Title:
Consideration of Questions about Beam-Column Joints
Author(s):
Stavroula Pantazopoulou and John Bonacci
Publication:
Structural Journal
Volume:
89
Issue:
1
Appears on pages(s):
27-36
Keywords:
beams (supports); connections; cyclic loads; deformation; earthquake-resistant structures; joints (junctions); reinforced concrete; stirrups; Structural Research
DOI:
10.14359/1281
Date:
1/1/1993
Abstract:
The mechanics of beam-column joints in laterally loaded frame structures are investigated in this paper. The formulation presented establishes compatibility of strains and stress equilibrium. Factors known to affect the behavior of connections, including the effect of lateral restraint (present in connections of indeterminate structures) as well as the reduction of concrete strength associated with diagonal tensile strains, are considered. The role of stirrups and axial load on the behavior of the joint are illustrated clearly. In addition to providing an improved understanding of joint behavior, the derivation reflects the relationship between the design limit states and corresponding deformations, giving an opportunity to link joint design to the overall lateral drift of the structure.