能力谱方法中桥梁抗震性能的影响因素

介绍了能力谱方法的原理及基本步骤，并结合桥梁工程分析了在能力谱方法中地震烈度及场地条件对桥梁抗震性能的影响，指出地震烈度越大，性能点的位移也逐渐增大，总体趋势是地震反应由弹性进入塑性；场地条件越差，地震反应越大，性能点位移增加较快，抗震能力下降也较快。

The influencing factors of bridge seismic performance in energy spectrum method

The principle and basic procedure of energy spectrum method were introduced,combined with bridge engineering,the earthquake intensity and space situation influences on bridge seismic performance in energy spectrum method were analyzed.It pointed that performance point shift increased with earthquake intensity,and the whole trend was earthquake effect from elastic to plastic, while site situation worse,earthquake effect bigger,performance point shift increasing rapider and seismic performance decrease rapider.