Abstract: To investigate the axial compression performance for the GFRP high strength concrete short columns， four composite columns with different cross sections were tested under axial compressive load so as to understand the working mechanism and failure mode. The results showed that， in the early stage of the load， the combination column GFRP tube is not bound on the concrete. As the load increases， the GFRP tube surface appears white streaks and a slight noise is noted. In the limit state， the GFRP tube is pulled off accompanying with a huge sound. The carrying capacity of the GFRP tubehigh strength concretethe steel tube composite column is about 37% higher than that of the GFRP tubehigh strength concreteGFRP tube composite column. In the foundation of uniform theory， the formula of ultimate bearing capacity is established， and the theoretical calculations are in good agreement with the experimental results.

Key words: GFRP tube, high strength concrete, steel tube, doubleskin tubular, axial compression