不同的液压路径下不和完整的故障特性
Weiye Fu1, Shengjun Shao1, Aizhong Luo1,2
1School of Civil and Architectural Engineering, Xi'an University of Technology, Xi'an, Shaanxi, China.
PloS one
|October 31, 2025
概括
研究西安的液压路径揭示了对土壤强度和保留水的重大影响. 湿和装载的顺序极大地影响了质的特性,影响了工程应用.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 环境科学 环境科学
背景情况:
- 低质土壤对基础设施发展至关重要,特别是在西安等地区.
- 了解液压路径对状物行为的影响对于预测其在不同环境条件下的性能至关重要.
研究的目的:
- 系统地研究加湿 (W-L) 和加载 (L-W) 液压路径对水保持和强度的影响.
- 分析由于不同的液压路径而导致的的微观结构变化.
主要方法:
- 利用改进的不和三轴测试系统,在受控吸气,净限制压力和剪切应力下进行实验.
- 应用了Van Genuchten模型来描述保持水的行为.
- 雇佣扫描电子显微镜 (SEM) 和用于微观结构调查的定量孔分析.
主要成果:
- 范·格努特模型准确地描述了水的保留,并观察到和吸收比 (s/Sc) 的线性关系.
- 装载后湿 (L-W) 路径导致临界状态线 (CSL) 斜率较低,表明与湿后装载 (W-L) 路径相比,剪切强度降低.
- SEM分析显示,W-L导致孔隙扩张和水泥溶解,而L-W导致粒子紧缩和孔隙网络精炼.
结论:
- 液压路径显著影响吸入对强度的贡献,确定了一个关键值,超出这个值后,液压效应至关重要.
- 湿和加载的顺序改变了的微观结构,影响了其机械行为和保持水分的特性.
- 这些发现为设计和稳定性分析基于土的结构提供了关键的见解.
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