| 拱坝—地基体系的多点输入虚拟激励法及随机响应分析 |
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| 引用本文： | 陈健云,林皋.拱坝—地基体系的多点输入虚拟激励法及随机响应分析[J].上海力学,1999,20(1):76-81. |
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| 作者姓名： | 陈健云 林皋 |
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| 作者单位： | 大连理工大学土木工程系，大连理工大学土木工程系 大连 116023，大连 116023 |
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| 摘 要： | 本文采用等效地基集总参数模型，推导了拱坝－地基体系多点输入随机分析的虚拟激励法对拱坝－地基动力相互作用体系在多点随机输入地震波作作下的随机的响应进行 分析，讨论了局部场地的散射效应及地震动空间相干性质损失对拱坝随机响应的影响。
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| 关 键 词： | 结构－地基 动力体系 多点输入 随机分析 拱坝 |
RANDOM RESPONSE ANALYSIS OF DAM-FOUNDATION SYSTEM AND PSEUDO-EXCITATION METHOD |
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| Chen Jianyun Lin Gao.RANDOM RESPONSE ANALYSIS OF DAM-FOUNDATION SYSTEM AND PSEUDO-EXCITATION METHOD[J].Chinese Quarterly Mechanics,1999,20(1):76-81. |
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| Authors: | Chen Jianyun Lin Gao |
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| Institution: | Dalian University of Technology. Dalian 116023 |
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| Abstract: | In this paper, the pseudo-excitation method based on equivalent mode of lumped parameters for the random response analysis of dam-foundation dynamic system is derived. In which, the seismic amplification produced by canyon and the spatial coherence loss has been taken into consideration. The numerical results show that the severe stress concentration is at the boundary of the arch dam, and causes of which are also analyed throughout the entire procedure. |
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| Keywords: | structure-foundation interaction random analysis model of lumped parameters multiinput pseudo-excitation method |
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