Experimental Research on Seismic Performance of CFRP Reinforced Recycled Aggregate Concrete Composite Torsional Columns
In order to study the seismic performance of CFRP reinforced recycled aggregate concrete com-posite torsional columns,two specimens reinforced by CFRP and one specimen not reinforced by CFRP were designed and carried out pseudo-static tests under composite torsional conditions,and the strain,crack development law and failure mode were analyzed.The results showed that two CFRP reinforced speci-mens had undegone torsional failure,and one unreinforced specimen had undergone bending and torsional failure.CFRP reinforced column specimens had better seismic performance,the peak torque and ductility coefficient increased by 44.68%and 71.41%,respectively,and the strength attenuation,stiffness degra-dation,energy dissipation and cumulative damage were significantly improved.The ratio of longitudinal re-inforcement has little effect on the seismic performance of the specimen,the peak torque is increased by 5.45%,and the stiffness degradation and cumulative damage were improved.
万方数据
维普
