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Journal Article

Numerical Simulation of Reinforced Retaining Walls under Dynamic Loads

TL;DR: In this paper, a numerical simulation study of reinforced retaining wall by ANSYS was conducted to investigate the influence of frequency content and the peak amplitude of the seismic load to the behavior of these structures under seismic load conditions, and some qualitative conclusions about their dynamic behavior were gained.
Abstract: Through considering reinforcement-soil and faceplate-soil and faceplate-faceplate contact elements,the finite element model of reinforced retaining walls including soil elements,contact elements,faceplate elements and reinforcement elements was established.The numerical simulation study of reinforced retaining wall by ANSYS was conducted to investigate the influence of frequency content and the peak amplitude of the seismic load to the behavior of these structures under seismic load conditions,and some qualitative conclusions about their dynamic behavior were gained.
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Proceedings ArticleDOI
11 May 2010
TL;DR: In this article, a series of laboratory triaxial compression tests on red-sandstone reinforced with hexagonal wire mesh inclusions were carried out to study the mechanical properties of this composite reinforced soil.
Abstract: Red-sandstone reinforced with hexagonal wire mesh is a new concept of composite reinforced soil. In order to study the mechanical properties of this composite reinforced soil, a series of laboratory triaxial compression tests on specimens reinforced with hexagonal wire mesh were carried out. 3D finite element method was introduced to simulate the triaxial tests. The macro stress-strain relation of the red-sandstone specimens reinforced with hexagonal wire mesh inclusions was reproduced and verified by 3D finite element model. The results indicate: finite element method is a ideal technique to study the mechanical characteristics of composite reinforced materials. The peak strength of red-sandstone are increased by hexagonal wire mesh reinforcements, and the peak shear strength arrives at a larger shear displacement than the plain red-sandstone specimen.

3 citations


Cites background from "Numerical Simulation of Reinforced ..."

  • ...Jiang([14]) conducted a numerical simulation study of reinforced retaining wall by ANSYS to investigate the influence of seismic load to the behavior of these structures....

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Journal ArticleDOI
TL;DR: The results show that reinforced by geogrid the lateral displacement of the foundation can be controlled effectively with little effect on the vertical displacement, and with lateral displaced of slope side becoming smaller with increase of the reinforced modulus, the reinforcement effect can be improved.
Abstract: In order to appraise the effect on which geotechnical reinforce soft soil foundation, based on a finite element model of reinforced embankment on soft ground, the stability of soft foundation with step loading during the construction of subgrade was studied, and the influencing factors of reinforced effect were analyzed. The results show that reinforced by geogrid the lateral displacement of the foundation can be controlled effectively with little effect on the vertical displacement; with the increase of the embankment fill, the tension of geogrid is gradually increasing, and its peak is gradually moving to the middle line of subgrade; multi-layers geogrid is better, the effect of 2 layers geogrid is significantly better than 1 layer, the effect of 4 layers is not obvious compared with 2 layers; the closer the reinforcing position is to the ground, the better the effect; with lateral displacement of slope side becoming smaller with increase of the reinforced modulus, the reinforcement effect can be improved.

2 citations


Cites background from "Numerical Simulation of Reinforced ..."

  • ...There are three contact modes in ANSYS: point-point contact, point-surface contact, surface-surface contact, and the contact element used in each contact is applicable to the corresponding problem[10]....

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Proceedings ArticleDOI
10 Oct 2009
TL;DR: In this article, a new slice analysis methodology was developed to analyze the internal stability of a reinforced retaning wall under horizontal and vertical seismic loads, and the results showed that the simplifed critcal slip surface is more feasible and convenient for engineering application than the log-spiral failure surface.
Abstract: According to the retaining wall that reinforced by extensible reinforcements such as geogrids and geotextiles, a new slice analysis methodology was developed to analyze its internal stability under horizontal and vertical seismic loads. The slide failure wedge of the reinforced retaning wall was divided into a number of soil slices parrallel to the reinforcements. Based on the single line shape assumption for the critical slip surface of the wall, the equilibrium equations for horizontal forces, vertical forces and moments of each soil slice were established. And then, the recurrence formulas for horizontal and vertical inter-slice forces, reinforcement tensile forces were derived consequently, in which the relationship between the inter-slice forces and the safety factor FS of the wall was included. The safety factor FS and the vertical bearing capacity qmax at the wall top were obtained by solving those recurrence formulas. This proposed slice method was applied to analyze the seismic stability of two reinforced retaining walls whose height was 5m and 10m respectively, and the results were compared with those of some conventional approaches such as strength reduction method and FLAC3D. The results show that: this method is simple, practical and good precision in calculation, so it can be used in actual seismic stability design of reinforced walls; the simplifed critcal slip surface is more feasible and convenient for engineering application than the log-spiral failure surface.

1 citations


Cites background from "Numerical Simulation of Reinforced ..."

  • ...Applications of reinforced soil walls are mostly in non-earthquake regions at present (Jiang and Zou, 2006)....

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