循环荷载下饱和黄土的剪切特性与破坏模式

doi:10.13278/j.cnki.jjuese.20230119

Journal of Jilin University(Earth Science Edition) ›› 2024, Vol. 54 ›› Issue (5): 1604-1614.doi: 10.13278/j.cnki.jjuese.20230119

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Investigation on Instability Mode and Shear Behaviour of Saturated Loess Under Cyclic Loading

Liu Xin1,2, Qin Zehua1, Wang Xiaojie1, Lan Hengxing1,2,3

1. School of Geological Engineering and Geomatics，Chang’an University，Xi’an 710054，China
2. Key Laboratory of Ecological Geology and Disaster Prevention，Ministry of Natural Resources, Xi’an 710054，China
3. State Key Laboratory of Resources and Environmental Information Systems （Institute of Geographic Sciences and Natural
Resources Research，Chinese Academy of Sciences），Beijing 100101，China

Online:2024-09-26 Published:2024-10-12
Supported by:
Supported by the National Natural Science Foundation of China (41927806，42041006)，the Natural Science Basic Research Program of Shaanxi Province (2022JQ-251) and the Fundamental Research Funds for the Central Universities Through Chang’an University (300102263101)

Abstract

Abstract:

The instability mode and shear behaviour of saturated loess are the basis for analyzing seismic deformation of loess foundation and their structures. To reveal the unique strength attenuation and deformation deterioration of saturated loess under cyclic loads, the dynamic soil strength, development of the pore pressure and instability modes of the saturated loess were investigated by the cyclic triaxial test, subjected to the initial shear stress (qs) and the cyclic shear stress (qc). The experimental results show that: When qs

Key words: failure mode, pore , pressure, initial shear stress, cyclic shear stress, cyclic stress ratio, pore pressure, saturated loess, reconstituted loess

Liu Xin, Qin Zehua, Wang Xiaojie, Lan Hengxing, . Investigation on Instability Mode and Shear Behaviour of Saturated Loess Under Cyclic Loading[J].Journal of Jilin University(Earth Science Edition), 2024, 54(5): 1604-1614.

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