Study on Axial Compression Test of Fiber Reinforced Ultra-High Strength Concrete Column Confined by High-Strength Reinforcement

摘要

Axial compression test of 9 high-strength reinforcement confined ultra-high strength concrete with PVA fibers columns were presented. The influence of concrete strength, reinforcement spacing on the behavior of the confined concrete was investigated. The results show that the ductility of columns decrease with the concrete strength increase, and decreasing the reinforcement spacing can increase ductility of columns. In the test, when the confined concrete reached the peak stress, the transverse reinforcement did not yield.