混凝土连续梁桥的动态性能测试分析

讨论了在多跨的混凝土连续梁桥成桥以后的动态性能测试中 ,使用各单跨分批检测的方法 ,以少量的传感器完成多跨连续梁的大量测点样本的采集工作 ,测出结构的自振频率及相应的振型。并以一实桥为例 ,应用连续梁结构分析方法 ,求得桥梁的振动理论值。检测值与理论计算值相比较 ,误差甚小 ,说明该方法具有实际的使用意义

Structural dynamics testing and analysis of concrete continuous beam bridge

The structural dynamics testing of the built concrete continuous beam bridge with multi-span is investigated. The method of detecting each span in turn is adopted,and only a small number of transducers are utilized to carry out the sample collecting of the measure points in large quantities, then the frequencies and modes of structure vibration can be measured. A practical example is presented,and the theoretical values of the bridge vibration are derived by use of the analysis method for continuous beam structure. The testing results are in good agreement with the theoretical calculations.