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Indexed by:期刊论文

Date of Publication:2022-06-29

Journal:大连理工大学学报

Affiliation of Author(s):建设工程学部

Issue:4

Page Number:558-563

ISSN No.:1000-8608

Abstract:According to the phase difference spectrum under log-normal distribution,artificial seismic wave for single-support excitation is firstly numerically generated by utilizing the synthesis technique of time-domain trigonometric series and frequency-domain DFFT,for which the iterative procedure is discussed in detail to make the fitting response spectrum consistent with the aim response spectrum.To meet the needs in engineering practice,statistical characteristics of phase difference spectrum are presented for four various ground conditions by analyzing the seismic waves listed in the related construction criterion for earthquake engineering.Furthermore,under the conditions of both coherence function in amplitude spectrum and traveling wave effect in phase spectrum,an advanced numerical generation method for the artificial seismic waves for multi-support excitation is proposed by expanding the single-point excitation wave.Surely,it can be numerically ensured for the displacement convergence among those near sites along the seismic propagating way by considering both the two effects of amplitude and phase.

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