1996•Journal of the Korean Society of Civil EngineersRequires access
A Study on the Impact Factor of Steel Plate Girder Bridges in Consideration of Road Surface Roughness
Young-Suk Park, Tae-Ju Chung
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Abstract
This paper is presented to obtain the dynamic responses of steel plate girder bridges in consideration of road surface roughness using 3-D vehicle model. bridge and vehicle are modeled as 3-D bridge and vehicle model. respectively. road surface roughness of the roadway and bridge decks are generated from power spectral density (PSD) for different road surface roughness. vehicles are modeled as two nonliner vehicle model with 7-D.O.F. for dump truck and 12-D.O.F. for tractor-trailer. Bridge-vehicle interaction equations are derived and impact factor of the steel plate girder bridges for different parameters are presented. simply supported steel plate girder bridges from The Standard Design Examples of Highway Bridges Superstructure published by the Ministry of Construction in Korea are used. spans of the bridges we 20.0m, 30.0m and 40.0m and their widths are 11.0m, respectively. impact factors of the bridges are calculated for 15t dump truck and 53T/C 40T/L tractor- trailer, with different speed and road surface roughness.