| 北京地铁义和庄站基坑支护结构及变形监测 |
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| 引用本文： | 常江,张君.北京地铁义和庄站基坑支护结构及变形监测[J].中国安全生产科学技术,2009,5(3). |
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| 作者姓名： | 常江 张君 |
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| 作者单位： | 1. 北京住总市政工程有限责任公司,北京100029;清华大学土木工程系,北京100084
2. 清华大学土木工程系,北京,100084 |
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| 摘 要： | 结合北京地铁义和庄站深基坑支护变形监测方案,并通过大量实测数据对基坑的水平变形、钢支撑和锚索拉力变化规律进行了研究;并比较排桩、内支撑与排桩、锚索两种支护形式的变形差异.监测结果表明:围护结构的变形增量主要发生在基坑深层土体开挖及支撑结构架设前后阶段,在开挖至坑底后变形趋于稳定;支撑内力增加影响因素较多,包括地面堆载及温度影响;围护结构变形与支撑轴力变化具有显著的关联性;桩撑与桩锚支护结构的变形具有一定的差异性.
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| 关 键 词： | 地铁 深基坑 支护 监测 变形 |
Support structure and deformation monitoring of excavation pit in Yihezhuang station of Beijing subway |
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| CHANG Jiang,ZHANG Jun.Support structure and deformation monitoring of excavation pit in Yihezhuang station of Beijing subway[J].Journal of Safety Science and Technology,2009,5(3). |
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| Authors: | CHANG Jiang ZHANG Jun |
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| Institution: | 1.Municipal Ingineering Co.;Itd.;Beijing Housing Group;Beijing 100029;China;2.Department of civil Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | This paper presents an in-situ instrumentation and deformation monitoring research for a deep foundation pit in Beijing subway Yihezhuang station. A large number of field-tested data of the pit horizontal deformation,the steel support forces and cable tension variation were measured and studied. The difference of defamation behavior for both anchored-pile walls and steel tube-supported pile walls were investigated in detail. The monitoring results showed that the incremental deformation mainly occurs during... |
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| Keywords: | subway station deep excavation pit support monitoring deformation |
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