STRENGTH AND DUCTILITY OF CAST-IN-PLACE BEAM-COLUMN JOINTS

The results of an experimental study of the behavior of cast-in-place reinforced concrete beam-column joints, subjected to slow load reversals simulating seismic loading are presented. Variables were the amount and size of joint reinforcement, and stress vs. strain characteristics of the joint steel. It was found that loading history does not affect the strength but seriously affects the stiffness of beam-column sub-assemblies; that the ACI equation predicts the cracking shear well but that the 45 degree truss analogy does not predict the behavior of reinforced joints. Stress vs. strain characteristic of the joint steel has a significant effect on confinement provided and the energy dissipating capacity of beams depends significantly on the anchorage provided at the joints. To ensure that the plastic hinge is formed in the beam, the column flexural strength should be based on the core alone.

Media Info

  • Features: References;
  • Pagination: p. 293-350

Subject/Index Terms

Filing Info

  • Accession Number: 00188926
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SP-53 Conf Paper
  • Files: TRIS
  • Created Date: Mar 28 1979 12:00AM