Title:
Need to Develop Shear Ductility in Prestressed Members
Author(s):
Robert E. Englekirk and Attila Beres
Publication:
Concrete International
Volume:
16
Issue:
10
Appears on pages(s):
49-56
Keywords:
beams (supports); ductility; girders; parking facilities; precast concrete; prestressing; shear properties; General
DOI:
Date:
10/1/1994
Abstract:
Vertical accelerations produced by the Northridge earthquake caused the shear capacities of prestressed members of the parking structures at Northridge Fashion Center to be exceeded and, since the provided shear reinforcement did not develop a ductile load path, the system collapsed. Both the shear mechanism in prestressed members and the dynamic behavior of floor systems will be discussed. The need to provide ductility in gravity load-carrying systems will become clear. Methods for providing ductility will be presented, and the need for research identified.