平面应变下原状黄土的剪切带研究

doi:10.16285/j.rsm.2022.0447

Rock and Soil Mechanics ›› 2023, Vol. 44 ›› Issue (2): 433-441.doi: 10.16285/j.rsm.2022.0447

• Fundamental Theroy and Experimental Research • Previous Articles Next Articles

Study on shear bands of undisturbed loess under plane strain

ZHAO Kai¹, SHAO Shuai^{1, 2}, SHAO Sheng-jun^{1, 2}, WEI Jun-zheng³, ZHANG Shao-ying¹, ZHANG Yu⁴

1. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China; 2. Shaanxi Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China; 3. China Railway First Survey and Design Institute Group Co., Ltd., Xi’an, Shaanxi 710043, China; 4. Civil and Architecture Engineering, Xi’an Technological University, Xi’an, Shaanxi 710021, China

Received:2022-04-06 Accepted:2022-05-13 Online:2023-02-10 Published:2023-02-17
Supported by:
This work was supported by the National Natural Science Foundation of China (52108342), the Basic Rearch Program of Natural Science in Shaanxi Province-Han-Wei Joint Found Project (2019JLP-21, 2019JLZ-13), the Doctoral Initial Funding of Xi’an University of Technology (107-451122001) and the Shaanxi Water Science and Technology Program Project (432021019).

Abstract

Abstract:

For the plane strain problem of engineering construction in loess area, the plane strain shear tests on intact loess under different lateral consolidation pressures and moisture contents were carried out by using the transformational true triaxial apparatus of Xi’an University of Technology. The experimental measurements of angle of inclination for shear band at shear failure were obtained. The Mohr-Coulomb and Roscoe solutions to angle of inclination for shear band of were derived from the stress-strain curve. The changes of intact loess strength, failure mode and angle of inclination for shear band were analyzed. The study results show that the stress-strain curve vary from primary softening type to secondary hardening type wih the development of new structure when the water content and lateral consolidation pressure increase. The failure modes of shear band present single line-shaped, cone-shaped and X-shaped as the increase of lateral consolidation pressure. Along wih the increase of moisture content, decrease in the cohesion, internal friction angle leads to reduce the angle of inclination for shear band of Mohr-coulomb solution, while the enhanced dilatancy rising the Roscoe solution. With the increase of lateral consolidation pressure, both the dynamic internal friction angle and the dilatancy are increase, resulting in shear band inclination angles of Mohr-Coulomb and Roscoe solution increase.

Key words: plane strain test, loess, stress-strain relationship, Mohr-Coulomb shear band, Roscoe shear band

CLC Number:

TU 444

ZHAO Kai, SHAO Shuai, SHAO Sheng-jun, WEI Jun-zheng, ZHANG Shao-ying, ZHANG Yu, . Study on shear bands of undisturbed loess under plane strain[J].Rock and Soil Mechanics, 2023, 44(2): 433-441.

