考虑井阻随时间变化下砂井地基的非线性固结解

doi:10.13722/j.cnki.jrme.2020.0199

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (381 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Aiming at that the permeability coefficient of sand drains will gradually decrease in the consolidation process of sand-drained ground，e-lgand e-lglogarithmic models are introduced to describe the nonlinear consolidation characteristics of soils in this paper，and considering the time-dependent well resistance and the variation of the radial permeability coefficient in the smear zone，a governing equation for nonlinear consolidation of sand-drained ground is derived and the corresponding analytical solution is obtained by using the separation variable method. The correctness of the solution is verified by the degradation study and the comparative analysis with the existing analytical solution. Based on the analytical solution，the nonlinear consolidation behaviors of sand-drained ground are investigated. The results show that the consolidation rate of sand-drained ground decreases with increasing the well resistance factor，and the time-dependent well resistance mainly affects the consolidation rate in the later stage. Among the three change modes of the radial permeability coefficient in the smear zone，the parabolic mode has the fastest consolidation rate，followed by the linear mode and then the constant mode. The higher the ratio of the compression index to the permeability index，the slower the consolidation rate of sand-drained ground. Under the nonlinear compression relationship，the average consolidation degree defined by the pore pressure is always slower than the average consolidation degree defined by the settlement in the consolidation process of sand-drained ground.

Key words： soil mechanics well resistance sand-drained ground nonlinear consolidation radial permeability coefficient analytical solution

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	JIANG Wenhao1
	2
	ZHAN Liangtong1
	2

Cite this article:

JIANG Wenhao1,2,ZHAN Liangtong1, et al. Analytical solution for nonlinear consolidation of sand-drained ground considering time-dependent well resistance[J]. , 2021, 40(1): 187-195.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0199 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I1/187

