Title: Cyclic response of fibrous cast-in-place connections in precast beam-column subassemblages

Author(s): Khaled S. Soubra, James k. Wight, and Antoine E. Naaman

Publication: Structural Journal

Volume: 90

Issue: 3

Appears on pages(s): 316-323

Keywords: beams (supports); cyclic loads; ductility; energy dissipation; earthquake-resistant structures; fiber reinforced concrete; metal fibers; joints (junctions); precast concrete; stiffness; strength; Structural Research

DOI: 10.14359/4191

Date: 5/1/1993

Abstract:
Four beam-column subassemblages were constructed and tested under cyclic loading to verify the possibility of obtaining a strong, ductile, and energy-dissipating connection between precast elements in seismic areas. The subassemblages, referred to as T-specimens, consisted of two precast parts joined together by a cast-in-place (CIP) fiber reinforced concrete (FRC) connection. It was observed that the use of fiber reinforced concrete in the CIP connection dramatically improved the cyclic behavior of the specimens. Displacement ductilities of up to 6.0 were observed, and higher load levels were attained for the FRC specimens when compared to the control specimen. The maximum cumulative energy dissipated by one FRC specimen was more than 10 times that for the control specimen.