- 基于相位差谱的多点激励人工波数值生成算法研究
- 点击次数：
- 论文类型： 期刊论文
- 发表时间： 2022-06-29
- 发表刊物： 大连理工大学学报
- 所属单位： 建设工程学部
- 期号： 4
- 页面范围： 558-563
- ISSN号： 1000-8608
- 摘要： 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.
- 备注： 新增回溯数据
