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http://dx.doi.org/10.12989/scs.2017.25.3.375

Mechanical behavior of elliptical concrete-filled steel tubular stub columns under axial loading  

Ding, Fa-xing (School of Civil Engineering, Central South University)
Ding, Xing-zhi (School of Civil Engineering, Central South University)
Liu, Xue-mei (Schoo of Civil Engineering and Built Environment, Queensland University of Technology)
Wang, Hai-bo (School of Civil Engineering, Central South University)
Yu, Zhi-wu (School of Civil Engineering, Central South University)
Fang, Chang-jing (School of Civil Engineering, Central South University)
Publication Information
Steel and Composite Structures / v.25, no.3, 2017 , pp. 375-388 More about this Journal
Abstract
This paper presents a combined experimental, numerical, and analytical study on elliptical concrete-filled steel tubular (E-CFT) and rebar-stiffened elliptical concrete-filled steel tubular (RE-CFT) subjected to axial loading. ABAQUS was used to establish 3D finite element (FE) models for the composite columns and the FE results agreed well with the experimental results. It was found that the ultimate load-bearing capacity of RE-CFT stub columns was 20% higher than that of the E-CFT stub columns. Such improvement was attributed to the reinforcement effects from the internal rebar-stiffeners, which effectively enhanced the confinement effect on the core concrete, thereby significantly improved both the ultimate bearing capacity and the ductility of the E-CFT columns. Based on the results, equations were also established in this paper to predict the bearing capacities of E-CFT and RE-CFT stub columns under axial loading. The predicted results agreed well with both experimental and numerical results, and had much higher accuracy than other available methods.
Keywords
rebar-stiffened; elliptical concrete-filled steel tubular (E-CFT); finite element analysis (FEA); Ultimate bearing capacity;
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Times Cited By KSCI : 3  (Citation Analysis)
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1 GB/T228-2010, China Standard (2010), Metallic materials-tensile testing at ambient temperatures, Standards Press of China, Beijing, China.
2 GB/T50081-2016, China Standard (2016), Standard for method of mechanical properties on ordinary concrete, China Building Industry Press, Beijing, China.
3 GB50017-2014, China Standard (2014), Code for design of steel structures, China Planning Press, Beijing, China.
4 Hibbitt, Karlson & Sorenson Inc. (2014), ABAQUS/standard User's Manual, Version 6.4.1., Pawtucket, RI, USA.
5 Hua, W., Wang, H.J. and Hasegawa, A. (2014), "Experimental study on reinforced concrete filled circular steel tubular columns", Steel Compos. Struct., 17(4), 517-533.   DOI
6 Eurocode 4, European Standard (2004), Design of composite steel and concrete structures-Part 1-1: General rules and rules for buildings, EN1994-1-1, European Committee for Standardization, Brussels, Belgium.
7 Park, J.W. and Choi, S.M. (2013), "Structural behavior of CFRP strengthened concrete-filled steel tubes columns under axial compression loads", Steel Compos. Struct., 14(5), 453-472.   DOI
8 Jamaluddin, N., Lam, D. and Dai, X.H. (2013), "An experimental study on elliptical concrete filled columns under axial compression", J. Constr. Steel Res., 87(8), 6-16.   DOI
9 Jiang, Z.G., Zhao, X. and Ren, Q.X. (2013), "Primary Analysis of Concrete-Filled Steel Tubular Slender Columns with Elliptical Section under Axial Compression", Adv. Mater. Res., 671-674, 736-739.   DOI
10 Li, H., Teng, J. and Li, Z. (2016), "Experimental study of damage evolution in cuboid stirrup-confined concrete", Mater. Struct., 49(7), 2857-2870.   DOI
11 Qiu, W., Mccann, F. and Espinos, A. (2017), "Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns", Eng. Struct., 131, 90-100.   DOI
12 Su, L., Wang, Y. and Cai, J. (2016), "Restoring Force Model of Concrete-Filled Square Steel Tubular Columns with Binding Bars", Open Civ. Eng. J., 10(1), 179-188.   DOI
13 Zha, X., Gong, G. and Liu, X. (2013), "Study on behavior of concrete filled elliptical steel tube members part I: short and long columns under axial compression", Adv. Steel Constr., 9(2), 90-107.
14 Uenaka, K. (2014), "Experimental study on concrete filled elliptical/oval steel tubular stub columns under compression", Thin. Wall. Struct., 78(70) , 131-137.   DOI
15 Wang, Z.B., Tao, Z. and Han, L.H. (2017), "Strength, stiffness and ductility of concrete-filled steel columns under axial compression", Eng. Struct., 135, 209-221.   DOI
16 Xiamuxi, A., Hasegawa, A. and Suzuki, T.(2011), "Compression test of RCFT columns with thin-walled steel tube and high strength concrete", Steel Compos. Struct., 11(5), 72_43-72_51.
17 Yang, H., Lam, D. and Gardner, L. (2008), "Testing and analysis of concrete-filled elliptical hollow sections", Eng. Struct., 30(37), 71-81.
18 Yang, Y, Wang, Y. and Fu, F. (2014), "Effect of reinforcement stiffeners on square concrete-filled steel tubular columns subjected to axial compressive load", Thin. Wall. Struct., 82(9), 132-144.   DOI
19 Zhao, X.L. and Packer, J.A. (2009), "Tests and design of concretefilled elliptical hollow section stub columns", Thin. Wall. Struct., 47(6-7), 617-28.   DOI
20 CSA-S16-09, Canadian Standard (2009), Steel structures for buildings (limit states design), CAN/CSA-S16-09, Canadian Standards Association, Toronto, Ontario, Canada.
21 Dai, X.H., Lam, D. and Jamaluddin, N. (2014), "Numerical analysis of slender elliptical concrete filled columns under axial compression", Steel Constr., 77(4), 26-35.
22 Dai, X. and Lam, D. (2010), "Numerical modeling of the axial compressive behavior of short concrete-filled elliptical steel columns", J. Const. Struct. Res., 66(7), 931-942.   DOI
23 Ding, F.X., Fang, C.J. and Bai, Y. (2014), "Mechanical performance of stirrup-confined concrete-filled steel tubular stub columns under axial loading", J. Constr. Steel Res., 98(7), 146-157.   DOI
24 Ding, F.X., Ying, X.Y. and Zhou, L.C. (2011a), "Unified calculation method and its application in determining the uniaxial mechanical properties of concrete", Front. Archit. Civ. Eng., China, 5(3), 381-393.   DOI
25 Ding, F.X., Yu, Z.W. and Bai, Y. (2011b), "Elasto-plastic analysis of circular concrete-filled steel tube stub columns", J. Constr. Steel Res., 67(10), 1567-1577.   DOI
26 EN 10210, European Standard (2006a), Hot finished structural hollow sections of non-alloy and fine grain steels-Part 1: Technical delivery conditions, EN 10210-1:2006(E), European Committee for Standardization, Brussels, Belgium.
27 EN 10210, European Standard (2006b), Hot finished structural hollow sections of non-alloy and fine grain steels-Part 2: Tolerances, dimensions and sectional properties, EN 10210- 2:2006(E), European Committee for Standardization, Brussels, Belgium.