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http://dx.doi.org/10.7781/kjoss.2012.24.6.613

A Study on Repair/ Retrofit for Deteriorations of Steel Bridge -Behavior Characteristics of Welded Joint Part of Flange and Repair/Retrofit of Fatigue Crack in Railway Steel Bridge-  

Kyung, Kab Soo (Dep. of Civil Engineering, Korea Maritime University)
Lee, Sung Jin (Dep. of Civil Engineering, Korea Maritime University)
Park, Jin Eun (Dep. of Civil Engineering, Nagoya University)
Cha, Cheol Jun (Highway Inspection Section, KISTEC)
Publication Information
Journal of Korean Society of Steel Construction / v.24, no.6, 2012 , pp. 613-625 More about this Journal
Abstract
Since railway bridge frequently have a chance of passing train load close to design load, it is necessary to reflect sufficiently fatigue property in early design phase for many structural details. Nevertheless fatigue cracks are reported partly in deck plate girder of railway steel bridge because of the weight and arrangement of axial load acting on railway bridge, the application of improper structural details for fatigue problem etc.. One of main cause for fatigue crack at the welded part of upper flange and web is caused by the eccentricity action of train load due to the difference of center to center spacing between the main girder supporting sleeper and the rail acting train load. For the existing deck plate girder of railway steel bridge, in this study, field survey, field measurement and a series of structural analysis were performed. In addition, the characteristics of structural behavior, the causes and repair/ retrofit of fatigue crack were examined in the target bridge.
Keywords
railway steel bridge; welded joint part of upper flange and web; vertical stiffener; eccentric action; rotational deformation; fatigue damage; repair and retrofit;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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