CCEER-99-13: Shake Table Testing of Flexure Dominated Reinforced Concrete Bridge Columns”, Department of Civil Engineering
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Authors
Laplace, Patrick
Sanders, David H.
Douglas, Bruce M.
Saiidi, Mehdi S.
Issue Date
1999-12-01
Type
Report
Language
Keywords
CCEER
Alternative Title
Abstract
Two 1/3-scale circular reinforced concrete bridge columns with identical
properties were tested on the University of Nevada, Reno (UNR) shake table system. An
inertial loading system termed the mass rig was developed to test single-degree-offreedom
bridge columns on the shake table. A computer program called RC-SHAKE
was developed to calculate the response of specimens subjected to dynamic loading. The
columns in this study were 16 inches in diameter and 72 inches in height. Current
CALTRANS bridge design details were used in the design of the columns. The columns
were scaled models of the prototype column used in a standard-cyclic study performed at
NIST7. The test program for the UNR study consisted of two different earthquake
loading scenarios to compare the effect of load history on the performance of the two
columns. A significant difference in column response was shown due to the two loading
scenarios. RC-SHAKE adequately predicted column deflections under earthquake
loading. Using the results from the NIST study showed strain rate can have a significant
effect on column capacity for dynamic loading versus slow-cyclic testing. Bridge
columns designed using current codes were shown to perform well for earthquake
loading.
Description
Report No. CCEER-99-13
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In Copyright