Finite element modelling of vertical drains beneath embankments on soft ground

Finite element modelling of vertical drains beneath embankments on soft ground
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DOI:
10.1680/geot.1992.42.3.499
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发表时间:
1992-09
期刊:
影响因子:
5.8
通讯作者:
C. Hird;I. Pyrah;D. Russell
C. Hird;I. Pyrah;D. Russell
中科院分区:
工程技术1区
文献类型:
--
作者:
C. Hird;I. Pyrah;D. Russell

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本文介绍了一种在软土地基固结平面应变有限元分析中建立垂直排水沟模型的方法。这包括使用适当配制的排水元件来代表每个排水口。在轴对称和平面应变分析中,根据一个广泛接受的理论,发展了一个单一的排水效果的匹配准则。可通过调整土壤的几何形状(排水间距)和/或渗透性来实现匹配。有限元分析和匹配过程进行了验证,通过与理论结果的比较,有限漏渗透率(井阻)和涂抹的影响,令人满意的模拟。一种方法是不可取的;急性;本文通过对土壤表面残余变形平面的单元分析,模拟垂直排水系统。Ceci包括充分利用表面排水公式中的一个元素,以代表chaque排水。Des criteres pour representer l'effet d'un drain unique dans les analyses axisy.
A methodology is described for modelling vertical drains in plane strain finite element analyses of embankments on soft ground. This includes the use of a suitably formulated drainage element to represent each drain. Criteria for matching the effect of a single drain in axisymmetric and plane strain analyses are developed on the basis of a widely accepted theory. Matching can be achieved by adjusting the geometry (drain spacing) and/or the permeability of the soil. The finite element analysis and matching procedure are validated by comparison with theoretical results; the effects of both finite drain permeability (well resistance) and smear are modelled satisfactorily. Une methode est deacute;acute;crite pour simuler des drains verticaux dans une analyse aux elements finis a deformations planes de remblais sur sols mous. Ceci inclut l'utilisation d'un element de drainage formule de facon adequate pour representer chaque drain. Des criteres pour representer l'effet d'un drain unique dans les analyses axisy...