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| Determination of Soil Parameters for Numerical Simulation of an Excavation
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| ZHAO Xiangshan,CHEN Jinjian,HUANG Zhonghui,WANG Jianhua |
| （Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China） |
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Abstract Abstract： It is relatively difficlut to determine the parameters adopted in numerical simulation of excavation due to the nonuniformity and uncertainties of soil. In this paper, an inverse analysis method for deep excavation based on the Pareto multiobjective optimization was proposed. The excavation process was first simulated in ABAQUS. A multialgorithm genetically adaptive multiobjective method (AMALGAM) was then invoked by Matlab to identify the soil parameters in excavation with multiple types of field observations. The proposed method was applied to the analysis of a wellinstrumented deep well to predict the wall deflection, as well as the ground surface settlement in following excavation with acceptable accuracy. In addition, the nine soil parameters obtained from the inverse analysis on Changshou Road Station excavation were presented, which probably could be uesd as reference for other excavations.
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Received: 07 December 2014
Published: 29 January 2016
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