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Numerical analysis of non-linear dynamic behavior of earth dams
A numerical study is conducted to investigate the dynamic behavior of earth dams. The numerical investigation employs a fully nonlinear dynamic finite difference analysis incorporating a simple elastic perfectly plastic constitutive soil model to describe the stress-strain response of the soil and Rayleigh damping to increase the level of hysteretic damping. The Masing rules are implemented into the constitutive model to precisely explain the soil response under general cyclic loading. To calibrate the numerical model, the Long Valley (LV) earth dam subjected to the 1980 Mammoth Lake earthquake as a real case-history is analyzed and the obtained numerical results are compared with the real measurements at the site in both the time and frequency domains. Relative good agreements are observed between computed and measured quantities. Then, a parametric study is carried out to identify the effects of dam height and input motion characteristics on the dynamic response of earth dams. Three real earthquake records with different intensities and PGAs are used as input motions. It is found that the numerical model can capture the nonlinear dynamic response of earth dams accurately.
Numerical analysis of non-linear dynamic behavior of earth dams
A numerical study is conducted to investigate the dynamic behavior of earth dams. The numerical investigation employs a fully nonlinear dynamic finite difference analysis incorporating a simple elastic perfectly plastic constitutive soil model to describe the stress-strain response of the soil and Rayleigh damping to increase the level of hysteretic damping. The Masing rules are implemented into the constitutive model to precisely explain the soil response under general cyclic loading. To calibrate the numerical model, the Long Valley (LV) earth dam subjected to the 1980 Mammoth Lake earthquake as a real case-history is analyzed and the obtained numerical results are compared with the real measurements at the site in both the time and frequency domains. Relative good agreements are observed between computed and measured quantities. Then, a parametric study is carried out to identify the effects of dam height and input motion characteristics on the dynamic response of earth dams. Three real earthquake records with different intensities and PGAs are used as input motions. It is found that the numerical model can capture the nonlinear dynamic response of earth dams accurately.
Numerical analysis of non-linear dynamic behavior of earth dams
Numerische Analyse des nichtlinearen dynamischen Verhaltens von Erddämmen
Ebrahimian, B. (author)
2009
6 Seiten, 19 Bilder, 3 Tabellen, 11 Quellen
Conference paper
English
Damm , Dammbau , Staudamm , Bauingenieurwesen , Erddamm , Aufschüttung , nichtlineares dynamisches System , Nichtlinearität , Finite-Differenz-Methode , Differenzenverfahren , numerisches Verfahren , Näherungsverfahren , Modell , mathematisches Modell , mathematische Modellierung , Dämpfung , mechanische Hysterese , Erdbeben , Seismologie , Spannung (mechanisch) , Verformung , Bodenmechanik , Standsicherheit , Modellierung
Numerical analysis of nonlinear dynamic behavior of earth dams
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Dynamic behavior of earth dams containing stratified soils
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Dynamic response of earth dams
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