LARGE-STRAIN CONSOLIDATION OF FOUNDATION WITH SAND DRAINS BASED ON HANSBO'S FLOW <sup>1)</sup>

SHI Gang; WANG Yuxiao; LI Yonghui; LIU Zhongyu

doi:10.6052/1000-0879-19-084

MECHANICS IN ENGINEERING > 2019 > 41(4): 405-415. > DOI: 10.6052/1000-0879-19-084 CSTR: 32047.14.1000-0879-19-084

SHI Gang, WANG Yuxiao, LI Yonghui, LIU Zhongyu. LARGE-STRAIN CONSOLIDATION OF FOUNDATION WITH SAND DRAINS BASED ON HANSBO'S FLOW ¹⁾[J]. MECHANICS IN ENGINEERING, 2019, 41(4): 405-415. DOI: 10.6052/1000-0879-19-084

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LARGE-STRAIN CONSOLIDATION OF FOUNDATION WITH SAND DRAINS BASED ON HANSBO'S FLOW ¹⁾

School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

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Published Date: August 19, 2019

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Abstract

Based on Gibson's theory for the large-strain consolidation, the governing equations for the void ratio and the excessive pore pressure for the large-strain consolidation of foundation with sand drains are derived by introducing the Hansbo's flow model with consideration of the sedimentary effect of the soil layer. By comparing with the existing research results, the reliability of the proposed method and the equivalence of the two description methods of the large deformation consolidation equation of the sand well foundation are verified. The numerical solutions of the equations are obtained by using the FlexPDE software, then the differences of the consolidation behaviors among the large-strain, the small-strain and the Barron's consolidation are investigated. And the effect of the parameters ( $m$ and $I_1$ ) of the Hansbo's flow model on the consolidation behaviors is analyzed in detail. Finally, the consolidation behaviors of the axisymmetric consolidation, the radial consolidation and the 1D vertical consolidation are compared. The results show that the large-strain consolidation rate with the Hansbo's flow is smaller than that of any other consolidation models, and the average degree of the consolidation of the consolidation models with the Hansbo's flow tends to be the same with a comparatively long time. And the consolidation rate decreases with the increase of the parameters $m$ and $I_1$ and of the Hansbo's flow. Moreover, the difference of the average degree of the consolidation between the axisymmetric consolidation and the radial consolidation increases with the increase of the influence radius of the sand drains, and during the early stage of the consolidation, the consolidation rate of the 1D vertical consolidation is larger than those of the axisymmetric consolidation and the radial consolidation.
- ground with sand drains,
- large-strain consolidation,
- Hansbo's flow,
- characteristics of consolidation

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References

[1]	Barron RA. Consolidation of fine-grained soils by drain wells.Transactions of the American Society of Civil Engineerings, 1948, 113: 718-742
[2]	Hansbo S, Jamiolkowski M, Kok L. Consolidation by vertical drains.Géotechnique, 1981, 31(1): 45-66
[3]	谢康和, 曾国熙. 等应变条件下的砂井地基固结解析理论.岩土工程学报, 1989, 11(2): 3-17
[4]	徐妍, 吴芳, 谢康和等. 初始孔压非均布竖向排水井地基固结方程的解析解. 水利学报, 2008, 39(7): 829-835
[5]	雷国辉, 蒋春霞, 施建勇. 任意附加应力下竖井径竖向耦合固等应变解. 岩土力学, 2006, 27(2): 173-178
[6]	蔡新, 谢康和, 徐妍等. 初始孔压非均布条件下涂抹区渗透系数变化的砂井地基固结解. 岩土工程学报, 2010, 32(1): 104-108
[7]	张福海, 陈雷, 郭帅杰等. 底部抽真空预压法砂井地基固结解析解. 岩土力学, 2014, 35(10): 2787-2793
[8]	Hart EG, Kondner RL, Boyer WC. Analysis for partially penetrating sand drains.Journal of Soil Mechanics and Foundation Division, ASCE, 1958, 84(4): 1-15
[9]	Tang XW, Onitsuka K. Consolidation of ground with partially penetrated vertical drains.Geotechnical Engineering Journal, 1998, 29(2): 209-231
[10]	刘加才, 施建勇, 赵维炳等. 变载荷作用下未打穿竖井地基固结分析. 岩石力学与工程学报, 2005, 24(6): 1041-1046
[11]	闫富有. 成层未打穿砂井地基固结Lagrange插值解法. 岩石力学与工程学报, 2007, 26(9): 1932-1939
[12]	Geng XY, Indraratna B, Rujikiatkamjorn C. Effectiveness of partially penetrating vertical drains under a combined surcharge and vacuum preloading.Canadian Geotechnical Journal, 2011, 48(6): 970-983
[13]	Hansbo S. Aspects of vertical drain design: Darcian or non-Darcian flow.Géotechnique, 1997, 47(5): 983-992
[14]	Teh CI, Nie XY. Coupled consolidation theory with non-Darcian flow.Computersand Geotechnics, 2002, 29(3): 169-209
[15]	邓岳保, 谢康和, 李传勋. 考虑非达西渗流的比奥固结有限元分析. 岩土工程学报, 2012, 34(11): 2058-2065
[16]	周琦, 张功新, 王友元等. 真空预压条件下的砂井地基Hansbo固结解. 岩石力学与工程学报, 2010, 29(S2): 3994-3998
[17]	刘忠玉, 焦阳. 基于Hansbo渗流的理想砂井地基固结分析. 岩土工程学报, 2015, 37(5): 792-801
[18]	江辉煌, 赵有明, 刘国楠等. 砂井地基的大变形固结. 岩土工程学报, 2011, 33(2): 302-308
[19]	张明, 赵有明, 刘国楠等. 双层砂井地基大变形固结方程差分解.岩土工程学报, 2013, 35(9): 1666-1674
[20]	孙立强, 贾天强, 闫澍旺. 基于大变形的未打穿砂井固结理论研究. 岩石力学与工程学报, 2017, 36(2): 504-512
[21]	Gibson RE, Eengland GL, Hussey MJL. The theory of one-dimensional consolidation of saturated clays: I finite non-linear consolidation of thin homogeneous layers.Géotechnique, 1967, 17(2): 261-273
[22]	Gibson RE, Schiffman RL, Cargill KW. The theory of one-dimensional consolidation of saturated clays: II finite non-linear consolidation of thick homogeneous layers.Canadian Geotechnical Journal, 1981, 18(2): 280-293
[23]	Davis EH，Raymand GP. A nonlinear theory of consolidation.Geotechnique, 1965, 15(2): 161-173
[24]	Xie KH, Leo CJ. Analytical solutions of one-dimensional large strain
[25]	李传勋, 谢康和. 考虑非达西渗流和变载荷影响的软土大变形固结分析. 岩土工程学报, 2015, 37(6): 1002-1009

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LARGE-STRAIN CONSOLIDATION OF FOUNDATION WITH SAND DRAINS BASED ON HANSBO'S FLOW ¹⁾