摘要:

AbstractZero‐thickness interface elements are applied to solve plasticity problems involving singular points where stresses and displacements are non‐unique. Singular points occur in soil–structure interaction, e.g. at the ridges of footings, buried structures and foundation piles. Here the introduction of potential displacement discontinuities appears to give quite accurate finite element solutions. This is demonstrated for indentation problems both for plane strain and axisymmetric situations. In all problems the soil behaviour is modelled by the elastic–plastic Mohr–Coul

ISSN:0363-9061    

DOI:10.1002/nag.1610150502

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractIf the slope of the uniaxial stress–strain diagram in the post‐failure regime is steep enough, it is shown, using a simplified (‘elementary’) theory, that the frontal zone of a coal seam close to a cavity may suddenly collapse. This collapse, well known fromin situ, evidence, is also shown to reduce in most cases the danger of initiation or the strength of a subsequent coal mi

ISSN:0363-9061    

DOI:10.1002/nag.1610150503

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractConstitutive equations for the mechanical and hydraulic behaviour of saturated porous rock with joint sets of specified orientations are developed by superposing continuum representations for the mechanical and hydraulic properties of the intact rock and each of the joint sets. The resulting continuum theory allows for fluid diffusion through and between interconnected rock pores and joint sets of specified orientation, and also accounts for the anisotropy of the mechanical properties due to joint stiffnesses. The accuracy and reliability of this model are verified by finite element simulation of example problems. The first example considers joint orientation‐dependent rock deformation in a hypothetical porous medium with one joint set of different dip angles. More realistic examples related to rock slope stability and reservoir‐induced seismicity are also considered in which the constitutive law's utility for modelling time‐dependent fluid pressures is illust

ISSN:0363-9061    

DOI:10.1002/nag.1610150504

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractBy using the Mellin transform, a general solution is obtained for the total stresses and pore pressure distribution in an infinite wedge under fairly general conditions of loading. The results for the particular case in which each surface is subjected to static sinusoidal pressures are given in an explicit form. The infinite integrals can be evaluated by numerical integration methods. This analytical method is verified by different cases. The results of this study could be used to determine the total stresses and pore pressures induced by a wave on a sloping seabed.

ISSN:0363-9061    

DOI:10.1002/nag.1610150505

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610150506

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610150501

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY