A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Field Testing of Horizontally Curved Steel Girder Bridges
Experimentally determined response of a symmetrical, two-span, continuous, horizontally curved steel box-girder bridge is compared with a theoretical analysis representing the same structure as a planar grid. The structure evaluated is a three-girder bridge with a centerline span length and radius of 112.7 and 290 ft, respectively. Field measurements consisted of strains, deflections, rotations, and cross-section deformations in one span of the structure. Test results show that the experimental in-plane bending moments for dead and static live loads were approximately 86 percent of their respective theoretical values. Comparisons with the proportion of total load carried by the individual girder, however, were within 6 percent. The maximum live-load distribution factor for this structure is smaller than the value used in design of straight box-girder structures. Increased torsional stiffness resulting from the closely spaced internal diaphragms is believed to have caused this favorable effect.
Field Testing of Horizontally Curved Steel Girder Bridges
Experimentally determined response of a symmetrical, two-span, continuous, horizontally curved steel box-girder bridge is compared with a theoretical analysis representing the same structure as a planar grid. The structure evaluated is a three-girder bridge with a centerline span length and radius of 112.7 and 290 ft, respectively. Field measurements consisted of strains, deflections, rotations, and cross-section deformations in one span of the structure. Test results show that the experimental in-plane bending moments for dead and static live loads were approximately 86 percent of their respective theoretical values. Comparisons with the proportion of total load carried by the individual girder, however, were within 6 percent. The maximum live-load distribution factor for this structure is smaller than the value used in design of straight box-girder structures. Increased torsional stiffness resulting from the closely spaced internal diaphragms is believed to have caused this favorable effect.
Field Testing of Horizontally Curved Steel Girder Bridges
R. J. Kissane (author) / D. B. Beal (author)
1975
48 pages
Report
No indication
English