Buckling failure analysis and numerical manifold method simulation for Malvern Hills slope

WANG Qiu-sheng; ZHANG Rui-tao; ZHENG Hong

doi:10.16285/j.rsm.2021.1674

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Buckling failure analysis and numerical manifold method simulation for Malvern Hills slope

更新时间：2026-06-25

- Buckling failure analysis and numerical manifold method simulation for Malvern Hills slope
- Vol. 43, Issue 7, Pages: 1951-1960(2022)
- 作者机构：
  
  北京工业大学城市与工程安全减灾教育部重点实验室,北京,100124
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2021.1674
  CLC： TU457
- Online First：05 August 2022，
  
  Published：2022
- 稿件说明：
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WANG Qiu-sheng, ZHANG Rui-tao, ZHENG Hong. Buckling failure analysis and numerical manifold method simulation for Malvern Hills slope[J]. 2022, 43(7): 1951-1960.
DOI：

WANG Qiu-sheng, ZHANG Rui-tao, ZHENG Hong. Buckling failure analysis and numerical manifold method simulation for Malvern Hills slope[J]. 2022, 43(7): 1951-1960. DOI： 10.16285/j.rsm.2021.1674.

摘要

基于能量法推导了多层岩质边坡临界溃曲长度计算公式。考虑层间和交叉节理采用数值流形法对新西兰Malvern Hills边坡溃曲演变过程进行了模拟，并将理论计算、数值模拟结果与现场实测数据进行了对比。结果表明：通过预制层间和交叉节理，数值流形法可以准确模拟边坡溃曲破坏过程；边坡溃曲变形及失稳破坏过程依次为层间错动—轻微弯曲、坡脚牵引—剧烈隆起、加速滑移—形成滑坡；在自重长期作用下，边坡溃曲形成至破坏演化过程主要分为初始弯曲、急剧弯曲和滑坡形成3个阶段；为交叉节理与斜坡法向夹角，在0°、15°、30°、45°这4种交叉节理中，为45°时边坡最容易产生滑移弯曲变形，溃曲程度最大，并且经历滑移弯曲时步最少；为30°～45°时，数值模拟结果与实际较为吻合。

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