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| Research on the Deformation Law of Supporting Structure for Deep Foundation Pit of Metro Station |
| REN Jian-xi1, FENG Xiao-guang1, LIU Hui1, QIN Xing-chun2 |
| 1. Xi’an University of Science & Technology, Xi'an, Shanxi 710054, China; 2. Northwest Research Institute of Engineering Investigation and Design, Xi'an, Shanxi 710003, China |
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Abstract Research purposes：Taking deep excavation engineering in the north region of Forest Station on the Olympic branch line of Beijing Subway as an example, the deformation law of enclosure structure for deep foundation pit is studied by the in-site monitoring means for the purpose of providing the reference to optimizing the design and construction of similar engineering.
Research conclusions：The maximal horizontal displacement of retaining pile is closely related with excavation depth and time. The horizontal displacement of the pile tops is the biggest when the deep foundation pit is excavated to a certain depth and steel brace has not been erected. With excavation of foundation and erection of the steel brace, the location of the biggest horizontal displacement shifts down. With increase of steel brace, the steel axis force decrease, so steel brace can effectively control horizontal displacements of retaining pile and internal force of steel in the pile. In addition, temperature has a certain effect on the axis force of steel brace.
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Received: 03 November 2008
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[ 1 ] 张明聚, 由海亮, 杜修力. 北京地铁某车站明挖基坑施工监测分析[J]. 北京工业大学学报, 2006, 32(10): 874-878.
[ 2 ] 张思峰, 周健, 贾敏才, 等. 深基坑施工的现场监测及其时空效应分析[J]. 建筑结构, 2007, 37(6): 53-55.
[ 3 ] 杨贵生, 李雨润, 李雨辰. 超深基坑支护开挖对土体变形影响数值模拟研究[J]. 铁道工程学报, 2008(6): 32-35.
[ 4 ] 郭建强, 龚洪祥, 李俊才, 等. 地铁车站深基坑施工对临近建筑物影响的控制[J]. 建筑科学, 2008, 24(9): 91-95.
[ 5 ] 高盟, 高广运, 冯世进, 等. 基坑开挖引起紧贴运营地铁车站的变形控制研究[J]. 岩土工程学报, 2008, 30(6): 818-823.
[ 6 ] 徐杨青. 深基坑工程设计的优化原理与途径[J]. 岩石力学与工程学报, 2001, 20(2): 248-251.
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2009, Vol. 26 
