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http://dx.doi.org/10.7781/kjoss.2012.24.6.735

Concentrated Axial Loading Test for Slender Square Hollow Section Retrofitted by Carbon Fiber Reinforced Polymer Sheets(CFRP Sheets)  

Park, Jai Woo (Dept. of Construction, Gayoon Construction, Co., Ltd.)
Choi, Sun Kyu (Sunyoung Architects & Engineering Consultants)
Choi, Sung Mo (Dept. of Architectural Engineering, University of Seoul)
Song, Dong Yub (Dept. of Architecture, Korea Infrastructure Safety Corporation)
Yoo, Jung Han (School of Architecture, Seoul National University of Science & Technology)
Publication Information
Journal of Korean Society of Steel Construction / v.24, no.6, 2012 , pp. 735-742 More about this Journal
Abstract
This paper presents the experimental results of axially loaded stub columns of slender steel hollow square section(SHS) strengthened with carbon fiber reinforced polymers(CFRP) sheets. 6 specimens were fabricated and the main parameters were: width-thickness ratio(b/t) and CFRP retrofitting. From the tests, it was observed that two sides would typically buckle outward and the other two sides would buckle inward. A maximum increase of 33% was achieved in axial-load capacity. Also, stiffness and ductility index(DI) were compared between unretrofitted specimens and retrofitted specimens. In the last section, a prediction formula of the ultimate strength developed using the experimental results is presented.
Keywords
carbon fiber sheet; CFRP; steel hollow section(SHS); slender section; retrofit; elastic buckling; effective width;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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