| Application of FEM Analysis to Braced Excavation |
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| 作者姓名： | 李明飞 Atsushi Nakamura 蔡飞 Keizo Ugai |
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| 作者单位： | FORUM8 Co.，Ltd.，Department of Civil and Environmental Engineering，Gunma University |
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| 摘 要： | It is becoming possible to do detailed numerical analyses for the various mechanical behavior of braced excavation by researching and developing the numerical analysis technique such as the finite element method (FEM). However, the mechanical behavior of braced excavation has not been clarified fully both in theory and in experience. Therefore, improving the prediction accuracy during the prior design is very important for making the observational method of braced excavation more effective. In this paper, FEM analyses were performed for a model of braced excavation by using Geotechnical Finite Element Elasto-plastic Analysis Software, GeoFEAS (2D). As the constitutive law of ground, MC-DP model, and Duncan-Chang model were applied. The results were compared and discussed with that of a site measurement, and the effects of the constitutive law of ground on the analyzed result were verified. For the difference between the results, the reason was investigated by the analyses adjusting the elastic modulus of ground, and the appropriate application of the constitutive law was researched.
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| 关 键 词： | numerical analysis retaining wall finite element method (FEM) constitutive law |
Application of FEM Analysis to Braced Excavation |
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| LI Mingfei,Atsushi Nakamura,CAI Fei,Keizo Ugai.Application of FEM Analysis to Braced Excavation[J].Tsinghua Science and Technology,2008,13(Z1):40-45. |
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| Authors: | LI Mingfei Atsushi Nakamura CAI Fei Keizo Ugai |
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| Institution: | FORUM8 Co., Ltd.;Department of Civil and Environmental Engineering, Gunma University |
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| Abstract: | It is becoming possible to do detailed numerical analyses for the various mechanical behavior of braced excavation by researching and developing the numerical analysis technique such as the finite element method (FEM). However, the mechanical behavior of braced excavation has not been clarified fully both in theory and in experience. Therefore, improving the prediction accuracy during the prior design is very important for making the observational method of braced excavation more effective. In this paper, FEM analyses were performed for a model of braced excavation by using Geotechnical Finite Element Elasto-plastic Analysis Software, GeoFEAS (2D). As the constitutive law of ground, MC-DP model, and Duncan-Chang model were applied. The results were compared and discussed with that of a site measurement, and the effects of the constitutive law of ground on the analyzed result were verified. For the difference between the results, the reason was investigated by the analyses adjusting the elastic modulus of ground, and the appropriate application of the constitutive law was researched. |
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| Keywords: | numerical analysis retaining wall finite element method (FEM) constitutive law |
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