Soil parameter determination for deep excavation analysis by optimization
作者:
Chang‐Yu Ou,
Yu‐Geng Tang,
期刊:
Journal of the Chinese Institute of Engineers
(Taylor Available online 1994)
卷期:
Volume 17,
issue 5
页码: 671-688
ISSN:0253-3839
年代: 1994
DOI:10.1080/02533839.1994.9677634
出版商: Taylor & Francis Group
关键词: soil parameter;deep excavation analysis;finite element method;optimization
数据来源: Taylor
摘要:
This paper presents an efficient method of determining soil parameters for finite element analysis of deep excavation. Due to the limitation of soil tests, field measurements are often used to calibrate in‐situ soil properties. This process is time consuming and computationally cumbersome. In this paper, nonlinear optimization techniques are applied to determine the unknown parameters of an objective function, which is defined as the sum of the square of differences between observed and predicted values. The convergence and stability of the optimization algorithm are confirmed by three well‐known mathematical functions and a hypothetical excavation case under varied ground conditions. Finally, a case study is presented to show the reliability of the proposed soil parameter determination procedure.
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