【摘要】 采用钢筋面积腐蚀的老化模型,基于云图法对不同时间节点的桥梁老化模型进行地震易损性分析,并采用拉丁超立方抽样(LHS)考虑结构材料的不确定性,从而得到在不同时间节点的地震易损性曲线。文中以一座隔震连续梁桥为分析对象,通过Open Sees平台建立有限元模型,研究随着时间推移隔震连续梁桥地震易损性的变化。研究结论可以为文中的既有隔震连续梁桥的全寿命周期地震易损性分析提供理论参考。更多还原

【Abstract】 By using the aging model of steel corrosion,the seismic vulnerability analysis of the isolated continuous girder bridge with a consideration of material aging at different time nodes is based on cloud method,and through taking the Latin Hypercube Sampling( LHS) approach,uncertainties of the material is considered. So we obtain seismic vulnerability curves at different points in time. In this paper,the isolated continuous girder bridge is acted as analysis of the object. By using Open Sees to form the finite element model,the change of seismic vulnerability is illustrated in detail as time pass. These achievements will provide theoretical reference and analysis support for the seismic vulnerability analysis of the isolated continuous girder bridge’s life cycle.更多还原