A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Wheel Load Distribution in Concrete Box Girder Bridges
The investigation was concerned with the development of an improved design method for determining the wheel load distribution in multi-celled non-skew box girder bridges. The basic approach used was to analyze a large number of selected typical box girder bridges to determine analytical values for the maximum number of wheel loads taken by each girder loaded by standard HS 20-44 trucks in critical positions. The typical bridges analyzed included variations in the important parameters affecting wheel load distribution such as span, total width, number of lanes, number of cells, cell width (web spacing), and fixity at the supports. In all, the results from about 120 separate computer analyses of box girder bridges under different loadings were used in the study. Based on these results, a design method for wheel load distribution was developed which is believed to represent more accurately the true design loads to be carried by each girder of a given bridge, than does the present method of design. A design example is presented of a 60', three-cell simply supported box girder bridge. Comparisons are made with the accurate method, simplified method, and the present AASHO method. It is shown that the present AASHO method differs in some instances from the accurate method by as much as 15% on the unconservative side. (Author)
Wheel Load Distribution in Concrete Box Girder Bridges
The investigation was concerned with the development of an improved design method for determining the wheel load distribution in multi-celled non-skew box girder bridges. The basic approach used was to analyze a large number of selected typical box girder bridges to determine analytical values for the maximum number of wheel loads taken by each girder loaded by standard HS 20-44 trucks in critical positions. The typical bridges analyzed included variations in the important parameters affecting wheel load distribution such as span, total width, number of lanes, number of cells, cell width (web spacing), and fixity at the supports. In all, the results from about 120 separate computer analyses of box girder bridges under different loadings were used in the study. Based on these results, a design method for wheel load distribution was developed which is believed to represent more accurately the true design loads to be carried by each girder of a given bridge, than does the present method of design. A design example is presented of a 60', three-cell simply supported box girder bridge. Comparisons are made with the accurate method, simplified method, and the present AASHO method. It is shown that the present AASHO method differs in some instances from the accurate method by as much as 15% on the unconservative side. (Author)
Wheel Load Distribution in Concrete Box Girder Bridges
A. C. Scordelis (author) / C. Meyer (author)
1969
152 pages
Report
No indication
English
Civil Engineering , Bridges , Design , Concrete , Beams(Structural) , Structural parts , Supports , Diaphragms(Mechanics) , Web beams , Test methods , Loading(Mechanics) , Distribution , Stresses , Deflection , Boundary value problems , Traffic , Roads , Vehicles , Concrete box girder bridges , HS 20-44 trucks , Wheels , Dimensions , Box beams
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