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| Application of CRD + Top - bracing Control Technology in Close - attached Under - crossing Engineering |
| TAO Lian-jin1，LI Ji-dong1, WANG Guo-feng2 |
| 1. Beijing University of Technology, Beijing 100124, China； 2. Beijing Rail Transit Construction and Management Co. Ltd, Beijing 100037,China |
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Abstract Research purposes： With the powerful development of the urban rail transit, three are more and more new tracks to cross the existing track engineering. However，it is difficult for the traditional construction technology to control the settlement of the existing structures and it needs higher cost. In this paper, combined with the construction of the Gongzhufen Station of the Line 10 of Beijing metro to under - cross the Gongzhufen Station of the Line 1，the introduction is given to the construction technology that is available for effective control of the settlement of the existing structure with the appropriate cost to provide the reference to the similar works.
Research conclusions ： (1) The settlement of the bottom plate structure of the existing station is affected by the release of stress of the working face, the disturbance to bottom during excavation，the excavation height，the long closure time of the primary support structure and no timely jacking of the jack，and the release of the stress of the working face is the main reason for the settlement of the existing structure. (2) The settlement of the existing structure can be effectively controlled by taking the measures of adding the temporary columns and jacks，reinforcing the foundation base with steel frame, grouting to the back of the primary support with extreme fine cement paste and jacking up by jacks, and the jacking up by the jacks is the most powerful means to control the settlement. (3 ) The CRD + top brace control technology is available for effective control of the settlement of the existing station and meet the settlement of 3 mm.
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Received: 19 March 2013
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[1]李兆平,李铭凯,黄庆华.南京地铁车站下穿既有铁路站 场施工技术研究[J].岩石力学与工程学报,2005 ( 6): 1061 -1066.
Li Zhaoping, Li Mingkai, Huang Qinghua. A study of Construction Technique for the Naming Subway Station under the Nanjing Railway Station[ J]. Chinese Journal of Rock Mechanics and Engineering，2007(2) ：4209 - 4213.
[2]王占生，张顶立.浅埋暗挖隧道近距下穿既有地铁的关键 技术[J].岩石力学与工程学报，2007(2) :4209 - 4213.
Wang Zhansheng, Zhang Dingli. Key Techniques on Shallow Embedded Tunnel Constructed Beneath Existing Subway Tunnel [ J ] ? Chinese Journal of Rock Mechanics and Engineering, 2007(2) ：4209 - 4213.
[3]李鹏飞，张顶立，房倩,等.变位分配原理在隧道穿越建 筑物施工中的应用研究[J].北京工业大学学报，2009 (10)； 1344-1349.
Li Pengfei, Zhang Dingli，Fang Qian. Study on Deformation Distributing Principle Used in Construction of Tunnel Passing Through Existing Structures [ J ]. Journal of Beijing University of Technology, 2009(10)： 1344-1349.
[4]陈孟乔，杨广武.新建地铁车站近距离穿越既有地铁隧道的变形控制[J].中国铁道科学,2011 (4) :53 -59.
Chen Mengqiao, Yang Guangwu. Deformation Control of a Newly - built Subway Station Crossing the Adjacent Existing Subway Tunnel [J]. China Railway Science, 2011(4) ；53 - 59.
[5]蔺云宏,李冀伟，王飞.暗挖地铁隧道斜交下穿既有铁路 的施工研究[J ].铁道工程学报,2012 (11)：82-86.
Lin Yunhong, Li Yiwei, Wang Fei. Study on Construction of Subsurface Excavated Metro Tunnel Under - passing Existing Railway [ J ]. Journal of Railway Engineering Society, 2012(11) ；82 -86.
[6]吴海洋.北京地铁新线车站穿越既有地铁车站影响及安 全控制措施研究(博士论文）[D].北京:北京交通大学， 2005
Wu Halyang. Research on Impact and Safety Control Measures of Beijing Newly Built Subway Station Crossing the Existing Subway Station [D]. Beijing； Beijng Jiaotong University,2005.
[7]北京城建设计研究总院有限责任公司.公主坟站下穿既 有线站设计方案汇报[R].北京：北京城建设计研究总 院有限责任公司,2011.
Beijing Urban Engineering Design & Research Institute Co. Ltd. Gongzhufen Station Under - cross Existing Line Station Design Reporting [ R ]. Beijng； Beijng Urban Engineering Design & Research Institute Co. Ltd,2006.
[8]北京城建勘测设计研究院有限责任公司，公主坟站第三 方监测总结报告[R].北京：北京城建勘测设计研究院 有限责任公司,2012.
Beijing Urban Construction Survey and Design Institute Co. Ltd. The Third - party Monitoring Summary Report of Gongzhufen Station [ R ].Beijing： Beijng Urban Construction Survey and Design Institute Co. Ltd, 2012.
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2013, Vol. 30 
