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在倾斜负载条件下,使用自适应有限元素极限分析在岩石斜坡上的嵌入式带底的最终承载能力
Gang Yang1, Dongjin Xu2, Xiaoming Liu3,4
1China Communications Road and Bridge Construction Co. Ltd., Beijing, 101107, China.
Scientific reports
|March 14, 2025
概括
本研究使用有限元素极限分析 (FELA) 调查岩石斜坡脚部的稳定性. 更深的基础和倾斜的负载增加承载能力和滑动体积,负载倾斜产生不对称的故障包裹.
科学领域:
- 地质技术工程 地质技术工程
- 岩石机械学 岩石机械学
- 斜坡稳定性分析
背景情况:
- 岩石斜坡支系统的稳定性对基础设施至关重要.
- 现有的研究往往忽视了基础嵌入深度和倾斜负载.
- 了解这些因素是防止斜坡故障的关键.
研究的目的:
- 分析在倾斜负载下岩石斜坡上的条形底座的最终承载能力.
- 研究基础嵌入深度对系统稳定性的影响.
- 在故障时使用图像识别量化滑动体积.
主要方法:
- 有限元极限分析 (FELA) 用于建模承载能力.
- 参数研究包括嵌入深度,负载倾斜率和霍克-布朗标准.
- 图像识别用于量化岩石质量的滑动体积.
主要成果:
- 最终承载能力和滑动体积随着基础嵌入深度的增加而增加.
- 倾斜的负载显著影响斜坡基础系统的稳定性.
- 倾斜负载的故障封面是不对称的,由于几何不对称.
结论:
- 基础嵌入深度是提高承载能力的关键参数.
- 倾斜的负载在岩石斜坡支系统中引入复杂的故障机制.
- 准确的稳定性评估需要考虑负载倾斜和嵌入效应.
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