Experimental study on the adfreezing strength of the interface between silt and concrete

被引：0
作者：
Sun T. [1 ,2 ]
Gao X. [1 ,2 ]
Yue Z. [1 ,3 ]
Li X. [1 ,2 ]
Sun X. [1 ,2 ]
机构：
[1] State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structure, Shijiazhuang Tiedao University, Shijiazhuang, 050043, Hebei
[2] School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, Hebei
[3] School of Graduate, Shijiazhuang Tiedao University, Shijiazhuang, 050043, Hebei
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2020年 / 39卷 / 05期
关键词：
Adfreezing strength; Interface; Low temperature direct shear test; Orthogonal test; Soil mechanics;
D O I：
10.13722/j.cnki.jrme.2019.0842
中图分类号：
学科分类号：
摘要：
The adfreezing strength of the interface between soil and structure is an important parameter for the calculation of the tangential frost-heave forces and the establishment of the anti-freeze model in cold regions. In order to explain the formation mechanism of the adfreezing strength of soil-structure interfaces and to explore its influencing factors and changing rules, orthogonal direct shear tests were carried out under various conditions of moisture content, temperature and dry density. The test results show that the order of the influencing factors on the shear strength is moisture content, temperature and dry density and that the interface shear strength test is the best under the condition of low temperature, high water content and low dry density. The moisture content and temperature have significant interactive influence on the interface shear strength. The interface shear strength increases with rising the moisture content and the absolute value of the temperature. With increasing the normal pressure, the effect of the moisture content on the interface shear strength decreases gradually, while the effect of the temperature can still be promoted. Based on the experimental results, an explanation is given for the adfreezing strength formation and failure mechanisms of the interface between soil and structure. The research results can provide reference for the calculation of tangential frost-heave forces and the establishment of anti-freeze model. © 2020, Science Press. All right reserved.
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页码：1032 / 1039
页数：7
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