有限元分析模型.采用增量动力分析(IDA)方法,以门框构件失效和结构有限元计算失稳作为倒塌能力的判定准则,分析得到岸桥结构地震倒塌易损性曲线.结果表明:两种工况均适合以谱加速度作为地震动强度参数进行岸桥结构易损性分析;两台岸桥实例在不同工况下的结构倒塌易损性具有较明显的差异,建议将岸桥结构分为工作和非工作工况进行抗震性能研究,以提高分析的准确性.
In order to study the collapse vulnerability of quayside structures under earthquake, two typical quayside bridges are taken as research objects, and the finite element analysis models of quayside quayside working and non-working conditions are respectively established. By using incremental dynamic analysis (IDA) method, the failure instability of frame members and the finite element method are taken as the judgment criteria of collapse ability, and the vulnerability curves of seismic collapse of quay bridge structures are obtained. The results show that the two conditions are suitable for using spectral acceleration as ground motion Strength parameters of the quayside structure vulnerability analysis; two quayside bridge cases in different conditions of structural collapse vulnerability has obvious differences, it is proposed to shore quayside structure is divided into working and non-working conditions for seismic performance , To improve the accuracy of the analysis.