基于Goodman界面单元的加筋砂土变形破坏有限元数值分析

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Abstract The plane strain compression tests of dense sand reinforced with a smooth brass plate are simulated numerically with a finite element method(FEM). Considering the slippage at the interface between the sand and the reinforcement，Goodman joint elements are used as interface elements in the numerical simulation. In the finite element analysis，the effects of the following factors for sand are also taken into account：(1) correlation of confining pressure；(2) anisotropy of strength；(3) nonlinear characteristics of pre-peak strain-hardening and post-peak strain-softening；(4) dilatancy；and (5) strain localization and forming characteristics of shear zone. The results indicate that the strain-stress relationship obtained by the proposed finite element analysis is generally in good agreement with that of plane strain compression tests. It is found that the maximum stress ratio and pre-peak stiffness in the finite element analysis are quite close to the results of tests. In addition，the results also indicate that the progressive failure of reinforced sand with a development of shear zone can be reasonably examined by the proposed finite element analysis，and the interaction between sand reinforcement at the interface can be well understood.

Key words： soil mechanics reinforced sand plane strain compression finite element method(FEM) Goodman interface elements dynamic relaxation method progressive failure

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	Articles by authors
	PENG Fangle1
	2
	CAO Yanbo1
	2
	Nozomu KOTAKE3
	SIDDIQUEE M S A4

Cite this article:

PENG Fangle1,2,CAO Yanbo1, et al. NUMERICAL ANALYSIS OF DEFORMATION AND FAILURE OF REINFORCED SAND WITH GOODMAN INTERFACE ELEMENTS[J]. , 2010, 29(S2): 3893-3904.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3893

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