180同心圆双环形内支撑在复杂环境下大型深基坑支护中的应用研究

180同心圆双环形内支撑在复杂环境下大型深基坑支护中的应用研究 English Version

详细信息

Wuhan Design and Research Institute of Sinocoal International Engineering Group, Wuhan 430064, China

摘要: 以侵入武汉长江隧道安全保护控制线的某大型深基坑支护工程为例,开展单圆环形支撑与同心圆环形内支撑结构的内力、位移等技术指标对比分析,结果表明,同心圆环形内支撑结构能有效共同承担支撑轴力,具有结构受力合理、整体稳定性高、支撑刚度大,桩顶位移小等优点,有效地控制基坑开挖对武汉长江隧道及周边建（构）筑物的影响,取得了很大经济效益和社会效益。
- 大型深基坑 /
- 同心圆环形支撑 /
- 武汉长江隧道
Abstract: A foundation pit located within the safety protection control line of Wuhan Yangtze River tunnel is taken as an example. The internal forces, displacements and other technical indices of single circular strut and concentric circular strut are comparatively analyzed. The calculated results show that the concentric circular strut can effectively share the axial forces. It has more reasonable structural stress, higher overall stability and supporting stiffness. It can effectively control the adverse influences of Wuhan Yangtze River tunnel and the surrounding building during the excavation of the foundation pit. Great economic and social benefits are achieved.
- large deep excavation /
- concentric circular strut /
- Wuhan Yangtze River tunnel

[1]	刘国彬, 王卫东. 基坑工程手册[M]. 北京: 中国建筑工业出版社, 2009. (LIU Guo-bin, WANG Wei-dong. Excavation engineering handbook[M]. Beijing: China Architecture and Building Press, 2009. (in Chinese))
[2]	刘益平. 大直径双环梁基坑支护体系设计与优化[J]. 岩土工程学报, 2010, 32(增刊1): 219-222. (LIU Yi-ping. Design and optimization of double large-diameter arched beam support system in foundation pit[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S1): 219-222. (in Chinese))
[3]	尹骥, 管飞, 李象范. 直径210 m超大圆环支撑基坑设计分析[J]. 岩土工程学报, 2006, 28(增刊): 1596-1599. (YIN Ji, GUAN Fei, LI Xiang-fan. Design and analysis of a 210 m-diameter circular strutted foundation pit[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(S0): 1596-1599. (in Chinese))