Compressive behavior of concrete-filled GFRP tubular stub columns after being subjected to freeze-thaw cycles
作者： Kang He , Qingjie Lin , Yu Chen , Zhan Guo
DOI: 10.1016/J.COMPSTRUCT.2020.112904
关键词: Composite material 、 FTCS scheme 、 Glass fiber 、 Axial compression 、 Compressive strength 、 Stub (electronics) 、 Fibre-reinforced plastic 、 Axial load 、 Stiffness 、 Materials science
摘要: Abstract This paper aims to investigate the mechanical properties of concrete-filled glass fiber reinforced plastic (GFRP) tubular stub columns after being subjected freeze-thaw cycles (FTCs). A total 72 GFRP (CFGT) treated with different FTCs were tested under axial load. The ultimate capacity, initial stiffness, load-displacement curves, load-strain and failure modes obtained analyzed. Test results indicated that phenomena specimens compression similar, mainly including fracturing tube crushing core concrete. FTCs, concrete strength column height all had a significant influence on specimens. capacity stiffness decreased evidently increase number FTCs. By increasing column, deformation square could be effectively improved. change CFGT was result combined effect compressive height. Finally, simplified formulas for calculating proposed.
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