INFLUENCE OF CONSTRUCTION OF SUPER-LARGE EXCAVATION WITH FRAME-TOP-DOWN METHOD ON ENVIRONMENTS
LI Jingpei1，2，BAI Ting1，2，YANG Jun1，2
(1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education，Tongji University，Shanghai 200092，China；2. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China)
Abstract：Combined with engineering case of a super-large deep excavation constructed by frame-top-down method，the deformation and effect on around environments are studied. According to analysis of the monitoring data，some conclusions are drawn as follows. (1) The deformation of retaining piles could be controlled well by use of frame-top-down method；and the deformation law is basically consistent with that by normal construction method. (2) The ground settlements are smaller，but the effect range is far excess of 4.5 times of excavation deep，which is different from the predicted results by former experience. Dewatering is the main reason of wide effect range. (3) The non-uniform settlements of the adjacent building and underground pipeline are small；and their settlements are controlled in allowable range. The results show that the deformation of excavation can be controlled and the around environment can be protected effectively by using this method.
李镜培1，2，柏 挺1，2，杨 军1，2. 框架逆作超大基坑施工对周边环境的影响[J]. 岩石力学与工程学报, 2012, 31(11): 2354-2362.
LI Jingpei1，2，BAI Ting1，2，YANG Jun1，2.
INFLUENCE OF CONSTRUCTION OF SUPER-LARGE EXCAVATION WITH FRAME-TOP-DOWN METHOD ON ENVIRONMENTS
. , 2012, 31(11): 2354-2362.
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2012, Vol. 31 
