Structural damage identification of bridges from passing test vehicles

摘要：

　　This paper presents two approaches for structural damage identification of a bridge from the dynamic response recorded from a test vehicle during its passage over the bridge.Using the acceleration response recorded by the vibration sensors mounted on the test vehicle during its passage over the bridge,along with the computed displacement response,the bending stiffness of the bridge can be determined using either(1)the frequency domain method,or(2)the time domain method.Here,we assume that the test vehicle is allowed to regularly monitor the bridge semi-annually.The response of the test vehicle recorded during the current travel is assumed as the damaged state and that of the previous travel as the undamaged state.If no damage is detected by comparison of the two states,the current state is reset as the undamaged one,and another monitoring continues.By comparing the bending stiffness values identified from the vehicle-collected data for the bridge under the undamaged and damaged states monitored regularly by the test vehicle,the bridge damage location and severity can be identified.Through numerical simulations,the present approaches are shown to be feasible even in the presence of environmental noise.

关键词： bending stiffness damage identification environmental noise bridge test vehicle

作者: Y.Yang L.L.Wanga J.Q.Lianga

作者单位: Key Laboratory of New Technology for Construction of Cities in Mountain Area in Chongqing University,and School of Civil Engineering,Chongqing University,Chongqing,China 400045

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 2104-2110

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）