Behavior of Eccentrically Loaded Concrete-Filled Steel Tubular Columns

Fujimoto, Toshiaki; Mukai, Atsushi; Nishiyama, Isao; Sakino, Kenji

doi:10.1061/(asce)0733-9445(2004)130:2(203)

Cited by 167 publications

(77 citation statements)

References 1 publication

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“…However, as discussed by Fujimoto et al [43] and Gardner et al [44], with increasing applied load, the lateral deformation of the specimen generates second order bending moments. Therefore, in order to evaluate the second order bending moments, the lateral deflections in both principal directions were measured by means of two string potentiometers, which were affixed to the specimens at mid-height.…”

Section: Combined Loading Testsmentioning

confidence: 95%

Behaviour of structural stainless steel cross-sections under combined loading – Part I: Experimental study

Zhao

Rossi

Gardner

et al. 2015

Engineering Structures

119

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Stainless steel has been gaining increasing use in a variety of engineering applications due to its unique combination of mechanical properties, durability and aesthetics. Significant progress in the development of structural design guidance has been made in recent years, underpinned by sound research. However, an area that has remained relatively unexplored is that of combined loading. Testing and analysis of stainless steel cross-sections under combined axial load and bending is therefore the subject of the present paper and the companion paper [1]. The experimental programme covers both austenitic and duplex stainless steels, and five cross-section sizes including three square hollow sections (SHS) and two rectangular hollow sections (RHS). In total, five stub column tests, five four-point bending tests, 20 uniaxial bending plus compression tests and four biaxial bending plus compression tests were carried out to investigate the cross-sectional behaviour of stainless steel tubular sections under combined loading. The initial loading eccentricities for the Zhao, O., Rossi, B., Gardner, L., & Young, B. (2015). Behaviour of structural stainless steel cross-sections under combined loading -Part I: Experimental study. Engineering Structures, 89, 236-246. Improved design rules for stainless steel cross-sections under combined loading are also sought through extension of the deformation-based Continuous Strength Method (CSM).

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Section: Combined Loading Testsmentioning

confidence: 95%

Behaviour of structural stainless steel cross-sections under combined loading – Part I: Experimental study

Zhao

Rossi

Gardner

et al. 2015

Engineering Structures

119

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show abstract

“…RCFT기둥의 단주압축강도에 대한 Liu [11] , Liu 등 [12] 과 Liu와 Gho [13] 의 결과와 합치한다(Furlong [8] , Gourley 등 [9] , Schneider [16] ).…”

Section: 단주 압축강도unclassified

Constitutive Relation of Concrete to Predict P-M Interaction Strength of Rectangular CFT Short Columns

Lee

Kang²,

Kim³

2015

Journal of Korean Society of Steel Construction

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-The plastic stress distribution method and the strain compatibility method are the two representative methods to calculate the P-M interaction strength of RCFT (rectangular concrete filled tube) columns. The plastic stress distribution method is approximate while the stress compatibility method should approach the exact solution if accurate constitutive relations of the materials involved are used. Recent study by the authors pointed out that, because of lack of accurate constitutive model for the concrete confined by the rectangular steel tube, no strain compatibility method according to the current structural provisions provides a satisfactory prediction of the P-M interaction strength of RCFT columns under various material combinations. An empirical constitutive model which can capture the stress-strain characteristics of the confined concrete of RCFT columns is proposed based on analyzing extensive exisitng test database. The key idea was to define the concrete crushing strain as a function of steel-to-concrete strength ratio and width-to-thickness ratio of steel tube. It was shown that the proposed model leads to more accurate and more consistent prediction of the P-M interaction strength of RCFT columns under general design conditions.

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“…There have been many experimental studies on the behaviour of circular CFST columns, which can be classified as columns subjected to constant eccentricity with increasing moment and axial load (Kilpatrick and Rangan, 1999;Lee et al, 2011;Muciaccia et al, 2011;O'Shea and Bridge, 2000;Portoles et al, 2011Portoles et al, , 2013 and columns subjected to constant axial load and increasing moment with constant axial load (Fujimoto et al, 2004;Inai et al, 2004;Prion and Boehme, 1994). In an eccentrically loaded specimen, axial and flexural deformations will increase as the axial load increases whereas in the second type of test specimen, axial deformation has been exerted upon the column before flexure starts to rise.…”

Section: Introductionmentioning

confidence: 99%

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

Ouyang¹,

2014

Magazine of Concrete Research

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The existence of curvature can reduce the effective confining pressure within concrete-filled steel tube (CFST) columns under eccentric compression. The existing analysis method ignores such an effect and still treats the confining pressure as constant across the whole section as if it is under axial compression. In this paper, the authors have made significant improvements on the existing model, so that the curvature effect can be taken into account to properly interpret the non-linear behaviour of eccentrically loaded CFST columns. Meanwhile, shortening between two hinges is an important data output in test programmes of this type, which has been completely neglected by the existing analysis method. This improved method also provides calculation steps to track the value of shortening for each load increment. Unknown parameters in this new method are determined on the basis of data fitting of 87 specimens from previous researchers' test programmes. The following parameters are incorporated in this study: effective tube length (660–4670 mm), diameter of tube (76–600 mm), tube thickness (1·52–8·81 mm), yield strength of tube (256·4–517·0 MPa), cylinder strength of concrete (26·42–112·70 MPa) and eccentricity (9·4–300 mm). The load–axial displacement, load–deflection and moment–curvature curves predicted by the new method agree well with their measured counterparts in the tests.

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Behavior of Eccentrically Loaded Concrete-Filled Steel Tubular Columns

Cited by 167 publications

References 1 publication

Behaviour of structural stainless steel cross-sections under combined loading – Part I: Experimental study

Behaviour of structural stainless steel cross-sections under combined loading – Part I: Experimental study

Constitutive Relation of Concrete to Predict P-M Interaction Strength of Rectangular CFT Short Columns

Curvature-relevant analysis of eccentrically loaded circular concrete-filled steel tube columns

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