Compressed Concrete-Filled Steel Tube Elements with Indirect Reinforcement of the Concrete Core

International Multi-Conference on Industrial Engineering and Modern technologies

Chernyshova, E.P.^1 ; Astafeva, M.A.^2 ; Sagadatov, A.I.^2

Design Department, Nosov Magnitogorsk State Technical University, 11 Uritsky Street, Magnitogorsk

455000, Russia^1

Department of Building Design and Constructions, Nosov Magnitogorsk State Technical University, 11 Uritsky Street, Magnitogorsk

455000, Russia^2

关键词: Concrete filled steel tube;    Concrete filled steel tube columns;    Force resistance;    High strength concretes;    Longitudinal deformation;    Reinforcement effects;    Spiral reinforcements;    Square-section concrete;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/463/4/042062/pdf
DOI  :  10.1088/1757-899X/463/4/042062

来源: IOP

【 摘 要 】

The purpose hereof is to study the specifics of the force resistance and to experimentally identify the reinforcement effect of short square-section concrete-filled steel tube elements (CFSTE) with spiral reinforcement. Analysis of the laboratory samples of concrete-filled steel tube columns shows that spiral reinforcement makes them stronger by 18÷43% depending on the source concrete class. Maximum recorded longitudinal deformation in spiral-reinforced samples is 1.7÷2 times larger. Using a relatively small amount of spiral reinforcement (about 1%) has resulted in a mean 23% stronger reinforcement effect in the studied structures. Such structures remain efficient when using high-strength concrete.