Analysis of Axial Bearing Capacity of Three Times Cold-formed Thin-walled Lipped Channel Column with Holes
Yin Lingfeng,Xu Zhenglin,Huang Hui,Hong Dangping and Tang Gan
DOI:10.11835/j.issn.1674-4764.2013.03.013
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2013,Pages 81-87
- Abstract
Axial bearing capacity of three times cold-formed thin-walled lipped channel short column with holes was studied and calculated by finite element software ANSYS. The comparative analysis was carried out to the ANSYS, Chinese code and North America code to make out the influence of hole on the bearing capacity of the column. The results show that distortional buckling appears in the failure mode of axial compression column. Effective width method in Chinese code indirectly considers the impact of distortional buckling, and it has a good agreement with the results of North America code. Holes obviously decrease the axial bearing capacity of the column, and the variation is not according with conventional axial compression member. Opening reduction to the carrying capacity of three times cold-formed thin-walled lipped channel should be emphasised in design. Reduction factor can be taken as K=2.41×10 -5λ 2-3.78×10 -3λ+9.59×10 -2 to cross-section of the article.