| 基坑降水开挖对邻近群桩的影响及控制对策 |
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| 引用本文： | 章荣军,郑俊杰,丁烈云,吴贤国.基坑降水开挖对邻近群桩的影响及控制对策[J].华中科技大学学报(自然科学版),2011(7):113-117. |
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| 作者姓名： | 章荣军 郑俊杰 丁烈云 吴贤国 |
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| 作者单位： | 华中科技大学岩土与地下工程研究所;华中科技大学工程管理研究所; |
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| 基金项目： | 武汉市科技攻关计划资助项目(200860423194); 新世纪优秀人才支持计划资助项目(NCET-06-649) |
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| 摘 要： | 以武汉地铁2号线循礼门车站下穿轻轨桥墩段为依托,采用考虑流固耦合作用的三维数值模拟方法探讨了深基坑降水开挖对邻近桩基的影响规律,并对几种措施的位移控制效果进行了分析;然后着重论述了被动区加固参数对桩基位移的影响.结果表明:通过优化降水方案来控制邻近桩基变形的效果比较明显;隔离桩、主动区加固和被动区加固都能一定程度地抑制桩基的水平位移,相比而言,被动区加固的效果更佳;被动区加固深度存在临界范围,加固体所在深度与最大水平位移出现的深度一致为宜.
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| 关 键 词： | 基坑 群桩 隔离桩 主动区加固 被动区加固 控制效果 |
Influence of dewatering and excavation of foundation pits on adjacent pile groups and its control measures |
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| Zhang Rongjun Zheng Junjie Ding Lieyun Wu Xianguo.Influence of dewatering and excavation of foundation pits on adjacent pile groups and its control measures[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(7):113-117. |
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| Authors: | Zhang Rongjun Zheng Junjie Ding Lieyun Wu Xianguo |
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| Institution: | Zhang Rongjun Zheng Junjie Ding Lieyun Wu Xianguo(a Institute of Geotechnical and Underground Engineering,b Institute of Construction Management,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Based on the deep foundation pit of Xunlimen Station of Wuhan Metro Line 2,which underneath passes the viaduct of Wuhan LRT(light rail transit),a three-dimensional elastic-plastic numerical simulation model,in which the coupling effect of fluid-soil interaction was considered,was established.The influence of the dewatering and excavation of foundation pits on adjacent pile groups was calculated and analyzed.Then the effects of common control measures were compared.This numerical model was employed to analyz... |
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| Keywords: | foundation pit pile groups strengthening pile active zone improving passive zone improving control effect |
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