Repetitive Dynamic Loading on Pretensioned Prestressed Beams


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Title: Repetitive Dynamic Loading on Pretensioned Prestressed Beams

Author(s): Bruce C. Coles and Wayne A. Hamilton

Publication: Journal Proceedings

Volume: 66

Issue: 9

Appears on pages(s): 745-747

Keywords: beams (supports) ; blast loads; bond (concrete to reinforcement) ; cyclic loads; dynamic loads; prestressed concrete; pretensioning; research.

Date: 9/1/1969

Eight pretensioned concrete beams were subjected to repetitions of highly impulsive load until the occurrence of a compressive failure. The number of applications of the dynamic load varied from five to seven. The results of this study indicated that the calculated ultimate static load is a satisfactory design criterion for a beam subjected to a low number of blast-type loadings. Bond failure does not appear to be a critical factor.