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关于在支墙后面不和土壤的非极限被动土压计算的研究
Yaxin Zhang1, Wenchao Gu2, Qiliang Xu2
1National Field Observation and Research Station of Landslides in Three Gorges Reservoir Area of Yangtze River, China Three Gorges University, Yichang, 443002, Hubei, China.
Scientific reports
|May 20, 2025
概括
这项研究开发了一种新的模型,用于计算不和土壤中支墙背后的土壤压力. 结合中间主应力可以提高设计稳定的地质技术结构的准确性.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 土木工程 土木工程是指土木工程.
背景情况:
- 准确计算支墙后面的土壤压力对于设计和施工至关重要.
- 在不和土壤中对非极限土壤压力的研究是有限的.
- 现有的模型往往不能充分考虑影响不和土壤行为的因素.
研究的目的:
- 在不和土壤中开发非极限被动土压的计算模型.
- 将中间主应力,土壤形和内部水平剪切应力纳入模型.
- 为在不和条件下改善支墙设计提供理论基础.
主要方法:
- 开发了一个基于双剪的统一强度理论的计算模型.
- 为无极限的被动地压获得了分析解决方案.
- 通过将计算结果与实验数据进行比较来验证模型.
主要成果:
- 该模型,考虑到中间主应力,显示更接近与实验发现的非极限被动土压在不和土壤更接近一致.
- 动员有效的内部摩擦角随着中间主应力系数 (b) 和位移比 (η) 的增加而增加.
- 矩阵吸收的内部摩擦角随着矩阵吸收的减少而增加.
- 随着中间主应力系数 (b) 的增加,被动土压力会下降.
- 支墙上的水平地面压力随着矩阵吸收的增加而增加.
结论:
- 开发的模型提供了一个更准确的方法来计算不限度的被动土压在不和土壤.
- 介质主应力显著影响地面压力计算的准确性.
- 矩阵吸收和中间主应力是影响支墙后面土壤压力的关键因素,需要将它们纳入设计考虑.
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