[1]	BARRON R A. Consolidation of fine-grained soils by drain wells[J]. Transaction of ASCE，1948，113(1)：718-742.
[2]	HART E G，KONDNER R L，BOYER W C. Analysis for partially penetrating sand drains[J]. Journal of Soil Mechanics and Foundation Division，ASCE，1958，84(SM4)：1 812-1 815.
[3]	YOSHIKUNI H，NAKANODO H. Consolidation of soils by vertical drain wells with finite permeability[J]. Soils and Foundations，1974，14(2)：35-46.
[4]	HANSBO S，JAMIOLKOWSKI M，KOK L. Consolidation by vertical drains[J]. Geotechnique，1981，31(1)：45-66.
[5]	谢康和，曾国熙. 等应变条件下的砂井地基固结解析理论[J]. 岩土工程学报，1989，11(2)：3-17.(XIE Kanghe，ZENG Guoxi. Consolidation theories for drain wells under equal strain condition[J]. Chinese Journal of Geotechnical Engineering，1989，11(2)：3-17.(in Chinese))
[6]	TANG X W，ONITSUKA K. Consolidation of double-layered ground with vertical drains[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2001，25(14)：1 449-1 465.
[7]	WALKER R，INDRARATNA B. Vertical drain consolidation with parabolic distribution of permeability in smear zone[J]. Journal of Geotechnical Engineering，2006，132(7)：937-941.
[8]	郭彪，韩颖，龚晓南，等. 随时间任意变化荷载下砂井地基固结分析[J]. 中南大学学报：自然科学版，2012，43(6)：2 369-2 377. (GUO Biao，HAN Ying，GONG Xiaonan，et al. Consolidation analysis with vertical drains and general time-dependent loading[J]. Journal of Central South University：Science and Technology，2012，43(6)： 2 369-2 377.(in Chinese))
[9]	张玉国，万东阳，郑言林，等. 考虑径向渗透系数变化的真空预压竖井地基固结解析解[J]. 岩土力学，2019，40(9)：3 533-3 541. (ZHANG Yuguo，WAN Dongyang，ZHENG Yanlin，et al. Analytical solution for consolidation of vertical drain under vacuum preloading considering the variation of radial permeability coefficient [J]. Rock and Soil Mechanics，2019，40(9)：3 533-3 541.(in Chinese))
[10]	LEKHA K R，KRISHNASWAMY N R，BASAK P. Consolidation of clay by sand drain under time-dependent loading[J]. Journal of Geotechnical and Geoenvironmental Engineering，1998，124(1)：91-94.
[11]	INDRARATNA B，RUJIKIATKAMJORN C，SATHANANTHAN L. Radial consolidation of clay using compressibility indices and varying horizontal permeability[J]. Canadian Geotechnical Journal，2005，42(5)：1 330-1 341.
[12]	韩文君，刘松玉，章定文，等. 基于双对数压缩模型的真空预压非线性固结解[J]. 东南大学学报：自然科学版，2013，43(5)：967-972.(HAN Wenjun，LIU Songyu，ZHANG Dingwen，et al. Nonlinear consolidation of subsoil by vacuum preloading based on bi-logarithmic coordinate compression model[J]. Journal of Southeast University：Natural Science，2013，43(5)：967-972.(in Chinese))
[13]	LU M，WANG S，SLOAN S W，et al. Nonlinear radial consolidation of vertical drains under a general time-variable loading[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2015，39(1)：51-62.
[14]	郭霄，谢康和，卢萌盟，等. 直排式真空预压法下竖井地基的非线性固结解析解[J]. 中南大学学报：自然科学版，2018，49(2)：384-392.(GUO Xiao，XIE Kanghe，LU Mengmeng，et al. Nonlinear analytical solution for consolidation of vertical drains by straight-line vacuum preloading method[J]. Journal of Central South University：Science and Technology，2018，49(2)：384-392.(in Chinese))
[15]	BO M W. Discharge capacity of prefabricated vertical drain and their field measurements[J]. Geotextiles and Geomembranes，2004，22(1)：37-48.
[16]	KIM R，HONG S J，LEE M J，et al. Time dependent well resistance factor of PVD[J]. Marine Georesources and Geotechnology，2011，29(2)：131-144.
[17]	DENY Y B，LIU G B，LU M M，et al. Consolidation behavior of soft deposits considering the variation of prefabricated vertical drain discharge capacity[J]. Computers and Geotechnics，2014，30(8)：310-316.
[18]	DENY Y B，XIE K H，LU M M，et al. Consolidation by prefabricated vertical drains considering the time dependent well resistance[J]. Geotextiles and Geomembranes，2013，36：20-26.
[19]	NGUYEN B P，KIM Y T. Radial consolidation of PVD-Installed normally consolidated soil with discharge capacity reduction using large-strain theory[J]. Geotextiles and Geomembranes，2019，47(2)：243-254.
[20]	郭彪，龚晓南，卢萌盟，等. 考虑涂抹作用的未打穿砂井地基固结理论分析[J]. 岩石力学与工程学报，2009，28(12)：2 561-2 568. (GUO Biao，GONG Xiaonan，LU Mengmeng，et al. Theoretical analysis on partially penetrated and drains foundation with consideration on smear effect[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(12)：2 561-2 568. (in Chinese))
[21]	LU M，WANG S，SLOAN S W，et al. Nonlinear consolidation of vertical drains with coupled radial-vertical flow considering well resistance[J]. Geotextiles and Geomembranes，2015，43(2)：182-189.
[22]	MADHAV M R，PARK Y M，MIURA N. Modelling and study of smear zones around band shaped drains[J]. Soils and Foundations，1993，33(4)：135-147.
[23]	BASU D，BASU P，PREZZI M. Analytical solutions for consolidation aided by vertical drains[J]. Geomechanics and Geoengineering：an International Journal，2006，1(1)：63-71.
[24]	INDRARATNA B，PERERA D，RUJIKIATKAMJORN C，et al. Soil disturbance analysis due to vertical drain installation[J]. Proceedings of the Institution of Civil Engineers Geotechnical Engineering，2014，168(3)：236-246.
[25]	NGUYEN B P，KIM Y T. An analytical solution for consolidation of PVD-installed deposit considering nonlinear distribution of hydraulic conductivity and compressibility[J]. Engineering Computations，2019，36(2)：707-730.
[26]	BERRY P L，WILKINSON W B. The radial consolidation of clay soils[J]. Geotechnique，1969，19(2)：253-284.