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Report No.: CCEER 88-1

Title: A Preliminary Study of One-Way Reinforced Concrete Pier Hinges Subjected to Shear and Flexure

Authors: J. Orie and M. Saiidi

Date: January 1988

Sponsoring Agency: National Science Foundation

Performing Organization:
Department of Civil Engineering/258
University of Nevada, Reno
Reno, NV 89557

Abstract:

One-way reinforced concrete bridge column-to-foundation hinge connections were studied. Four specimens representing one-eighth scale models of the one-way hinges found on the Rose Creek bridge were built and tested. The specimens were subjected to uniaxial moment transfer in the strong direction.

Variables in the test were (a) shear-span to depth ratio and (b) monotonic versus cyclic behavior. Results from part (a) of the test indicated that shear resistance was primarily derived from aggregate interlock of the concrete within the compression zone, and not along the entire section depth as is assumed in the current design practice which is based upon shear friction theory. Results from part (b) of the test indicated that the reversal of load reduced the shear stiffness of the hinge considerably and that shear stiffness provided by the dowels was very small, thus reducing the energy absorption capacity of the hinge during earthquakes (Abstract by authors).

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University of Nevada, Reno

University of Nevada, Reno
1664 N. Virginia Street
Reno,  NV  89557-

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