摘要:

AbstractA rheological model has been developed for simulating the secondary consolidation of soils. Numerical procedures have been incorporated into a coupled consolidation program using results from a representative oedometer test. A solution of a two‐dimensional problem has also been performed. The technique is numerically stable and has provided satisfactory predictions for the consolidation settlements and the dissipation of pore water pressure within soil

ISSN:0363-9061    

DOI:10.1002/nag.1610130103

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

摘要:

AbstractA spherical cavity expansion model has been used to study the bearing capacity of foundations on calcareous and silica sands. Two constitutive models have been used to represent each sand: an elastoplastic, collapse‐softening model, and a computationally simpler, elastic/perfectly plastic material. The predictions of the limit pressures for spherical cavity expansion are compared with laboratory data on the bearing capacities obtained from model footing tests. It is shown that the numerical predictions of the limit pressures correlate well with the experimental values of bearing capacity, particularly at higher effective overburden pressure

ISSN:0363-9061    

DOI:10.1002/nag.1610130104

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

摘要:

AbstractSemi‐analytic solutions are developed for the migration of pollutants from cylindrical and spherical repositories buried deep in a homogeneous and isotropic soil in the presence of a uniform and unidirectional advection. The techniques adopted involves taking the Laplace transform of the governing equations, finding an analytic solution in transform space and then numerically inverting the transform to obtain the concentrations of the contaminants at selected positions and times. Numerical results are presented, and practical implications discusse

ISSN:0363-9061    

DOI:10.1002/nag.1610130105

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

摘要:

AbstractNumerical examples are given which illustrate the poor performance of conventional finite elements in problems involving strain localization in frictional materials. In one of the cases investigated, that of granular media subjected to plane strain biaxial loading, isoparametric elements are seen to inhibit localization altogether. With these examples by way of motivation, the performance of a recently proposed finite element method in the context of strain localization in frictional materials is assessed, with particular emphasis on three‐dimensional problems. In passing, some issues pertaining to the post‐bifurcation response of biaxial specimens are examined. In particular, the numerical simulations suggest that the observed softening is a geometrical effect not attributable to constitutive behavi

ISSN:0363-9061    

DOI:10.1002/nag.1610130106

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

摘要:

AbstractA solution is derived for the heat flow and consolidation which occur when a heat source is buried deep in a porous thermoelastic soil having anisotropic flow properties. This solution is used to examine the pore pressure generation and dissipation near both point and cylindrical heat sources. An increase in temperature will tend to generate an increase in excess pore pressure. However, the pore water will tend to flow from regions of high excess pore pressure to regions of low excess pore pressure, and so consolidation will occur, and temperature‐generated excess pore pressures will tend to dissipate. Many natural soils exhibit horizontal layering and so have a higher horizontal than vertical permeability. It is shown that in soils the excess pore pressure generated by a heat source is significantly less than that in an isotropic soil having an equal vertical permeabilit

ISSN:0363-9061    

DOI:10.1002/nag.1610130107

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610130108

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610130109

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610130110

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610130111

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610130112

出版商:John Wiley&Sons, Ltd    

年代:1989

数据来源: WILEY