| 某水利枢纽电站厂房基坑岩体位移变形有限元分析 |
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| 引用本文： | 丰定祥,杨家岭,葛修润.某水利枢纽电站厂房基坑岩体位移变形有限元分析[J].岩土工程学报,1980,2(1):43-54. |
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| 作者姓名： | 丰定祥 杨家岭 葛修润 |
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| 作者单位： | 中国科学院武汉岩体土力学研究所； |
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| 摘 要： | 某水利枢纽电站厂房基坑在开挖过程中发现了明显的岩层错动,除了有较大的瞬时变形外,错动量还随着时间逐渐增长.本文采用有限元分析方法来模拟整个施工开挖过程,计算结果与现场变形观测和地应力测量等资料吻合较好,从而说明了地应力的存在以及基坑开挖的卸荷过程是造成这种错动的主要原因.本文还通过多种计算方案比较对地应力大小和分布、不同地质条件对基坑变形的影响等问题都进行了探讨.至于对与时间因素有关的岩体流变特性准备另文讨论,这里暂不考虑.
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| 关 键 词： | 软弱夹层 岩体位移 电站厂房 地应力测量 水利枢纽 机窝 裂隙单元 基本方案 有限元分析 动量 |
Finite Element Analysis for Rock Displacement of Foundation Pit of a Water Power Plant |
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| Feng Ding-xiang,Yang Jia-ling and Ge Xiu-run.Finite Element Analysis for Rock Displacement of Foundation Pit of a Water Power Plant[J].Chinese Journal of Geotechnical Engineering,1980,2(1):43-54. |
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| Authors: | Feng Ding-xiang Yang Jia-ling and Ge Xiu-run |
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| Affiliation: | Institute of Rock and Soil Mechanics, Academia Sinica, Wuhan |
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| Abstract: | Significant slide of rock layer occured during excavating foundation pit of a water power plant. In addition to large instantaneous deformation, the slide increased with time. Finite element analysis was adopted in this paper to simulate the whole excavation stage. The calculation results agreed fairly well with in-situ measurement including deformation and residual stress in rock.Rheological properties of rock is omitted in this paper and a subsequent article on this subject is now to be prepared. |
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