钢管混凝土系杆拱桥动载试验分析

Dynamic Load Test and Analysis of a Steel Pipe Concrete Tied Arch Bridge

运营桥梁的定期检测是保证运营安全的重要手段。动载试验主要测试其固有频率和冲击系数,其测试数据是判断桥梁结构运营状况和动力承载特性的重要指标。本文对某桥梁进行动载试验,通过脉动试验和无障碍行车试验测得的数值与计算值进行比较分析。结果表明:该桥的固有频率、冲击系数均满足规范要求,结构动力性能良好。

Regular inspection of the operating bridge is an important means to ensure the safety of operation. Dynamic load test is mainly to test its natural frequency and impact coefficient, and the test data is an important index to judge the operation condition and the dynamic load characteristics of the bridge structure. In this paper, the dynamic load test is carried out on a bridge, and the numerical value and the calculated value are compared and analyzed. The results show that the natural frequency and impact coefficient of the bridge meet the requirements of the specification, and the dynamic performance of the structure is good.