Ground Surface Settlement Incurred by Excavation of Foundation Pit in Watery Filling Area
JIN Xiaoguang1, 2, HOU Xiaohe1, 2, SUN Zhigang1, 2, ZHANG Haoling1, 2
(1. School of Civil Engineering, Chongqing University, Chongqing 400030, P. R. China; 2. Key Laboratory of
New Technology for Construction of Cities in Mountain Area of the Ministry of Education, Chongqing 400030, P. R. China)
Abstract：The estimation methods of the ground surface settlement incurred by the foundation pit excavation of filling area influenced by underground water seepage were discussed. The computation formula of the ground surface settlement caused by the foundation pit excavation was also deduced. Combining with the excavation project case of deep foundation pit at rail transit interval in watery backfilling area, both theoretical analysis and simulation study of the ground surface settlement around the foundation pit were carried out. The results show that underground water seepage is one of the important reasons for the ground surface settlement around the foundation pit. With good practicability and reliability, the proposed method is useful in estimating the ground surface settlement in similar geological environment.
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2017, Vol. 36 
