Finite element analysis on the capacity of circular concrete-filled double-skin steel tubular (CFDST) stub columns

Pagoulatou, M.; Sheehan, Therese; Dai, Xuewu; Lam, Dennis

doi:10.1016/j.engstruct.2014.04.039

Cited by 231 publications

(101 citation statements)

References 19 publications

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“…(8). This capacity equation is also recommended in by Pagoulatou et al (2014) [22] for CFDST with CHS as inner and outer steel tubes. In square crosssections, the confinement action within the cross-section is not effective and therefore, enhancement (η c ) and reduction factor (η s ) for concrete and steel strength respectively is specified as zero and unity.…”

Section: Ec4mentioning

confidence: 96%

Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns

Sulthana

Jayachandran

2017

Structures

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Section: Ec4mentioning

confidence: 96%

Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns

Sulthana

Jayachandran

2017

Structures

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“…where t is tensile stress, c is compressive stress, t0 is tensile strength, cu is compressive strength, E c is module of elasticity of concrete, " t is tensile strain, " c is compressive strain, and n t = 1, n c = 2 [15].…”

Section: Finite-element Modeling and Analysismentioning

confidence: 99%

“…Figure 5 [14] shows the typical stress-strain curve of concrete for both tension and compression and the e ects of damage parameters on the sti ness in recycle loading. d (d t : tensile damage and d c : compressive damage) parameter was computed by the following equation [15]:…”

Section: Finite-element Modeling and Analysismentioning

confidence: 99%

Experimental and Numerical Study on a Proposed Moment-Resisting Connection for Precast Concrete Frames

et al. 2017

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Abstract. This paper presents the test results of a proposed ductile moment-resisting beam-column connection for precast concrete frames and a developed 3D nonlinear niteelement model of this connection featuring several di erent details to predict its behavior under cyclic loading based on the loading of ACI T1.1-01. In this connection, precast concrete beam and column are connected to each other by steel linkage element. This method is able to create concrete structures of higher quality by minimizing in-situ concreting, maximizing the speed of construction, and using ductile and exchangeable elements in sensible locations of the connection. Two types of bolted and welded connections were compared with the monolithic connection in terms of sti ness, strength, energy dissipation capacity, and ductility factor. All specimens satis ed all criteria of ACI T1.1-01. To investigate the behavior of these connections, a 3D nonlinear nite-element model was simulated. Numerical results showed good agreement with experimental results. The initial sti ness of monolithic connection specimen was greater than that of bolted connection and welded connection specimens. Even though the beam's moment capacity of the two welded and bolted samples was slightly more than that of monolithic sample, the ductility factors in these samples were slightly less than those in monolithic sample.

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“…Computational models have been presented for the inelastic analysis of eccentrically loaded CFST slender columns fabricated by high-strength materials [29][30][31][32][33][34][35][36][37][38]. However, the strength and behavior of eccentrically loaded circular high-strength CFSST slender columns have not been investigated by inelastic analysis procedures.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear analysis of circular high strength concrete-filled stainless steel tubular slender beam-columns

Patel

Liang

Hadi

2017

Engineering Structures

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Nonlinear analysis of circular high strength concrete-filled stainless steel tubular slender beam-columns AbstractConcrete-filled stainless steel tubular (CFSST) slender columns are increasingly used in composite structures owing to their distinguished features, such as aesthetic appearance, high corrosion resistance, high durability and ease of maintenance. Currently, however, there is a lack of an accurate and efficient numerical model that can be utilized to determine the performance of circular CFSST slender columns. This paper describes a nonlinear fiber-based model proposed for computing the deflection and axial load-moment strength interaction responses of eccentrically loaded circular high-strength CFSST slender columns. The fiber-based model incorporates the accurate three-stage stress-strain relations of stainless steels, accounting for different strain hardening characteristics in tension and compression. The material and geometric nonlinearities as well as concrete confinement are included in the computational procedures. Existing experimental results on axially loaded CFSST slender columns are utilized to verify the proposed fiber-based model. A parametric study is conducted to examine the performance of high-strength slender CFSST beam-columns with various geometric and material parameters. It is shown that the fiber-based analysis technique developed can accurately capture the experimentally observed performance of circular high-strength CFSST slender columns. The results obtained indicate that increasing the eccentricity ratio, column slenderness ratio and diameter-to-thickness ratio remarkably decreases the initial flexural stiffness and ultimate axial strength of CFSST columns, but considerably increases their displacement ductility. Moreover, an increase in concrete compressive strength increases the flexural stiffness and ultimate axial strength of CFSST columns; however, it decreases their ductility. Furthermore, the ultimate axial strength of CFST slender columns is found to increase by using stainless steel tubes with higher proof stresses. decreases their ductility. Furthermore, the ultimate axial strength of CFST slender columns is found to increase by using stainless steel tubes with higher proof stresses.

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Finite element analysis on the capacity of circular concrete-filled double-skin steel tubular (CFDST) stub columns

Cited by 231 publications

References 19 publications

Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns

Axial Compression Behaviour of Long Concrete Filled Double Skinned Steel Tubular Columns

Experimental and Numerical Study on a Proposed Moment-Resisting Connection for Precast Concrete Frames

Nonlinear analysis of circular high strength concrete-filled stainless steel tubular slender beam-columns

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