| 北京地铁10号线光华路站桩基础控制地表沉降 |
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| 引用本文： | 宋卫东,冯瑞芳,马伟斌.北京地铁10号线光华路站桩基础控制地表沉降[J].中国铁道科学,2011,32(4). |
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| 作者姓名： | 宋卫东 冯瑞芳 马伟斌 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083
2. 中国铁道科学研究院铁道建筑研究所,北京,100081 |
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| 基金项目： | “十一五”国家科技支撑计划资助项目(2006BAB02A02) |
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| 摘 要： | 以北京地铁10号线光华路站为工程背景,根据车站中洞标准断面设计图和工程地质情况,采用有限元软件ANSYS建立其三维仿真计算模型,进行洞桩法施工过程中桩基础结构受力、周围地层土体的应力、位移变化以及地表沉降研究。结果表明:在地铁车站洞桩法整个施工阶段引起的地表沉降累计为14.8 mm,说明合格的桩基础可以将地表沉降量控制在小于30 mm规范要求之内;上部拱部土体开挖阶段引起的地表沉降量为6.7 mm,占地表沉降总量的45.0%,说明拱部开挖是整个施工过程的关键环节;施工过程中要加强拱顶超前管棚的等级和及时性,采取有效措施对拱部地层进行预加固或预支护处理,有效控制地表沉降和保证施工安全。
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| 关 键 词： | 地铁车站 施工 洞桩法 桩基础 地表沉降 |
The Ground Surface Subsidence Control in the Pile Foundation Construction of Guanghua Road Station on Beijing Metro Line 10 |
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| SONG Weidong,FENG Ruifang,MAWeibin.The Ground Surface Subsidence Control in the Pile Foundation Construction of Guanghua Road Station on Beijing Metro Line 10[J].China Railway Science,2011,32(4). |
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| Authors: | SONG Weidong FENG Ruifang MAWeibin |
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| Institution: | SONG Weidong1,FENG Ruifang1,MA Weibin2(1.School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China,2.Railway Engineering Research Institute,China Academy of Railway Sciences,Beijing 100081,China) |
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| Abstract: | Based on the engineering background of Guanghua Road Station on Beijing Metro Line 10,this paper mainly concentrates on the culvert pile method's relevant situation,builds a relatively accurate three dimension virtual calculation model using the great finite element software ANSYS. Study was conducted on the stress change of pile foundation,stress-displacement change of the surrounding soil mass and ground surface subsidence in the course of culvert pile method construction.The results indicate that,firstly... |
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| Keywords: | Subway station Construction Culvert pile method Pile foundation Ground surface subsidence |
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