| 土石坝动力分析中的阻尼模型研究 |
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| 引用本文： | 陶警圆,田强. 土石坝动力分析中的阻尼模型研究[J]. 水利与建筑工程学报, 2012, 10(5): 128-131 |
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| 作者姓名： | 陶警圆 田强 |
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| 作者单位： | 大连理工大学土木水利学院,辽宁大连,116024 |
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| 摘 要： | 阻尼模型对土石坝动力计算结果有着很重要的影响，各种响应都是阻尼的函数，能否正确估计阻尼，直接影响到结构动力分析结果的可靠性。目前在工程实际应用中，阻尼系数大多只考虑土石坝的自振特性。通过分析表明，地震波频率特性对土石坝地震响应有着重要的影响，尤其对高土石坝影响更大。通过探讨几种考虑地震动频率特性的现有的阻尼模型，为土石坝动力计算中阻尼模型的选取提出建议。
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| 关 键 词： | 土石坝 阻尼模型 时程分析 地震反应 频谱特性 |
Research on Damping Models in Dynamic Analysis of Earth-rock Dams |
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| TAO Jing-yuan,TIAN Qiang. Research on Damping Models in Dynamic Analysis of Earth-rock Dams[J]. Journal of Water Resources Architectural Engineering, 2012, 10(5): 128-131 |
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| Authors: | TAO Jing-yuan TIAN Qiang |
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| Affiliation: | (College of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China) |
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| Abstract: | The selection of damping models has great influence to the dynamic analysis of earth-rock dams.All the responses of dams are the function of damping,so damping estimation would directly affect the reliability of dynamic analysis results.At present,only the free vibration characteristic of earth-rock dams is considered in the calculation of damping coefficient in engineerings.Analysis shows that the frequency characteristic of earthquake wave would have great influence on the earthquake response of earth-rock dams,especially on high ones.Finally several damping models considering the frequency characteristic of earthquake wave are discussed,giving suggestions to the selection of damping models in the dynamic analysis of earth-rock dams. |
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| Keywords: | earth-rock dam damping model time-history analysis earthquake response spectrum characteristics |
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