STUDY ON APPLICABILITY OF RESIDUAL FREE-VIBRATION METHOD IN MEASURING NATURAL FREQUENCIES OF BRIDGE PIERS
The natural frequencies of railway piers can be obtained by residual free-vibration method (RFVM) because it is simple in theory and easy to implement in field measurements. However, there remain many problems in this method in its practical application. In recent years, the impact vibration test method (IVTM) has emerged as a new method to measure the frequencies of railway piers and has been proved to be effective and precise in frequency identification. In this paper, by comparing the identified frequencies of the same piers with RFVM and IVTM respectively, the problems of RFVM and the difficulties in application are pointed out. Furthermore, the main influence factors of identification results by RFVM are quantitatively analyzed.
J.W. Zhan H. Xia J.B. Yao N. Zhang
School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, P.R. China
国际会议
长沙
英文
172-178
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）