Abstract: The splicing concrete-filled GFRP tube composite members is a new kind of composite member， which is composed of two independent GFRP tubes connected by connectors with poured concrete inside. The mechanical behavior and failure modes of splicing and continuous concrete-filled GFRP tubular composite member connected by steel bars， steel plates and steel tube under axial load were studied. The results indicated that white stripes appeare on the surface of GFRP tube when the load reaches about (30%~40%)P_u (limit load)， and the confinement effect of GFRP tube are motivated when the load reaches (60%~70%)P_u. The failure of splicing specimens occurrs near the end of connectors instead of the splicing joint. However， the failure of the continuous specimen occurrs in the middle of the specimen. Results show that the influence of the three connecting ways can ensure the normal work of splicing concrete-filled structures.

Key words: GFRP tube, steel bars, steel plates and steel bar, steel tube, axial compressive member, splicing