|本期目录/Table of Contents|

[1]梁燕,赵桂娟,谢永利,等.黄土增湿变形的数值模型[J].建筑科学与工程学报,2007,24(03):43-46.
　LIANG Yan,ZHAO Gui-juan,XIE Yong-li,et al.Numerical Model of Loess Moistening Deformation[J].Journal of Architecture and Civil Engineering,2007,24(03):43-46.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年03期
页码:
43-46
栏目:
出版日期:
2007-09-20

文章信息/Info

Title:
Numerical Model of Loess Moistening Deformation
作者:
梁燕1,赵桂娟2,谢永利1,李同录3
1. 长安大学 特殊地区公路工程教育部重点实验室,陕西 西安 710064; 2. 西安科技大学 建筑与土木 工程学院,陕西 西安 710054; 3. 长安大学 地质工程与测绘学院,陕西 西安 710054
Author(s):
LIANG Yan1, ZHAO Gui-juan2, XIE Yong-li1, LI Tong-lu3
1. Key Laboratory of Highway Engineering in Special Region of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Civil Engineering and Architecture, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China; 3. School of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China
关键词:
湿陷性黄土;  渗流;  增湿变形;  渗流与变形耦合;  有限元模型
Keywords:
collapsible loess;  permeation;  moistening deformation;  coupling of permeation and deformation;  finite element model
分类号:
TU444
DOI:
-
文献标志码:
A
摘要:
以甘肃陇西自重湿陷性黄土作为研究对象,基于黄土湿陷过程中变形与渗流耦合的思想,建立了黄土增湿变形的数值模型。依据质量守恒定律和达西定律,建立了考虑变形影响的适合非饱和土-饱和土的、非稳态的轴对称黄土渗流连续性基本方程。参考陇西自重湿陷性黄土室内侧限压缩试验数据建立了黄土增湿变形本构模型; 采用Galerkin加权残值法对基本方程进行空间离散; 在时间域内用差分方法离散,建立了考虑渗流和变形耦合的黄土增湿变形有限元支配方程,并提出了求解方法。研究结果表明:在研究黄土增湿变形过程中,考虑变形与渗流耦合的作用是可行的,建立的黄土增湿变形有限元模型是合理的。
Abstract:
Taking collapsible loess from Longxi region of Gansu Province as research object, the numerical model of loess moistening deformation was established, which considered the coupling of permeation and deformation. According to the conservation of mass and Darcy's law, the axis-symmetry permeation continuity equation was established, which fitted unsaturated soils and saturated soils, and the influence of deformation was considered. Constitutive model of loess collapse was established on the basis of the indoor consolidation tests. Because the permeation continuity equation and the basic equation of loess moistening deformation were all nonlinear, the numerical analysis method was adopted in solving equations. Space was parted by Galerkin method. Time field was parted by difference method. The finte element model(FEM)for the collapsible deformation of loess was gotten, and the solution of the FEM equation was presented. Results demonstrate that it is recommendable to consider the coupling of permeation and deformation in the research of loess moistening deformation, and the FEM model of loess moistening deformation is reasonable.

参考文献/References:

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[5]梁 燕,谢永利,刘保健,等.非饱和黄土渗透性的试验研究[J].水文地质工程地质,2006,33(2):27-30. LIANG Yan,XIE Yong-li,LIU Bao-jian,et al.The Test Study on the Permeability of Unsaturated Typical Loess[J].Hydrogeology & Engineering Geology,2006,33(2):27-30.
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备注/Memo

备注/Memo:
收稿日期:2007-05-19
基金项目:国家自然科学基金项目(59870401); 国家西部交通建设科技项目(2001 318 812 14)
作者简介:梁 燕(1968-),女,山西孝义人,讲师,工学博士,E-mail:yanlmnop@yahoo.com.cn。
更新日期/Last Update: 2007-09-20