Abstract:The excavation of deep foundation pit adjacent to the existing metro station structure is a project with great source of risk. The existing structure will inevitably be influenced by the excavation. Based on one example of excavation work close to a metro station in Beijing, the influence of excavation on metro station is studied by FLAC3D stimulation. The method for simulating pile-anchor retaining and deformation joints is proposed, at the same time it is very useful to the numerical simulation of foundation pit. Finally, some deformation rules are concluded, and specific measures are put forward.
任伟明, 彭丽云, 刘军. 邻近地铁车站的基坑开挖基于FLAC3D数值模拟[J]. 岩土工程学报, 2013, 35(zk2): 276-280.
REN Wei-ming, PENG Li-yun, LIU Jun. Numerical simulation of excavation of deep foundation pit adjacent to metro station based on FLAC3D. Chinese J. Geot. Eng., 2013, 35(zk2): 276-280.
[1] CHART C W. Displacement of MRT Tunnels due to an Adjacent Excavation[D]. Singapore: Nanyang Techaological University, 1995. [2] 王卫东, 吴江斌, 翁其平. 基坑开挖卸载对地铁区间隧道影响的数值模拟黄庆华[J]. 岩土力学, 2005, 4(6): 54-57. (WANG Wei-dong, WU Jiang-bin, WU Qi-ping. Numerical modeling of affection of foundation pit excavation on metro tunnel) [J]. Journal of Soil Rock Mechanics, 2005, 4(6): 54-57. (in Chinese)) [3] 李 冰. 基坑开挖卸载对下卧地铁隧道影响的数值分析[J]. 岩土力学, 2013(5): 1459-1468. (LI Bin. Numerical analysis of influence of deep excavation on underlying metro tunnel[J]. Journal of Soil Rock Mechanics, 2013(5): 1459-1468. (in Chinese)) [4] 邹 彪. 城市新建隧道穿越既有地铁设施的关键控制技术研究[D]. 北京: 北京市政工程研究院, 2010. (ZHOU Biao. Research on controingl of existing subway facilities while new tunnel through[D]. Beijing: Beijing Municipal Research Institute 2010.) [5] 袁金荣, 赵福勇. 基坑变形预测的时间序列分析[J]. 土木工程学报, 2001, 34(6): 55-59. (YUAN Jin-rong, ZHAO Fu-yong. Predicting deformat ion of foundation pit using ANN[J]. China Civil Engineering Journal, 2001, 34(6): 55-59. ( in Chinese)) [6] 李凭雨, 陶连金, 孙 斌, 等. 基于FLAC3D 变形结果的某地铁车站主体结构的安全性评估[J]. 岩土工程界, 2007(7): 54-56. (LI Ping-yu, TAO Lian-jin, SUN Bin, et al. The security assessment of one metro statio n main structure based on the deformationresult from FLAC3D[J]. Geotechnical Engineering World, 2007(7): 54-56. (in Chinese))