Desigin of Buckling-Restrained Braced Frames Using Nonlinear Time History Analysis and Optimization

A procedure for the design of buckling-restrained braced frames is presented. The procedure uses nonlinear time history analysis and optimization. Results from this procedure are compared to those from the commonly used equivalent lateral force procedure. Results are used to develop design curves an...

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Published in:Journal of structural engineering (New York, N.Y.) N.Y.), 2009-05 (5), p.461-468
Main Authors: Balling, Richard J, Balling, Lukas J, Richards, Paul W
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Language:English
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Balling, Lukas J
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description A procedure for the design of buckling-restrained braced frames is presented. The procedure uses nonlinear time history analysis and optimization. Results from this procedure are compared to those from the commonly used equivalent lateral force procedure. Results are used to develop design curves and formulas for rapid determination of cross-sectional areas for buckling-restrained braces in each story. One interesting result is that the optimum variation of area from story to story is nearly linear for most cases studied. This result is not predicted by the equivalent lateral force procedure, and can only be discovered through optimization and nonlinear time history analysis.
doi_str_mv 10.1061/(ASCE)ST.1943-541X.0000007
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title Desigin of Buckling-Restrained Braced Frames Using Nonlinear Time History Analysis and Optimization
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