不中断交通的梁式桥梁试验与状态评估技术  

Experiment and Condition Assessment Technology for Beam Bridge without Interrupted Traffic

作　　者：伍育钧[1] 张宇峰[2,3] 张令弥[4] 郑岗[2,3] 

机构地区：[1]江苏沪苏浙高速公路有限公司,江苏吴江215214 [2]江苏省交通科学研究院长大桥梁健康检测与诊断技术交通行业重点实验室,江苏南京210017 [3]江苏省公路桥梁工程技术研究中心,江苏南京210096 [4]南京航空航天大学,江苏南京210016

出　　处：《现代交通技术》2012年第3期19-21,共3页Modern Transportation Technology

基　　金：江苏省交通科学研究计划项目(项目编号:06Y20)

摘　　要：在不中断交通的条件下建立了运行试验模态分析的模态挠度法。该方法以挠度作为评价桥梁结构承载力的指标,利用来往车辆的激励响应测量数据获得桥梁结构的交通激励试验模态参数,推算出桥梁结构的静挠度,从而评定桥梁结构的承载力。实桥测试表明,该方法可用于桥梁承载力和使用状况评估。The mode flexibility method was built by running the experimental modal analysis under the condition of uninterrupted traffic. The method took the deflection as the indicator of bearing capacity of bridge structure, the bridge modal parameters could be discerned by analyzing the responding signal excited by traveling vehicles,and then the deflection was worked out to estimate the condition of bridge. In the end, the method was verified by a real bridge test.

关 键 词：桥梁工程 状态评估 模态柔度法 不中断交通 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]