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Title:Behavior of Reinforced Concrete Frames with Masonry Infills
Author(s):Angel, R.; Abrams, Daniel P.; Shapiro, D.; Uzarski, J.; Webster, M.
Subject(s):Masonry infills
Reinforced concrete.
Abstract:This report provides a summary of a combined experimental and analytical research project that investigated the loss of transverse (out-of-plane) strength for un reinforced masonry infill panels as a result of in -plane cracking. Large-scale test panels were constructed and subjected to repeated and reversed horizontal forces applied parallel with their plane to a lateral drift equal to twice that at initial cracking. Then, they were subjected to monotonically increasing transverse pressures with an air bag until their ultimate strengths were developed. Selected test panels were then repaired and retested. Test specimens consisted of either clay-unit or concrete masonry infills placed in a single-bay, single-story reinforced concrete frame. Parameters of the experimental sequence were the masonry-unit type, the mortar type, and the height-to-thickness ratio of the infill panel. An analytical model was developed to predict the out-of-plane behavior and strength of masonry panels with and without previous in -plane damage. The analytical model was based on an arching action theory. Analytical model parameters included the masonry compressive strength, the infill slenderness ratio, and the extent of in -plane damage. Based on the analytical model and on the supporting experimental results, recommendations were developed for practical seismic evaluation and rehabilitation of cracked unreinforced masonry infill panels loaded normal to their plane.
Issue Date:1994-03
Publisher:University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Civil Engineering Studies SRS-589
Genre:Technical Report
Sponsor:National Science Foundation Grants BCS 90-16875 and BCS 90-16509
Date Available in IDEALS:2009-11-12
Identifier in Online Catalog:3725347

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