某既有桥梁加固后动载试验分析研究

摘要

In assessing the carrying capacity of the bridge,the dynamic properties and the ability of structural resistance to forced vibration and sudden loads could be understanded through dynamic load test. In the paper ,basic dynamic load test methods are introduced through engineering example. Meanwhile,conducting modal test and driving test after strengthen existing bridges,we judge the actual working condition of structure through test report. The study provides the guidance of the scientific basis for late bridge operational use.%在桥梁承载能力评定中，动载试验能了解结构自身的动力特性以及结构抵抗受迫振动和突发荷载作用的能力，通过工程实例介绍了动载试验的基本方法，对既有桥梁加固后进行模态测试和行车试验，以试验依据判断结构的实际工作状态，也为桥梁后期运营使用提供科学的指导依据。