Numerical analysis of vehicle impact factors of continuous beam bridges and on-site tests data survey

摘要：

　　Moving load may induce the important impact effect for highway bridges.In this paper,the impact factor(IM)for the continuous beams bridges is investigated via the numerical computation based on FEM bridge modeling and the on-site tests data survey.The impact characteristics of a three-equal-span continuous beam under the influence of vehicle speed,vehicle mass,bridge fundamental frequency is numerically analyzed.By sorting out the measured and reported IM values of the continuous beams bridge in China in recent 20 years,the results show: When the IMs of the deformation respone at one section reach the extremum,the corresponding reciprocals of the adjacent frequency ratios are geometric sequences; The IM value regulated in the Chinese code is conservative for those bridges of high fundamental frequencies.

关键词： continuous beam dynamic impact frequency ratio test data

作者: Qi HU Zhi SUN

作者单位: Master student,Department of Civil Engineering,Tongji University,Shanghai,China Research fellow,Department of Civil Engineering,Tongji University,Shanghai,China

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: 2058-2065

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）