以平安湟水河桥跨径（48+80+48）m的连续梁桥为算例，根据桥梁所处的地质条件，建立了三维空间有限元模型，并进行了动力特性分析，计算得到了连续梁桥反应谱的内力响应，指出综合分析地震力组合输入对该桥的影响是必要的。%Taking the continuous beam bridge of Ping’an Huangshui River bridge span(48+80+48)m as an example,according to the geolog-ical condition of bridge location,this paper established a three-dimensional finite element model,and carried on dynamic characteristics analysis, calculated and gained the internal force response of continuous beam bridge response spectrum,pointed out that the comprehensive analysis on seismic combination input was necessary to influence the bridge.
展开▼
