摘要:

AbstractThe unified three‐dimensional (3D) critical state bounding‐surface plasticity modelgUTS enables clays, silts and sands to be treated within a single framework. Furthermore, loose and dense states of a particular soil subjected to a wide range of confinements are viewed as a single material defined by the same set of constants. The model is able to handle both monotonic and complex cyclic paths including those involving a rotation of the principal stress directions. The model incorporates the following features: combined use of radial and deviatoric mapping rules and the use of an apparent normal consolidation line for sands; use of a non‐associated flow rule where the ratio of the rates of volumetric plastic strain to deviatoric plastic strain is a function only of the ratio of deviatoric to mean effective stresses and the Lode angle; adoption of a bi‐linear critical state line projected onto the plane of the void ratio versus logarithm of mean effective stress; inclusion of a sub‐elliptic, or super‐elliptic, segment in the plastic dilatancy surface for stress ratios less than critical; use of elliptic segments in the deviatoric planes; movement of the projection centre in the deviatoric mapping region and incorporation of a plastic stiffening effect for cyclic paths which repeatedly load in the same deviatori

ISSN:0363-9061    

DOI:10.1002/nag.1610181102

出版商:John Wiley&Sons, Ltd    

年代:1994

数据来源: WILEY

摘要:

AbstractA systematic calibration procedure for the constitutive modelgUTS using conventional triaxial data for all but one of the material constants is described. Typical ranges for the constants for clay and sand are specified together with default values. When all default values are adopted, just eight material constants need to be determined (gUTS‐lite). A comprehensive series of 49 simulations on clays, silt and sands in loose and dense states under a wide range of monotonic and cyclic stress paths, initial states and drainage conditions provide very satisfactory agreement with experimental result

ISSN:0363-9061    

DOI:10.1002/nag.1610181103

出版商:John Wiley&Sons, Ltd    

年代:1994

数据来源: WILEY

摘要:

AbstractAn analytical solution for the wave‐induced soil response is developed for a seabed of finite thickness subject to a three‐dimensional (3‐D) wave system produced by two intersecting waves of equal properties. These 3‐D exact solutions for the pore pressure and effective stresses, proposed for a non‐cohesive soil matrix of finite depth in a homogeneously unsaturated and anisotropic condition, are readily reducible to the limiting two‐dimensional cases of progressive and standing waves, for which no explicit solutions are available for finite thickness. The effects of soil isotropy, degree of saturation, seabed thickness and grain size on the wave‐induced pore pressure are discussed in detail. The explicit solutions presented in this study for the wave‐induced pore pressure and effective stresses should benefit the laboratory experiments and field monitoring programs carried out in soil

ISSN:0363-9061    

DOI:10.1002/nag.1610181104

出版商:John Wiley&Sons, Ltd    

年代:1994

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610181105

出版商:John Wiley&Sons, Ltd    

年代:1994

数据来源: WILEY

ISSN:0363-9061    

DOI:10.1002/nag.1610181101

出版商:John Wiley&Sons, Ltd    

年代:1994

数据来源: WILEY