Mechanical properties of concrete filled steel tube members constrained by carbon fiber reinforced materials under bidirectional coupled loading

Qing-Li Wang; Hai-Yu Qin; Kuan Peng

doi:10.1016/j.heliyon.2024.e34144

Mechanical properties of concrete filled steel tube members constrained by carbon fiber reinforced materials under bidirectional coupled loading

Heliyon. 2024 Jul 4;10(13):e34144. doi: 10.1016/j.heliyon.2024.e34144. eCollection 2024 Jul 15.

Authors

Qing-Li Wang¹, Hai-Yu Qin¹, Kuan Peng²

Affiliations

¹ School of Civil Engineering, University of Science and Technology Liaoning, Anshan, 114051, PR China.
² School of Intelligent Manufacturing, Chengdu Technological University, Chengdu, 610031, PR China.

Abstract

Carbon fiber reinforced composite structures have been a research hotspot in recent years, with 9 specimens designed for static tests under bending and torsion loads of CFRP concrete filled steel tubes. The torque angle (T-θ) curve was studied from an experimental perspective. Subsequently, a reasonable finite element model was established using ABAQUS software. In addition, the effects of changes in parameters such as the number of steel concrete strength, bending ratio, and steel ratio on C-CF-CFRP-ST bending and torsion specimens were studied through numerical parameter research. Finally, equations of bearing capacity of CFRP-concrete filled steel tube under coupled bending and torsion are proposed.

Keywords: CFRP; CFST; Finite element analysis; Loading performance.