›› 2007, Vol. 28 ›› Issue (S1): 868-872.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

FEM analysis of vertical soil deformation caused by vacuum pumping

AI Ying-bo1, 2, LIU Jia-cai3, SHI Jian-yong1, 2, LEI Guo-hui1, 2   

  1. 1. Key Laboratory for Geotechnical Engineering of Ministry of Water Resources, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 21098, China; 3. Nanjing University of Technology, Nanjing 210098
  • Received:2007-04-21 Online:2007-10-25 Published:2014-03-28

PDF (PC)

279

Abstract: When deep and thick soft ground is improved by vacuum preloading, lateral contract deformations will be induced in the soils, and this is beneficial to ground stability. On the other hand, the lateral deformation towards the vacuum preloading area will have an adverse effect on the adjacent buildings, underground pipelines, road embankments and other structures. Serious engineering failures may take place, such as crack of the pipelines, collapse of the retaining walls, and damage of the road embankments. In order to investigate the impact of the vacuum preloading on the surrounding soils, FEM analysis has been carried out, considering the influence of soils’ tension crack. The variation behavior during the vacuum preloading process is studied on the settlement at different depths and at different distances away from the preloading area. It has been found that the calculation results from the FEM analysis based on the Biot’s theory and the consideration of tension crack are consistent with the measurement results of the settlements and the extents of the influence outside the preloading area.

Key words: vacuum preloading, settlement, FEM analysis, tension crack of soils

CLC Number: 

  • TU 443
  • 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] HUANG Da-wei, ZHOU Shun-hua, FENG Qing-song, LUO Kun, LEI Xiao-yan, XU You-jun, . Analysis for vertical earth pressure transference on overlaying soils of shield tunnel under uniform surface surcharge [J]. Rock and Soil Mechanics, 2019, 40(6): 2213-2220.
[2] ZHANG Zhi-guo, ZHANG Rui, HUANG Mao-song, GONG Jian-fei, . Optimization analysis of pile group foundation based on differential settlement control and axial stiffness under vertical loads [J]. Rock and Soil Mechanics, 2019, 40(6): 2354-2368.
[3] LIU Nian-wu, CHEN Yi-tian, GONG Xiao-nan, YU Ji-tao, . Analysis of deformation characteristics of foundation pit of metro station and adjacent buildings induced by deep excavation in soft soil [J]. Rock and Soil Mechanics, 2019, 40(4): 1515-1525.
[4] LIU Cheng-yu, ZHANG Xiang, CHENG Kai, CHEN Bo-wen, . Experimental study of settlement caused by water and sand inrush in underground engineering [J]. Rock and Soil Mechanics, 2019, 40(3): 843-851.
[5] TAN Guo-hong, XIAO Hai-zhu, DU Xun, HU Wen-jun. Settlement analysis of caisson foundation under main tower of a long span cable-stayed bridge for highway and railway [J]. Rock and Soil Mechanics, 2019, 40(3): 1113-1120.
[6] XU Peng, JIANG Guan-lu, REN Shi-jie, TIAN Hong-cheng, WANG Zhi-meng, . Experimental study of dynamic response of subgrade with red mudstone and improved red mudstone [J]. Rock and Soil Mechanics, 2019, 40(2): 678-683.
[7] ZHONG Guo-qiang, WANG Hao, LI Li, WANG Cheng-tang, XIE Bi-ting, . Prediction of maximum settlement of foundation pit based on SFLA-GRNN model [J]. Rock and Soil Mechanics, 2019, 40(2): 792-798.
[8] FEI Kang, DAI Di, HONG Wei, . A simplified method for working performance analysis of single energy piles [J]. Rock and Soil Mechanics, 2019, 40(1): 70-80.
[9] WANG Jian-jun, CHEN Fu-quan, LI Da-yong. A simple solution of settlement for low reinforced embankments on Kerr foundation [J]. Rock and Soil Mechanics, 2019, 40(1): 250-259.
[10] DU Wei-fei, ZHENG Jian-guo, LIU Zheng-hong, ZHANG Ji-wen, YU Yong-tang, . Settlement behavior of high loess-filled foundation and impact from exhaust conditions [J]. Rock and Soil Mechanics, 2019, 40(1): 325-331.
[11] YANG Gong-biao, ZHANG Cheng-ping, MIN Bo, CAI Yi, . Elastic solution of soil displacement induced by shallow circular tunnel with a cavern in a stratum using function of complex variable method [J]. Rock and Soil Mechanics, 2018, 39(S2): 25-36.
[12] ZHU Ning ， ZHOU Yang , LIU Wei, SHI Pei-xin, WU Ben，. Study of silty soil behavior disturbed for installation of diaphragm wall in Suzhou [J]. , 2018, 39(S1): 529-536.
[13] REN Lian-wei, ZHOU Gui-lin, DUN Zhi-lin, HE Ting-yin, YANG Quan-wei, ZHANG Min-xia，. Case study on suitability and settlement of foundation in goaf site [J]. , 2018, 39(8): 2922-2932.
[14] LAI Feng-wen, CHEN Fu-quan, WAN Liang-long,. Vertical stress calculation of shallow foundations based on partially developed soil arching effect [J]. , 2018, 39(7): 2546-2554.
[15] LIU Xiao-ke, LU Qun, LU Shi-wei, LIU Chun-long, GUO Shao-long,. Vacuum penetration and ultimate pull-out capacity of low skirted suction caissons [J]. , 2018, 39(6): 2089-2098.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WEI Li，CHAI Shou-xi，CAI Hong-zhou，WANG Xiao-yan，LI Min3，SHI Qian. Research on tensility of wheat straw for reinforced material[J]. , 2010, 31(1): 128 -132 .
[2] SUN De-an，CHEN Bo. Mechanical behavior of remolded overconsolidated Shanghai soft clay and its elastoplastic simulation[J]. , 2010, 31(6): 1739 -1743 .
[3] JING Zhi-dong, LIU Jun-xin. Experimental research on dynamic deformations of semi-rigid structures of subgrade bed-mudstone of red beds[J]. , 2010, 31(7): 2116 -2121 .
[4] LIU Zheng-hong，LIAO Yan-hong，ZHANG Yu-shou. Preliminary study of physico-mechanical properties of Luanda sand[J]. , 2010, 31(S1): 121 -126 .
[5] LEI Jin-bo，CHEN Cong-xin. Research on load transfer mechanism of composite foundation of rigid pile with cap based on hyperbolic model[J]. , 2010, 31(11): 3385 -3391 .
[6] WANG Deng-ke，LIU Jian，YIN Guang-zhi，WEI Li-de. Research on influencing factors of permeability change for outburst-prone coal[J]. , 2010, 31(11): 3469 -3474 .
[7] HU Qi, LING Dao-sheng, CHEN Yun-min. Analytical method and engineering application of horizontal coefficients of subgrade reaction based on Melan’s solution[J]. , 2009, 30(1): 33 -39 .
[8] ZHANG Cheng-ping，ZHANG Ding-li，LUO Jian-jun，WANG Meng-shu，WU Jie-pu. Remote monitoring system applied to the construction of metro station undercrossing existing metro tunnel[J]. , 2009, 30(6): 1861 -1866 .
[9] WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke. Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration[J]. , 2009, 30(7): 2158 -2162 .
[10] ZHANG Xue-chan , GONG Xiao-nan , YIN Xu-yuan , ZHAO Yu-bo. Monitoring analysis of retaining structures for Jiangnan foundation pit of Qingchun road river-crossing tunnel in Hangzhou[J]. , 2011, 32(S1): 488 -0494 .
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