期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：3
页码：032045
DOI：10.1088/1755-1315/199/3/032045
语种：English
出版社：IOP Publishing
摘要：This paper introduces two new methods-William B.B. perturbation method and Rayleigh quotient method-into damage identification of local unit of bridges. Taking the structure of a truss bridge as the practical example, the author made detailed analysis of these two methods' function in damage identification by programming the corresponding calculation process and adding vibration noise to the identification process. The results showed that William B.B. method could more easily generate the perturbation accuracy values and that Rayleigh quotient method had the advantage of higher identification accuracy, simpler calculation and better resistance to noise.
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