本文基于将能力谱方法应用于桥墩横向和纵向抗震性能的分析,研究场地条件对桥梁抗震性能的影响。结果表明随着场地条件由类变为类,其地震反应逐渐增大,其抗震能力下降呈明显下的趋势,性能点从弹性阶段进入塑性阶段,性能点的位移越来越大。 Based on the application of the ability spectrum method to the analysis of the lateral and longitudinal seismic performance of piers, this paper studies the influence of site conditions on the seismic performance of the bridge. The results show that with the change of site conditions from class to class, the seismic response gradually increases, and the seismic capacity decreases obviously. The performance point moves from the elastic phase to the plastic phase, and the displacement of the performance point becomes larger and larger.