Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (2): 272-277.DOI: 10.12068/j.issn.1005-3026.2018.02.024

• Resources & Civil Engineering • Previous Articles     Next Articles

Experimental Investigation on Channel Columns with Complex Edge Stiffeners and Cap Shaped Stiffeners Under Eccentric Compression

SONG Bo1, WANG Lian-guang1, WANG Chun-gang2   

  1. 1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China; 2. Civil Engineering College, Shenyang Jianzhu University, Shenyang 110168, China.
  • Received:2016-08-12 Revised:2016-08-12 Online:2018-02-15 Published:2018-02-09
  • Contact: SONG Bo
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Abstract: Eighteen simply supported eccentric compression specimens were tested to investigate the ultimate bearing capacity, instability mode, and deformation of three types of complex edge stiffened channels, including no stiffeners, intermediate cap shaped stiffeners in the web, intermediate cap shaped stiffeners in the web and the flanges. Results show that offset of the effective centroid has a significant effect on the bearing capacity of eccentric compressed members. Cap shaped stiffeners can effectively reduce the width-to-thickness ratio of the element and obviously increase the ultimate load bearing capacity as well as the steel utilization ratio of elements, but distortional buckling can become the dominate failure mode. Under the same conditions, the load bearing efficiency of plate with intermediate cap shaped stiffeners is improved by 15%~70%.

Key words: channel with complex edge stiffener, cap shaped stiffener, ultimate bearing capacity, instability mode, shift of effective centroid

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