| 北京地铁四号线宣武门站下穿运营车站沉降控制综合施工技术 |
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| 引用本文： | 刘蕾,尹亚坡. 北京地铁四号线宣武门站下穿运营车站沉降控制综合施工技术[J]. 隧道建设, 2009, 29(1): 112-119 |
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| 作者姓名： | 刘蕾 尹亚坡 |
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| 作者单位： | 中铁隧道集团二处有限公司北京地铁四号线07标项目部 |
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| 摘 要： | 针对新建地铁车站下穿既有运营车站的工程特点，以控制沉降为核心，分别从管棚超前支护、开挖与初期支护、结构二次衬砌3个环节阐述宣武门车站下穿运营车站的沉降控制综合施工技术。大管棚施工采用国内先进的夯管工艺，配以袖阀式及分段后退式注浆技术措施；开挖前采用帷幕注浆，开挖、初期支护及二次衬砌期间采用全过程跟踪补偿注浆；开挖与初期支护期间采取加强措施改善平顶直墙结构的不利受力状态；二次衬砌创造性地采取分幅施作方案，以部分二衬结构代替支撑。通过实施一系列的技术措施，最终使既有运营车站的结构最大沉降仅为6.78mm，完全满足设计要求。
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| 关 键 词： | 宣武门站 下穿运营车站 沉降控制 |
| 收稿时间： | 2008-10-27 |
Comprehensive Construction Techniques for Settlement Control of Xuanwumen Metro Station Crossing Underneath Existing Metro Station on No.4 Line of Beijing Metro |
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| LIU Lei,YIN Yapo. Comprehensive Construction Techniques for Settlement Control of Xuanwumen Metro Station Crossing Underneath Existing Metro Station on No.4 Line of Beijing Metro[J]. Tunnel Construction, 2009, 29(1): 112-119 |
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| Authors: | LIU Lei YIN Yapo |
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| Affiliation: | The 2nd Engineering Co., Ltd. of China Railway Tunnel Group |
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| Abstract: | Xuanwumen Metro Station on No.4 Line of Beijing Metro crosses underneath existing Metro station,therefore settlement control is the key point in the construction of this project.This paper presents the comprehensive construction techniques for settlement control in construction of Xuanwumen Station from the following three aspects: advance pipe-roof support,excavation and primary support,and secondary support lining of tunnel structure.Nationally-advanced pipe-ramming construction technology assisted by sle... |
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| Keywords: | Xuanwumen Metro Station crossing underneath existing Metro station settlement control |
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