Steel and Composite Structures

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FEM analysis of the modular prefabricated steel-concrete composite beam-column internal joint under reciprocating action

  • Wu, Cheng Long (Department of Civil Engineering, Qingdao University of Technology) ;
  • Kan, Jian Cheng (Department of Civil Engineering, Qingdao University of Technology) ;
  • Wang, Qi Hui (Department of Civil Engineering, Qingdao University of Technology) ;
  • Liu, Ji Ming (Department of Civil Engineering, Qingdao University of Technology) ;
  • Li, Zun Qiang (Department of Civil Engineering, Qingdao University of Technology)
  • Received : 2021.01.16
  • Accepted : 2021.08.10
  • Published : 2021.10.10
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Abstract

Prefabricated steel-concrete composite structure has the advantages of large bearing capacity, reliable connection, and good durability, which is of great significance to the development of building industrialization. In this paper, a finite element model (FEM) of the modular prefabricated SRC column-steel beam composite joint is established and verified its accuracy through ABAQUS. The effects of various parameter variables on the hysteresis curve, skeleton curve, ductility, energy consumption, and performance deterioration are investigated. The results show that as the axial compression ratio increases, the joint bearing capacity first increases and then decreases, the strength and stiffness have relatively stable degradation characteristics. However, the hysteresis curve has a certain "pinch" phenomenon, which reduces the energy consumption performance. Different column end bolts margin and apertures have little effect on the bearing capacity, strength and stiffness degradation performance, but affect energy consumption and ductility. The width-to-thickness ratio of the square steel tube has a greater impact on the bearing capacity, energy consumption and ductility, and has less impact on the strength and stiffness degradation performance. As the thickness of the joint cover plate increases, the bearing capacity, energy consumption and initial stiffness of the joint gradually increase, the ductility first increases and then decreases.

Keywords

Acknowledgement

The writers gratefully acknowledge the support for this work, which was funded by the National Natural Science Foundation of China (51078195), the Shandong University Scientific Research Program (A 2018-065).

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