火郎峪桥地震响应分析

Seismic response analysis of the Huolangyu Bridge

结合火郎峪桥的设计情况,建立动力分析有限元模型,对钢筋混凝土连续梁桥全桥动力特性进行了分析,分别选用50年超越概率10%和50年超越概率2%两个水准的反应谱进行桥的抗震分析,根据抗震分析的结果绘制结构在地震作用下的内力包络图,对塑性铰出现的位置进行了判断,对火郎峪桥各个桥墩在两水准地震作用下的弹塑性行为做出评估。

Combining with the design situation of the Huolangyu Bridge, it establishes the dynamic analysis finite element model, gets analysis on the bridge dynamic characteristics of the reinforcement concrete continuous beam bridge, respectively selects the response spectrum of two standard of the 50 years exceeding probability 10% and 50 years exceeding probability 2%, and gets anti-seismic analysis, according to the results of the anti-seismic analysis draws the interior force envelope diagram of the structure in the effect of the earthquake, judges the existing position of the plastic hinge, and evaluates the plastic behavior of the Huolangyu Bridge＇s all piers in the effect of two standard earthquake.