Cyclic Load Tests of Composite P restressed-Reinforced Concrete Panels.

摘要

Static and cyclic load tests made on seven composite panels of prestressed concrete and cast-in-place concrete are described. The Prestressed panels are used as stay-in-place forms for concrete bridge decks. Reinforced concrete bonds to the top surface of the prestressed panels. The unit acts compositely under traffic loads. Some of the test panels contained an interlocking shear lug which was cast in the prestressed panel and was engaged by the cast-in-place concrete. Others had no such lugs. Panels with the shear lugs showed a slight advantage in stiffness over the others at high loads. Panels with shear lugs were cycled under 210percent of design load for 11.9million load cycles without failure. Panels without shear lugs reached failure deflection, 1/4in. at 2.25million cycles under 210percent of design load.