Techno Press


Steel and Composite Structures   Volume 18, Number 6, June 2015, pages 1451-1464
DOI: http://dx.doi.org/10.12989/scs.2015.18.6.1451
 
A study on the structural performance of new shape built-up square column under concentric axial load
Sun-Hee Kim, Kyong-Soo Yom and Sung-Mo Choi

 
Abstract     [Full Text]
    Recently, in recognition of their outstanding structural performance, the use of Concrete Filled Steel Tube (CFT) columns has been increased. New shape welded built-up square tube was developed by the authors for broader usability using thin steel plates which were bent to be L-shaped (Channel) and each unit members were welded to form square steel tube as an cost-efficient use of expensive steel. In addition, since the rib placed at the center of the tube width acts as an anchor; higher load capacity of buckling is achievable. In order to apply the new shape built-up square columns, the structural behavior and stress distribution with parameter width of thickness (b/t), with and without rib were predicted. The New shape welded built-up square tube effectively delayed the local buckling of the steel tube, which led to a greater strength and ductility than regular HSS.
 
Key Words
    built-up square column; composite effect; width of thickness; concentric axial load
 
Address
(1) Sun-Hee Kim, Sung-Mo Choi:
Department of Architectural Engineering, University of Seoul, Cheonnong-dong 90, Dongdaemun-Gu, Seoul, 130-743, Republic of Korea;
(2) Kyong-Soo Yom:
Harmony Engineering, Guro-Gu Seoul 152-051, Republic of Korea.
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2019 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: technop@chol.com