References

Related Articles 15

[1]	WANG Ze-chi, SHAO Shuai, WEI Jun-zheng, SHAO Sheng-jun, SHEN Xiao-jun, WU Hao, . Deformation characteristics of undisturbed loess considering the change of intermediate principal stress [J]. Rock and Soil Mechanics, 2023, 44(3): 854-860.
[2]	XU Jian, ZHOU Li-yang, HU Ke, LI Yan-feng, WU Zhi-peng, . Uniaxial compression behavior of fissured loess disturbed by vibration load [J]. Rock and Soil Mechanics, 2023, 44(1): 171-182.
[3]	HAN Jia-ming, DONG Zhao, SU San-qing, MA Xin, LI Guan-bing, . Analytical solution of rainfall infiltration in homogeneous unsaturated slope and its application in loess slope [J]. Rock and Soil Mechanics, 2023, 44(1): 241-250.
[4]	LIU De-ren, AN Zheng-shan, XU Shuo-chang, WANG Xu, ZHANG Zhuan-jun, JIN Xin, ZHANG Yan, . Experimental study on immersion collapsibility process and vertical stress characteristics of large thickness loess foundation in Jingyuan area [J]. Rock and Soil Mechanics, 2023, 44(1): 268-278.
[5]	LIU Kuan, YE Wan-jun, GAO Hai-jun, DONG Qi, . Evolution law and microscopic mechanism of shear strength of acid- or alkali-contaminated loess [J]. Rock and Soil Mechanics, 2022, 43(S1): 1-12.
[6]	PAN Zhen-hui, XIAO Tao, LI Ping, . Influences of compaction degree and molding water content on microstructure and hydraulic characteristics of compacted loess [J]. Rock and Soil Mechanics, 2022, 43(S1): 357-366.
[7]	JIN Xin, WANG Tie-hang, HAO Yan-zhou, ZHAO Zai-kun, ZHANG Liang, ZHANG Meng, . Preliminary study of unloading calculation method in the unloading collapse process of loess between piles [J]. Rock and Soil Mechanics, 2022, 43(9): 2399-2409.
[8]	SADEGHI Hamed, KOLAHDOOZ Ali, AHMADI Mohammad-Mehdi. Slope stability of an unsaturated embankment with and without natural pore water salinity subjected to rainfall infiltration [J]. Rock and Soil Mechanics, 2022, 43(8): 2136-2148.
[9]	WANG Hai-man, NI Wan-kui, LIU Kui, . Rapid prediction method of soil-water characteristic curve of Yan’an compacted loess [J]. Rock and Soil Mechanics, 2022, 43(7): 1845-1853.
[10]	ZHANG Shu-ming, JIANG Guan-lu, YE Xiong-wei, CAI Jun-feng, YUAN Sheng-yang, LUO Bin, . A constitutive model for frozen silty sand based on binary medium model simplified by breakage parameter [J]. Rock and Soil Mechanics, 2022, 43(7): 1854-1864.
[11]	KANG Xiao-sen, LIAO Hong-jian, HUANG Qiang-bing, HUO Bing-yao, . Spacing ratio of structural loess and its prediction using bounding surface plasticity model [J]. Rock and Soil Mechanics, 2022, 43(6): 1469-1480.
[12]	CHEN Rui, ZHANG Xing, HAO Ruo-yu, BAO Wei-xing. Shear strength deterioration of geopolymer stabilized loess under wet-dry cycles: mechanisms and prediction model [J]. Rock and Soil Mechanics, 2022, 43(5): 1164-1174.
[13]	WANG Hai-man, NI Wan-kui. Prediction model of saturated/unsaturated permeability coefficient of compacted loess with different dry densities [J]. Rock and Soil Mechanics, 2022, 43(3): 729-736.
[14]	HOU Le-le, WENG Xiao-lin, LI Lin, ZHOU Rong-ming, . A critical state model for structural loess considering water content [J]. Rock and Soil Mechanics, 2022, 43(3): 737-748.
[15]	GAO Chang-hui, DU Guang-yin, LIU Song-yu, ZHUANG Zhong-xun, YANG Yong, HE Huan, . Influence of deep vibratory compaction on the horizontal stress change of collapsible loess [J]. Rock and Soil Mechanics, 2022, 43(2): 519-527.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 10

[1]	YAO Yang-ping, HOU Wei. Basic mechanical behavior of soils and their elastoplastic modeling[J]. , 2009, 30(10): 2881 -2902 .
[2]	XU Jin-ming, QIANG Pei, ZHANG Peng-fei. Texture analysis of photographs of silty clay[J]. , 2009, 30(10): 2903 -2907 .
[3]	XIANG Tian-bing, FENG Xia-ting, CHEN Bing-rui, JIANG Quan, ZHANG Chuan-qing. Rock failure mechanism and true triaxial experimental study of specimens with single structural plane under three-dimensional stress[J]. , 2009, 30(10): 2908 -2916 .
[4]	SHI Yu-ling, MEN Yu-ming, PENG Jian-bing, HUANG Qiang-bing, LIU Hong-jia. Damage test study of different types structures of bridge decks by ground-fissure[J]. , 2009, 30(10): 2917 -2922 .
[5]	XIA Dong-zhou, HE Yi-bin, LIU Jian-hua. Study of damping property and seismic action effect for soil-structure dynamic interaction system[J]. , 2009, 30(10): 2923 -2928 .
[6]	XU Su-chao, FENG Xia-ting, CHEN Bing-rui. Experimental study of skarn under uniaxial cyclic loading and unloading test and acoustic emission characteristics[J]. , 2009, 30(10): 2929 -2934 .
[7]	ZHANG Li-ting, QI Qing-lan, WEI Jing HUO Qian, ZHOU Guo-bin. Variation of void ratio in course of consolidation of warping clay[J]. , 2009, 30(10): 2935 -2939 .
[8]	ZHANG Qi-yi. Study of failure patterns of foundation under combined loading[J]. , 2009, 30(10): 2940 -2944 .
[9]	YI Jun, JIANG Yong-dong, XUAN Xue-fu, LUO Yun, ZHANG Yu. A liquid-solid dynamic coupling modelof ultrasound enhanced coalbed gas desorption and flow[J]. , 2009, 30(10): 2945 -2949 .
[10]	TAO Gan-qiang, YANG Shi-jiao, REN Feng-yu. Experimental research on granular flow characters of caved ore and rock[J]. , 2009, 30(10): 2950 -2954 .