新的故障机制用于评估与斜坡相邻的最终倾斜负载
Hongwei Fang1, Ning Wang1, Yixiang Xu2
1School of Geomatics and Prospecting Engineering, Jilin Jianzhu University, Changchun, 130118, China.
PloS one
|July 27, 2023
概括
引入了一种新的故障机制,用于倾斜负载下的斜坡. 该方法准确计算最终负载,通过考虑不断变化的故障轮,克服了传统特性方法的局限性.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 斜坡稳定性分析
背景情况:
- 倾斜稳定性分析的传统方法通常依赖于假设的故障机制.
- 特性方法 (CMOC) 传统上假定有一个凸的临界滑动表面.
- 现有的模型可能会高估最终负载,特别是在特定的土壤条件下.
研究的目的:
- 提出一种新的故障机制,用于计算斜坡的最终倾斜负载.
- 解决传统特性方法 (CMOC) 的局限性.
- 调查倾斜负载对临界斜坡故障轮的影响.
主要方法:
- 基于关键斜率轮交叉点的新故障机制的开发.
- 使用有限元极限分析 (FELA) 进行验证.
- 参数分析以比较拟议的方法与CMOC.
主要成果:
- 临界斜率轮可以随着倾斜负载的增加而从凸变为凸凸.
- CMOC高估了最终倾斜负载,特别是在低强度比或高摩擦角度时.
- 拟议的方法准确地预测最终负载,而不需要假设故障模型.
结论:
- 拟议的故障机制可以更准确地评估倾斜负载下的斜坡稳定性.
- 该研究强调了CMOC在特定场景中的缺点.
- 这种新方法为地质工程师提供了更可靠的工具.
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