An assessment of time integration schemes for dynamic geotechnical problems

Kontoe, Stavroula; Zdravković, Lidija; Potts, David M.

doi:10.1016/j.compgeo.2007.05.001

Cited by 65 publications

(45 citation statements)

References 10 publications

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“…8 s after the onset of the excitation. The time integration was performed with the generalised-AE method (Chung & Hulbert, 1993;Kontoe et al, 2008b) with a time step,˜t ¼ 0 . 01 s. The time step value was selected based on a preliminary parametric study, which showed that t ¼ 0 .…”

Section: Analysis Arrangementmentioning

confidence: 99%

On the relative merits of simple and advanced constitutive models in dynamic analysis of tunnels

Kontoe¹,

Zdravković²,

Potts³

et al. 2011

Géotechnique

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This paper compares simple constitutive models that are widely used in engineering practice with more sophisticated methods in the context of a case study. In particular, four constitutive modelling approaches have been considered: a simple elasto-plastic constitutive model (modified Cam-clay), with and without Rayleigh damping; the same model coupled with a cyclic non-linear model that can simulate pre-yield hysteresis; and finally an advanced kinematic hardening model, which is an improved version of the Al-Tabbaa & Wood two-surface model. These four approaches are used to analyse the seismic response of a section of the Bolu tunnels during the 1999 Duzce earthquake. To shed light on the performance of the constitutive models, simple site response finite-element analyses were first undertaken for the studied site, paying particular attention to the calibration of the Rayleigh damping parameters. The results of these analyses, in terms of maximum shear strain, were then used as input to an analytical elastic method (extended Hoeg method) for calculating the thrust and bending moment acting in the tunnel lining. Finally the results of dynamic time domain plane-strain analyses, employing the four adopted constitutive modelling approaches, are compared against field observations and results obtained by the extended Hoeg method, to investigate the ability of the models, of ranging complexity, to mimic soil response under seismic excitation. On effectue enfin une comparaison des résultats des analyses dans le domaine temporel de la déformation sur un plan, faisant usage des quatre méthodes de modélisation constitutives adoptées, avec les résultats obtenus à l'aide de la méth-ode étendue de Hoeg, pour examiner la capacité pour des modèles de complexité variable de simuler la réaction des sols à une excitation sismique. INTRODUCTIONUnderstanding the behaviour of geotechnical structures such as tunnels, earthfill dams and retaining walls during earthquakes is recognised as a necessary condition for their rigorous and safe seismic design. In order to predict the seismic response of these structures correctly, it is essential to develop and use constitutive models that can simulate soil behaviour appropriately under dynamic loading. Numerical analysis has developed significantly over the last decades, and nowadays a wide range of constitutive models is available. Equivalent linear models and simple non-linear models are used with acceptable accuracy for situations involving small to medium strains, whereas for higher strain levels coupling of a non-linear model with an elasto-plastic model, or the use of more advanced models, is needed. However, not all of the above-mentioned types of models are available in commercial codes. Therefore in engineering practice very simple elasto-plastic models (e.g. Mohr-Coulomb and/or

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Section: Analysis Arrangementmentioning

confidence: 99%

On the relative merits of simple and advanced constitutive models in dynamic analysis of tunnels

Kontoe¹,

Zdravković²,

Potts³

et al. 2011

Géotechnique

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“…All the analyses carried out are two-dimensional plane-strain dynamic in the timedomain using the FE software ICFEP (Imperial College Finite Element Program) [33]. The time-integration scheme employed is the generalised α-method of Chung & Hulbert [10] which is able to use numerical damping to selectively filter high frequencies (spectral radius at infinity, ρ ∞ = 9/11, see Kontoe et al [23].…”

Section: Problem Definitionmentioning

confidence: 99%

Steady-State and Transient Dynamic Visco-Elastic Response of Concrete and Earth Dams Due to Dam-Reservoir Interaction

Pelecanos¹,

Kontoe

Zdravković

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…proposed by Chung & Hulbert (1993) and extended to the HM coupled formulation in ICFEP by Kontoe et al (2008), is employed in the dynamic analysis. The initial stress state, before the Wenchuan earthquake, is reproduced by the static FE analysis simulating the dam construction.…”

Section: Dynamic Analysis Of the Yele Dammentioning

confidence: 99%

“…In this paper, the seismic response of a well-documented Chinese rockfill dam, the Yele dam, is investigated employing the dynamic HM formulation of the Imperial College Finite Element Program (ICFEP, Potts and Zdravković (1999)). A detailed description for the FE formulation of ICFEP can be found in Potts and Zdravković (1999) in static condition and in Kontoe (2006), Kontoe et al (2008) and Han et al (2015) in dynamic condition. Through the numerical investigation, different aspects of the numerical modelling for static and dynamic analyses of rockfill dams are validated against the available monitored data of the Yele dam before and during the Wenchuan earthquake.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the response of the Yele rockfill dam during the 2008 Wenchuan earthquake

Han

Zdravković

Kontoe

et al. 2016

Soil Dynamics and Earthquake Engineering

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An assessment of time integration schemes for dynamic geotechnical problems

Cited by 65 publications

References 10 publications

On the relative merits of simple and advanced constitutive models in dynamic analysis of tunnels

On the relative merits of simple and advanced constitutive models in dynamic analysis of tunnels

Steady-State and Transient Dynamic Visco-Elastic Response of Concrete and Earth Dams Due to Dam-Reservoir Interaction

Numerical investigation of the response of the Yele rockfill dam during the 2008 Wenchuan earthquake

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