Behaviour of Earth Dam under Seismic Load Considering Nonlinearity of the Soil

Raja, Mohammad Asif; Maheshwari, B. K.

doi:10.4236/ojce.2016.62007

Cited by 15 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The comparison between the response of the elastic and elastoplastic analysis shows that the presence of plastic deformations leads to the attenuation of accelerations in the dam, particularly at the dam crest; this result is attributed to the dissipation of energy by plastic deformation. The results obtained are conclusive in more than one way, compared to the work carried out in the same context [12,13,14,15] and can be used preferentially as a database for subsequent investigation work in the field of modelling the dynamic behaviour of earthen dams.…”

Section: Conclusion and Recommendationssupporting

confidence: 54%

Dynamic Modelling of the Behaviour of the Ouarkiss Earthen Dam Under Seismic Loads

Seghir

Fourar

Zeroual

et al. 2020

GSE

View full text Add to dashboard Cite

The dynamic modelling of the behaviour of the Ouarkiss earthen dam under seismic loads was performed using the finite elements method (FEM), with an approach in effective stresses. The soil behaviour is described by the Mohr-Coulomb criterion. A numerical method and a procedure of analysis are presented in this work. The seismic response of an earthen dam was evaluated. Particular emphasis is placed on the calculation of stresses, displacements, deformations and interstitial overpressures recorded during the seismic solicitation. It has been shown that numerical simulation is able to highlight the fundamental aspects of the displacements and deformations processes experienced by the structure of dam and to produce preliminary results for the evaluation of the seismic behaviour of the structure taking into account the physical non-linearity of the materials constituting the body of the dam and the effect of the rigidity of the different zones of the dam and the foundation.In this study, the seismic behaviour of the Ouarkiss earthen dam will be analysed taking into account the physical non-linearity of the materials constituting the body of the dam and the effect of the rigidity of the different zones of the dam and of the foundation [4,5].Materials whose behaviour is elastoplastic are characterised by the appearance of elastic reversible deformations and irreversible plastic deformations. On the loading surface, two behaviour cases are possible: in the case of the Mohr-Coulomb model, the loading surface does not evolve, we then speak of a perfectly plastic elastic law; when the loading surface evolves during the loading, we are talking about an elastoplastic model with work hardening. GeoScience EngineeringVolume 66 (2020), No. 1

show abstract

Section: Conclusion and Recommendationssupporting

confidence: 54%

Dynamic Modelling of the Behaviour of the Ouarkiss Earthen Dam Under Seismic Loads

Seghir

Fourar

Zeroual

et al. 2020

GSE

View full text Add to dashboard Cite

show abstract

“…It is used to evaluate safety factors with shear strength reduction'' SSR or ''phi-c reduction'' techniques (Maosong and Cang-Qin 2009;Baker 2006). Some combined methods based on probabilistic approaches of slope analysis and design with an aid of LEM, and FEM were investigated (El-Ramly et al 2002;Li and Lumb 1987;Griffiths and Fenton 2004;Raja and Maheshwari 2014;Raja and Maheshwari 2016). Recently, an artificial neural network with built-in optimization techniques based on the self-optimizing genetic algorithms (GA) was considered (Sung Eun Cho 2009).…”

Section: Equilibrium Equationmentioning

confidence: 99%

Review on Dynamic Behaviour of Earth Dam and Embankment During an Earthquake

et al. 2021

Self Cite

View full text Add to dashboard Cite

The earth dam analysis under the strong seismic load like a destructive earthquake is one of the major topics with respect to the dynamical assessment. Damage control and the structural behaviour during an earthquake is a very important issue for an earthen dam. In this study, a comprehensive review is presented based on literature for dynamic analysis of earth dams. In this context, some significant factors are discussed such as plane stress, plane strain, data monitoring, application of finite-element method or finite-difference method, reinforcement, free vibration analysis, seismic cracks, liquefaction on dams, utilization of shaking table and centrifuge tests based on the small-scale physical modelling in order to validate any numerical analysis. To explain these parameters, case studies are discussed. It is observed that the earth dam structures had the integrated response to increasing the acceleration or displacement at the crest. Consequently, the interaction between the dam and reservoir also the foundation was a very effective factor to establish the nonlinear behaviour. It seems that the reinforced techniques are an essential approach to improve the structural response during an earthquake.

show abstract

“…x the nonlinear seismic behavior of earth dams was considered in [15], using the finite element method and Geo-Studio software. In the numerical study, a nonlinear finite element analysis was used, taking into account the linear and elastic-plastic components of the model to describe the soil properties;…”

Section: Introductionmentioning

confidence: 99%

Strength of earth dams considering the elastic-plastic properties of soils

et al. 2023

View full text Add to dashboard Cite

The article provides a detailed review of well-known publications devoted to studying the stress state and dynamic behavior of earth dams, taking into account the elastic and elastic-plastic properties of soil. To assess the stress-strain state of earth dams, considering the elastic-plastic properties of soil under the action of static loads, a mathematical model was developed using the principle of virtual displacements. A technique, algorithm, and computer programs were developed for estimating the stress state of dams using the finite element method and the method of variable elasticity parameters. A test problem was solved to assess the adequacy of the developed models and the reliability of the technique, algorithms, and computer programs. The stress-strain state of the Pskem earth dam, 195 m high, was studied using the developed models and calculation methods, taking into account the elastic-plastic properties of soil under the action of body forces and various levels of filling the reservoir with water. It was established that an account for the elastic-plastic properties of soil leads to a sharp change in the stress state of the dam, especially in the upper prism and in the core of the dam, and changes the intensity of normal stresses, which can lead to a violation of the integrity of the dam.

show abstract

Behaviour of Earth Dam under Seismic Load Considering Nonlinearity of the Soil

Cited by 15 publications

References 1 publication

Dynamic Modelling of the Behaviour of the Ouarkiss Earthen Dam Under Seismic Loads

Dynamic Modelling of the Behaviour of the Ouarkiss Earthen Dam Under Seismic Loads

Review on Dynamic Behaviour of Earth Dam and Embankment During an Earthquake

Strength of earth dams considering the elastic-plastic properties of soils

Contact Info

Product

Resources

About