›› 2011, Vol. 32 ›› Issue (S1): 360-0363.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of large scale direct shear test of phyllite residual soil

TAN Han-hua1, MENG Qing-shan2   

  1. 1.College of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2010-11-24 Online:2011-05-15 Published:2011-05-16

PDF (Chinese)

1759

Abstract: The shear strength of soil is an important mechanical parameter for slope stability analysis. The large scale direct shear test is an effective method to obtain the shear strength index of coarse grain soil; but it is difficult to excavate massive undisturbed soil. The undisturbed sample was excavated in-situ, the laboratory small scale direct shear tests were carried out on undisturbed sample and compacted sample for comparison. It is approved that the shear strength indices of undisturbed sample could be replaced by the test results of compacted sample when the density and water content of compacted soil could be controlled effectually. The results of small scale shear test of undisturbed soil and large scale shear test of compacted soil were comparatively analyzed. The shear strength of residual soil achieved from small scale direct shear test is more slightly high than that of test results from large scale direct shear test under the same pressure. The research results show that the shear strength indices of small scale direct shear test is slightly bigger than that of slope take place slide in-situ. It is suggested that the peak value strength and remaining strength achieved from large scale direct shear test should be selected for slope stability analysis when the density and water content of compacted soil could be controlled effectually; it is more reasonable to calculate slope stability by this method.

Key words: residual soil, shear characteristics, shear strength, undisturbed sample, compacted sample

CLC Number: 

  • TU 413
[1] FAN Ke-wei, LIU Si-hong, LIAO Jie, FANG Bin-xin, WANG Jian-lei, . Experimental study on shearing characteristics of pebbles-filled soilbags [J]. Rock and Soil Mechanics, 2020, 41(2): 477-484.
[2] TU Yuan, WANG Kui-hua, ZHOU Jian, HU An-feng, . Application of effective stress method and effective consolidation stress method for strength calculation in preloading ground [J]. Rock and Soil Mechanics, 2020, 41(2): 645-654.
[3] LI Xiao-gang, ZHU Chang-qi, CUI Xiang, ZHANG Po-yu, WANG Rui, . Experimental study of triaxial shear characteristics of carbonate mixed sand [J]. Rock and Soil Mechanics, 2020, 41(1): 123-131.
[4] ZHANG Chen-yang, CHEN Min, HU Ming-jian, WANG Xin-zhi, TANG Jian-jian, . Effect of fine particles content on shear strength of calcareous sand [J]. Rock and Soil Mechanics, 2019, 40(S1): 195-202.
[5] WANG Huan, CHEN Qun, WANG Hong-xin, ZHANG Wen-ju, . Triaxial tests on fly ash with different compaction and matric suction [J]. Rock and Soil Mechanics, 2019, 40(S1): 224-230.
[6] LI Xin-ming, KONG Ling-wei, GUO Ai-guo, . Experimental study of ageing effect on mechanical properties of Nanyang undisturbed expansive soil [J]. Rock and Soil Mechanics, 2019, 40(8): 2947-2955.
[7] CAI Yu, XU Lin-rong, ZHOU De-quan, DENG Chao, FENG Chen-xi, . Model test research on method of self-balance and traditional static load [J]. Rock and Soil Mechanics, 2019, 40(8): 3011-3018.
[8] LI Shu-zhao, WANG Zhong-chang, JIA Xu, HE Lin-lin, . Simplified calculation method for cyclic bearing capacity of suction anchors with taut mooring in soft clay [J]. Rock and Soil Mechanics, 2019, 40(5): 1704-1712.
[9] ZHOU Xiao-wen, CHENG Li, ZHOU Mi, WANG Qi, . Behavior of ball penetration in clay in centrifuge testing [J]. Rock and Soil Mechanics, 2019, 40(5): 1713-1720.
[10] ZHENG Guo-feng, GUO Xiao-xia, SHAO Long-tan, . Experimental verification of an unsaturated shear strength criterion based on the state surface expression [J]. Rock and Soil Mechanics, 2019, 40(4): 1441-1448.
[11] FU Hong-yuan, LIU Jie, ZENG Ling, BIAN Han-bing, SHI Zhen-ning, . Deformation and strength tests of pre-disintegrating carbonaceous mudstone under loading and soaking condition [J]. Rock and Soil Mechanics, 2019, 40(4): 1273-1280.
[12] ZHANG Jing-ke, SHAN Ting-ting, WANG Yu-chao, WANG Nan, FAN Meng, ZHAO Lin-yi, . Mechanical properties of soil-grout interface of anchor system in earthen sites [J]. Rock and Soil Mechanics, 2019, 40(3): 903-912.
[13] JIANG Qiang-qiang, LIU Lu-lu, JIAO Yu-yong, WANG Hao, . Strength properties and microstructure characteristics of slip zone soil subjected to wetting-drying cycles [J]. Rock and Soil Mechanics, 2019, 40(3): 1005-1012.
[14] QIU Min, YUAN Qing, LI Chang-jun, XIAO Chao-chao, . Comparative study of calculation methods for undrained shear strength of clay based on cavity expansion theory [J]. Rock and Soil Mechanics, 2019, 40(3): 1059-1066.
[15] ZHOU Jian, CAI Lu, LUO Ling-hui, YING Hong-wei, . Limit equilibrium analysis of anisotropic soft clay stability against excavation basal heave [J]. Rock and Soil Mechanics, 2019, 40(12): 4848-4856.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] MA Qing，ZHAO Jun-hai，WEI Xue-ying. Investigation of rock resistant coefficient in rocks around tunnel based on unified strength theory[J]. , 2009, 30(11): 3393 -3398 .
[2] LI Jia-gui, CHEN Zheng-han, HUANG Xue-feng, LI Jia. In-site test on earth pressure and saturating collapse test for unsaturated loess Q3 on high slope[J]. , 2010, 31(2): 433 -440 .
[3] TAN Yun-zhi，KONG Ling-wei，GUO Ai-guo，FENG Xin1，WAN Zhi. Discussion on the compaction degree index of subgrade filled with laterite[J]. , 2010, 31(3): 851 -855 .
[4] JIE Ying, TANG Xiao-wei , LUAN Mao-tian. Finite-element free Galerkin coupling method for sand liquefaction-induced deformation[J]. , 2010, 31(8): 2643 -2647 .
[5] ZHANG Jian-xin, LIU Shuang-ju, ZHOU Jia-bin. Analysis of influence of foundation pits excavation unloading by top-down method on engineering structures[J]. , 2010, 31(S2): 218 -223 .
[6] LI Shu-cai，XU Bang-shu，DING Wan-tao，ZHANG Qing-song. Weighted function method for minimum rock cover thickness of subsea tunnel[J]. , 2009, 30(4): 989 -996 .
[7] LIU Yang, ZHAO Ming-jie. Theoretical model research on relationship between ultrasonic and stress of rock based on fractals and damage theory[J]. , 2009, 30(S1): 47 -52 .
[8] ZHANG Jun-hui. Analysis of deformation behavior of expressway widening engineering under different foundation treatments[J]. , 2011, 32(4): 1216 -1222 .
[9] WANG Liang-qing, P.H.S.W. Kulatilake, TANG Hui-ming, LIANG Ye , WU Qiong ,. Kinematic analyses of sliding and toppling failure of double free face rock mass slopes[J]. , 2011, 32(S1): 72 -77 .
[10] LI Xu, ZHANG Li-min, AO Guo-dong. Variations of pore structure, void ratio, and water content in soil drying process[J]. , 2011, 32(S1): 100 -105 .
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