ISSN 2096-4498 CN 44-1745/U
隧道建设(中英文) ›› 2019, Vol. 39 ›› Issue (S2): 318-325.DOI: 10.3973/j.issn.2096-4498.2019.S2.040
• 施工技术 • 上一篇 下一篇
张会荣, 谢乔木
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作者简介:
ZHANG Huirong, XIE Qiaomu
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摘要:
针对南渡江水文、潮汐、地质等工程特点以及文明东越江隧道项目特点,对围堰分段、分期、高程设计、隧道埋深方案设计的关键技术进行分析,并结合防洪评价、工期、造价等因素对围堰设计、基坑设计等方案进行比选。研究结果表明: 1)合理确定围堰平面布置方案和施工工期是该方案成败的关键; 2)采用两边放坡的大开挖方案,结构内力、变形、沉降较双排桩显著降低,围堰结构更加安全,并能大幅缩短工期、节约工程造价。
关键词: 越江隧道, 截流, 围堰明挖法, 基坑支护
Abstract:
Based on the hydrological, tidal, and geological characteristics of the Nandu River and the characteristics of the Wenming East Road Tunnel project, the key design technologies of section, stage and elevation of cofferdam and depth of tunnel are analyzed. The design schemes of cofferdam and foundation pit are compared in terms of flood control evaluation, construction period and cost. The study shows that: (1) The rational determination of cofferdam layout scheme and construction period is the key to the success of the project. (2) Compared to double-row pile, the structural internal force, deformation and settlement by adopting the large excavation scheme with both sides of the slope are much smaller, and the cofferdam structure is safer, which can greatly shorten the construction period and save the project cost.
Key words: river-crossing tunnel, interception, cut and cover cofferdam, foundation pit support
中图分类号:
U 45
张会荣, 谢乔木. 海口文明东越江隧道围堰明挖法设计关键技术研究[J]. 隧道建设, 2019, 39(S2): 318-325.
ZHANG Huirong, XIE Qiaomu. Key Design Technologies for Cut and Cover Cofferdam of Wenming East Road Tunnel in Haikou[J]. Tunnel Construction, 2019, 39(S2): 318-325.
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