›› 2012, Vol. 33 ›› Issue (S2): 29-0037.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Compression deformation characteristics of structural clays

CHEN Pan1, WEI Chang-fu1, LI Yong-he2, WANG Ji-li1, MA Tian-tian1, WEI Hou-zhen1   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences Wuhan, 430071, China; 2. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China
  • Received:2012-05-28 Online:2012-11-22 Published:2012-12-11

PDF (Chinese)

1732

Abstract: The effect of structure is important for the deformation and strength of marine soft clays. The replacing depth is also related to the structure of soft clays during the dealing progress of soft foundation, in which the blasting-based squeezing and replacing method is used. The structure may be an uncertain factor to evaluate the settlement and the stability of the embankment. In order to explore the effect of structure on the settlement of the foundation, a compression model of structural soils is established for analyzing the compression characteristics of marine soft clays quantitatively. The calibration method of model parameters is also given. The compression model is verified by the experimental data from literatures. The results show that the model is not only effective for predicting well the deformation at the 1D stress state but can be used to describe the compression characteristics at triaxial stress state. Then the model is adopted to analyze the compression characteristics of marine soft clays in Xuanmen area, Zhejiang province. The effect of structure on the compression deformation of soft clays in the area is simulated well by the new model. The model offers a quantificational method to predict the settlement of the embankment in the area. Furthermore, the model will be helpful for reinforcing the theoretical basis for design and construction of the embankment in the structural clay area.

Key words: structure, clay soils, settlement, compression model, blasting-based squeezing and replacing method

CLC Number: 

  • TU 432
[1] ZHANG Shan-kai, LENG Xian-lun, SHENG Qian, . Study of water swelling and softening characteristics of expansive rock [J]. Rock and Soil Mechanics, 2020, 41(2): 561-570.
[2] ZHU Yan-peng, TAO Jun, YANG Xiao-hui, PENG Jun-guo, WU Qiang, . Design and numerical analyses of high-fill slope strengthened by frame with prestressed anchor-plates [J]. Rock and Soil Mechanics, 2020, 41(2): 612-623.
[3] HE Zhi-jun, LEI Hao-cheng, XIA Zhang-qi, ZHAO Lian-heng. Analysis of settlement and internal force displacement of single pile in multilayer soft soil foundation [J]. Rock and Soil Mechanics, 2020, 41(2): 655-666.
[4] LIU Cheng-yu, CHEN Bo-wen, LUO Hong-lin, RUAN Jia-chun, . Experimental study of seepage erosion induced by pipeline damage under full pipe flow condition [J]. Rock and Soil Mechanics, 2020, 41(1): 1-10.
[5] LIU Zhong-yu, XIA Yang-yang, ZHANG Jia-chao, ZHU Xin-mu. One-dimensional elastic visco-plastic consolidation analysis of saturated clay considering Hansbo’s flow [J]. Rock and Soil Mechanics, 2020, 41(1): 11-22.
[6] WANG Long, ZHU Jun-gao, GUO Wan-li, LU Yang-yang, . Compression model for cohesionless soils and its verification [J]. Rock and Soil Mechanics, 2020, 41(1): 229-234.
[7] LEI Hua-yang, HU Yao, LEI Shuang-hua, QI Zi-yang, XU Ying-gang, . Analysis of microstructure characteristics of air-booster vacuum preloading for ultra-soft dredger fills [J]. Rock and Soil Mechanics, 2019, 40(S1): 32-40.
[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] 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.
[10] ZHAO Bo, ZHANG Guang-qing, TANG Mei-rong, ZHUANG Jian-man, LIN Can-kun, . Mechanism of the effect of long-term water injection on mechanical properties of tight sandstone [J]. Rock and Soil Mechanics, 2019, 40(9): 3344-3350.
[11] DENG Hua-feng, ZHI Yong-yan, DUAN Ling-ling, PAN Deng, LI Jian-lin. Mechanical properties of sandstone and damage evolution of microstructure under water-rock interaction [J]. Rock and Soil Mechanics, 2019, 40(9): 3447-3456.
[12] WANG Chong, HU Da-wei, REN Jin-ming, ZHOU Hui, LU Jing-jing, LIU Chuan-xin, . Influence of erosive environment on permeability and mechanical properties of underground structures [J]. Rock and Soil Mechanics, 2019, 40(9): 3457-3464.
[13] LU Liang, SHI Tong-hui, YANG Dong, . Control effect of uneven settlement of subgrade by composited method of replacement load shedding and reinforced embankment [J]. Rock and Soil Mechanics, 2019, 40(9): 3474-3482.
[14] LI Ling, LIU Jin-quan, LIU Zao-bao, LIU Tao-gen, WANG Wei, SHAO Jian-fu, . Experimental investigations on compaction properties of sand-clay mixture at high pressure [J]. Rock and Soil Mechanics, 2019, 40(9): 3502-3514.
[15] 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.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LIU Xiao，TANG Hui-ming，LIU Yu. A new model for landslide displacement prediction based on set pair analysis and fuzzy-Markov chain[J]. , 2009, 30(11): 3399 -3405 .
[2] HU Da-wei, ZHOU Hui, XIE Shou-yi, ZHANG Kai, SHAO Jian-fu, FENG. Study of Biot’s coefficients of marble during plastic deformation phase[J]. , 2009, 30(12): 3727 -3732 .
[3] WEI Gang，GUO Zhi-we，WEI Xin-jiang，CHEN Wei-jun. Analysis of coupled seepage and stress of shield tunnel launching accident in soft clay[J]. , 2010, 31(S1): 383 -387 .
[4] ZHU Jian-ming，PENG Xin-po，YAO Yang-ping，XU Jin-hai. Application of SMP failure criterion to computing limit strength of coal pillars[J]. , 2010, 31(9): 2987 -2990 .
[5] YUAN Xi-zhong, LI Ning , ZHAO Xiu-yun, YANG Yin-tao. Analysis of sensitivity of frozen ground bearing capacity to climate change in Northeast China permafrost regions[J]. , 2010, 31(10): 3265 -3272 .
[6] BAI Bing, LI Xiao-chun, SHI Lu, TANG Li-zhong. Slope identity of elastoplastic stress-strain curve and its verification and application[J]. , 2010, 31(12): 3789 -3792 .
[7] LI Zhan-hai，ZHU Wan-cheng，FENG Xia-ting，LI Shao-jun，ZHOU Hui，CHEN Bing-rui. Effect of lateral pressure coefficients on damage and failure process of horseshoe-shaped tunnel[J]. , 2010, 31(S2): 434 -441 .
[8] HOU Gong-yu，NIU Xiao-song. Perfect elastoplastic solution of axisymmetric circular openings in rock mass based on Levy-Mises constitutive relation and D-P yield criterion[J]. , 2009, 30(6): 1555 -1562 .
[9] CAI Hui-teng, WEI Fu-quan, CAI Zong-wen. Study of silty clay dynamic characteristics in Chongqing downtown area[J]. , 2009, 30(S2): 224 -228 .
[10] SONG Ling　, LIU Feng-yin　, LI Ning　. On mechanism of rotary cone penetration test[J]. , 2011, 32(S1): 787 -0792 .
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