一些地质材料的排水三轴压缩的扩张器故障状态
Zenon Szypcio1, Katarzyna Dołżyk-Szypcio1, Katarzyna Gabryś2
1Department of Geotechnics, Roads and Geodesy, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 45A Wiejska Street, 15-351 Bialystok, Poland.
Materials (Basel, Switzerland)
|November 27, 2025
概括
本研究介绍了一种方法,使用排水三轴试验在地质材料中找到扩展剂失效状态. 这种状态对于摩擦状态概念至关重要,有助于比临界状态更准确地预测材料的行为.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 连续力学 连续力学
背景情况:
- 膨胀失效状态是理解地质材料中的摩擦状态概念的关键.
- 现有的模型往往将扩展性失效与最终失效状态等同,这可能是不准确的.
研究的目的:
- 介绍一种方法,通过排水的三轴压缩试验来识别扩张剂失效状态.
- 为了区分扩展器故障状态与地质材料的一般故障状态.
主要方法:
- 从排水的三轴压缩试验中分析应力比-塑料膨胀关系.
- 开发一种计算程序,以确定扩展性和收缩性地质材料的扩展性故障状态.
主要成果:
- 扩展剂失效状态与扩展性地质材料中的最小塑料扩展率相对应.
- 扩张器失效状态在应力比率-塑料扩张平面中形成线性关系,受谷物粉碎的影响.
- 这种方法可以在不达到临界摩擦状态的情况下确定临界状态角度空隙比.
结论:
- 扩展性故障状态之前的最终故障状态,使得更准确的应力和应变的确定.
- 摩擦状态概念,从关键状态概念扩展,提供了更细致的理解地质材料的行为.
- 拟议的方法提高了在剪切负荷下地质材料反应的预测.
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