Research on the Deformation Law of Supporting Structure for Deep Foundation Pit of Metro Station
REN Jian-xi1, FENG Xiao-guang1, LIU Hui1, QIN Xing-chun2
1. Xi’an University of Science & Technology, Xi'an, Shanxi 710054, China; 2. Northwest Research Institute of Engineering Investigation and Design, Xi'an, Shanxi 710003, China
Abstract：Research purposes：Taking deep excavation engineering in the north region of Forest Station on the Olympic branch line of Beijing Subway as an example, the deformation law of enclosure structure for deep foundation pit is studied by the in-site monitoring means for the purpose of providing the reference to optimizing the design and construction of similar engineering.
Research conclusions：The maximal horizontal displacement of retaining pile is closely related with excavation depth and time. The horizontal displacement of the pile tops is the biggest when the deep foundation pit is excavated to a certain depth and steel brace has not been erected. With excavation of foundation and erection of the steel brace, the location of the biggest horizontal displacement shifts down. With increase of steel brace, the steel axis force decrease, so steel brace can effectively control horizontal displacements of retaining pile and internal force of steel in the pile. In addition, temperature has a certain effect on the axis force of steel brace.
任建喜，冯晓光，刘 慧，秦杏春. 地铁车站深基坑围护结构变形规律监测研究[J]. 铁道工程学报, 2009, 26(3): 89-92.
REN Jian-xi, FENG Xiao-guang, LIU Hui, QIN Xing-chun. Research on the Deformation Law of Supporting Structure for Deep Foundation Pit of Metro Station. 铁道工程学报, 2009, 26(3): 89-92.
2009, Vol. 26 
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