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Strain-dependent slope stability
Acta Geotechnica ( IF 5.7 ) Pub Date : 2020-05-09 , DOI: 10.1007/s11440-020-00971-3
Kornelia Nitzsche , Ivo Herle

The state of equilibrium of a slope is usually interpreted and expressed by safety factors based on calculations with limit equilibrium methods. Different stress states, failure modes and hydraulic conditions in sections along a slip surface affect the development of shear stresses during slope movement. Moreover, a post-peak softening of the shear strength can have a pronounced impact. As a consequence of the latter effect, the mobilization of the shear resistance along the slip surface is non-uniform and the safety of the slope can be overestimated or underestimated. In the presented paper, an algorithm is proposed to capture the strain-dependent slope stability. The approach is illustrated by means of a calculation example for a slope with a planar slip surface where a block sliding is assumed.



中文翻译:

应变相关的边坡稳定性

边坡的平衡状态通常由安全系数根据极限平衡法的计算来解释和表示。沿滑移面的截面中不同的应力状态,破坏模式和水力条件会影响边坡运动过程中切应力的产生。此外,剪切强度的峰值后软化可以具有显着的影响。由于后一种效应,沿滑动表面的抗剪运动性是不均匀的,并且斜坡的安全性可能被高估或低估了。在本文中,提出了一种捕获与应变有关的边坡稳定性的算法。借助具有平面滑动面的边坡的计算示例来说明该方法,其中假定发生块状滑动。

更新日期:2020-05-09
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