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Comparative Study among Conventional and Adaptive Pushover Methods
Nonlinear Static Pushover, NSP, is approximately reliable solution for time consuming problem of estimating the capacity and deformations of structures subjected to earthquakes. Conceptually, NSP methods rely on pushing the structure with incremental static lateral loads by considering material inelasticity and geometric nonlinearity. Despite of some distinct demerits of conventional pushover analysis these methods are credited with new trend of performance-oriented seismic codes. Subsequently, several methods with varying degree of rigor and success have been developed to overcome their deficiencies. In this study a comparative study in two aspects including estimating the capacity of structure and interstorey drifts of an R/C regular framed structure were implemented. The results of applying 5 types of NSP methods including conventional FEMA-356 "Triangular" and "Uniform" methods, "Force-based", "Displacement-based" and "Interstorey drift-based" adaptive methods were evaluated referenced to the "Incremental Dynamic Analysis" outcomes as the most precise approach. The numerical outcomes, demonstrated the reliability of interstorey drift-based method in evaluating the capacity of structure as well as superiority of this method in estimating the interstorey drifts by increasing the value of control-node displacement.
Comparative Study among Conventional and Adaptive Pushover Methods
Nonlinear Static Pushover, NSP, is approximately reliable solution for time consuming problem of estimating the capacity and deformations of structures subjected to earthquakes. Conceptually, NSP methods rely on pushing the structure with incremental static lateral loads by considering material inelasticity and geometric nonlinearity. Despite of some distinct demerits of conventional pushover analysis these methods are credited with new trend of performance-oriented seismic codes. Subsequently, several methods with varying degree of rigor and success have been developed to overcome their deficiencies. In this study a comparative study in two aspects including estimating the capacity of structure and interstorey drifts of an R/C regular framed structure were implemented. The results of applying 5 types of NSP methods including conventional FEMA-356 "Triangular" and "Uniform" methods, "Force-based", "Displacement-based" and "Interstorey drift-based" adaptive methods were evaluated referenced to the "Incremental Dynamic Analysis" outcomes as the most precise approach. The numerical outcomes, demonstrated the reliability of interstorey drift-based method in evaluating the capacity of structure as well as superiority of this method in estimating the interstorey drifts by increasing the value of control-node displacement.
Comparative Study among Conventional and Adaptive Pushover Methods
Seifi, M. (author) / Noorzaei, J. (author) / Jaafar, M. S. (author) / Hejazi, F. (author)
Technical Council on Lifeline Earthquake Engineering Conference (TCLEE) 2009 ; 2009 ; Oakland, California, United States
TCLEE 2009 ; 1-12
2009-06-24
Conference paper
Electronic Resource
English
Comparative Study among Conventional and Adaptive Pushover Methods
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