Three-dimensional numerical analysis on excavation and support of deep pit near the subway tunnel by computer simulation technique. | [Journal of Theoretical and Applied Information Technology • 2012]

Author(s):

1. Dapeng Zhu: School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, Sichuan, China; 2Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China

2. Yundian Lin: School of Civil Engineering and Architecture, Southwest Petroleum University, Chengdu 610500, Sichuan, China; Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China

3. Echuan Yan: Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, Hubei, China

Abstract:

Computer simulation technique was an effective method to analyze the influence of pit excavation on the stress-strain of soil around pit. Based on ANSYS and FLAC simulation software, in order to ensure the safety of building and subway tunnel nearby the pit excavation, the processes of excavation and support of deep foundation pit were simulated by the finite difference method, this paper obtained stress and deformation characteristics of the soil around pit and underground structures such as subway tunnel. The results showed that the method reflected interaction effects of retaining structure and soil in excavation process, and it could predict stress-strain and stability accurately when the pit was excavated to the designed depth. The study provided a scientific basis for pit design and safety assessment of pit excavation near the subway tunnel.

Page(s): 621-626

DOI: DOI not available

Published: Journal: Journal of Theoretical and Applied Information Technology, Volume: 45, Issue: 2, Year: 2012

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