›› 2011, Vol. 32 ›› Issue (S1): 160-165.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A statistic damage model of cemented soil based on variation of electric current

DONG Xiao-qiang1, 2, BAI Xiao-hong1, YANG Zi-chao3, LÜ Yong-kang2, HUANG Xin-en4   

  1. 1. College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 2. Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China; 3. College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 4. School of Science, North University of China, Taiyuan 030051 China
  • Received:2010-12-05 Online:2011-05-15 Published:2011-05-16

PDF (Chinese)

1495

Abstract: In order to put the resistivity method into damage study, firstly soaking cemented soil sample in pure water, sewage and industrial wastewater for ninety days, the variation of its electric current are measured in the unconfined compression tests. Combining pictures, the relationships between the current-strain curves and stress-strain curves are compared. Being a basic parameter of the damage degree, the concept of “effective current” has been put forward; and based on it, the damage model of cemented soil is obtained through the statistical method. Finally, the damage model of cemented soil has been normalized. The analysis shows that the variation of current is easy to measure; and the current are varied regularly with the increase of strain. The current-strain curves and stress-strain curves can be divided into four stages which well describe the whole damage process of cemented soil. This model can be unified into a quartic polynomial equation in the whole strain range; and the equation form is irrelevant with cement type and pollution type. The results fully illustrate that it is completely feasible through the current changes to reflect the structural damage process of cemented soil.

Key words: cemented soil, effective current, current-strain curves, stress-strain curves, damage

CLC Number: 

  • TU 43
null
[1] CHEN Wei-zhong, LI Fan-fan, LEI Jiang, YU Hong-dan, MA Yong-shang, . Study on creep characteristics of claystone under thermo-hydro-mechanical coupling [J]. Rock and Soil Mechanics, 2020, 41(2): 379-388.
[2] ZHANG Feng-rui, JIANG An-nan, YANG Xiu-rong, SHEN Fa-yi. Experimental and model research on shear creep of granite under freeze-thaw cycles [J]. Rock and Soil Mechanics, 2020, 41(2): 509-519.
[3] LIANG Ke, CHEN Guo-xing, LIU Kang, WANG Yan-zhen, . Degradation properties and prediction model of maximum shear modulus of saturated coral sand under cyclic triaxial loading [J]. Rock and Soil Mechanics, 2020, 41(2): 601-611.
[4] LI Fan-fan, CHEN Wei-zhong, LEI Jiang, YU Hong-dan, MA Yong-shang, . Study of mechanical properties of claystone based on plastic damage [J]. Rock and Soil Mechanics, 2020, 41(1): 132-140.
[5] SONG Yong-jun, YANG Hui-min, ZHANG Lei-tao, REN Jian-xi. CT real-time monitoring on uniaxial damage of frozen red sandstone [J]. Rock and Soil Mechanics, 2019, 40(S1): 152-160.
[6] FAN Yun-hui, ZHU Qi-zhi, NI Tao, ZHANG Kun, ZHANG Zhen-nan, . A brittle-ductile transition constitutive model based on discrete elastic tensors [J]. Rock and Soil Mechanics, 2019, 40(S1): 181-188.
[7] LI Jie-lin, ZHU Long-yin, ZHOU Ke-ping, LIU Han-wen, CAO Shan-peng, . Damage characteristics of sandstone pore structure under freeze-thaw cycles [J]. Rock and Soil Mechanics, 2019, 40(9): 3524-3532.
[8] 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.
[9] WANG Rui, YAN Shuai, BAI Jian-biao, CHANG Zhi-guo, SONG Yuan-ba, . Theoretical analysis of the destabilization mechanism and the damaged width of rib pillar in open-pit highwall mining [J]. Rock and Soil Mechanics, 2019, 40(8): 3167-3180.
[10] SUN Feng, XUE Shi-feng, PANG Ming-yu, TANG Mei-rong, ZHANG Xiang, LI Chuan, . 3D simulation of fracture growth from perforation to near-wellbore in horizontal wells based on continuum damage model [J]. Rock and Soil Mechanics, 2019, 40(8): 3255-3261.
[11] LIU Xin-rong, DENG Zhi-yun, LIU Yong-quan, LIU SHU-lin, LU Yu-ming, . Study of cumulative damage and failure mode of horizontal layered rock slope subjected to seismic loads [J]. Rock and Soil Mechanics, 2019, 40(7): 2507-2516.
[12] MA De-peng, ZHOU Yan, LIU Chuan-xiao, SHANG Yan-dong, . Energy evolution characteristics of coal failure in triaxial tests under different unloading confining pressure rates [J]. Rock and Soil Mechanics, 2019, 40(7): 2645-2652.
[13] MA Qiu-feng, QIN Yue-ping, ZHOU Tian-bai, YANG Xiao-bin. Mechanical properties and constitutive model of porous rock under loading and unloading [J]. Rock and Soil Mechanics, 2019, 40(7): 2673-2685.
[14] WANG Jie, SONG Wei-dong, TAN Yu-ye, FU Jian-xin, CAO Shuai, . Damage constitutive model and strength criterion of horizontal stratified cemented backfill [J]. Rock and Soil Mechanics, 2019, 40(5): 1731-1739.
[15] ZHANG Wei, QU Zhan-qing, GUO Tian-kui, SUN Jiang. Numerical simulation of hydraulic fracturing in hot dry rocks under the influence of thermal stress [J]. Rock and Soil Mechanics, 2019, 40(5): 2001-2008.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WANG Chuan-ying, HU Pei-liang, SUN Wei-chun. Method for evaluating rock mass integrity based on borehole camera technology[J]. , 2010, 31(4): 1326 -1330 .
[2] LI Hua-ming, JIANG Guan-lu, LIU Xian-feng. Study of dynamic characteristics of saturated silty soil ground treated by CFG columns[J]. , 2010, 31(5): 1550 -1554 .
[3] TAN Yun-zhi, KONG Ling-wei, GUO Ai-guo, WAN Zhi. Capillary effect of moisture transfer and its numerical simulation of compacted laterite soil[J]. , 2010, 31(7): 2289 -2294 .
[4] WANG Yun-gang, XIONG Kai, LING Dao-sheng. Upper bound limit analysis of slope stability based on translational and rotational failure mechanism[J]. , 2010, 31(8): 2619 -2624 .
[5] LONG Zhao，ZHAO Ming-hua，ZHANG En-xiang，LIU Jun-long. A simplified method for calculating critical anchorage length of bolt[J]. , 2010, 31(9): 2991 -2994 .
[6] SHI Dan-da, ZHOU Jian, JIA Min-cai, YANG Yong-xiang. Back analysis of parameters and long-term settlement prediction of harbor soft ground considering its creep behavior[J]. , 2009, 30(3): 746 -750 .
[7] DENG Zong-wei, LENG Wu-ming, LI Zhi-yong, YUE Zhi-ping. Finite element analysis of time effect for coupled problem of temperature and stress fields in slope supported by shotcrete[J]. , 2009, 30(4): 1153 -1158 .
[8] DING Zhou-xiang，QIU Yu-liang，LI Tao. Spatial asymmetry of excess pore pressure during nonlinear consolidation with two-way drainage[J]. , 2012, 33(6): 1829 -1838 .
[9] TIAN Kan-liang , ZHANG Hui-li , MA Jun . Test study of loess structure based on static strength conditions[J]. , 2012, 33(7): 1993 -1999 .
[10] FEI Kang ，WANG Jun-jun ，CHEN Yi . A simplified method for analyzing soil arching effect in pile-supported embankments[J]. , 2012, 33(8): 2408 -2414 .
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