Evolutionary impact of weak structural planes on overloaded anchored slope stability.

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-06-03 DOI:10.1038/s41598-025-04019-y

Chenxi Miao, Wei Zhang, Mengliang Gao, Anqi Liu, Dongdong Pang

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Abstract

This paper conducts a numerical study exploring the impact of the evolution of a weak structural plane on the overload stability and failure performance of anchored slopes. Both the macroscopic deformation failure characteristics and the internal stress-strain response of an overloaded anchored slope, following the evolution of a weak structural plane, are thoroughly presented and analyzed. As the structural plane evolves under overload conditions, it is demonstrated that the deformation mode of the slope initially evolves from a "circular damage" pattern, progressing to a combination of "circular damage and wedge damage", ultimately resulting in "wedge damage". Furthermore, there is a gradual shift of the stress peak and cable axial force from the top to the bottom of the slope. The formation of a stress concentration area in the anchoring zone is observed once the structural plane reaches full-length, leading to subsequent cable debonding. Moreover, it is apparent that the weak structural plane shows distinct stress differentiation, effectively isolating stress and deformation.

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弱结构面对超载锚固边坡稳定性的演化影响。

本文通过数值研究，探讨了弱结构面演化对锚固边坡超载稳定性和破坏性能的影响。对锚固超载边坡在弱结构面演化过程中的宏观变形破坏特征和内部应力-应变响应进行了全面的阐述和分析。随着结构面在过载条件下的演变，表明边坡的变形模式最初由“圆形损伤”模式演变为“圆形损伤+楔形损伤”的组合，最终形成“楔形损伤”。应力峰值和索轴力由坡顶向坡底逐渐移动。当结构面达到全长时，锚固区会形成应力集中区，导致后续锚索脱粘。弱结构面表现出明显的应力分异，有效地隔离了应力和变形。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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