| 王淮峰,楼梦麟,张如林.加权最小二乘法求解Rayleigh阻尼系数的讨论[J].计算力学学报,2017,34(5):603~607 |
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| 加权最小二乘法求解Rayleigh阻尼系数的讨论 |
| Discussion on weighted least-squares method for solving Rayleigh damping coefficients |
| 投稿时间：2016-08-01 修订日期：2016-11-27 |
| DOI：10.7511/jslx201705011 |
| 中文关键词: Rayleigh阻尼矩阵 比例系数 深覆盖土层 地震响应 时程分析 |
| 英文关键词:Rayleigh damping matrix damping parameters soil layers with deep deposit seismic response time-history analysis |
| 基金项目:国家自然科学基金（51608462，51408609）；福建省教育厅资助（JAT160349）；厦门理工学院高层次人才（YKJ15011R）资助项目. |
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| 中文摘要: |
| 合理确定Rayleigh阻尼矩阵比例系数对于准确计算场地地震响应有重要影响。本文提出以|H|i2|H|'i2|A|i2为权重系数，采用加权最小二乘法求解Rayleigh阻尼矩阵比例系数，以提高土层地震反应时程分析的计算精度。以上海某处地质剖面建立深覆盖土层有限元模型，计算其在28条各具代表性的基岩场地地震波激励下的动力反应，与其他研究成果对比分析，验证本文方法的精度及适用性。 |
| 英文摘要: |
| The appropriate determination of Rayleigh confficients for the damping matrix is significant for accurate analysis of soil layers with deep deposit.|H|i2|H|'i2|A|i2 was proposed to be the weighting coefficient of weighted least-squares method,which is widely used to obtain Rayleigh damping coefficients,to enhance computation accuracy of time-history analysis of seismic response of soil model.Dynamic response of a typical soil model with deep deposit,exciting by 28 typical seismic waves,was analyzed to verify the accuracy and applicability of the proposed method. |
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