Diaphragms for Curved Box Beam Bridges

by James C. Oleinik, (A.M.ASCE), Engr.; Bechtel Corp., Gaithersburg, Md.; formerly, Grad. Research Asst., Civ. Engrg. Dept., Univ. of Maryland, College Park, Md.,
Conrad P. Heins, (M.ASCE), Assoc. Prof.; Civ. Engrg. Dept., Univ. of Maryland, College Park, Md.,


Serial Information: Journal of the Structural Division, 1975, Vol. 101, Issue 10, Pg. 2161-2178


Document Type: Journal Paper

Abstract: A finite difference procedure is used to determine the response of a single span curved single box beam bridge with any number of interior diaphragms. The bending and torsional distortions as well as cross-sectional distortions can then be determined throughout the curved box girder. The forces that are determined include bending moment and shear, pure torsion, warping torsion, and bimoment. These forces, in addition to distortional functions, yield resulting normal bending, normal warping, and normal distortional stresses. The technique is then used to determine the dead-load and live-load response of a series of typical curved box beams. A study of the data has resulted in a series of empirical design equations.

Subject Headings: Curved beams | Distortion (structural) | Box beams | Torsion | Bridge components | Diaphragms (structural) | Bending (structural) | Warpage

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