The influence of brace over-strength distributions on the seismic response of steel braced frames is studied through a method based on response sensitivity computation. A range of variation of the brace over-strength is defined and the brace over-strength patterns that are the most unfavourable for each damage measure are identified. Then, the relationship between the brace over-strength used in the seismic design and the maximum seismic performance reduction is obtained. Results for a case study considering a realistic buckling-restrained braced steel frame are presented and discussed showing the use of the developed sensitivity-based methodology.

Analysis of the seismic performance reduction in steel braced frames due to irregular brace over-strength distributions

DALL'ASTA, Andrea;ZONA, Alessandro;
2013-01-01

Abstract

The influence of brace over-strength distributions on the seismic response of steel braced frames is studied through a method based on response sensitivity computation. A range of variation of the brace over-strength is defined and the brace over-strength patterns that are the most unfavourable for each damage measure are identified. Then, the relationship between the brace over-strength used in the seismic design and the maximum seismic performance reduction is obtained. Results for a case study considering a realistic buckling-restrained braced steel frame are presented and discussed showing the use of the developed sensitivity-based methodology.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11581/287185
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