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Title

Numerical analysis of soil liquefaction induced failure of earth dams

Year: 1396
COI: LTBD04_111
Language: EnglishView: 295
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Authors

Babak Ebrahimian - Faculty of Civil, Water and Environmental Engineering, Abbaspour School of Engineering, Shahid Beheshti University (SBU), Tehran, Iran - The Highest Prestigious Scientific and Professional National Foundation, Iran s National Elites Foundation (INEF), Teh
Ali Noorzad - Faculty of Civil, Water and Environmental Engineering, Abbaspour School of Engineering, Shahid Beheshti University (SBU), Tehran, Iran

Abstract:

This study presents numerical modeling of the dynamic behavior of an earth dam rested on a liquefiable foundation. Numerical simulations are carried out using effective stress-based, fully coupled nonlineardynamic analysis approach. The Finn-Byme model with extended Masing rules is employed to model pore pressure generation in the liquefied soils. In this regard, Masing rules are implemented into the constitutive relations to precisely explain the nonlinear response of soil under general cyclic loading. As a result, the soil shear stifmess and hysteretic damping can change with loading history. Pore pressure is accumulated as a function of the cyclic shear strain amplitude. The procedure of calibrating the constructed numerical model with well-documented centrifuge test data is addressed. Acceptable agreements are shown between the results obtained Hom the current investigation and those of experimental observations available in the literature. Afterwards, the dynamic response of an earth dam founded on a liquefiable sandy soil foundation is evaluated and discussed. Special emphasis is given to the computed excess pore water pressures, deformations and accelerations dining dynamic loading. It is shown that the numerical model can predict the essential aspects of liquefaction phenomenon occurred in the earth dam-foundation system during dynamic loading.

Keywords:

Numerical simulation, nonlinear dynamic response, liquefaction, earth dam

Paper COI Code

This Paper COI Code is LTBD04_111. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/680229/

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Ebrahimian, Babak and Noorzad, Ali,1396,Numerical analysis of soil liquefaction induced failure of earth dams,4th International Conference on long-Term Behavior and Environmentally Friendly Rehabilitaion Technologies of Dams,Tehran,,,https://civilica.com/doc/680229

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Type of center: دانشگاه دولتی
Paper count: 19,356
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