Seismic Behavior of Hollow-Core FRP-Concrete-Steel Bridge Columns

被引：0
|
作者：
Abdelkarim, Omar I. [1 ]
Gheni, Ahmed [1 ]
Anumolu, Sujith [1 ]
ElGawady, Mohamed A. [1 ]
机构：
[1] Missouri Univ Sci & Technol, Civil Architectural & Environm Engn Dept, Rolla, MO 65409 USA
来源：
Structures Congress 2015 | 2015年
关键词：
PIERS; PERFORMANCE; TUBES;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents the behavior of precast hollow-core fiber reinforced polymer (FRP)-concrete-steel tubular columns (HC-FCS) under combined axial and lateral loading. The HC-FCS column consisted of a concrete wall sandwiched between an outer FRP tube and an inner steel tube. Two large scale columns, RC-column and HC-FCS column were investigated during this study. The steel tube of the HC-FCS column was embedded into the footing while the FRP tube was stopped at the top of the footing level, i.e., the FRP tube provided confinement only. The hollow steel tube is the only reinforcement for shear and flexure inside the HC-FCS column. The FRP in HC-FCS ruptured at lateral drift of 15.2% while the RC-column displayed 10.9% lateral drift at failure. The RC-column failed due to rebar rupture and the moment capacity suddenly dropped more than 20% after that. However, the HC-FCS suffered gradual failure due to concrete crushing, steel local buckling and yielding, followed by FRP rupture.
引用
收藏
页码：585 / 596
页数：12
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