Stability charts for uniform slopes in soils with nonlinear failure envelopes
Stability charts for uniform slopes in soils with nonlinear failure envelopes
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DOI：
10.1016/j.enggeo.2013.10.021
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发表时间：
2014-01-16
影响因子：
7.4
通讯作者：
Eid, Hisham T.
中科院分区：
文献类型：
--
作者：
Eid, Hisham T.
基于广泛的参数研究结果，建立了具有非线性抗剪强度破坏包络的土体中均匀边坡的稳定性评估图表。这项研究是使用形成的信封来表示土壤非线性排水强度信封的真实形状以及与之相关的不同程度的非线性。引入了一种简单的方法来描述非线性包络和稳定性参数，其值取决于这种非线性的程度，这使得制作这样的图表成为可能。所给出的图表使用方便，在确定安全系数时不需要迭代过程。它们可以用来分析干燥的斜坡，承受由测压表面或孔隙水压力比表示的孔压的斜坡，以及暴露在地震力下的斜坡。给出了算例，说明了这些图表的不同应用，以及在均质边坡分析中考虑土体强度包络非线性的重要性。(C)2013爱思唯尔B.V.保留所有权利。
Based on the results of an extensive parametric study, charts were developed for assessment of the stability of uniform slopes in soils with nonlinear shear strength failure envelopes. The study was conducted using envelopes formed to represent the realistic shapes of soil nonlinear drained strength envelopes and the associated different degrees of nonlinearity. The introduction of a simple methodology to describe the nonlinear envelopes and a stability parameter, the value of which depends on the degree of this nonlinearity has made it possible to produce such charts. The presented charts are easy to use and do not require an iterative procedure when determining the safety factors. They can be used for the analysis of dry slopes, slopes subjected to pore-water pressures represented by piezometric surfaces or pore-water pressure ratios, and slopes exposed to seismic forces. Numerical examples are given to illustrate the different applications of the presented charts, as well as the importance of considering nonlinearity of the soil strength envelope in the analysis of uniform slopes. (C) 2013 Elsevier B.V. All rights reserved.