›› 2008, Vol. 29 ›› Issue (8): 2277-2282.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on undrained shear behavior and hyperbolic stress-strain relationship of saturated clays

QI Jian-feng, LUAN Mao-tian, WANG Zhong-tao, NIE Ying, FAN Qing-lai   

  1. State Key Laboratory of Coastal and Offshore Engineering, Institute of Geotechnicial Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2006-03-03 Online:2008-08-11 Published:2013-08-02

PDF (PC)

1029

Abstract: A series of unconsolidated-undrained (UU) triaxial tests are performed in order to examine the effect of strain rate and confining pressure on strength and stress-strain behavior of reconstituted saturated clays. Strain rate is controlled to vary between 0.015 %/min and 3.75 %/min. It is found by comparing the experimental data that strength and stress-strain behavior are mainly affected by strain rate, however, they are almost independent on confining pressure. Undrained shear strength of the saturated clay increases with increase of strain rate; and the increase of 70 % of strength may be attained. An empirical correlation between strength and strain rate is proposed after a given normalization. Furthermore, the hyperbolic constitutive model of nonlinearity is recommended in order to take the effect of strain rate on the stress-strain relation into consideration; and the experimentally-based procedure for defining the parameters in the hyperbolic model is given. The model is verified through test data in the monotonic triaxial and torsional shear tests.

Key words: saturated clays, strain rate, stress-strain relations, hyperbolic stress-strain model

CLC Number: 

  • TU 411.3
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
[1] WANG Teng, WU Rui. Study of vertical penetration resistance of seabed pipelines in cohesive soil [J]. Rock and Soil Mechanics, 2019, 40(3): 871-878.
[2] GAO Feng, XIONG Xin, ZHOU Ke-ping, LI Jie-lin, SHI Wen-chao, . Strength deterioration model of saturated sandstone under freeze-thaw cycles [J]. Rock and Soil Mechanics, 2019, 40(3): 926-932.
[3] HUANG Jue-hao, CHEN Jian, KONG Ling-zhi, LIU Fu-sheng, KE Wen-hui, QIU Yue-feng, , LI Jian-bin, . Experimental study of dynamic behaviors of saturated soft clay considering coupling effects of cyclic confining pressure and vibration frequency [J]. Rock and Soil Mechanics, 2019, 40(1): 173-182.
[4] MENG Qing-shan, FAN Chao, ZENG Wei-xing, YU Ke-fu, . Tests on dynamic properties of coral-reef limestone in South China Sea [J]. Rock and Soil Mechanics, 2019, 40(1): 183-190.
[5] ZHAO Wu-sheng, CHEN Wei-zhong, MA Shao-sen, ZHAO Kun, SONG Wan-peng, LI Can，. Isolation effect of foamed concrete layer on the seismic responses of tunnel [J]. , 2018, 39(3): 1027-1036.
[6] XIANG Peng, JI Hong-guang, CAI Mei-feng, ZHANG Yue-zheng. Dynamic energy release mechanism and geometric scale feature of ejection rockburst source [J]. , 2018, 39(2): 457-466.
[7] JIANG Jing-shan, CHENG Zhan-lin, ZUO Yong-zhen, DING Hong-shun,. Effect of dry density on mechanical properties of rockfill materials [J]. , 2018, 39(2): 507-514.
[8] ZHOU En-quan, ZHU Xiao-dong, LU Jian-fei, WANG Bing-ui, . Apparatus development and experimental study for fluid characteristics of liquefied sand [J]. Rock and Soil Mechanics, 2018, 39(12): 4698-4706.
[9] 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.
[10] LIU Han-bing, ZHANG Hu-zhu, WANG Jing，. Effect of freeze-thaw and water content on mechanical properties of compacted clayey soil [J]. , 2018, 39(1): 158-164.
[11] MA Lin-jian, YANG Fa, WANG Ming-yang, LI Zeng, . Generalized Hoek-Brown dynamic strength criterion incorporating strain rate effect [J]. , 2017, 38(S2): 27-32.
[12] LIU Jun-xin, ZHANG Ke, LIU Wei, SHI Xi-lin,. Experimental study of mechanical behaviours of shale under different confining pressures and different strain rates [J]. , 2017, 38(S1): 43-52.
[13] CHEN Le-qiu, ZHANG Jia-sheng, CHEN Jun-hua, CHEN Ji-guang，. Testing of static and dynamic strength properties of cement-improved argillaceous-slate coarse-grained soil [J]. , 2017, 38(7): 1903-1910.
[14] LIN Bo, ZHANG Feng, FENG De-cheng, MA Hong-yan, FENG Xin,. Experimental investigation on strain rate effects of saturated clay subjected to freeze-thaw cycles [J]. , 2017, 38(7): 2007-2014.
[15] LIN Cheng-xiang, LING Dao-sheng, ZHONG Shi-ying，. Experimental research and discrete element analysis of shear strength of lunar soil simulants [J]. , 2017, 38(3): 893-901.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] XIAO Heng-lin，ZHANG Jin-feng，HE Jun. Research on measuring method of flow velocity based on distributed optical fiber sensing technology[J]. , 2009, 30(11): 3543 -3547 .
[2] CHEN Jian-sheng，CHEN Cong-xin，LU Zu-de，YAO Wen-sheng. Direct shear test for strength and deformation characteristics of highly decomposed hornfels[J]. , 2010, 31(9): 2869 -2874 .
[3] WANG Xin-zhi, WANG Ren, MENG Qin-shan, LIU Xiao-peng. Study of plate load test of calcareous sand[J]. , 2009, 30(1): 147 -151 .
[4] CHEN Zhi-qiang, ZHANG Yong-xing, ZHOU Jian-ying. Experimental study of deep tunnel surrounding rock rockburst proneness with similarity material simulating method based on digital speckle correlation technique[J]. , 2011, 32(S1): 141 -148 .
[5] SHI Hai-ying , GONG Xiao-nan , YU Jian-lin , LIAN Feng. A calculation method of pile spacing based on Hewlett soil arching theory[J]. , 2011, 32(S1): 351 -0355 .
[6] DU Wen-qi, WANG Gang. Statistical analysis of earthquake-induced sliding displacements of earth structures[J]. , 2011, 32(S1): 520 -0525 .
[7] XU Zhen-hao , LI Shu-cai , LI Li-ping , HOU Jian-gang , SUI Bin , SHI Shao-shuai. Risk assessment of water or mud inrush of karst tunnels based on analytic hierarchy process[J]. , 2011, 32(6): 1757 -1766 .
[8] WEI Hou-zhen, YAN Rong-tao, CHEN Pan, TIAN Hui-hui, WU Er-lin, WEI Chang-fu. Deformation and failure behavior of carbon dioxide hydrate-bearing sands with different hydrate contents under triaxial shear tests[J]. , 2011, 32(S2): 198 -203 .
[9] WU Yi. An equivalent far-field artificial dynamic-boundary condition for one-dimensional problem[J]. , 2011, 32(11): 3508 -3514 .
[10] YE Guan-bao , HE Zhi-yu , GAO Yan-bin , MA Dong-mei , ZHONG Wei-tao. Field test study of load distribution of anchoring section of pressure dispersed anchor cables[J]. , 2011, 32(12): 3561 -3565 .
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