Top Lateral Bracing of Steel U-Shaped Girders

摘要

This research report describes the analytical and experimental tests conducted on steel U-shaped girders with top-flange lateral bracing. The scope of the study focused on X-type top lateral truss systems. A series of pilot tests were also conducted to evaluate the performance of girders with metal deck panels used as a top lateral bracing system. Results include girder buckling loads, buckled shapes, brace forces, and girder torsional stiffnesses. Deficiencies in current code specifications are also discussed.