›› 2013, Vol. 34 ›› Issue (8): 2231-2238.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of artificial structural loess under true triaxial tests

CHEN Chang-lu1, 2, SHAO Sheng-jun3, ZHANG Zhe3   

  1. 1. Key Laboratory of Highway Construction and Maintenance Technology in Loess Region, Ministry of Transport, Shanxi Provincial Research Institute of Communication, Taiyuan 030003, China, 2. Architecture and Civil Engineering, Bijie University, Bijie, Guizhou 551700, China; 3. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048, China
  • Received:2012-05-29 Online:2013-08-12 Published:2013-08-13

PDF (Chinese)

1336

Abstract: Structural characteristic is an important basic property of natural loess. The authors have developed an artificial preparation of structural loess, improved the deficiencies of the original true triaxial apparatus and carried out the true triaxial tests of artificial structural loess. The results show that the method of artificial structural loess is reasonably reliable. At the same time, the variation of failure strength and residual strength of structural loess under complex stress conditions is analyzed. When the confining pressure is less than the structural strength of the structural loess soil, the stress-strain curves is softening, and on the contrary hardening. Mohr-Coulomb strength criterion is better to describe the residual strength variation of structural loess and significantly worse to describe the peak breaking strength variation of structural loess.

Key words: structural loess, artificial preparation, true triaxial test, strength variation

CLC Number: 

  • TU 443
[1] GONG Feng-qiang, WU Wu-xing, LI Tian-bin, SI Xue-feng, . Simulation experimental study of spalling failure of surrounding rock of rectangular tunnel of deep hard rock [J]. Rock and Soil Mechanics, 2019, 40(6): 2085-2098.
[2] ZHENG Qing-song, LIU En-long, LIU Ming-xing, . Influence of dip angle of structural planes on mechanical properties of artificial rock samples under triaxial test conditions [J]. Rock and Soil Mechanics, 2019, 40(5): 1854-1861.
[3] LUO Dan-ni, SU Guo-shao, HE Bao-yu, . True triaxial test on rockburst of granites with different water saturations [J]. Rock and Soil Mechanics, 2019, 40(4): 1331-1340.
[4] CHU Feng, ZHANG Hong-gang, SHAO Sheng-jun, . Experimental study of constitutive model of Longdong Q3 structural loess with compressive and shearing damage [J]. Rock and Soil Mechanics, 2019, 40(10): 3855-3870.
[5] ZHANG Kun-yong, LI Wei, Charkley Nai Frederick, CHEN Shu,. True triaxial test on clay mixed with gravel with stress increment loading from minor principal stress direction [J]. , 2018, 39(9): 3270-3276.
[6] JIANG Jing-shan, CHENG Zhan-lin, ZUO Yong-zhen, DING Hong-shun,. Experimental investigation on strength characteristic of coarse-grained materials in three-dimensional stress state [J]. , 2018, 39(10): 3581-3588.
[7] JIANG Ting-ting， ZHANG Jian-hua, HUANG Gang, . Experimental study of fracture geometry during hydraulic fracturing in coal [J]. , 2018, 39(10): 3677-3684.
[8] FANG Jin-jin, SHAO Sheng-jun, FENG Yi-xin,. Suction changes of intact Q3 loess based on true triaxial tests [J]. , 2017, 38(4): 934-942.
[9] ZHANG Duo , LIU Yang , WU Shun-chuan , . Simulation of strength characteristics of granular materials in true triaxial test for different stress paths and its mesoscopic mechanism analysis [J]. , 2016, 37(S1): 509-520.
[10] SONG Xin-jiang , XU Hai-bo, ZHOU Wen-yuan, WANG Wei,. True triaxial test on stress-strain characteristics of cement-soil [J]. , 2016, 37(9): 2489-2495.
[11] DAI Jin-qiu, SU Zhong-jie, ZHAO Ming-chao, XIANG Yu-hang，. True triaxial tests and strength characteristics of silty clay [J]. , 2016, 37(9): 2534-2540.
[12] ZHOU Yong-qiang , SHENG Qian , LIU Fang-xin , FU Xiao-dong , ZHU Ze-qi，. A study of modified Drucker-Prager yield criterion [J]. , 2016, 37(6): 1657-1664.
[13] HE Jie , JIANG Ming-jing , . Macro-micro mechanical property of pore-filling type methane hydrate-bearing sediment in true triaxial tests based on distinct element analysis [J]. , 2016, 37(10): 3026-3034.
[14] SHAO Sheng-jun , CHEN Fei , DAI Ya-Feng , LU Yuan , . Shear band mechanism and strength characteristics of structural loess tested by true triaxial apparatus [J]. , 2015, 36(S1): 66-70.
[15] SONG Yan-xun , LI Rong-jian , LIU Jun-ding , GAO Hu-yan，. A hyperbola strength formula of structural loess and its modifying algorithm under failure stress state [J]. , 2014, 35(6): 1534-1540.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LIU Xiao，TANG Hui-ming，LIU Yu. A new model for landslide displacement prediction based on set pair analysis and fuzzy-Markov chain[J]. , 2009, 30(11): 3399 -3405 .
[2] MAO Chang-xi, DUAN Xiang-bao, WU Liang-ji. Study of critical gradient of piping for various grain sizes in sandy gravels[J]. , 2009, 30(12): 3705 -3709 .
[3] HU Da-wei, ZHOU Hui, XIE Shou-yi, ZHANG Kai, SHAO Jian-fu, FENG. Study of Biot’s coefficients of marble during plastic deformation phase[J]. , 2009, 30(12): 3727 -3732 .
[4] ZHANG Fu-hai，WANG Bao-tian，LIU Han-long. Research on deformation disciplines of compacted expansive soils[J]. , 2010, 31(1): 206 -210 .
[5] ZHANG Chun-hui, YU Yong-jiang, ZHAO Quan-sheng. Seepage-stress elastoplastic coupling model of heterogeneous coal and numerical simulation[J]. , 2009, 30(9): 2837 -2842 .
[6] WU Zhen-zhi, YANG Guo-xiang, YANG Lin-de, LIN Jia-xiang, WANG Ji-yun. Prediction and control of ground movement of Shanghai Yangtze River tunneling across building areas[J]. , 2010, 31(2): 582 -587 .
[7] WANG Yu-lin, XIE Kang-he, LU Meng-meng, WANG Kun. A method for determining critical thickness of base soil of foundation pit subjected to confined water[J]. , 2010, 31(5): 1539 -1544 .
[8] WANG Zhi-jie，LUO Ya-sheng，YANG Yong-jun. Study of dynamic structural characteristics of unsaturated loesses in different regions[J]. , 2010, 31(8): 2459 -2464 .
[9] ZHOU Ai-qi, GONG Xiao-nan, LIU Heng-xin, ZHANG Hong-jian. Research on optimum design of retaining piles structure with interior bracing[J]. , 2010, 31(S1): 245 -254 .
[10] HAN Ai-min，LI Jian-guo，XIAO Jun-hua，XU Hong-zhong. Mechanical behaviors of frame beam supporting structure with prestressed anchors[J]. , 2010, 31(9): 2894 -2900 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd