The design methods introduced in the recent seismic codes have significantly modified the design process for concentric braced frames. The code limitations on bracing slenderness and the overstrength demands for beams, columns and connections mostly affect the design of concentric braced frames and frequently give rise to either redundant or unfeasible design solutions. In this paper, following a critical review of Italian (OPCM), European (EC8) and American (AISC) seismic provisions, the design of 3 and 6 storey braced frame buildings is discussed, by varying the geometrical/structural parameters applicable to different design solutions. These case studies enable us to assess the impact of the code provisions on the design feasibility and structural weight of the bracings.
Nuove tendenze nella progettazione sismica di edifici a controventi concentrici
GRANDE, Ernesto;
2006-01-01
Abstract
The design methods introduced in the recent seismic codes have significantly modified the design process for concentric braced frames. The code limitations on bracing slenderness and the overstrength demands for beams, columns and connections mostly affect the design of concentric braced frames and frequently give rise to either redundant or unfeasible design solutions. In this paper, following a critical review of Italian (OPCM), European (EC8) and American (AISC) seismic provisions, the design of 3 and 6 storey braced frame buildings is discussed, by varying the geometrical/structural parameters applicable to different design solutions. These case studies enable us to assess the impact of the code provisions on the design feasibility and structural weight of the bracings.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
