Flexural bearing capacity of diaphragm-through joints of concrete-filled square steel tubular columns

Rong, Bin; Liu, Rui; Zhang, Ruoyu; Chen, Zhihua; Fafitis, A.

doi:10.12989/scs.2016.20.3.487

Cited by 13 publications

(3 citation statements)

References 12 publications

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“…Rong et al [12] investigated the mechanical properties and failure modes of diaphragmthrough joints of CFST columns and found that the tensile load of the steel beam flange was shared by the square steel tube and the diaphragm. Four specimens were tested under static tension loads to further study the bending capacity of the panel zone of diaphragm-through joint [13]. The boundary condition of low-cycle reciprocating loading in the experiment is closer to the stress state of the joints in the actual structure, and the mechanical performance of the joints can be realized under the action of the earthquake.…”

Section: State Of the Artmentioning

confidence: 99%

Experimental and Numerical Analysis of the Seismic Behavior of Outer Shell Joints for H-Shaped Steel Beam and Square Tubular Column

Zhang¹,

Tao²,

Zhang³

2017

JESTR

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A considerable amount of welding has a negative effect on traditional joints. Experimental and numerical studies of new bolted outer shell joints under low reversed cyclic loading were presented, and a total of four outer shell joints of Hshaped steel beam and square tubular column were tested with experimental parameters, such as sectional dimensions and concrete in the tubular column, to improve the beam-to-column joint form. Moreover, the cooperative deformation behavior between the outer shell and the column wall was discussed. In addition, complementary finite element simulation was used, and its results were compared with the experimental results. On this basis, the main indexes that affected the performance of the joints were analyzed. Results show that the hysteresis curves of the outer shell joints are full, the bearing capacity and initial stiffness are significantly improved with the increase in the sectional dimensions, while the ultimate rotation angles are reduced, degrading the stiffness to 0.13-0.24 times its initial stiffness at the last loading level. Notably, the strain ratios of the outer shell and the adjacent steel tubular column are approximately 1:2.5 in the elastic stage. Parametric analysis shows that the thickness of the outer shell should be approximately 8 mm. Similarly, the 11 mm thick T-steel web with regard to the setting stiffener is significant in improving bearing capacity. The proposed study provides a theoretical reference for the application of outer shell joints in practical engineering.

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Section: State Of the Artmentioning

confidence: 99%

Experimental and Numerical Analysis of the Seismic Behavior of Outer Shell Joints for H-Shaped Steel Beam and Square Tubular Column

Zhang¹,

Tao²,

Zhang³

2017

JESTR

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show abstract

“…It was shown that, such a type of joint satisfies the requirement indicated in existing seismic design standards. Finite element analyses and static tensile load tests were conducted by Rong et al for studying mechanical performance and failure mode of CFST square column diaphragm-through joints [11]. They observed that tensile stress from steel beam flange was mainly absorbed by square steel tube and diaphragm.…”

Section: Introductionmentioning

confidence: 99%

Parametric Analysis on the Circular CFST Column and RBS Steel Beam Joints

Samali

et al. 2019

Materials

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This research analyzes the results of parametric studies of concrete-filled steel tubular (CFST) columns to the reduced beam section (RBS) beam joint with through diaphragm, using ANSYS. Several indices that are able to characterize the cyclic behavior of the composite joints are investigated, including the stiffness degradation, strength deterioration, stress distribution, and energy dissipation capacity. Four main model parameters, including the distance from the diaphragm edge to the cut start, the cut length, the cut depth, and inner diameter of through diaphragm, are analyzed via comparative studies to investigate their impacts on seismic properties of the joint. Finally, the orthogonal experiment is conducted to study the effects of these parameters on the strength and energy dissipation, the results of which are capable of achieving optimal seismic behavior of the joints.

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“…There are three typical types of beam-tocolumn connections, namely, through-diaphragm connection, interior diaphragm connection, and the external diaphragm connection, among which, the throughdiaphragm connection is by far the most popular (Nakashima et al, 1998). Previous experimental studies on the CFST connections under cyclic loading have been extensively reported by Matsui (1985), Kanatani et al (1987), Kawaguchi et al (1993), Shanmugam and Ting (1995), Nishiyama et al (2004), Shin et al (2004), Nie et al (2008), Tizani et al (2013), Rong et al (2016), Qin et al (2014), and Yu et al (2015).…”

Section: Introductionmentioning

confidence: 99%

Shear resistance of through-diaphragm connections between concrete-filled steel tubular column and H-shaped steel beam with tension field model

Rong

Zhang

et al. 2019

Advances in Structural Engineering

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In this article, seismic behavior of through-diaphragm connections between concrete-filled steel tubular column and H-shaped steel beam was investigated through experimental and analytical studies. Three cruciform through-diaphragm connection specimens were tested under cyclic loading to investigate the shear behavior of panel zone. The studied parameters are infilled concrete strength and width-to-thickness ratio of the tube in the panel. The failure mode, load–displacement behaviour, ductility, and strength degradation of these specimens were analysed and discussed in detail. Based on the shear buckling of the panel zone observed in the test, the ultimate shear resistance of the tube web panel referring to the theory of tension field action was investigated. Finally, an analytical model was developed to predict the shear resistance of panel zone. The applicability of this model was validated by the test results.

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Flexural bearing capacity of diaphragm-through joints of concrete-filled square steel tubular columns

Cited by 13 publications

References 12 publications

Experimental and Numerical Analysis of the Seismic Behavior of Outer Shell Joints for H-Shaped Steel Beam and Square Tubular Column

Experimental and Numerical Analysis of the Seismic Behavior of Outer Shell Joints for H-Shaped Steel Beam and Square Tubular Column

Parametric Analysis on the Circular CFST Column and RBS Steel Beam Joints

Shear resistance of through-diaphragm connections between concrete-filled steel tubular column and H-shaped steel beam with tension field model

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