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Laboratory investigation on the mechanical behavior of ice-saturated frozen loess

ISSN号：1674-3822
期刊名称：寒旱区科学(英文版)
时间：2014.8.15
页码：314-321
分类：TU411.3[建筑科学—岩土工程;建筑科学—土工工程] TU831.6[建筑科学—供热、供燃气、通风及空调工程]
作者机构：[1]Institute of Transportation, Inner Mongolia University, Hohhot, Inner Mongolia 010070, China, [2]State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
相关基金：This research was supported by the National Natural Science Foundation of China （41301072, 41230630, 41101068）, National Key Basic Research Program of China （973 Program No. 2012CB026102）, Natural Science Foundation of Inner Mongolia （2013MS0702）, the Program of Higher-level talents of Inner Mongolia University （30105-125146）, and the Open Project Program of the State Key Laboratory of Frozen Soil Engineering （SKLFSE201208）.
相关项目：中国科学院寒区旱区环境与工程研究所冰川冻土特殊学科点人才培养项目

作者： XiangTian Xu|YuanMing Lai|JinYi Chai|CaiXia Fan|

关键词：冻结黄土, 含冰量, 饱和, 行为研究, 实验室, 三轴压缩试验, 力学, 三轴试验, strength, elastic modulus, ice-saturated frozen loess, confining pressure, damage

中文摘要：

To investigate the mechanical properties of ice-saturated frozen soil, a series of triaxial tests under various confining pressures(0.5 to 9.0 MPa) on ice-saturated frozen loess with ice content of 23.7% were carried out at a temperature-6 °C, and at 1.25 mm/min of loading rate. The triaxial tests include two loading modes, one with monotonic loading(i.e., triaxial compression), and another with static cycle loading. The test results under triaxial compression show that the strength and deformation behaviors of ice-saturated frozen loess are affected by confining pressure. According to the test results of triaxial loading-unloading cycle test, the elastic modulus evolution with the number of cycles under different confining pressures are analyzed.

英文摘要：

To investigate the mechanical properties of ice-saturated frozen soil, a series of triaxial tests under various confining pressures（0.5 to 9.0 MPa） on ice-saturated frozen loess with ice content of 23.7% were carried out at a temperature-6 °C, and at 1.25 mm/min of loading rate. The triaxial tests include two loading modes, one with monotonic loading（i.e., triaxial compression）, and another with static cycle loading. The test results under triaxial compression show that the strength and deformation behaviors of ice-saturated frozen loess are affected by confining pressure. According to the test results of triaxial loading-unloading cycle test, the elastic modulus evolution with the number of cycles under different confining pressures are analyzed.

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