Title:
Monotonic and Cyclic Response of One-Way Reinforced Concrete Bridge Pier Hinges in the Strong Direction
Author(s):
M. Saiidi and David Straw
Publication:
Structural Journal
Volume:
90
Issue:
5
Appears on pages(s):
568-573
Keywords:
bridges (structures); columns (supports); earthquakes; hinges (structural); loads (forces); reinforced concrete; shear properties; tests; Structural Research
DOI:
10.14359/3953
Date:
9/1/1993
Abstract:
An experimental study of four one-sixth-scale reinforced concrete specimens designed to act as one-way hinges is reported. The specimens were subjected to a constant axial load and variable horizontal loads applied in the strong direction. Both monotonic and cyclic loads were applied. Relatively small aspect ratios for the specimens were used to increase the potential effect of shear. Results showed that even when the aspect ratio was as low as 1, flexure and not shear controlled the strength of the hinges. Smaller aspect ratios led to larger horizontal slippage and rotation at the hinge, and reduced the stiffness and energy dissipation of the specimens. It was also found that the concrete at the hinge throat region is capable of developing strains as high as nearly 0.03, and that its compressive strength is approximately 80 percent higher than the measured cylinder strength.