BLAST LOADING OF CONCRETE BEAMS REINFORCED WITH HIGH-STRENGTH DEFORMED BARS,
NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA
Pagination or Media Count:
A theoretical study and a series of beam tests were made on concrete members reinforced with high-strength deformed bars. The influence of 1 the amount, yield strength and ductility of the tensile steel and 2 the amount, location and yield strength of the compression steel on the strength and ductility of a concrete beam is discussed. Then, the influence of the amount and yield strength of tensile steel on the stiffness of a beam is presented. The minimum yield-load factor ratio of the beams static yield resist to the static service load required to limit deflections to any given amount is presented as an equation and is plotted for various span-to-depth ratios. In the tests, sixteen simply supported concrete beams reinforced with high-strength deformed bars 91,600 psi yield stress were subjected to static and dynamic uniform loads and their behavior observed. Eight beams were conventionally reinforced, and eight were partially prestressed. Both types of beams were subjected to long- and short-duration loads. Several beams were loaded dynamically more than once to determine their resilience and to study the problem of multiple-shot damage.
- Structural Engineering and Building Technology