Accession Number : ADB027935

Title :   The Effects of High Intensity Impulse Loading on Reinforced Concrete Beams.

Descriptive Note : Final rept. Jan 73-May 76,

Corporate Author : OKLAHOMA STATE UNIV STILLWATER SCHOOL OF CIVIL ENGINEERING

Personal Author(s) : Ingram, J. Nelson ; Kelly, Allen E. ; Lloyd, John P.

Report Date : JUN 1976

Pagination or Media Count : 160

Abstract : Results of a study of the response of impulse loaded reinforced concrete beams are presented. The objectives were to develop basic data of the blast-structural response phenomenon for the evaluation of structural survivability, and to compare these data with results of digital computer program, IMPBC, a simulation of the blast-structure interaction. The study included the definition of failure and a method for assessing damage due to blast loading. The reinforced concrete beams were full-sized representations of members found in buildings. There were twelve impulse tests, of which seven were performed on identical beams for which the material properties and steel percentage were typical of average construction practice. The remaining five were of beams having high strength concrete (two tests), high strength steel (one test), and greater steel percentage (two tests). Impulse loading was obtained from the detonation of 214-pound spherical pentolite charges suspended above the beams. The high strength concrete beams exhibited the greatest resistance to damage from impulse loading. These members experienced little distress while the members with increased steel area and greater moment capacity suffered the greater damage. This was predicted by the damage criterion presented in this report.

Descriptors :   *BEAMS(STRUCTURAL), *REINFORCED CONCRETE, *IMPULSE LOADING, *COMPUTERIZED SIMULATION, BLAST LOADS, SURVIVAL(GENERAL), VULNERABILITY, PENTOLITE, SPHERES, STRUCTURAL RESPONSE, MATHEMATICAL MODELS.

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE