Experimental Investigation on the Axially Loaded Performance of Notched Hexagonal Concrete-Filled Steel Tube (CFST) Column

被引：6
|
作者：
Liu, Jing [1 ,2 ]
Li, Zhe [3 ]
Ding, Fa-Xing [2 ]
机构：
[1] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China
[2] Cent S Univ, Sch Civil Engn, Changsha 410075, Hunan, Peoples R China
[3] Cent S Univ, Sch Architecture & Art, Changsha 410075, Hunan, Peoples R China
来源：
ADVANCES IN CIVIL ENGINEERING | 2019年 / 2019卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
TUBULAR STUB COLUMNS; MECHANICAL-BEHAVIOR; ENERGY-ABSORPTION; COMPOSITE ACTION; MEMBERS;
D O I：
10.1155/2019/2612536
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This study aimed to investigate the static performance of notched hexagonal concrete-filled steel tube (CFST) stub columns through axial loading. Notch length, notch location, and notch direction in 14 CFST stub columns were experimentally studied. Stress process, failure mechanism, and ultimate strength in the notched CFST columns were analyzed. Results show that notches in steel tubes can weaken the restraining effect of steel pipes on core concrete and induce a decrease in the ultimate strength of specimens. The failure mode of components is greatly affected by notch orientation. The notch is closed under axial compression in the horizontally notched specimen, and the slotting indicates outward buckling in the vertically notched specimen. Based on the test results, a method for calculating the ultimate strength of notched hexagonal CFST columns was established. This research encourages the extensive application of these structures in civil engineering.
引用
收藏
页数：9
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