›› 2011, Vol. 32 ›› Issue (5): 1399-1404.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of deformation of unsaturated soil based on steady-state void ratio

CHENG Yu1, 2, ZHOU Zheng-ming3   

  1. 1. Key Laboratory of Expressway Maintenance Technology Ministry of Transport, Ji?nan 250031, China; 2. Key Laboratory for Road Structure and Materials of Shandong Province, Ji?nan 250031, China; 3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2010-02-02 Online:2011-05-10 Published:2011-09-23

PDF (Chinese)

1905

Abstract: The unsaturated soils upon wetting may swell or collapse depending the soil types or soil’s void ratio. The particle structure of the unsaturated soil is considered to be in sub-stable and super stable states depending on its void ratio. Both the meta-stable and super stable states are maintained by the suction. The sub-stable and super stable structure becomes unstable upon wetting because of the suction reduction. There may exist a stable state that neither swelling nor collapsing will happen upon wetting. Employing the concept of stable state void ratio, a general formula is obtained which can describe both the swelling and collapsing behavior of the unsaturated soil.

Key words: unsaturated soils, generalized suction, steady-state void ratio, deformation

CLC Number: 

  • TU 43
[1] CHENG Hao, TANG Hui-ming, WU Qiong, LEI Guo-ping, . An elasto-plasticity extended Cam-clay model for unsaturated soils using explicit integration algorithm in FEM with hydraulic hysteresis [J]. Rock and Soil Mechanics, 2020, 41(2): 676-686.
[2] SONG Yi-min, ZHANG Yue, XU Hai-liang, WANG Ya-fei, HE Zhi-jie. Study on creep-slip and stick-slip deformation evolution of rock based on non-uniform characteristics [J]. Rock and Soil Mechanics, 2020, 41(2): 363-371.
[3] WANG Guo-hui, CHEN Wen-hua, NIE Qing-ke, CHEN Jun-hong, FAN Hui-hong, ZHANG Chuan, . Impacts of pit excavation on foundation piles in deep silty soil by centrifugal model tests [J]. Rock and Soil Mechanics, 2020, 41(2): 399-407.
[4] WANG Zhong-kai, XU Guang-li. Influence range and quantitative prediction of surface deformation during shield tunnelling and exiting stages [J]. Rock and Soil Mechanics, 2020, 41(1): 285-294.
[5] JIE Yu-xin, ZHANG Yan-yi, YANG Guang-hua, . Calculation method of wet deformation of earth-rock materials [J]. Rock and Soil Mechanics, 2019, 40(S1): 11-20.
[6] LI Zhi-cheng, FENG Xian-dao, SHENG Li-long, . Experimental study of deformation characteristics of pebble cushion with furrow for immersed tunnel [J]. Rock and Soil Mechanics, 2019, 40(S1): 189-194.
[7] ZHAI Ming-lei, GUO Bao-hua, WANG Chen-lin, JIAO Feng, . Compression-shear failure characteristics of rock with penetrated fracture under normal unloading condition [J]. Rock and Soil Mechanics, 2019, 40(S1): 217-223.
[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] LIU Zu-qiang, LUO Hong-ming, ZHENG Min, SHI Yun-jiang, . Study on expansion-shrinkage characteristics and deformation model for expansive soils in canal slope of South-to-North Water Diversion Project [J]. Rock and Soil Mechanics, 2019, 40(S1): 409-414.
[10] WANG Chuan-ying, WANG Yi-teng, HAN Zeng-qiang, WANG Jin-chao, ZOU Xian-jian, HU Sheng, . An in-situ stress measurement method based on borehole shape analysis [J]. Rock and Soil Mechanics, 2019, 40(S1): 549-556.
[11] HOU Gong-yu, JING Hao-yong, LIANG Jin-ping, ZHANG Guang-dong, TAN Jin-xin, ZHANG Yong-kang, YANG Xi, . Experimental study of deformation and acoustic emission characteristics of rectangular roadway under different unloading rates [J]. Rock and Soil Mechanics, 2019, 40(9): 3309-3318.
[12] LEI Jiang, CHEN Wei-zhong, LI Fan-fan, YU Hong-dan, MA Yong-shang, XIE Hua-dong, WANG Fu-gang, . Mechanical properties of surrounding rock in diversion tunnel of water diversion project from Hongyan River to Shitou River [J]. Rock and Soil Mechanics, 2019, 40(9): 3435-3446.
[13] ZHANG Yi-hu, WU Ai-qing, ZHOU Huo-ming, WANG Shuai, LUO Rong, FAN Lei. Review of bearing capacity and deformation characteristics of tunnel- type anchorage for suspension bridge [J]. Rock and Soil Mechanics, 2019, 40(9): 3576-3584.
[14] LI Qiao, MENG Fan-zeng, NIU Yuan-zhi. Bridge pier deformation and control technology of jacking framed bridge with loading under crossing high speed railway [J]. Rock and Soil Mechanics, 2019, 40(9): 3618-3624.
[15] CHEN Wei-zhong, TIAN Yun, WANG Xue-hai, TIAN Hong-ming, CAO Huai-xuan, XIE Hua-dong, . Squeezing prediction of tunnel in soft rocks based on modified [BQ] [J]. Rock and Soil Mechanics, 2019, 40(8): 3125-3134.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LIU Xiao-wen，CHANG Li-jun，HU Xiao-rong. Experimental research of matric suction with water content and dry density of unsaturated laterite[J]. , 2009, 30(11): 3302 -3306 .
[2] HUANG Jian-hua，SONG Er-xiang. Research on mechanical properties of frozen curtain in large anchorage foundation pit engineering[J]. , 2009, 30(11): 3372 -3378 .
[3] WANG Guan-shi, LI Chang-hong, CHEN Bao-jun, LI Sh-ihai. Propagation law of stress wave in nonlinear structural surface medium[J]. , 2009, 30(12): 3747 -3752 .
[4] WANG Zhao-yang, XU Qiang, NI Wan-kui. Study of undisturbed loess stress-strain relation during CT test[J]. , 2010, 31(2): 387 -391 .
[5] DENG Qin，GUO Ming-wei，LI Chun-guang，GE Xiu-run. Vector sum method for slope stability analysis based on boundary element method[J]. , 2010, 31(6): 1971 -1976 .
[6] WAN Shao-shi, NIAN Ting-kai, JIANG Jing-cai, LUAN Mao-tian. Discussion on several issues in slope stability analysis based on shear strength reduction finite element methods (SSR-FEM)[J]. , 2010, 31(7): 2283 -2288 .
[7] YAN Tie, LI Wei, BI Xue-liang. Research on effective stress model in porous media based on fractal method[J]. , 2010, 31(8): 2625 -2629 .
[8] ZHAO Shang-yi, ZHENG Ying-ren, LI An-hong, QIU Wen-ping, TANG Xiao-song. Application of multi-row embedded anti-slide piles to landslide of Wulong county government[J]. , 2009, 30(S1): 160 -164 .
[9] LIU Zhen-ping, HE Huai-jian, ZHU Fa-hua. Study of technology of fast 3D modeling and visualization based on borehole data[J]. , 2009, 30(S1): 260 -266 .
[10] WEI Hou-zhen, YAN Rong-tao, WEI Chang-fu, WU Er-lin, CHEN Pan, TIAN Hui-hui. Summary of researches for phase-equilibrium of natural gas hydrates in bearing sediments[J]. , 2011, 32(8): 2287 -2294 .
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