The local corrosion of steel plate girder bridges at supports is a major issue affecting the safety. To clarify its effect on the buckling characteristics and bearing capacity, the static tests were carried out. The bearing capacities and local deformation were compared. The local buckling characteristics were refined by stress testing. To further investigate the effect mechanism of corrosion, the global finite element models (FEMs) of bridge were established. Separate corrosion of each component was considered. By comparing the strength and ultimate loads, the key member on bearing capacity reduction was specified. The influence of corrosion scope including the parameters of length, height, and depth on the bearing capacity was clarified. The results show the effect mechanisms of different-member corrosion on bearing capacity reduction were completely diverse. The web corrosion was the main cause of the bearing capacity reduction, which was the first to buckle. The relative position between corrosion scope and the support should also be considered during the evaluation of bearing capacity.
Buckling and Bearing Capacity Variation Caused by Local Corrosion at Support in Steel Bridge
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 26 , 11 ; 4573-4583
2022-11-01
11 pages
Article (Journal)
Electronic Resource
English
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