Shear behaviors of geogrid reinforced saline soil under vertical cyclic loading

被引：0
|
作者：
Hou, Juan [1 ,2 ,3 ]
Chu, Chenxi [1 ]
Sun, Yinyu [1 ]
Weng, Ping [4 ]
Ma, Yanxia [3 ]
Zhang, Wuyu [3 ]
机构：
[1] School of Mechanics and Engineering Science, Shanghai University, Shanghai,200444, China
[2] School of Engineering, University of Virginia, Charlottesville,VA,22904, United States
[3] School of Civil Engineering, Qinghai University, Qinghai, Xining,810016, China
[4] China Railway, No. 5 Engineering Group, Sichuan, Chengdu,610000, China
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2023年 / 42卷
基金：
中国国家自然科学基金;
关键词：
Chlorine - Chlorine compounds - Cyclic loads - Elasticity - Geosynthetic materials - Reinforcement - Shear flow - Soil mechanics - Soils - Stress analysis - Sulfur compounds;
D O I：
10.13722/j.cnki.jrme.2022.0674
中图分类号：
学科分类号：
摘要：
Large-scale direct shear tests were conducted to investigate the shear behavior of geogrid reinforced coarse grained saline soils under normal cyclic loading. The effects of static loading,the initial stress, cyclic amplitude,and cyclic frequency of normal cyclic loading on the shear behavior of two geogrid reinforced coarse-grained saline soils were studied. The results showed that the shear strength of the coarse grained saline soils could be improved by geogrid. The shear strength of geogrid reinforced coarse-grained sulfate saline soils was generally higher than that of geogrid-reinforced coarse-grained chloride saline soils. The shear strength of the geogrid reinforced coarse-grained chloride saline soils decreased with increase of frequency. However,there is no obvious correlation between the shear behavior and amplitude. The lower initial normal stress reduced the shear strength of geogrid reinforced coarse-grained sulfate saline soil. The smaller the frequency, the lower the shear strength of the geogrid reinforced coarse-grained sulfate saline soils,and the smaller the shear displacement of the peak strength. © 2023 Academia Sinica. All rights reserved.
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页码：3832 / 3841
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