Advances in Earth Science ›› 2015, Vol. 30 ›› Issue (3): 297-309. doi: 10.11867/j.issn.1001-8166.2015.03.0297

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Advances in Research on the Mechanical Behavior of the Tensile Strength of Soils

Liansheng Tang 1( ), Haitao Sang 2, 3, Zhengui Luo 1, Yinlei Sun 1   

  1. 1. School of Earth Sciences and Geological Engineering, Sun Yat-Sen University, Guangzhou 510275, China
    2. School of Engineering, Sun Yat-Sen University, Guangzhou 510275, China
    3. Guangdong Province Key Laboratory of Geological Processes and Mineral Resources, Guangzhou 510275, China
  • Online:2015-04-08 Published:2015-03-20

Liansheng Tang, Haitao Sang, Zhengui Luo, Yinlei Sun. Advances in Research on the Mechanical Behavior of the Tensile Strength of Soils[J]. Advances in Earth Science, 2015, 30(3): 297-309.

In conventional soil mechanics, soils usually do not act as tensile materials owing to their very small tensile strength, and therefore the tensile strength is always neglected. As a result, the soils’ tensile strength theory is far behind the shear strength theory. Actually, the tensile behavior of soils plays a very important role in the process of soils’ deformation and failure. In this paper, the development process and development characteristics of the soils’ mechanical behavior of tensile strength were summarized, and the new advances in the tests of tensile strength were introduced. Then, the latest development and research focus of the tensile strength for unsaturated soils were presented. Reasonable and unified acquaintance in suction of unsaturated soils was considered as the key to the tensile behavior of unsaturated soils. From the angle of failure mode of rock and soil, eight types of failure modes of rock and soil were summarized in the laws of tensile joint shear coupling failure, and the current research situation in this field was illustrated. At last, the problems existing in the research on the tensile behavior of soils, especially the unsaturated soils, were pointed out, and the directions of further research were given.

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