STUDY ON AXIAL COMPRESSION PERFORMANCE OF FRP CONFINED CONCRETE CYLINDER COLUMNS BASED ON NUMERICAL EXPERIEMNTS

Abstract

Abstract: Fiber-reinforced Polymer (FRP) Confined Concrete Column (FCCC) have superior axial compressive capacity and ductility. It is difficult to make a comprehensive study about key parameters such as sectional dimension, concrete strength and number of FRP layer, due to the common approach, specimens experiment. Firstly, FCCC′s axial compressive test and simulation were reviewed. Then, a Finite Element (FE) model was created based on Drucker-Prager Constitutive and the validity of the FE model was verified based on the existing experimental results. Then, the axial compressive performance of FRP confined concrete column with different parameters was investigated using the verified FE model. Diameter of section, concrete strength grade and number of FRP layer were selected as key parameters and their ranges were 150 mm~750 mm, C30~C80 and 1~5, respectively. The results show that when the layers of FRP are constant, as the strength level of concrete increase, axial strength and ductility increase and decrease, respectively. When the concrete strength are constant, the axial bearing capacity and ductility of FCCC increases with increasing layers of FRP. When constraint amount of FRP and concrete strength are constant, confinement effect of FRP for inner concrete decreases with increasing diameter of section. The comprehensive studies about the effects of different parameters on the axial compression performance of FCCCs in this paper can provide a reference for further research and design of FCCCs.

Key words: FRP confined concrete columns (FCCC), axial compression, confinement effect, Drucker-Prager model, numerical experiment

CLC Number:

TB332

ZHANG Bing, SUN Yun-lou, QI Yu-jun. STUDY ON AXIAL COMPRESSION PERFORMANCE OF FRP CONFINED CONCRETE CYLINDER COLUMNS BASED ON NUMERICAL EXPERIEMNTS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(1): 50-59.

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