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Volume 36 Issue zk1
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XU Kai-jun, MAO Yun, XIE Zhao-yu. Application of reinforced concrete circular bracing system in deep foundation pits[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk1): 77-80. DOI: 10.11779/CJGE2014S1013
Citation: XU Kai-jun, MAO Yun, XIE Zhao-yu. Application of reinforced concrete circular bracing system in deep foundation pits[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk1): 77-80. DOI: 10.11779/CJGE2014S1013
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Application of reinforced concrete circular bracing system in deep foundation pits

  • 1. Central-South Architectural Design Institute Co., Ltd., Wuhan 430071, China;
    2. School of Civil Engineering, Hubei Industrial University, Wuhan 430068, China

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  • Received Date: July 27, 2014
  • Published Date: July 27, 2014
    Graphical Abstract
    • Abstract
  • As urban development extends to underground space gradually, more and more deep foundation pits with complex surroundings, more nearby buildings and deep excavation occur. The reinforced concrete circular bracing system has the advantages of reasonable load transfer, small deformation and convenient earth excavation, and it is widely used in urban deep foundation pits. Based on the experience of design and construction of foundation pits, some important problems needed to be considered during design and construction of foundation pits are analyzed, such as bracing stiffness, layout of corner bracing, calculation of bracing columns, crack control and static detonation of bracing system. The reasons of the difference of deformation between design and monitoring values are discussed. The results have direct reference value for the design and construction of reinforced concrete circular bracing system in urban deep foundation pits.
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    • References (4)
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    李象范. 超大深基坑钢筋混凝土圆环行架内支撑设计[J]. 施工技术, 2006(6): 69-72. (LI Xiang-fan. Design of internal support of reinforcement loop truss in super-large deep foundation pit[J]. Construction Technology, 2006(6): 69-72. (in Chinese))
    [2]
    姚燕明, 周顺华, 孙 巍. 基坑刚度及预加轴力对基坑变形和内力的影响[J]. 地下空间, 2003, 23(4): 401-404. (YAO Yin-ming, ZHOU Shun-hua, SUN Wei. Influence of brace stiffness and pre-axial force on the deformation and internal of foundation pit[J]. Underground Space, 2003, 23(4): 401-404. (in Chinese))
    [3]
    龚晓南. 深基坑工程设计手册[M]. 北京: 中国建筑工业出版社, 1998. (GONG Xiao-nan. Design and construction manual of deep foundation pit[M]. Beijing: China Architecture & Building Press, 1998. (in Chinese))
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    饶运东, 许开军. 圆拱支护结构在深基坑支护中的应用[J],土工基础, 2009(4): 4-7. (RAO Yun-dong, XU Kai-jun. Application of circular arch supporting structure on deep foundation pit support[J]. Soil Engineering and Foundation, 2009(4): 4-7. (in Chinese))
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