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http://dx.doi.org/10.11112/jksmi.2019.23.3.143

Experimental study on the Flexural Capacity of U-shape Composite Beam  

Ha, Sang-Su (Division of Real Estate and Construction Engineering(Major in Urban Planning and Architecture Engineering))
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.23, no.3, 2019 , pp. 143-149 More about this Journal
Abstract
In this study, a U-shape composite beam was developed to be effectively used for a steel parking lot which is 8m or lower in height. When the U-shape composite beam was applied to a steel parking lot, essential considerations were story-height and long-span. In addition, due to the mixed structural system with reinforced concrete and steel material, the U-shape composite beam needed to have a structural integrity and reliable performance over demand capacity. The main objective of this study was to investigate the performance of the structure consisting of the reinforced concrete (RC) slab and U-shape beam. A U-shape composite beam generally used at a parking lot served as a control specimen. Four specimens were tested under four-point bending. To calculate theoretical values, strain gauges were attached to rebar, steel plate, and concrete surface in the middle of the specimens. As the results, initial yielding strength of the control specimen occurred at the bottom of the U-shaped steel. After yielding, the specimen reached the maximum strength and the RC slab concrete was finally failed by concrete crush due to compressive stress. The structural performance such as flexural strength and ductility of the specimen with the increased beam depth was significantly improved in comparison with the control specimen. Furthermore, the design of the U-shape composite beam with the consideration of flexural strength and ductility was effective since the structural performance by a negative loading was relatively decreased but the ductile behavior was evidently improved.
Keywords
U-shape composite beam; Story-height; Long-span; Structural integrity; Structural performance; Flexural performance; Ductility;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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