基于GDS固结渗透试验参数的竖井地基固结非线性有限元分析

doi:10.13722/j.cnki.jrme.2014.s2.100

Abstract
Figure/Table
References (13)
Related Citation (15)

Download: PDF (1133 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract A series of widely accepted non-linear constitutive models，which can be fully gained from the conjoined consolidation permeability test by GDS advanced consolidation testing system，are firstly introduced. These models contain the piecewise linear e-lgp model，the linear e-lgk model and Hansbos non-Darcy flow model，where e is the porosity，p is the loading pressure and k is the permeability. Then，the parameters acquisition process for these models is recommended with the presentation of conjoined consolidation permeability test for Ningbo soft soil by GDS. Next，the finite element equations considered these nonlinear models are deduced based on the classical Biots consolidation theory. The corresponding computing program is presented in detail. The reliability of the program and its theoretical basis is verified through the comparison with an existing numerical method. Lastly，example analysis for vertical drained ground with layered soft soil is carried out and the influences of the permeable boundary，non-Darcy flow，smear effect and loading size on consolidation are studied. It is found that the influence of the permeable boundary is obvious，while the influences of non-Darcy flow and smear effect are not obvious. The influence of loading size is more complicated，which will accelerate or slow down the consolidation rate.

Key words： soil mechanics vertical drained ground finite element analysis consolidation permeability test non-Darcian flow

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	DENG Yuebao1
	XIE Kanghe2
	LI Feifei2
	LIU Ganbin1

Cite this article:

DENG Yuebao1,XIE Kanghe2,LI Feifei2, et al. NONLINEAR FINITE ELEMENT ANALYSIS OF CONSOLIDATION FOR VERTICAL DRAINED GROUND WITH PARAMETERS DETERMINED FROM GDS CONSOLIDATION PERMEABILITY TESTS[J]. , 2014, 33(S2): 4203-4210.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.100 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/4203

[1]	谢康和，庄迎春，李西斌. 萧山饱和软粘土的渗透性试验研究[J]. 岩土工程学报，2005，27(5)：591-594.(XIE Kanghe，ZHUANG Yingchun，LI Xibin. Laboratory investigation of permeability characteristics of Xiaoshan clay[J]. Chinese Journal of Geotechnical Engineering，2005，27(5)：591-594.(in Chinese))
[2]	齐添. 软土一维非线性固结理论与试验对比研究[博士学位论文][D]. 杭州：浙江大学，2008.(QI Tian. Theoretical and experimental studies on one-dimensional nonlinear consolidation of soft soil[Ph. D.thesis][D].Hangzhou：Zhejiang University，2008.(in Chinese))
[3]	张明，蒋敏敏，赵有明. 基于GDS固结仪的吹填淤泥非线性渗透性及参数测定[J]. 岩石力学与工程学报，2013，32(3)：625-632.(ZHANG Ming，JIANG Minmin，ZHAO Youming.Nonlinear permeability and parameter determination for dredged fill based on GDS consolidation apparatus[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(3)：625-632.(in Chinese))
[4]	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 consolidation[J].Chinese Journal of Geotechnical Engineering，1989，11(2)：3-17.(in Chinese))
[5]	CHAI JC，CARTER JP.Deformation analysis in soft ground improvement[M]. 1st ed. [S. l.]：Springer，2011：1-247.
[6]	殷宗泽. 土工原理[M]. 北京：中国水利水电出版社，2007：35-38.(YIN Zongze.Geotechnical principle[M]. Beijing：China WaterPower Press，2007：35-38.(in Chinese))
[7]	HANSBO S. Consolidation equation valid for both Darcian and non-Darcianflow[J]. Geotechnique，2001，51(1)：51-54.
[8]	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[J].岩土工程学报，2012，34(11)：2 058-2 065.(DENG Yuebao，XIE Kanghe，LI Chuanxun. Finite element analysis of Biot¢s consolidation with non-Darcian flow[J].Chinese Journal of Geotechnical Engineering，2012，34(11)：2 058-2 065.(in Chinese))
[9]	李传勋. 基于非线性渗流定律的软土一维固结理论研究[博士学位论文][D]. 杭州：浙江大学，2012.(LI Chuanxun. Studies on one-dimensional consolidation theory for soft soils with nonlinear flow law[Ph. D.Thesis][D]. Hangzhou：Zhejiang University，2012.(in Chinese))
[10]	齐添，谢康和，胡安峰，等. 萧山黏土非达西渗流性状的试验研究[J]. 浙江大学学报：工学版，2007，41(6)：1 023-1 026.(QI Tian，XIE Kanghe，HU Anfeng，et al.Laboratorial study on non-Darcy seepage in Xiaoshan clay[J]. Journal of Zhejiang University：Engineering Science，2007，41(6)：1 023-1 026.(in Chinese))
[11]	谢康和，周健. 岩土工程有限元分析理论与应用[M]. 北京：科学出版社，2002：70-89.(XIE Kanghe，ZHOU Jian. Theory and application of the finite element method in geotechnical engineering[M].Beijing：Science Press，2002：70-89.(in Chinese))
[12]	徐洋. 复合地基固结与变形的计算理论及数值分析[博士学位论文][D]. 杭州：浙江大学，2004.(XU Yang. Computational theory and numerical analysis for consolidation deformation of composite foundation[Ph. D.Thesis][D]. Hangzhou：Zhejiang University，2004.(in Chinese))
[13]	郑辉. 软粘土地基大应变非线性流变固结理论研究[博士学位论文][D]. 杭州：浙江大学，2004.(ZHENG Hui. On the theory of large-strain and non-linear rheological consolidation of soft clayey soils[Ph. D.Thesis][D]. Hangzhou：Zhejiang University，2004.(in Chinese))