以某特大跨度斜拉桥为例,分析了其在地震作用下的受力关键部位,并以30条随机选取的Ⅲ类场地震波对其进行了地震易损性分析,从纵桥向和横桥向两个方面分析了特大跨度斜拉桥的初步地震易损性分布趋势和概率大小,为桥梁的设计、运营、及风险管理提供必要的科学依据和技术支持。 Taking an extra large span cable-stayed bridge as an example, the key parts of the cable-stayed bridge subjected to earthquake are analyzed. Seismic vulnerability analysis is conducted with 30 randomly selected class Ⅲ earthquakes. From the vertical and horizontal bridge The bridge analyzes the distribution trend and probability of initial seismic vulnerability of the super long span cable-stayed bridge in two aspects and provides the necessary scientific basis and technical support for the design, operation and risk management of the bridge.