| 层状地基对土坝振动模态特性的影响 |
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| 引用本文： | 楼梦麟,林皋.层状地基对土坝振动模态特性的影响[J].大连理工大学学报,1985(4). |
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| 作者姓名： | 楼梦麟 林皋 |
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| 作者单位： | 大连工学院抗震研究室
(楼梦麟)，大连工学院抗震研究室(林皋) |
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| 摘 要： | 文中首先根据波动方程求解粘弹性层状地基的动力刚度矩阵．然后分析层状地基 对均质土坝摸态特性的影响，最后讨论相似坝之间模态特性的相似关系．数值结果表 明：地基与坝体的弹模之比、坝高与层厚之比和外界激振频率与坝体基频之比是坝基 动力相互作用中的三个重要影响因素．
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| 关 键 词： | 层状地基 土坝 振动模态 动力相互作用 |
The Effects of Layered Foundation on Mode Characteristics of Earth Dams |
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| Lou Menglin,Lin Gao.The Effects of Layered Foundation on Mode Characteristics of Earth Dams[J].Journal of Dalian University of Technology,1985(4). |
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| Authors: | Lou Menglin Lin Gao |
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| Institution: | The Anti-Earthquake Engineering Group of DIT |
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| Abstract: | Firstly, based on the wave equations, dynamic impedance matrix of layered viscoelastic foundation is derived. Than, the effects of the layered foundation on mode characteristics of earth dams are studied. Finally, the similarities of the mode characteristics of similar dams are discussed. Tue numerical results show that, the ratio of elastic modulus between earth dam and foundation, the ratio between dam height and layer thickness, as well as the ratio between exciting frequency and foundational frequency of earth dam are three important factors in dam-foundation interaction. |
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| Keywords: | layered foundation earth dam vibration mode characteristics dynamic interaction |
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