Steel and Composite Structures

  • 제20권3호
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  • Pages.487-500
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  • 2016
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

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

  • Rong, Bin (Department of Civil Engineering, Tianjin University) ;
  • Liu, Rui (Department of Civil Engineering, Tianjin University) ;
  • Zhang, Ruoyu (Department of Civil Engineering, Tianjin University) ;
  • Chen, Zhihua (Key Laboratory of Coast Civil Structure Safety, Tianjin University) ;
  • Apostolos, Fafitis (Department of Civil and Environmental Engineering, Arizona State University)
  • 투고 : 2015.03.12
  • 심사 : 2015.11.04
  • 발행 : 2016.02.29
⟨ 이전 논문 다음 논문 ⟩

초록

In order to investigate the flexural bearing capacity of panel zone of diaphragm-through joint between concrete filled square steel tubular column and steel beam, four specimens were tested under static tension loads to study the mechanical properties and bearing capacity of diaphragm-through joints with a failure mode of panel zone. Finite element models of these specimens were developed to simulate the test and compare the predicted failure modes, load-displacement curves and bearing capacities with the experimentally observed. It was found that the tensile load from the steel beam flange is mainly shared by the square steel tube and the diaphragm. The diaphragm plastic zone appears along the cross-section lines enclosed by the square steel tube and the influence of steel beam web on the plastic zone of the steel tube is significant and cannot be neglected. Computational models of yield lines on square steel tube and diaphragm are established based on the distribution pattern of the plastic zone, and an analytical method for the evaluation of the bearing capacity of the joint is proposed. The theoretical results and the experimental data are compared and found in good agreement.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundations of China, Natural Science Foundation of Tianjin City

참고문헌

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피인용 문헌

  1. Flexural Capacity Formula of Diaphragm-Through Joints of Concrete-Filled Square Steel Tubular Columns vol.23, pp.3, 2017, https://doi.org/10.1007/s12209-017-0035-4
  2. Shear behaviour of panel zone in through-diaphragm connections to steel tubular columns vol.122, 2018, https://doi.org/10.1016/j.tws.2017.10.029
  3. Studies on performance and failure mode of T-shaped diaphragm-through connection under monotonic and cyclic loading vol.13, pp.1, 2018, https://doi.org/10.2140/jomms.2018.13.1
  4. Experimental seismic behaviour of L-CFST column to H-beam connections vol.26, pp.6, 2018, https://doi.org/10.12989/scs.2018.26.6.793
  5. Parametric Analysis on the Circular CFST Column and RBS Steel Beam Joints vol.12, pp.9, 2016, https://doi.org/10.3390/ma12091535
  6. Computational Model of the Elastic Stiffness of Panel Zone in Diaphragm-Through Connections vol.19, pp.5, 2016, https://doi.org/10.1007/s13296-019-00237-z
  7. Shear resistance of through-diaphragm connections between concrete-filled steel tubular column and H-shaped steel beam with tension field model vol.22, pp.13, 2016, https://doi.org/10.1177/1369433219852054
  8. Tensile Capacity of Concrete-filled Square Tubular Columns Connection with External Stiffening Ring vol.23, pp.10, 2016, https://doi.org/10.1007/s12205-019-1736-0
  9. Study on the performance of concrete-filled steel tube beam-column joints of new types vol.26, pp.6, 2020, https://doi.org/10.12989/cac.2020.26.6.547
  10. Mechanical properties of π-shaped joints of flat concrete-filled steel tubular column vol.187, pp.None, 2016, https://doi.org/10.1016/j.jcsr.2021.106916
  11. Experimental and numerical research on hysteretic behavior of CFST frame with diaphragm-through connections vol.45, pp.None, 2016, https://doi.org/10.1016/j.jobe.2021.103529