某立交桥动载试验实例研究

摘要

In this paper a dynamic load test on traffic overpass is made in order to measure the self-vibration characteristics of the bridge structures through the bridge modal test and the vehicle stimulate test under diffent working conditions. The purpose of this experiment is to evaluate the work performance of the bridge under dynamic load effect, to predict the bridge operation condition and to provide some experience for the similar bridge detection and test in the future time. The experiment results turns out that the bridge meets the requirements of design and operation in mechanical property.%对某立交桥进行了桥梁动载试验。通过桥梁模态试验和不同工况下的车辆激励试验，测定桥梁结构的自振特性，用以评价桥梁在动荷载作用下的工作性能，预测桥梁运营状况，并为以后同类桥梁检测及试验提供一定经验。试验结果表明该桥在力学性能上满足设计和使用要求。