Unified Sand Model Based on the Critical State and Generalized Plasticity

Ling, Hoe I.; Yang, Songtao

doi:10.1061/(asce)0733-9399(2006)132:12(1380)

Cited by 136 publications

(70 citation statements)

References 30 publications

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“…In the proposed model, the expression for plastic modulus (H) proposed by Li and Dafalias (2000) and modified by Ling and Yang (2006) was used, and the dependency of H on void ratio and confining pressure level was accounted by the state parameter ( * ψ ):…”

Section: Plastic Modulusmentioning

confidence: 99%

“…Consequently, a set of simple empirical expressions is defined to capture the overall triaxial drained behaviour of different waste materials under the 4 CS framework. More importantly, a model based on generalised plasticity and critical state concept, having a similar structure of those presented by Ling and Yang (2006) and Manzanal et al (2011), is proposed. The main features of the proposed model are: (i) a critical state surface (CSS) is introduced to account for coupled dependency of stress-strain to density and pressure level for blended CW and BOS mixes; (ii) the concept of state parameter ( * ψ ) is used to identify the position of current density state from the CSS in the p'-e plot; (iii) the stress-dilatancy, plastic potential and hardening rules are related to * ψ and CSS; and (iv) the stress-strain-dilatancy behaviour of various blended wastes consolidated at different void ratio and confining pressure levels (Table 1) can be described using an explicit set of 11 soil parameters.…”

Section: Introductionmentioning

confidence: 99%

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Predicting the behaviour of coal wash and steel slag mixtures under triaxial conditions

2015

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The effective reuse and recycling of granular waste materials, namely coal wash (CW) and Basic Oxygen Steel slag (BOS), is economically beneficial and environmentally sustainable. Nevertheless, due to the heterogeneity of these granular waste materials, their ultimate adoption as structural fills must be supported by constitutive relationships capable of accurately describing the stress-strain behaviour under representative field loading conditions. In this paper, a critical-state-surface generalised-plasticity model is presented and its predictive capability using a single set of soil parameters is demonstrated for drained triaxial compression tests. Disciplines Engineering | Science and Technology Studies Publication DetailsChiaro, G., Indraratna, B. & Tasalloti, S. Ali. (2015). Predicting the behaviour of coal wash and steel slag mixtures under triaxial conditions. Canadian Geotechnical Journal, 52 (3) and Basic Oxygen Steel slag (BOS), is economically beneficial and environmentally sustainable.Nevertheless, due to the heterogeneity of these granular waste materials, their ultimate adoption as structural fills must be supported by constitutive relationships capable of accurately describing the stress-strain behaviour under representative field loading conditions. In this paper, a critical-statesurface generalised-plasticity model is presented and its predictive capability using an explicit set of soil parameters is demonstrated for drained triaxial compression tests.

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Section: Plastic Modulusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Predicting the behaviour of coal wash and steel slag mixtures under triaxial conditions

2015

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“…Additional comparisons with monitored cases involving failure should be performed. To increase accuracy in these analyses, the behavior of cohesionless soils found at the sites should be characterized using more advanced constitutive models, such as Ling and Yang [16], instead of the more simplistic Mohr-Coulomb model used herein. This is, of course, predicated on the availability of suitable experimental data from which to calibrate such models.…”

Section: Discussionmentioning

confidence: 99%

Finite Element Simulation of Deep Excavation Failures

Hung

Ling

Kaliakin

2014

Transp. Infrastruct. Geotech.

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Deep excavations play an increasingly greater role in the development of urban transportation infrastructure facilities such as subway systems and underground space. This paper presents the results of finite element simulations of two deep excavations in soft cohesive soils involving collapse. An enhanced bounding surface soil model characterizes the cohesive soils. The model is anisotropic and is formulated with a non-associative flow rule, but can be degenerated to an isotropic model with associative flow. The results of the excavation simulations give insight into the ground response in terms of lateral wall deflections, ground surface settlements, wall bending moments, and strut force developments. Anisotropic and isotropic versions of model showed differences in simulated results. The insignificant difference in results between the associative and non-associative versions of enhanced bounding surface model is illustrated, but it is expected that, in general, the use of non-associative flow rule will provide a more realistic simulation.

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“…A number of formulations have been reported in literature to express the shear modulus as a function of void ratio and confining pressure [2,9,10,14]. In here, for the case of undrained torsional shear loadings, the following formulation is proposed for G 0 :…”

Section: Modeling Of Stress-strain Behavior Of Sandmentioning

confidence: 99%

“…Alternatively, one of advantages of critical-state constitutive models [8,9] is their ability to predict soil behavior over a range of densities and confining pressures by using a single set of soil parameters. [10] proposed a unified model based on critical state and generalized plasticity. Nevertheless, there may be debates over the uniqueness of critical state line.…”

Section: Introcuctionmentioning

confidence: 99%