Simplified Nonlinear Simulation of Rectangular Concrete-Filled Steel Tubular Columns

doi:10.1061/(ASCE)ST.1943-541X.0003021

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Simplified Nonlinear Simulation of Rectangular Concrete-Filled Steel Tubular Columns
	Tao, Zhong 1; Katwal, Utsab 2; Uy, Brian 2; Wang, Wen-Da 3
刊名	JOURNAL OF STRUCTURAL ENGINEERING
	2021
卷号	147 期号:6
关键词	Concrete-filled steel tubes (CFST) Simplified simulation Fiber beam element model Concrete confinement Local buckling Size effect
ISSN号	0733-9445
DOI	10.1061/(ASCE)ST.1943-541X.0003021
英文摘要	In detailed three-dimensional (3D) finite-element modeling, two-dimensional and/or 3D elements are widely used because of their high accuracy and ease of use despite the high computational cost. In contrast, simplified modeling based on fiber beam element (FBE) formulation is preferred for developing macro models to simulate structural frames due to its simplicity and computational efficiency. As for the FBE simulation of concrete-filled steel tubular (CFST) columns, its accuracy largely depends on the input steel and concrete material models, which should implicitly consider the material nonlinearity and interaction between the steel and concrete components. The authors have previously developed a FBE model for circular CFST columns, and this paper is a continuation of the previous work. In this paper, uniaxial effective stress-strain relationships are developed for the steel and concrete materials in rectangular CFST columns based on rigorous analysis of data generated from 3D finite-element modeling of stub columns. Thus, the material models have implicitly considered the effects of yielding and local buckling of the steel tube and passive confinement to the concrete. Meanwhile, the size effect is also considered in the concrete model. The accuracy of the proposed material models is verified against a database of rectangular CFST stub columns covering a wide range of material and geometric parameters. The developed material models are further used to simulate rectangular CFST slender columns and beam-columns, and a reasonably good agreement is achieved between the experimental and predicted load-deformation curves. (C) 2021 American Society of Civil Engineers.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000652523000011
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148192]
专题	土木工程学院
作者单位	1.Western Sydney Univ, Ctr Infrastruct Engn, Penrith, NSW 2751, Australia; 2.Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia; 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Tao, Zhong,Katwal, Utsab,Uy, Brian,et al. Simplified Nonlinear Simulation of Rectangular Concrete-Filled Steel Tubular Columns[J]. JOURNAL OF STRUCTURAL ENGINEERING,2021,147(6).
APA	Tao, Zhong,Katwal, Utsab,Uy, Brian,&Wang, Wen-Da.(2021).Simplified Nonlinear Simulation of Rectangular Concrete-Filled Steel Tubular Columns.JOURNAL OF STRUCTURAL ENGINEERING,147(6).
MLA	Tao, Zhong,et al."Simplified Nonlinear Simulation of Rectangular Concrete-Filled Steel Tubular Columns".JOURNAL OF STRUCTURAL ENGINEERING 147.6(2021).