关于高土坝地震反应分析中阻尼模型的讨论

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英文篇名：Discussion on damping models for seismic response analysis of high earth dams 中文刊名：水力发电学报 英文刊名：Journal of Hydroelectric Engineering 作者：楼梦麟 ; 殷琳 英文作者：LOU Menglin ; YIN Lin(State Key Laboratory for Disaster Reduction in Civil Engineering ; Tongji University ; Shanghai 200092) 中文关键词：水工结构 ; 高土坝地震反应 ; 阻尼模型 ; 时程分析 ; 转换频率 英文关键词：hydraulic structure ; seismic response of high earth dam ; damping model ; time history analysis ; translation frequency 出版日期：2009-10-25 机构：同济大学土木工程防灾国家重点实验室; 年：2009 期：05 出版单位：水力发电学报

摘要

主要讨论了不同阻尼模型对高土坝地震反应计算误差的影响。首先,通过理论分析,说明了土石坝地震反应分析采用常用阻尼模型的局限性。然后,运用有限元方法,分别用基于转换频率和土坝基频的两种阻尼模型对高土坝进行时域内的线性地震反应计算。最后,和频域内计算结果进行对比,分析了不同阻尼模型对计算结果精度的影响。
This paper discusses the effect of different damping models on the seismic response analysis accuracy of high earth dams.First a theoretical analysis is used to show the limitation of traditional damping model.Then seismic response computations are presented for six earth dams of different height with two damping models,the translation frequency model and the dam's fundamental frequency model.Finally a comparison of the results by the time-domain method and by the frequency-domain method is given to show the difference of damping models.

引文

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