对上海地区可能遭遇的典型地震动进行了 β谱曲线的分析与比较 ,进一步考察了场地效应的影响 ,并选取上海市内环线标准段和延安路 -成都路高架结构进行地震反应分析 ,对不同潜源、不同震级的地震动作用时的地震反应进行比较分析 .研究表明 ,上海地区桥梁应具有更高的抗震要求 ,建议针对上海地区特点对城市桥梁抗震规范的反应谱作适当修正 The paper analyzes and compares the β-spectrum curve of the typical earthquakes that may be encountered in Shanghai area, further investigates the influence of site effect, and selects the standard section of Shanghai’s inner ring and the elevated structure of Yan’an Road-Chengdu Road for seismic response analysis. Potential source and earthquake magnitude of different magnitudes.Research shows that bridges in Shanghai area should have higher seismic requirements and it is suggested that the response spectra of urban bridges should be properly corrected according to the characteristics of Shanghai area