| 超大型基坑逆作法施工引起的地表沉降 |
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| 引用本文： | 王梅,李镜培.超大型基坑逆作法施工引起的地表沉降[J].港工技术,2012,49(4):51-53,67. |
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| 作者姓名： | 王梅 李镜培 |
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| 作者单位： | 同济大学地下建筑与工程系岩土及地下工程教育部重点实验室,上海,200092 |
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| 基金项目： | 基金项目：上海市科委科技攻关计划（10231200500） |
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| 摘 要： | 借助有限差分软件模拟某工程超大型基坑逆作法施工后的地表沉降,分析基坑平面尺寸和地下连续墙的深度、宽度及弹性模量等因素对地表沉降的影响,模型计算结果显示超大型基坑到沉降收敛点的距离应至少为基坑最大挖深的8倍,该结果大于以往文献中关于基坑到沉降收敛点的距离为基坑最大挖深4倍的建议值.
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| 关 键 词： | 超大型基坑 地下连续墙 逆作法施工 地表沉降 基坑最大挖深 |
Ground Settlement Caused by Top-down Construction Method of Ultra-large Foundation Ditch |
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| Wang Mei
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Li Jingpei.Ground Settlement Caused by Top-down Construction Method of Ultra-large Foundation Ditch[J].Port Engineering Technology,2012,49(4):51-53,67. |
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| Authors: | Wang Mei Li Jingpei |
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| Institution: | (Department of Geotechnical Engineering, Key Laboratory of Geotechnical and Underground of Ministry of Education, Tongji University, Shanghai 200092, China) |
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| Abstract: | We use finite difference software to simulate ground settlement caused by top-down construction of ultra-large foundation ditch, analyze the impact on ground settlement by plane sizes of the foundation ditch, depth, width and elastic modulus of the diaphragm wall. The model calculation results show that the distance from ultra-large foundation ditch to settlement convergence should be at least 8 times of maximum foundation ditch depth, which is larger than the suggested value in previous documentation, i.e. the distance from foundation ditch to settlement convergence is 4 times of maximum foundation ditch depth. |
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| Keywords: | ultra-large foundation ditch concrete diaphragm wall top-down construction method ground settlement maximum depth of foundation ditch |
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