改进的城市桥梁震害预测因子法研究及其应用1

Modified Factor Method of Seismic Risk Assessment for Urban Bridges——Theory and Application

本文根据对青岛市123座桥梁的考察结果,建立了与青岛市桥梁类型比例相当的国内243座桥梁的资料,并以此为对象阐述了城市桥梁震害预测因子法的研究过程,确定了桥梁易损性影响因素及其取值,给出了桥梁震害预测指标计算方法和各种破坏状态的划分依据等。最后将此方法运用到青岛市地震应急指挥系统中,对青岛市的123座桥梁进行了桥梁震害模拟。

Through comparison of the existing methods of seismic risk assessment for bridges, this paper develops the factor method of seismic risk assessment for bridges, which is applicable to the bridges of Qingdao city. Taking 123 bridges in Qingdao city as the base, we collected relative information from 243 bridges in China to determine the 13 factors and the value of each factor. Our method has been utilized in the earthquake emergency responding system of Qingdao city to simulate the potential damage of 123 bridges under destructive earthquakes.