| 天津地铁3号线和平路站超大基坑中间桩柱施工技术 |
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| 引用本文： | 孟庆军.天津地铁3号线和平路站超大基坑中间桩柱施工技术[J].施工技术,2011,40(1). |
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| 作者姓名： | 孟庆军 |
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| 作者单位： | 中铁隧道股份有限公司,河南郑州,450003 |
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| 摘 要： | 中间桩柱施工技术是地下结构逆作法的关键,尤其是在超大深基坑盖挖逆作施工中,中间桩柱施工对结构的安全稳定性至关重要。结合天津地铁3号线和平路站工程实例,介绍了盖挖逆作法中间桩柱的施工方法及控制要点。通过方案比选,采用先插钢构柱的方法进行施工,详细阐述了钢构柱的加工与定位安装、成孔精度与泥浆控制及混凝土浇筑。工程实践证明,该施工方法定位简便、施工时间短、工程造价较低。
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| 关 键 词： | 地铁车站 超大深基坑 中间桩柱 逆作法 成孔精度 施工技术 |
Construction Technology of Intermediate Pile and Column of Supper-large Foundation Excavation in Heping Road Station of Tianjin Metro Line 3 |
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| Meng Qingjun.Construction Technology of Intermediate Pile and Column of Supper-large Foundation Excavation in Heping Road Station of Tianjin Metro Line 3[J].Construction Technology,2011,40(1). |
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| Authors: | Meng Qingjun |
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| Abstract: | Construction technology of intermediate pile and column is very important to the structure safety and stability,especially in super-large deep foundation excavation with top-down method.Based on the construction of Heping Road Station in Tianjin Metro Line 3,construction technique and control points of intermediate pile and column of cover and excavation top-down method are introduced.According to scheme comparison,method of inserting steel latticed column first is adopted.Processing and positioning erectio... |
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| Keywords: | metro station super-large deep foundation excavation intermediate pile and column top-down method pore-forming precision construction technology |
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