ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2013, Vol. 33 ›› Issue (12): 1022-1028.DOI: 10.3973/j.issn.1672-741X.2013.12.008
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LI Li, YUAN Chuanghui, WU Jian
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In this paper, the application condition of cutandcover topdown construction method is presented, with the design of the outhung hall of China Art Gallery Station of Line 8 of Beijing Metro as an example. Comparison and contrast is made between cutandcover topdown construction method and cutandcover bottomup construction method and the former is adopted for the outhung hall structure. The design idea and key design points, structural calculation and waterproofing technology of the outhung hall structure are presented. The types of the foundations under the steel pipe columns and the modes of the connection between roof slabs and side pile top beams are discussed. In the end, longitudinal bottom beams constructed in mined pilot tunnel are adopted as the strip foundation under the steel pipe columns, and fixed connection is adopted between roof slabs and side pile top beams. In this way, the problem of limited space is solved and the safety of the surrounding buildings is guaranteed.
Key words: Beijing Metro, cutandcover, top down method, steel pipe column, integral structure, vertical bearing structure, connection between roof slab and top beam, waterproofing joint
LI Li, YUAN Chuanghui, WU Jian. Key Design Points of Outhung Hall Structure of China Art Gallery Station Constructed by Cutandcover Topdown Method[J]. Tunnel Construction, 2013, 33(12): 1022-1028.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.1672-741X.2013.12.008
http://www.suidaojs.com/EN/Y2013/V33/I12/1022