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论文类型：期刊论文

发表时间：2009-08-01

发表刊物：COASTAL ENGINEERING

收录刊物：SCIE、EI

卷号：56

期号：8

页面范围：810-830

ISSN号：0378-3839

关键字：Wavelet transform; Platform; Multi-component seismic response

摘要：A wavelet energy method is presented to search the critical incidence of earthquake excitation in a multidimensional seismic response of offshore platforms. The total effective energy and the instantaneous effective energy input rate of an earthquake can be obtained by wavelet transformation to predict the critical incidence of the earthquake and then the maximum dynamic response of the platform can be calculated. The critical incidence is determined using this method for an actual platform and a group of single degree-of-freedom systems. Numerical results show that the application of wavelet transform in a multi-dimensional seismic response of structures is convenient and reliable. (C) 2009 Elsevier B.V. All rights reserved.