Flexural stiffness of the composite steel and fibre-reinforced concrete circular hollow section column

FIBRE CONCRETE 2017

Tretyakov, A.^1 ; Tkalenko, I.^1 ; Wald, F.^1 ; Novak, J.^2 ; Stefan, R.^2 ; Kohoutková, A.^2

Czech Technical University in Prague, Dept. of Steel and Timber Structures, Czech Republic^1

Czech Technical University in Prague, Dept. of Concrete and Masonry Structures, Czech Republic^2

关键词: Circular hollow section;    Composite steel concrete;    Concrete filled tubes;    European Standards;    Fibre reinforced concrete;    Mechanical behaviour;    Production and transportations;    Steel fibre reinforced concrete;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/246/1/012021/pdf
DOI  :  10.1088/1757-899X/246/1/012021

来源: IOP

【 摘 要 】

The recent development in technology of production and transportation of steel fibre-reinforced concrete enables its utilization in composite steel-concrete structures. This work is a part of a project which focuses on development of mechanical behaviour of circular hollow section (CHS) composite steel and fibre-concrete (SFRC) columns at elevate temperature. Research includes two levels of accuracy/complexity, allowing simplified or advanced approach for design that follows upcoming changes in European standard for composite member design in fire EN1994-1-2 [1]. One part is dedicated to determination and description of flexural stiffness of the SFRC CHS columns. To determinate flexural stiffness were prepared series of pure bending tests at elevated and ambient temperature. Presented paper focuses on the results of the tests and determination of flexural stiffness at ambient temperature. Obtained outputs were compared to data of existing studies about concrete-filled tube members with plain concrete and values analytically calculated according to the existing European standard EN1994-1-1 [2].