scholarly journals Structural Analysis of Backfill Highway Subgrade on the Lower Bearing Capacity Foundation Using the Finite Element Method

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Wenjuan Xu ◽  
Xin Huang ◽  
Jiandong Huang ◽  
Zhengjun Yang
Keyword(s):  
Finite Element ◽  
Slope Stability ◽  
Bearing Capacity ◽  
Reduction Method ◽  
Strength Reduction ◽  
Fe Model ◽  
Strength Reduction Method ◽  
Analysis Model ◽  
Reduction Coefficient ◽  
The Stability

The present study is to investigate the stability of the backfill subgrade on the lower bearing capacity foundation. A finite element (FE) model was constructed to simulate the high-filled road subjected to the actual self-weight load. The strength reduction method was adopted to establish an analysis model of slope stability. At the same time, the sensitivity analysis of the factors affecting the slope stability was carried out through parametric studies, including the elastic modulus, cohesion, internal friction angle, and slope rate. The results showed that the slope stability analysis model established by the strength reduction method can characterize the stability of the slope by calculating the slope safety coefficient. The mutation point of the relationship curve between the displacement generated in the slope and the reduction coefficient can be used as the criterion. Under the condition of a given strength reduction coefficient, the calculated results obtained through FE modeling can show the development of the equivalent plastic zone in the form of cloud diagrams.

The Influence of Cross Section Geometric Shape on the Slope Stability

2014 ◽  
Vol 1065-1069 ◽  
pp. 232-235
Author(s):  
Bao Long Zhang ◽  
Wen Fan
Keyword(s):  
Finite Element ◽  
Slope Stability ◽  
Cross Section ◽  
Reduction Method ◽  
Calculation Model ◽  
Strength Reduction ◽  
Geometric Shape ◽  
Strength Reduction Method ◽  
The Stability

The stability of the soil slop is influenced by many factors. In this paper, the influence of cross section geometric shape on the slope stability is analyzed by establishing a reasonable calculation model and using finite element strength reduction method. Results indicate that the slope stability of stepped excavation surface is higher than that of linear excavation surface, and the stability is better with larger and more platforms, the designers should make a choice in design by comparing cost and ease of construction. Slope table form also has affections, the stability of concave linear and convex slope type decreases in turn.

Basic Analysis of Homogenous Slope Stability by Finite Element Method Based on Plaxis

2012 ◽  
Vol 446-449 ◽  
pp. 1838-1841
Author(s):  
Jia Yu Tong Li ◽  
Ke Bin Shi ◽  
Xin Jun Yan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Slope Stability ◽  
Dynamic Simulation ◽  
Reduction Method ◽  
Reduction Factor ◽  
Strength Reduction ◽  
Strength Reduction Method ◽  
Sliding Surface ◽  
The Moment

This article analyze the slope stability by strength reduction method named Phi-c which supplied by FE software PLAXIS. The reduction factor is suggest to be the safety factor of the slope at the moment when the slope reaches instability, the numerical non-convergence occurs simultaneously. The position of sliding surface and dynamic simulation of instability can be obtain as well. This article has compared the results calculated by other methods Bishop and ABAQUS with difference between 2%-3% which attest to its accuracy and practicability in engineering.

An Analysis of Slope Stability of Sand Embankment with Shear Strength Reduction (SSR) Method

2010 ◽  
Vol 152-153 ◽  
pp. 1017-1023 ◽  
Author(s):  
Shu Tang Liu ◽  
Wei Dong Cao ◽  
Ying Yong Li ◽  
Yong Shun Yang
Keyword(s):  
Slope Stability ◽  
Safety Factor ◽  
Reduction Method ◽  
Strength Reduction ◽  
Land Resource ◽  
Strength Reduction Method ◽  
Side Slope ◽  
Content Ratio ◽  
The Stability ◽  
Shear Strength Reduction

Comparing with conventional expressway embankment filled with clay only, the sand embankment tipped by intensely-weathered rock (IWR) can effectively reduce the consumption of cultivated land resource caused by the construction of expressway engineering. So it is significant to research the constructions of sand embankment tipped by IWR if local sand resources are enough. Combined with the construction of Qing-Lin freeway, in China, the slope stability of the embankment filled with sand and tipped by IWR outside was analyzed in the paper, and the analysis was conducted by the strength reduction method. The effects of the changes of compaction, water content, ratio of slope, height of the embankment and different IWR-width on the safety factor of the slope stability were investigated. The results indicate that, when the height of embankment is constant, the ratio of slope is the most important factor which influences the stability of side slope, and the IWR-width does not have a decisive effect on the safety factor on subsoil condition and it can be determined according to the convenience of site construction.

Research on the Law of the Infuence on Multilayer Slope Load to the the Different Gradient High Slope Stability

2012 ◽  
Vol 178-181 ◽  
pp. 1667-1671
Author(s):  
Jin Liang Wu ◽  
Yong Xing Zhang
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Reduction Method ◽  
Strength Reduction ◽  
Strength Reduction Method ◽  
Analysis Software ◽  
Element Analysis ◽  
The Law ◽  
The Stability ◽  
Embankment Stability

In recent years, domestic superelevation embankment common occurance, This paper uses the finite element strength reduction method, analyzing the stability about high embankment and high embankment multilayer under multilayer load with large-scale finite element analysis software named ANSYS, it is researched on the law of the infuence on multilayer slope load to the the different gradient high embankment stability.

Based on the Strength Reduction Slope Stability Finite Element Analysis of Engineering Examples

2012 ◽  
Vol 170-173 ◽  
pp. 885-888
Author(s):  
Peng Fei Li ◽  
Hong Bo Liu ◽  
Yu Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Slope Stability ◽  
Reduction Method ◽  
Limit Equilibrium ◽  
Strength Reduction ◽  
Strength Reduction Method ◽  
Element Analysis ◽  
Finite Element Program ◽  
Element Program

The strength reduction method is applied in the analysis of slope stability, strength reduction, into the finite element program for calculating, until computations convergence. Combined with the engineering example, comparison of slope stability finite element method and the traditional limit equilibrium method the results show that, based on the strength reduction finite element analysis of slope stability is feasible.

scholarly journals Stability Analysis of Jointed Rock Slope by Strength Reduction Technique considering Ubiquitous Joint Model

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Ruili Lu ◽  
Wei Wei ◽  
Kaiwei Shang ◽  
Xiangyang Jing
Keyword(s):  
Rock Slope ◽  
Reduction Method ◽  
Domain Size ◽  
Jointed Rock ◽  
Strength Reduction ◽  
Hydropower Station ◽  
Strength Reduction Method ◽  
Vertical Side ◽  
The Stability ◽  
Jointed Rock Slope

In order to study the failure mechanism and assess the stability of the inlet slope of the outlet structure of Lianghekou Hydropower station, the strength reduction method considering the ubiquitous joint model is proposed. Firstly, two-dimension numerical models are built to investigate the influence of the dilation angle of ubiquitous joints, mesh discretization, and solution domain size on the slope stability. It is found that the factor of safety is insensitive to the dilation angle of ubiquitous joints and the solution domain size but sensitive to the mesh discretization when the number of elements less than a certain threshold. Then, a complex three-dimension numerical model is built to assess the stability of the inlet slope of the outlet structure of Lianghekou Hydropower station. During the strength reduction procedure, the progressive failure process and the final failure surface of the slope are obtained. Furthermore, the comparison of factors of safety obtained from strength reduction method and analytical solutions indicates that the effect of vertical side boundaries plays an important role in the stability of jointed rock slope, and the cohesive force is the main contribution to the resistant force of vertical side boundaries.

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