IMPACT FACTORS OF THE BRIDGE UNDER MOVING VEHICULAR LOADS
This paper presents a new method to study the impact factor of a bridge based on the model updating technique.Using the genetic algorithm (GA) by minimizing an objective function of the residuals between the measured and predicted responses,the bridge and vehicle coupled vibration models were updated.The simulated results show that compared with the other bridge codes,the impact factor specified by the bridge code of AASHTO (LRFD) is the most conservative one,and the value of Chinese highway bridge design code (CHBDC) is the lowest; for the large majority of old bridges whose road surface conditions have deteriorated,calculating the impact factor with the bridge codes cannot obtain the reliable results.
Bridge moving vehicle model updating impact factor vibration
Xinfeng Yin Xiao Hu C.S.Cai Yang Liu
School of Civil Engineering and Architecture, Changsha University of Science & Technology, Changsha School of Civil Engineering and Architecture, Changsha University of Science & Technology, Changsha
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
631-636
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）