Title:
Strengthening of a nonductile concrete frame to a dynamic response criterion
Author(s):
R. E. Englekirk and S. C. Huang
Publication:
Structural Journal
Volume:
89
Issue:
3
Appears on pages(s):
305-314
Keywords:
concrete construction; confined concrete; ductility; dynamic structural analysis; frames; joints (junctions); reinforcing steels; shear properties; splicing; Structural Research
DOI:
10.14359/2966
Date:
5/1/1992
Abstract:
An inelastic time history analysis supported by an experimental program was used to determine the need to strengthen an existing concrete frame. A cyclic response study of a 3/4-scale model was used to quantify available subassembly ductility. The subassembly model was taken from a concrete frame currently viewed as being nonductile, since its detailing is not code-compliant. The ductility demand on the components of this concrete frame, used to provide a seismic bracing for a 14-story concrete building, was estimated using an inelastic time history response procedure. Potential ductility limiting details are identified and inexpensive retrofit details are developed. 249-492