A framework for analysis of diffuse instability in partially saturated granular soils

被引:0
|
作者
Borja, Ronaldo I. [1 ]
机构
[1] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA
来源
Theoretical and Numerical Unsaturated Soil Mechanics | 2007年 / 113卷
关键词
bifurcation; deformation bands; diffuse instability; partially saturated; soils; porous media;
D O I
暂无
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Strain localization in the form of a deformation band is the most extensively investigated instability mode in geomaterials. Deformation is localized to a narrow band that could shear as well as either dilate or compact. The jump in the strain rate across the band is given by a tensor of determinant rank one. However, loose soils can also implode when subjected to compressive stresses. In this case the mechanism of deformation is diffuse in the sense that the jump in the strain rate tensor has a full rank. Only very recently has this mode been studied extensively in the context of material instability (Borja 2006a). In this paper we move one step further and consider the effect of volume constraint associated with the presence of fluids, specifically water and air, on loose soils that have a tendency to implode. The upshot is that, depending on the degree of saturation of these soils, the fluids may inhibit the solid from imploding freely resulting in a rise in the pore fluid pressures. The eigenmode at bifurcation is represented by the composite jumps in the strain rate tenser and the rates of pore air and pore water pressures. The framework of stability analysis presented in this work can be used to develop a criterion for the onset of liquefaction instability in fully saturated soils.
引用
收藏
页码:19 / 28
页数:10
相关论文
共 50 条
  • [41] Paper Instability mechanisms in partially saturated coarse-grained soils: Implications for rainfall-induced flowslides
    Rotisciani, G. M.
    Novelli, F.
    Desideri, A.
    Amorosi, A.
    COMPUTERS AND GEOTECHNICS, 2024, 176
  • [42] Rolling table centrifuge modelling of partially saturated granular material to inform on instability during solid bulk cargo transport
    Kwa, Katherine
    Gourvenec, Susan
    Evans, Tim
    Koseki, Junichi
    Kishimoto, Kenichi
    ACTA GEOTECHNICA, 2024, 19 (11) : 7677 - 7697
  • [43] Liquefaction resistance of partially saturated soils from CPTs
    Fioravante, V
    Giretti, D.
    Jamiolkowski, M.
    EARTHQUAKE GEOTECHNICAL ENGINEERING FOR PROTECTION AND DEVELOPMENT OF ENVIRONMENT AND CONSTRUCTIONS, 2019, 4 : 2404 - 2411
  • [44] A hyperbolic behaviour model for partially saturated fine soils
    Ahmadi, H.
    Kalantary, F.
    Arabani, A.
    PROCEEDINGS OF THE 9TH WSEAS INTERNATIONAL CONFERENCE ON MATHEMATICAL AND COMPUTATIONAL METHODS IN SCIENCE AND ENGINEERING (MACMESE '07)/ DNCOCO '07, 2007, : 14 - 20
  • [45] Procedure to Estimate the Seismic Settlement of Partially Saturated Soils
    Ghayoomi M.
    McCartney J.S.
    Indian Geotechnical Journal, 2016, 46 (3) : 272 - 275
  • [46] Thermal effects in partially saturated soils: a constitutive model
    Bolzon, G
    Schrefler, BA
    INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, 2005, 29 (09) : 861 - 877
  • [47] Centrifuge modeling of LNAPLs movement in partially saturated soils
    Shu, Shanzhi
    Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering, 2000, 22 (05): : 594 - 598
  • [48] Development of failure criterion for partially saturated cohesive soils
    Department of Civil Engineering, University of Guilan, Rasht, Iran
    Electron. J. Geotech. Eng., 2007,
  • [49] Drag Load on Piles in Partially Saturated Collapsible Soils
    Hanna, Adel
    Mashhour, Ibrahim
    PANAM UNSATURATED SOILS 2017: SWELL-SHRINK AND TROPICAL SOILS, 2018, (303): : 290 - 302
  • [50] DEM-LBM coupling for partially saturated granular assemblies
    Younes, N.
    Wautier, A.
    Wan, R.
    Millet, O.
    Nicot, F.
    Bouchard, R.
    COMPUTERS AND GEOTECHNICS, 2023, 162