| 基于相位差谱的多点激励人工波数值生成算法研究 |
| |
| 引用本文： | 李建波,陈健云,高冲.基于相位差谱的多点激励人工波数值生成算法研究[J].大连理工大学学报,2009,49(4):558-563. |
| |
| 作者姓名： | 李建波 陈健云 高冲 |
| |
| 作者单位： | 1. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;大连理工大学,工程抗震研究所,辽宁,大连,116024
2. 大连理工大学,工程抗震研究所,辽宁,大连,116024 |
| |
| 基金项目： | 国家自然科学基金资助项目(50679006,90510018,50809013);;辽宁省工程防灾减灾重点实验室研究基金资助项目(DPMKL2008004) |
| |
| 摘 要： | 在三角级数时域合成与快速离散傅里叶变换频域调整算法的基础上,实现基于对数正态分布相位差谱的单点激励人工波的数值生成,着重分析了目标反应谱的迭代拟合技术.结合相关建筑标准中所列地震波,给出了四类场地土的相位差谱统计特征,以利于工程采用.并以描述频谱幅值衰减关系的相干函数与以相位表征的行波效应为条件,实现多点激励地震波的数值生成.同时考虑幅值与相位两因素,保证了多点激励地震波在相邻两近点处的地震位移曲线的一致性合理条件.
|
| 关 键 词： | 人工波 相位差谱 多点激励 相干函数 行波效应 |
Research on numerical generation algorithms of multi-support excitation artificial seismic waves based on phase difference spectrum |
| |
| LI Jianbo,CHEN Jianyun,GAO Chong.Research on numerical generation algorithms of multi-support excitation artificial seismic waves based on phase difference spectrum[J].Journal of Dalian University of Technology,2009,49(4):558-563. |
| |
| Authors: | LI Jianbo CHEN Jianyun GAO Chong |
| |
| Institution: | LI Jian-bo1,2,CHEN Jian-yun1,GAO Chong21.State Key Laboratory of Coastal , Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.Earthquake Engineering Research Division |
| |
| 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... |
| |
| Keywords: | artificial seismic wave phase difference spectrum multi-support excitation coherence function traveling wave effect |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《大连理工大学学报》浏览原始摘要信息 |
| 点击此处可从《大连理工大学学报》下载免费的PDF全文 |
|
