A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Progressive collapse analysis of seismically designed steel braced frames
AbstractThe progressive collapse resistance of seismically designed steel braced frames is investigated using validated computational simulation models. Two types of braced systems are considered: namely, special concentrically braced frames and eccentrically braced frames. The study is conducted on previously designed 10-story prototype buildings by applying the alternate path method. In this methodology, critical columns and adjacent braces, if present, are instantaneously removed from an analysis model and the ability of the model to successfully absorb member loss is investigated. Member removal in this manner is intended to represent a situation where an extreme event or abnormal load destroys the member. The simulation results show that while both systems benefit from placement of the seismically designed frames on the perimeter of the building, the eccentrically braced frame is less vulnerable to progressive collapse than the special concentrically braced frame. Improvement in behavior is due to improved system and member layouts in the former compared to the latter rather than the use of more stringent seismic detailing.
Progressive collapse analysis of seismically designed steel braced frames
AbstractThe progressive collapse resistance of seismically designed steel braced frames is investigated using validated computational simulation models. Two types of braced systems are considered: namely, special concentrically braced frames and eccentrically braced frames. The study is conducted on previously designed 10-story prototype buildings by applying the alternate path method. In this methodology, critical columns and adjacent braces, if present, are instantaneously removed from an analysis model and the ability of the model to successfully absorb member loss is investigated. Member removal in this manner is intended to represent a situation where an extreme event or abnormal load destroys the member. The simulation results show that while both systems benefit from placement of the seismically designed frames on the perimeter of the building, the eccentrically braced frame is less vulnerable to progressive collapse than the special concentrically braced frame. Improvement in behavior is due to improved system and member layouts in the former compared to the latter rather than the use of more stringent seismic detailing.
Progressive collapse analysis of seismically designed steel braced frames
Khandelwal, Kapil (author) / El-Tawil, Sherif (author) / Sadek, Fahim (author)
Journal of Constructional Steel Research ; 65 ; 699-708
2008-02-18
10 pages
Article (Journal)
Electronic Resource
English
Progressive collapse analysis of seismically designed steel braced frames
| Online Contents | 2009
Progressive collapse analysis of seismically designed steel braced frames
| Online Contents | 2009
Progressive collapse analysis of seismically designed braced and unbraced steel frame structures
| Springer Verlag | 2023