Title of article :
A STUDY ON NONLINEAR BEHAVIOR AND SEISMIC DAMAGE ASSESSMENT OF CONCRETE ARCH DAM-RESERVOIRFOUNDATION SYSTEM USING ENDURANCE TIME ANALYSIS
Author/Authors :
Hariri Ardebili, M.A. University of Colorado at Boulder - Department of Civil Environmental and Architectural Engineering, USA , Mirzabozorg, H. k.n.toosi university of technology - Department of Civil Engineering, تهران, ايران , Kianoush, R. Ryerson University - Department of Civil and Environmental Engineering, Canada
Abstract :
In the present paper, nonlinear behavior of mass concrete simulated by smeared crack model is combined with Endurance Time Analysis (ETA) method for studying seismic response of arch dams. ETA is a time-history based dynamic pushover procedure in which special predesigned intensifying acceleration functions are used for analysis and estimation of structural responses in various performance levels by just a single analysis. For this purpose 203m DEZ arch dam is selected as case study and the finite element model of dam-reservoir-foundation system is excited in various performance levels. It was found that ETA provides reasonable responses in comparison with Time-History Analysis (THA) at equivalent target time. In addition, ETAleads to acceptable estimation of crack profiles within dam body and can reduce the total time of analyses, meaningfully. Generally, it was concluded that ETA can be considered as an alternative of THA in nonlinear analysis of arch dams.
Keywords :
endurance time analysis , smeared crack model , nonlinear seismic behavior , concrete arch dam , crack profile
Journal title :
International Journal of Optimization in Civil Engineering
Journal title :
International Journal of Optimization in Civil Engineering
