A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic Rehabilitation with FEMA 356: A Case Study
A seismic rehabilitation design project is presented to demonstrate how buckling-restrained braces were used in the voluntary seismic rehabilitation of two office buildings in the San Francisco Bay Area in accordance with FEMA 356. A seismic evaluation concluded that the existing braced frames were likely to experience connection failures and the diaphragm deflections under seismic loads would cause an undesirable splice failure in the gravity columns. The rehabilitation design for the two buildings required careful consideration of the owner's objectives including costs, aesthetics, and continued building operation by minimizing disruptions to building occupants. An external splayed brace design was selected using buckling-restrained braces, which have such desirable characteristics as stable hysteresis behavior with high energy dissipation and a lower yield capacity than conventional steel braced frames. Three-dimensional modeling and analyses of the buildings were performed in accordance with the FEMA 356 methodologies for linear static, linear dynamic response spectrum, nonlinear pushover, and nonlinear rime history analysis procedures. The analysis confirmed that the external braced frame design using buckling-restrained braces would efficiently enhance the building performance to achieve the owner's established rehabilitation objective.
Seismic Rehabilitation with FEMA 356: A Case Study
A seismic rehabilitation design project is presented to demonstrate how buckling-restrained braces were used in the voluntary seismic rehabilitation of two office buildings in the San Francisco Bay Area in accordance with FEMA 356. A seismic evaluation concluded that the existing braced frames were likely to experience connection failures and the diaphragm deflections under seismic loads would cause an undesirable splice failure in the gravity columns. The rehabilitation design for the two buildings required careful consideration of the owner's objectives including costs, aesthetics, and continued building operation by minimizing disruptions to building occupants. An external splayed brace design was selected using buckling-restrained braces, which have such desirable characteristics as stable hysteresis behavior with high energy dissipation and a lower yield capacity than conventional steel braced frames. Three-dimensional modeling and analyses of the buildings were performed in accordance with the FEMA 356 methodologies for linear static, linear dynamic response spectrum, nonlinear pushover, and nonlinear rime history analysis procedures. The analysis confirmed that the external braced frame design using buckling-restrained braces would efficiently enhance the building performance to achieve the owner's established rehabilitation objective.
Seismic Rehabilitation with FEMA 356: A Case Study
Mitchell, Andrew D. (author) / Parra, Roger S. (author) / Heintz, Jon A. (author)
Structures Congress 2005 ; 2005 ; New York, New York, United States
Structures Congress 2005 ; 1-9
2005-04-18
Conference paper
Electronic Resource
English
Seismic Rehabilitation with FEMA 356: A Case Study
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