Development and application of triaxial apparatus of frozen soil used in conjunction with medical CT

被引：0
|
作者：
Chen S.-J. [1 ,2 ]
Ma W. [1 ]
Li G.-Y. [1 ]
Liu E.-L. [1 ]
Zhang G. [1 ,2 ]
机构：
[1] State Key Laboratory of Frozen Soil Engineering, CAREERI, Chinese Academy of Sciences, Lanzhou, 730000, Gansu
[2] University of Chinese Academy of Sciences, Beijing
来源：
Yantu Lixue/Rock and Soil Mechanics | 2017年 / 38卷
基金：
中国国家自然科学基金;
关键词：
Apparatus; CT scanning; Frozen soil; Mesostructure change; Real-time loading;
D O I：
10.16285/j.rsm.2017.S2.049
中图分类号：
学科分类号：
摘要：
For solving the deficiency of triaxial apparatus of frozen soil in matching the real-time scanning of medical CT in the low temperature environment, a new triaxial apparatus of frozen soils is developed successfully. The configuration of the apparatus and the technical difficulties that need to be overcome in the development process are also introduced. The apparatus can be used to complete the triaxial loading and unloading test in the low temperature environment. Meanwhile, the medical CT matched with the newly developed apparatus can realize the real-time dynamic scanning in the whole mechanical process. On this basis, the real-time CT scanning test of frozen loess under triaxial loading is conducted. The test results show that the parameters of the newly developed apparatus can meet the real-time CT scanning conditions of the frozen soil samples under triaxial loading and unloading. In addition, the high quality mesoscopic CT images of different load conditions are obtained; and then the test results are also analyzed and discussed. The development of the apparatus has provided a new technical means for establishing the relationship between the mesostructure and the macroscopic mechanical properties. © 2017, Science Press. All right reserved.
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页码：359 / 367
页数：8
相关论文
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