Research on Mechanical Property and Hybrid Effect of CGFRP Bar
When one fiber such as CFRP bar, GFRP bar is stretched, stress-strain curve is always presenting linear change without obvious yielded stage, therefore, FRP bar concrete structure is not as good ductility as reinforcing concrete structure. Mixing more than two fibers comes into being high performance reunited bar, which gets to good performance through controlling the comparison of every fiber bar. It can guarantee tensile strength, and its stress-strain curve can come yielding stage similar to the reinforcing bar. It can effective improve the tenacity of FRP bar. According to hybrid effect theory of composite material, this treatise conducts analytical research to hybrid mode and hybrid effect of FRP bar, putting forward computational methods for fiber critical volume, stress-strain curve, tensile strength and elastic modulus for positive hybrid effect of CGFRP bar. In the promise of guaranteeing performance in service, putting forward train of thoughts of design for CGFRP bar, it has supplied an efficient path to conduct ductility design for FRP bar concrete structure and heightening safety of structure.
CGFRP bar Hybrid effect The rule of mixture Structural ductility
Xinsheng Xu Ning Zhang Shengxiang Zhang
College of Civil Construction of Jinan University, Jinan 250022, China Shandong Province Inv. & Surv. Institute of Urb. & Rur. Construction, Jinan 250031, China
国际会议
南京
英文
694-698
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）