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Numerical Analysis of the Stability of embankment slope Reinforced with Piles

Transactions of Tianjin University 2007年第2期13卷 126-130页

作者：崔溦张志耕闫澍旺 School of Civil Engineering Tianjin University

The effects of stabilizing piles on the stability of an embankment slope are analyzed by numerical simulation. The shear strength reduction method is used for the analysis, and the soil - pile interaction is simulated with zero-thickness elasto-plastic interface elements. Effects of pile spacing and pile position on the safety factor of slope and the behavior of piles under these conditions are given. The numerical analysis indicates that the positions of the pile have significant influence on the stability of the slope, and the pile needs to be installed in the middle of the slope for maximum safety factors. In the end, the soil arching effect closely associated with the space between stabilizing piles is analyzed. The results are helpful for design and construction of stabilizing piles.

关键词： stabilizing piles embankment slope shear strength reduction method interface element numerical simulation

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Stability analysis of cohesive soil embankment slope based on discrete element method

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Journal of Central South University 2020年第7期27卷 1981-1991页

作者： XU Guang-ji ZHONG Kun-zhi FAN Jian-wei ZHU Ya-jing ZHANG Yu-qing School of Transportation Southeast UniversityNanjing 211189China Aston Institute of Materials Research Engineering Systems&Management GroupAston UniversityBirmingham B47ETUK

In order to study the safety factor and instability process of cohesive soil slope, the discrete element method(DEM) was applied. DEM software PFC2 D was used to simulate the triaxial test to study the influence of the particle micro parameters on the macroscopic characteristics of cohesive soil and calibrate the micro parameters of DEM model on this basis. embankment slope stability analysis was carried out by strength reduction and gravity increase method, it is shown that the safety factor obtained by strength reduction method is more conservative, and the arc-shaped feature of the sliding surface under the gravity increase method is more obvious. Throughout the progressive failure process, the failure trends, maximum displacements, and velocity changes obtained by the two methods were consistent. When slope was destroyed, the upper part was cracked, the middle part was sheared, and the lower part was destroyed by extrusion. The conclusions of this paper can be applied to the safety factor calculation of cohesive soil slopes and the analysis of the instability process.

关键词： embankment slope cohesive soil stability analysis numerical simulation PFC2D software safety factor

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Analysis of Highway Subgrade slope Protection and Support Technologies

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Journal of World Architecture 2023年第6期7卷 1-5页

作者： Zhipan Yang Haonan Ding Shuai Li China Merchants Chongqing Communications Technology Research&Design Institute Co. LTD.Chongqing 400067China

As an important transportation hub in China,the traffic volume and driving speed are important aspects of ***,the protection requirements for roadbed side slopes are higher,and it is necessary to resist rainwater erosion and other damages by protecting the side ***,it is necessary to adopt effective technical means of subgrade protection and *** paper mainly summarizes the characteristics of highway subgrade slope protection construction and slope protection and support technologies.

关键词： Expressway embankment slope Protection Support technology

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