Mechanical Behaviour of Artificially Frozen Ground: Experimental Observations and Modelling

人工冻土的力学行为：实验观测和建模

• 批准号: 2886419
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2886419
• 关键词: Mechanical; Behaviour; Artificially; Frozen; Ground

The applications of artificial ground freezing in construction cover the formation of frozen earth walls to support deepexcavations, structural underpinning for foundation improvement, and temporary control of ground water. The growingawareness of the merits of artificial ground freezing as a temporary ground improvement system with minimalenvironmental impact is directly related to progress in the understanding of the mechanical behaviour of frozen soils.However, a solid framework has yet to be established for the fully coupled thermo-hydromechanical behaviour offrozen/unfrozen soil and there is need for fundamental research to be carried out on experimental characterisation andconstitutive modelling. The proposed project will develop, set-up and use innovative laboratory equipment to investigateexperimentally the behaviour of soil on freezing and thawing. The project will provide valuable insight into the mechanicalbehaviour of frozen soils, drawing upon multi-disciplinary knowledge at the interface between soil mechanics,thermodynamics, soil physics, material science, and industry. The results will then be carried forward to calibrateconstitutive models and validate existing hypothesis on artificially frozen ground behaviour.

人造地面冻结在施工中的应用涵盖了冻结的土壁的形成，以支持深层浪费，结构性的基础，以改善基础，并临时控制地下水。人造地面冻结作为具有最小环境影响的临时地面改进系统的优点的生长性与对冷冻土壤的机械行为的理解的进步直接相关。建模。拟议的项目将开发，设置和使用创新的实验室设备来调查土壤对冰冻和融化的行为。该项目将在土壤，热力学，土壤物理学，材料科学和工业之间的界面上借鉴多学科知识，对冰冻土壤的机械实现提供宝贵的见解。然后，结果将被带到校准模型模型上，并验证有关人为冷冻地面行为的现有假设。