基于动载试验的某双曲拱桥动力性能评价

Dynamic performance evaluation of a double curved arch bridge based on dynamic loading test

为了延长桥梁的使用寿命,需要对桥梁做相应的评估,并采取对应的措施。本文就是在某双曲拱桥加固后,根据需要进行了动载试验,并将动载试验的结果与建立的有限元模型的计算结果相对比发现。该双曲拱桥加固后的自振频率、冲击系数和阻尼比等动力性能参数均符合要求,可为同类双曲拱桥的动力性能测试提供借鉴。

In order to prolong the service life of the bridge,it is necessary to make a corresponding assessment of the bridge and take corresponding measures. In this paper, the dynamic loading test was carried out after the reinforcement of a double arch bridge, the results of the dynamic load test were compared with the results of the established finite element model and found that the dynamic parameters such as the natural frequency, the impact coefficient and the damping ratio of the double arch bridge were consistent with the requirements, this method can be used for reference to the dynamic performance test of similar double arch bridges.