›› 2009, Vol. 30 ›› Issue (11): 3307-3312.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Modelling disturbed state and anisotropy of natural soft clays

YU Xiao-jun1, 2，SHI Jian-yong1，XU Yang-bin1   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. School of Civil Engineering, Yancheng Institute of Technology, Yancheng 224003, China
  • Received:2009-02-23 Online:2009-11-10 Published:2010-01-07

PDF (Chinese)

2987

Abstract:

Based on tests, electrical resistivity indexes are taken to reflect the changes in soil structures and define the disturbed variable, which is convenient, continuous, economical and practicable. Meanwhile, disturbed function is built by the results of undrained triaxial shear tests and electrical resistivity tests. Additionally, rotational hardening parameter is taken to describe disturbed state of natural soft clays; accordingly, a disturbed state concept constitutive model taking into account stress-induced anisotropy for soft clays is presented. As a result, the traditional methods measuring disturbed variable and establishing disturbed function may be optimized, and the applicability and accuracy of model may be improved. Results from undrained triaxial shear tests show that the model can describe the stress-strain characteristics fairly well and could be applied to practice.

Key words: soft clay, electrical resistivity index, anisotropy, disturbed state concept, constitutive model

CLC Number: 

  • TU 411
[1] JIN Qing, WANG Yi-lin, CUI Xin-zhuang, WANG Cheng-jun, ZHANG Ke, LIU Zheng-yin, . Deformation behaviour of geobelt in weathered rock material-tire shred lightweight soil under pullout condition [J]. Rock and Soil Mechanics, 2020, 41(2): 408-418.
[2] XU Jie, ZHOU Jian, LUO Ling-hui, YU Liang-gui, . Study on anisotropic permeability model for mixed kaolin-montmorillonite clays [J]. Rock and Soil Mechanics, 2020, 41(2): 469-476.
[3] DENG Zi-qian, CHEN Jia-shuai, WANG Jian-wei, LIU Xiao-wen, . Constitutive model and experimental study of uniform yield surface based on SFG model [J]. Rock and Soil Mechanics, 2020, 41(2): 527-534.
[4] LI Xiao-xuan, LI Tao, PENG Li-yun, . Elastoplastic two-surface model for unsaturated cohesive soils under cyclic loading with controlled matric suction [J]. Rock and Soil Mechanics, 2020, 41(2): 552-560.
[5] SUN Hong, SONG Chun-yu, TENG Mu-wei, GE Xiu-run. Pore evolution characteristics of soft clay under loading [J]. Rock and Soil Mechanics, 2020, 41(1): 141-146.
[6] HE Peng-fei, MA Wei, MU Yan-hu, HUANG Yong-ting, DONG Jian-hua, . Experimental analysis of interfacial shear behavior of loess-mortar block and construction of constitutive model [J]. Rock and Soil Mechanics, 2019, 40(S1): 82-90.
[7] DAI Guo-liang, ZHU Wen-bo, GUO Jing, GONG Wei-ming, ZHAO Xue-liang, . Experiments on vertical uplift bearing capacity of suction caisson foundation in soft clay [J]. Rock and Soil Mechanics, 2019, 40(S1): 119-126.
[8] ZHANG Zhi-guo, LI Sheng-nan, ZHANG Cheng-ping, WANG Zhi-wei, . Analysis of stratum deformation and lining response induced by shield construction considering influences of underground water level rise and fall [J]. Rock and Soil Mechanics, 2019, 40(S1): 281-296.
[9] YE Guan-bao, ZHENG Wen-qiang, ZHANG Zhen, . Investigation on distribution of negative friction of frictional piles in large filling sites [J]. Rock and Soil Mechanics, 2019, 40(S1): 440-448.
[10] PENG Shou-jian, YUE Yu-qing, LIU Yi-xin, XU Jiang, . Anisotropic characteristics and shear mechanical properties of different genetic structural planes [J]. Rock and Soil Mechanics, 2019, 40(9): 3291-3299.
[11] ZHANG Chao, YANG Qi-jun, CAO Wen-gui, . Study of damage constitutive model of brittle rock considering post-peak stress dropping rate [J]. Rock and Soil Mechanics, 2019, 40(8): 3099-3106.
[12] LIU Si-hong, SHEN Chao-min, MAO Hang-yu, SUN Yi. State-dependent elastoplastic constitutive model for rockfill materials [J]. Rock and Soil Mechanics, 2019, 40(8): 2891-2898.
[13] ZHANG Ling-kai, WANG Rui, ZHANG Jian-min, TANG Xin-jun, . A static and dynamic constitutive model of rockfill material considering particle breakage [J]. Rock and Soil Mechanics, 2019, 40(7): 2547-2554.
[14] WANG Zhen, ZHU Zhen-de, CHEN Hui-guan, ZHU Shu, . A thermo-hydro-mechanical coupled constitutive model for rocks under freeze-thaw cycles [J]. Rock and Soil Mechanics, 2019, 40(7): 2608-2616.
[15] YIN Xiao-meng, YAN E-chuan, WANG Lu-nan, CHEN Li, . Quantitative microstructure information extraction and microscopic morphology analysis of anisotropic schist [J]. Rock and Soil Mechanics, 2019, 40(7): 2617-2627.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] TAN Xian-jun, CHEN Wei-zhong, YANG Jian-ping, YANG Chun-he. Study of THM-damage coupling model of gas storage in salt rock with interlayer[J]. , 2009, 30(12): 3633 -3641 .
[2] YE Jun-neng. Dynamic response of track system-layered transversely isotropic saturated subgrade to train loads[J]. , 2010, 31(5): 1597 -1603 .
[3] WEI Xing，WANG Gang，YU Zhi-ling. FEM of traffic-load-induced settlement of road on soft clay[J]. , 2010, 31(6): 2011 -2015 .
[4] WEN Shi-yi, LI Jing , SU Xia , YAO Xiong. Studies of mesomechanical structure characters of surrounding rock failure under complex stress state[J]. , 2010, 31(8): 2399 -2406 .
[5] ZHANG Zhi-qiang, HE Ben-guo, HE Chuan. Study of load of lining under condition of saturated stratum for underwater tunnels[J]. , 2010, 31(8): 2465 -2470 .
[6] MAO Ning，ZHANG Yao-liang. Typical examples of simple methods to find empirical formulas[J]. , 2010, 31(9): 2978 -2982 .
[7] YU Tian-tang. Extended finite element method for modeling three-dimensional crack problems[J]. , 2010, 31(10): 3280 -3285 .
[8] LIU Jie，LI Jian-lin，QU Jian-jun，Cheng Xing，LI Jian-wu，LUO Shi-wei. Multiple factors analysis of influence of developing horizontal displacement at Dagangshan dam abutment slope based on unloading rock mass mechanics[J]. , 2010, 31(11): 3619 -3626 .
[9] LI Wei-hua, ZHAO Cheng-gang, DU Nan-xin. Analysis of effects of saturated soft interlayer on seismic responses of metro station[J]. , 2010, 31(12): 3958 -3963 .
[10] HAN Xian-min. Study of construction technology and mechanical effect of Guanjiao tunnel in shallow-buried sandy stratum in Xining-Golmud 2nd line[J]. , 2010, 31(S2): 297 -302 .
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