DYNAMIC ASSESSMENT OF UNDERWATER PIPELINE SYSTEMS USING FINITE ELEMENT MODEL UPDATING
This study is to develop a method to identify the bedding condition using model updating technique. Laboratory tests are carried out to verify the reliability of the method. Laboratory study is carried out on a scaled model of the pipeline system in a towing tank. The model includes a plastic pipe and some removable springs which are designed and fabricated to link the pipe and the steel base to simulate the bedding condition. Different damage scenarios, such as different location and severity of scour under the pipe, were introduced by pulling out one or several springs. The natural frequencies, damping ratios and mode shapes are extracted from the measured responses using stochastic subspace identification technique. Experimental results show that the method is effective and reliable to identify the underwater pipeline bedding conditions.
X.Q. Zhu H. Hao X.L. Peng L. Cheng
CRC for Integrated Engineering Asset Management School of Civil and Resource Engineering, the University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia
国际会议
长沙
英文
663-669
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）