基于强度折减法的土工格室加筋路堤稳定性分析

doi:10.12066/j.issn.1007-2861.1801

Abstract

Abstract:

It is difficult to see the contribution of changes in reinforcement parameters to a project with existing methods that analyze reinforced composite embankment. This paper uses a finite element software combined in conjunction with the strength reduction method (SRM) in numerical calculation to understand the effect of reinforcement of geocell. Calculations of 3D structural models for different reinforced embankments are carried out based on SRM. The results conform to that obtained by using limit equilibrium, and indicate feasibility of the proposed method for analyzing embankments under complex working conditions of the reinforcement. Stability of embankments with geocells is analyzed using the method. Influences of welding distance, buried depth, height and number of layers are then investigated. The results show that the geocell can increase global stability of the embankment. Also, effect of reinforcement can be improved by decreasing welding space and increasing height of the geocell. A fracture surface with several separate arcs will appear in the reinforced embankment with multi-layer geocells.

Key words: geocell, reinforced embankment, stability analysis, strength reduction method (SRM), safety factor

CLC Number:

TU443

LIU Beibei, ZHANG Mengxi, WANG Dong. Stability analysis of geocell reinforced embankment with strength reduction method[J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(2): 287-295.

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Stability analysis of geocell reinforced embankment with strength reduction method

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