EXPERIMENTAL RESEARCH ON HYBRID CONNECTING METHOD FOR FRP CONSTRUCTIONAL ELEMENTS

Pultruded fibre reinforced plastics are widely used in civil engineering. The connection problem of composites is one of the key problems on the design of composite structures. There are three main connection methods for FRP: bonded connection, bolted connection and hybrid connection. In this paper, through the comparative analysis of these three connection methods, it can be seen clearly that because hybrid joints incorporate the advantages of the bonded and bolted connections, hybrid joints have larger stiffness, better ductility, and reasonable stress distribution. In addition, there is an increase in carrying capacity than that of bolted connections. Moreover, for a hybrid connection joint, the main influence factors are studied by experiments for its failure mode and carrying capacity, such as the end distance, the number of bolts, the lap length and the diameter of bolts.