S.-S. Wen’s scientific contributions

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Publications (1)


The expanded le morgenstern-price method for slope stability analysis based on a force-displacement coupled mode
  • Article

January 2020

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22 Reads

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1 Citation

Geomechanics and Engineering

D.-P. Deng

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K. Lu

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S.-S. Wen

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L. Li

Slope displacement and factor of safety (FOS) of a slope are two aspects that reflect the stability of a slope. However, the traditional limit equilibrium (LE) methods only give the result of the slope FOS and cannot be used to solve for the slope displacement. Therefore, developing a LE method to obtain the results of the slope FOS and slope displacement has significance for engineering applications. Based on a force-displacement coupled mode, this work expands the LE MorgensternPrice (M-P) method. Except for the mechanical equilibrium conditions of a sliding body adopted in the traditional M-P method, the present method introduces a nonlinear model of the shear stress and shear displacement. Moreover, the energy equation satisfied by a sliding body under a small slope displacement is also applied. Therefore, the double solutions of the slope FOS and horizontal slope displacement are established. Furthermore, the flow chart for the expanded LE M-P method is given. By comparisons and analyses of slope examples, the present method has close results with previous research and numerical simulation methods, thus verifying the feasibility of the present method. Thereafter, from the parametric analysis, the following conclusions are obtained: (1) the shear displacement parameters of the soil affect the horizontal slope displacement but have little effect on the slope FOS; and (2) the curves of the horizontal slope displacement vs. the minimum slope FOS could be fitted by a hyperbolic model, which would be beneficial to obtain the horizontal slope displacement for the slope in the critical state.

Citations (1)


... Sun et al.(2016b) combined with the numerical stability of global analysis and the flexibility of MPM, developed a general program for slope stability analysis and applied it to the study on stability evolution law of large-scale landslides. Deng et al. (2020) introduced the nonlinear model of shear stress and shear displacement, obtained double solutions of slope stress and displacement based on the extended MPM coupling force and displacement. In addition, MPM is also extended from 2D to 3D slope stability analysis (Sun et al.,2016a;Zheng, 2012;Cheng and Yip, 2007). ...

Reference:

Research on Reservoir Landslide Thrust Based on Improved Morgenstern-Price Method
The expanded le morgenstern-price method for slope stability analysis based on a force-displacement coupled mode
  • Citing Article
  • January 2020

Geomechanics and Engineering