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Transactions of Tianjin University

, Volume 23, Issue 3, pp 258–266 | Cite as

Flexural Capacity Formula of Diaphragm-Through Joints of Concrete-Filled Square Steel Tubular Columns

  • Bin Rong
  • Rui Liu
  • Zhenyu Li
  • Changxi Feng
  • Guangchao You
  • Fafitis Apostolos
Research article
  • 99 Downloads

Abstract

Finite element analysis and parametric studies were performed to investigate the flexural capacity of the panel zone of diaphragm-through joints between concrete-filled square steel tubular columns and H-shaped steel beams. Through the comparisons of failure modes, load–displacement curves, and bearing capacity, it was found that the flexural capacity of the panel zone of diaphragm-through joints was determined by the tensile action and influence of the web of H-shaped steel beams, and the axial load should be taken into account. The steel tube and the diaphragm were the major parts of the joint that resisted the bending moment. The contribution of in-filled concrete had little influence on the flexural capacity of the panel zone of the joint and could be neglected. According to the results of these numerical studies, a formula that considered the influence of the web of H-shaped steel beams and the axial load was developed based on the yield lines in the diaphragm and the steel tube. The results of the proposed formula were in good agreement with the numerical data of this investigation.

Keywords

Diaphragm-through joint H-shaped steel beam Flexural capacity Finite element analysis Yield line 

Notes

Acknowledgements

This study was supported by the National Natural Science Foundation of China (No. 51268054 and No. 51468061) and Natural Science Foundation of Tianjin, China (No. 13JCQNJC07300).

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Copyright information

© Tianjin University and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Bin Rong
    • 1
    • 2
  • Rui Liu
    • 1
  • Zhenyu Li
    • 1
  • Changxi Feng
    • 1
  • Guangchao You
    • 1
  • Fafitis Apostolos
    • 3
  1. 1.School of Civil EngineeringTianjin UniversityTianjinChina
  2. 2.Key Laboratory of Coast Civil Structure SafetyMinistry of EducationTianjinChina
  3. 3.Department of Civil and Environmental EngineeringArizona State UniversityTempeUSA

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