A novel dual stress/strain-controlled direct simple shear apparatus to study shear strength and shear creep of clay

被引：0
作者：
Chen, Ge [1 ]
Zhu, Jungao [1 ]
Wang, Tao [2 ]
Li, Jian [3 ]
Lou, Qixun [3 ]
Li, Tao [3 ]
机构：
[1] Hohai Univ, Key Lab Minist Educ Geomech & Embankment Engn, Nanjing 210098, Peoples R China
[2] Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China
[3] Chengdu Engn Corp Ltd, Chengdu 610072, Peoples R China
来源：
GEOMECHANICS AND ENGINEERING | 2024年 / 37卷 / 06期
关键词：
creep test; direct simple shear apparatus; shear strength test; steel laminations; stress/strain control; uniform shearing; SAND; BEHAVIOR; TESTS; LIQUEFACTION; PRESSURE; STRESS; SILT; SOIL;
D O I：
10.12989/gae.2024.37.6.615
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Direct simple shear test is an effective method to measure strength and deformation properties of soil. However, existing direct simple shear apparatus have some shortcomings. The paper has developed a novel dual stress/strain-controlled direct simple shear apparatus. The novel apparatus has the following advantages: A rectangular specimen is used that effectively avoid common issues associated with conventional cylindrical specimens, such as specimen tilting. The utilization of deformation control rods ensures a uniform shear deformation of the specimen. Vertically integrated force transmission structure is improved that avoids issues arising from changes in pivot points due to lever tilting. Incorporating this novel direct simple shear apparatus, shear strength and shear creep tests of clay were performed. Shear strength parameters and shear creep behaviors are analyzed. The results of these experiments show that the novel apparatus can measure accurately the shear rheological properties of soil. This study provides strong guidance for studying the mechanical properties of soil in engineering practice.
引用
收藏
页码：615 / 627
页数：13
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