Influence of damping and force hypotheses for evaluating ductility demand of structures subjected to time history wind loading. Sabbek, T., Langlois, S., & Legeron, F. In pages Air Worldwide; American Association for Wind Engineering (AAWE); CPP Wind Engineering and Air Quality Consultants; et al.; Herbert Wertheim College of Engineering, University of Florida (UF); International Association for Wind Engineering (IAWE) - , Gainesville, FL, United states, 2017. Admittance functions;Aerodynamic damping;Extreme winds;High rise structures;Nonlinear dynamic time-history analysis;Shear frame structures;Strength reduction factors;Structural behaviors;abstract bibtex Current wind design procedures require that structural behavior remains elastic under wind loading corresponding to a specific return period unlike seismic codes that set some specifications to account for the ductile behavior of structures. Based on both linear and nonlinear dynamic time history analyses of simplified shear frame structures, this study examines the sensitivity of the ductility demand to different analysis hypotheses, and gives recommendations for their adequate values to be used in extended parametric studies. In particular, the current results show that the use of admittance functions strongly influence the ductility demand of structures. It was also shown that the ductility demand of the structure varies significantly with the damping ratio. More specifically, it was found that a 1% damping ratio (including the aerodynamic damping) is a coherent and conservative value to be used for parametric studies on medium-to-high-rise structures in order to establish a relation between the ductility demand and the strength reduction factor for structures subjected to extreme wind loadings.
@inproceedings{20173904211215 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2023 Elsevier Inc.},
copyright = {Compendex},
title = {Influence of damping and force hypotheses for evaluating ductility demand of structures subjected to time history wind loading},
journal = {2017 Americas Conference on Wind Engineering, ACWE 2017},
author = {Sabbek, Taleb and Langlois, Sebastien and Legeron, Frederic},
year = {2017},
pages = {Air Worldwide; American Association for Wind Engineering (AAWE); CPP Wind Engineering and Air Quality Consultants; et al.; Herbert Wertheim College of Engineering, University of Florida (UF); International Association for Wind Engineering (IAWE) - },
address = {Gainesville, FL, United states},
abstract = {Current wind design procedures require that structural behavior remains elastic under wind loading corresponding to a specific return period unlike seismic codes that set some specifications to account for the ductile behavior of structures. Based on both linear and nonlinear dynamic time history analyses of simplified shear frame structures, this study examines the sensitivity of the ductility demand to different analysis hypotheses, and gives recommendations for their adequate values to be used in extended parametric studies. In particular, the current results show that the use of admittance functions strongly influence the ductility demand of structures. It was also shown that the ductility demand of the structure varies significantly with the damping ratio. More specifically, it was found that a 1% damping ratio (including the aerodynamic damping) is a coherent and conservative value to be used for parametric studies on medium-to-high-rise structures in order to establish a relation between the ductility demand and the strength reduction factor for structures subjected to extreme wind loadings.<br/>},
key = {Ductility},
keywords = {Structural dynamics;Seismic design;Damping;Time domain analysis;Nonlinear analysis;},
note = {Admittance functions;Aerodynamic damping;Extreme winds;High rise structures;Nonlinear dynamic time-history analysis;Shear frame structures;Strength reduction factors;Structural behaviors;},
}
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