An Experimental Study on the Elasto-Plastic Behavior and Deformability of Concrete-Filled Tubular Truss Beam-Columns Under Cyclic Loading

Akihiko, Kawano; 昭彦, 河野; 千秋, 松井; Matsui, Chiaki; 良比呂, 崎野; Sakino, Yoshihiro

doi:10.3130/aijs.61.141_2

Cited by 9 publications

(3 citation statements)

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“…The cross-section used for CFST latticed columns usually consists of two, three, or four chords, among which the four-chord ones are mostly used in practice. Kawano et al [4][5][6] conducted experiments to determine the behavior of circular two-legged CFST latticed member loaded with cyclic lateral force. The results indicated that the deformability and load-bearing capacity of composite member were significantly better than those of the equivalent steel member owing to the presence of the concrete fill in the chord elements.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Two-Chord Steel–Concrete Composite Columns under Axial Compression

Kovač-Striko,

Landović,

Čeh

et al. 2023

Applied Sciences

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Experimental and numerical research on axially compressed columns made from built-up two-chord concrete-filled steel tubes (TCCFSTs) is presented in this study. The columns were constructed from two parallel circular high-strength steel tubes connected by five batten tubes. The chord tubes were filled with high-strength concrete. The yield stress of the steel used was 600 MPa, while the cylinder compressive strength of the concrete was 95 MPa. Hollow specimens were also tested to serve as a control group. An experimental analysis investigated the influence of the compressive strength of the concrete fill on the load-bearing capacity of the column and the influence of the concrete fill on the slenderness of the column. The behavior under load, stress and strain development, and the failure modes of the specimens were also analyzed. The results of the tests showed that all parts of the built-up column participated in the load-bearing process. The load-bearing capacity of the hollow two-chord columns was improved by around 1.74 times, and the slenderness increased by 16% with the concrete infill. The columns filled with concrete exhibited almost linear behavior with a higher ultimate strength and stiffness than the hollow built-up steel columns. Furthermore, the application of three calculation codes to forecast the capacity of the TCCFST columns was evaluated. Additionally, finite element method (FEM) modeling was used to investigate the stresses, strains, deformations, and ultimate capacity of the TCCFST column models loaded with axial compressive force. The FEM model showed good predictions of strength, stresses, deformations, and buckling.

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Section: Introductionmentioning

confidence: 99%

Behavior of Two-Chord Steel–Concrete Composite Columns under Axial Compression

Kovač-Striko,

Landović,

Čeh

et al. 2023

Applied Sciences

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“…1(a)] under lateral cyclic loadings was conducted by Kawano et al (1996) [5], and it was shown that the rigidity and strength of connections between CFST limbs and tube lacings were improved compared to the corresponding steel latticed columns. After that, the scholars began to pay close attention to the seismic behaviour of four-legged CFST latticed members with various lacing arrangements, and more experimental and theoretical investigations had been carried out, as summarized in Table 1, where is the height of the specimen, and are the tube external H 2016) [4][5][6][7][8][9] and pseudo-dynamic (Deng 2012) [6] testing methods were considered in the experimental investigation, and numerical simulations were further carried out by using the software packages ABAQUS (Deng 2012; Luo 2013) [6,7] and OpenSees (Huang 2015;Yuan et al 2016) [4,9]. It can be concluded from the literature review that there is little research on the performance of three-legged CFST latticed columns subjected to cyclic loadings, which indicates the study of this subject is timely.…”

Section: Introductionmentioning

confidence: 99%

“…D s /T s =24.hysteretic curve of the specimens.D s /T s =24.Comparison D s /T s =51. (Continued) D s /T s =24.Comparison of hysteretic curves between CFST latticed specimens and the steel D s /T s =51 5. (2) D s /T s =24.9 (c) Point E Effect of parameters on typical backbone curves.…”

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confidence: 99%