| 强震作用下重力坝考虑辐射阻尼的一种简单模型 |
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| 引用本文： | 潘坚文,Chongmin Song,张楚汉.强震作用下重力坝考虑辐射阻尼的一种简单模型[J].水利学报,2010,41(4). |
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| 作者姓名： | 潘坚文 Chongmin Song 张楚汉 |
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| 作者单位： | 1. 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
2. School,of,Civil,and,Environmental,Engineering,University,of,New,South,Wales,Sydney,NSW,2052,Australia |
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| 基金项目： | 国家自然科学基金重点项目，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 提出一种在强震作用下重力坝考虑地基辐射阻尼效应的动力反应的简单模型,该模型在无质量地基模型的坝体-地基交接面设置黏性阻尼器,并通过大量的计算统计确定阻尼器的系数。计算了100m级和200m级重力坝在不同频谱地震、不同地基弹性模量条件下的地震响应,结果表明,简单模型和弹簧-阻尼边界模型结果接近,误差在8%内。
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| 关 键 词： | 重力坝 地震 辐射阻尼 弹簧－ 阻尼边界 |
Simple model for gravity dam response considering radiation damping effects |
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| PAN Jian-wen and ZHANG Chu-han.Simple model for gravity dam response considering radiation damping effects[J].Journal of Hydraulic Engineering,2010,41(4). |
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| Authors: | PAN Jian-wen and ZHANG Chu-han |
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| Affiliation: | PAN Jian-wen1,Chongmin Song2,ZHANG Chu-han1(1.Tsinghua University,Beijing,China 100084,2.University of New South Wales,Sydney,NSW 2052,Australia) |
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| Abstract: | A simple model considering radiation damping is presented to analyze seismic response of gravity dams.Viscous dampers are installed on the dam-foundation interface in the massless foundation model and the damper coefficients are determined by statistical calculations with various parameters.The effects of different spectral earthquakes,different dam heights and variable ratio of the modulus of elasticity between the foundation and the dam concrete are considered.The results show that the dam response,includ... |
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| Keywords: | gravity dam earthquake radiation damping viscous-spring boundary |
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