Purpose

This paper aims to analyze the influence of rotated anisotropy on the stability of slope, the random finite element method is used in this study.

Design/methodology/approach

The random field is generated by the discrete cosine transform (DCT) method, which can generate random field with different rotated angles conveniently.

Findings

Two idealized slopes are analyzed; it is observed that the rotated angle significantly affects the slope failure risk. The two examples support the conclusion that when the orientation of the layers is nearly perpendicular to the slip surface, the slope is in a relative stable condition. The results of heterogeneous slope with two clay layers demonstrate that the rotated angle of lower layer mainly controls the failure mechanism of the slope, and the rotated angle of upper layer exhibits a significant influence on the probability of slope failure.

Originality/value

The method for rotated anisotropy random field generation based on the DCT has a simple expression with few parameters and is convenient for implementation and practical application. The proposed method and the results obtained are useful for analyzing the stability of the heterogeneous slopes in engineering projects.

中文翻译：

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考虑土壤性质旋转各向异性的边坡稳定性分析

目的

本文旨在分析旋转各向异性对边坡稳定性的影响，采用随机有限元方法进行研究。

设计/方法/方法

随机场采用离散余弦变换（DCT）方法生成，可以方便地生成不同旋转角度的随机场。

发现

分析了两个理想化的斜率；观察到旋转角度显着影响边坡破坏风险。这两个例子支持了当层的方向几乎垂直于滑动面时，坡度处于相对稳定状态的结论。两层黏土非均质边坡结果表明，下层旋转角度主要控制边坡破坏机制，上层旋转角度对边坡破坏概率有显着影响。

原创性/价值

基于DCT的旋转各向异性随机场生成方法表达式简单，参数少，便于实现和实际应用。所提出的方法和获得的结果对于分析工程项目中异质边坡的稳定性是有用的。