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http://dx.doi.org/10.4334/JKCI.2004.16.1.111

Strength Degradation and Failure of Circular RC Bridge Columns with Longitudinal Steel Connection under Cyclic Lateral Load  

Lee Jae-Hoon (Dept. of Civil Engineering, Yeungnam University)
Jung Chul-Ho (DM Engineering Co., Ltd.)
Ko Seong-Hyun (Dept. of Civil Engineering, Yeungnam University)
Son Hyeok-Soo (Dept. of Civil Engineering, Yeungnam University)
Publication Information
Journal of the Korea Concrete Institute / v.16, no.1, 2004 , pp. 111-124 More about this Journal
Abstract
This research is a part of a research program to verify the seismic performance of circular reinforced concrete bridge columns with respect to longitudinal steel connection details under cyclic lateral load. A total of 21 column specimens were constructed and tested. Main variables in this test program were longitudinal steel connection details(continuous, lap-spliced, and mechanically connected), confinement steel ratio, and axial force ratio, etc. The test results of the columns with different longitudinal steel connection details showed different failure mode, strength degradation, and seismic performance. From the quasi-static test, it was found that the columns with all longitudinal reinforcement lap-spliced showed significantly reduced ductility. However, seismic performance of the columns with half of longitudinal reinforcement lap-spliced showed limited ductility but much more ductile behaviour than the columns with all longitudinal reinforcement lap-spliced. It was also found that the seismic performance, failure mode and strength degradation of columns with mechanical connected longitudinal reinforcement were similar to those of columns with continuous longitudinal reinforcement.
Keywords
circular bridge columns; longitudinal steel connection; seismic performance; strength degradation; failure;
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Times Cited By KSCI : 1  (Citation Analysis)
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