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An Experiment on Redundancy in Simple Span Two-Girder Bridge - Effects of Lateral Bracing  

Park, Yong Myung (부산대학교 토목공학과)
Joe, Woon Do Ji (부산대학교 토목공학과)
Hwang, Min Oh (포항산업과학연구원 토목구조연구실)
Lee, Dae Yong (포항산업과학연구원 토목구조연구실)
Yoon, Tae Yang (포항산업과학연구원 토목구조연구실)
Publication Information
Journal of Korean Society of Steel Construction / v.19, no.3, 2007 , pp. 271-280 More about this Journal
Abstract
This paper presents the results of an experimental study to evaluate the redundancy in two plate-girder bridges, which are generally classified as non-redundant load path structures. The study was performed at a time when one of the two girders was damaged. The bottom lateral bracing was considered the experimental variable, and two 1/5-scale bridge specimens of simple span with and without a lateral bracing system were fabricated. Loading tests were first performed on the intact specimens without a cracked girder, within an elastic range. Thereafter, the ultimate loading tests were conducted on the damaged specimens with an induced crack at the center of a girder. The test results showed that the cross beams and the concrete deck redistributed some of the load to the uncracked girder, but the lateral bracing system played an important role in improving the redundancy during the damage and was also effective for load redistribution even when the bridge was intact.
Keywords
redundancy; two-girser bridge; bottom lateral bracing; fractured girder; load redistribution;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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