Experimental study on concrete filled elliptical/oval steel tubular stub columns under compression

被引：84
作者：
Uenaka, Kojiro [1 ]
机构：
[1] Kobe City Coll Technol, Dept Civil Engn, Nishi Ku, Kobe, Hyogo 6512194, Japan
来源：
THIN-WALLED STRUCTURES | 2014年 / 78卷
关键词：
Concrete filled elliptical/oval steel tubular member; Concrete filled steel tubular member; Centric compressive loading test; Diameter-to-thickness ratio; Axial loading capacity; Confinement effect; BEHAVIOR;
D O I：
10.1016/j.tws.2014.01.023
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A concrete filled elliptical/oval steel tubular (CFEST) member consists of elliptical/oval steel tube and in-filled concrete. The CFEST member is a new type of steel-concrete composite member and is part of a family of concrete filled steel tubular members known as CFT. The present study aims to investigate, experimentally, the characteristics of CFEST stub columns under centric loading. The main test parameters selected are diameter-to-thickness and diameters ratios of elliptical/oval steel tube. From the results, local buckling of the elliptical/oval steel tube associated with shear failure of in-filled concrete could be observed. Axial loading capacity decreased as diameter-to-thickness ratio increased. Whereas, those capacities normalized by the summation of the individual strengths, namely the elliptical/oval steel tube and in-filled concrete strengths, are regulated in case the diameter-to-thickness ratio becomes larger. Finally, a method to predict the axial loading capacity induced by confinement effects of the in-filled concrete is proposed. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：131 / 137
页数：7
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