Title:
Scale Relations for Reinforced Concrete Beam-Column Joints
Author(s):
Daniel P. Abrams
Publication:
Structural Journal
Volume:
84
Issue:
6
Appears on pages(s):
502-512
Keywords:
beams (supports); bending moments; columns (supports); deflection; ductility; earthquakes; frames; flexural strength; hysteresis; joints (junctions); models; reinforced concrete; scale (ratio); stiffness; strains; structural analysis; structural design; S
DOI:
10.14359/2727
Date:
11/1/1987
Abstract:
Eighteen reinforced concrete beam-column assemblies were constructed at small, medium, or large scales (approximately one-twelfth, one-quarter, or three-quarter scales). Specimens were subjected to reversals of lateral force to study scale correlations for nonlinear hysteretic properties. Similar resistance mechanisms were found for specimens at each scale; however, rates of stiffness deterioration were highest for small-scale specimens as a result of weaker bonds between model reinforcement and mortar. Scale relations were different for interior and exterior beam-column assemblies. Flexural strengths were related by the cube of the scale factor. Force-deflection relations for one-quarter scale specimens were very similar to those of large-scale specimens.