scholarly journals An experimental study on the local buckling strength of steel polygonal section stub columns.

1990 ◽  
pp. 255-263
Author(s):  
Yasuhiro MIGITA ◽  
Tetsuhiko AOKI ◽  
Yuhshi FUKUMOTO
Author(s):  
K. Sobajima ◽  
J. Nie ◽  
T. Miyashita ◽  
S. Okada ◽  
N. Takeshima ◽  
...  

2014 ◽  
Vol 82 ◽  
pp. 33-45 ◽  
Author(s):  
Weiyong Wang ◽  
Venkatesh Kodur ◽  
Xingcai Yang ◽  
Guoqiang Li

2012 ◽  
Vol 204-208 ◽  
pp. 899-902
Author(s):  
Young Bong Kwon ◽  
In Kyu Jeong ◽  
In Kyu Kwon

This paper describes design strength of concrete-filled tubular (CFT) section columns accounting for local buckling of steel skin. The local buckling has a negative effect on the ultimate compression strength based on the yield stress of steel skin and nominal compressive strength of in-filled concrete. A squash load formula for CFT stub columns is proposed to account for the post-local-buckling strength of steel skin. A compressive strength formula for filled-in concrete accounting for the confining effect of steel skin and strength ratio between filled-in concrete and steel skin is also proposed. The squash loads predicted by the proposed strength formula for the direct strength method were compared with the AISC (2010) and Eurocode4 (2004). The comparison showed that the squash load formula proposed can predict conservatively the squash load of circular and rectangular CFT columns with local buckling


2019 ◽  
Vol 12 (2) ◽  
pp. 82-90
Author(s):  
Jing Nie ◽  
Hikaru Sugimoto ◽  
Kiyoshi Ono ◽  
Takeshi Miyashita ◽  
Masahide Matsumura ◽  
...  

2011 ◽  
Vol 255-260 ◽  
pp. 198-203 ◽  
Author(s):  
Chayanon Hansapinyo

This paper presents an experimental study on the response of 18 concrete-filled cold-formed square hollow and double-C steel stub columns under cyclic and repeated loading. The test parameters were (1) infilled materials, i.e. No fill, concrete infilled and mortar infilled columns (2) cross sectional shape and dimension. The effect of lips in double-c section as inside stiffeners is presented. The cyclic tested results indicate the infilled columns possess higher bearing capacity, especially infilled materials with higher strength and non-compact section columns. However, there is no different in ultimate tensile. Moreover, the infilled columns showed larger area under post-yield hysteretic loops leading to better seismic performance. Failure of columns was modified in which the failure mode was shifted from the in-outward local buckling into the outward manner, consequently resulted to higher bearing capacity.


Structures ◽  
2021 ◽  
Vol 32 ◽  
pp. 433-447
Author(s):  
Qingxiong Wu ◽  
Zhimin She ◽  
Huihui Yuan

2011 ◽  
Vol 201-203 ◽  
pp. 2900-2903 ◽  
Author(s):  
Chui Huon Tina Ting ◽  
Hieng Ho Lau

Built-up sections are used to resist load induced in a structure when a single section is not sufficient to carry the design load for example roof trusses. In current North American Specification, the provision has been substantially taken from research in hot-rolled built-up members connected with bolts or welds [1]. The aim of this paper is to investigate on built-up back-to-back channels stub columns experimentally and theoretically using Effective Width Method and Direct Strength Method. Compression test was performed on 5 lipped channel and 5 back-to-back channels stub columns fabricated from cold-formed steel sheets of 1.2mm thicknesses. The test results indicated that local buckling is the dominant failure modes of stub columns. Therefore, Effective Width Method predicts the capacity of stub columns compared to Direct Strength Method. When compared to the average test results, results based on EWM are 5% higher while results based on DSM are 12% higher for stub column.


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