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http://dx.doi.org/10.7781/kjoss.2013.25.3.299

Behaviors of Long Square Hollow Section Columns Retrofitted using Carbon Fiber Reinforced Polymer Sheets(CFRP Sheets) Subjected to Concentrated Axial Loading  

Park, Jai Woo (Dept. of Construction, Gayoon Construction, Co., Ltd.)
Choi, Sun Kyu (Sunyoung Architects & Engineering Consultants)
Yoo, Jung Han (School of Architecture, Seoul National University of Science & Technology)
Publication Information
Journal of Korean Society of Steel Construction / v.25, no.3, 2013 , pp. 299-305 More about this Journal
Abstract
This paper presents the experimental results of behacior of slender square hollow section columns strengthened with carbon fiber reinforced polymers (CFRP) sheets subjected to concentrated axial loading. Three long specimens were fabricated and one stub column were fabricated. The main parameters were the number of CFRP layers. From the tests, it was observed that global buckling were occurred at the center of specimen for unretrofitting slender column. However, CFRP retrofitting could prevent the global buckling of slender column. Maximum increase of 22% was also achieved in axial-load capacity with three longitudinal layered CFRP applied on four sides of steel tubes.
Keywords
carbon fiber sheet; CFRP; steel hollow section(SHS); long column; retrofit;
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Times Cited By KSCI : 1  (Citation Analysis)
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