窑后头大桥自振特性及动力响应测试结果分析

Analysis of natural vibration characteristics and dynamic response test results of Yaohoutou bridge

采用脉动试验、无障碍行车试验,对窑后头大桥结构进行自振特性、动力响应测试,分析其自振特性及动力响应结果;结果表明:该桥左右幅自振频率评定标度均为1,桥梁实际冲击系数为1. 013,实际冲击系数小于理论计算值,结构行车条件较好。

In this paper,pulsating test and barrier-free driving test are used to test the free vibration characteristics and dynamic response of the structure of the Yaohoutou bridge,and analyze its self-vibration characteristics and dynamic response results. The results show that the self-vibration frequency evaluation scale of the bridge is 1,the actual impact coefficient of the bridge is 1. 013,the actual impact coefficient is less than the theoretical calculation value,and the structure driving condition is better.