EXPERIMENTAL STUDY ON TENSILE BEHAVIORS OF HYBRID CFRP-STEEL DOULBLE-LAP JOINTS USING BOLTS AND ADHESIVE

Tensile behavior of hybrid CFＲP-steel double-lap joints using adhesive and bolts was studied through monotonic loading to failure． Their ultimate bearing capacity，strain distribution and failure modes were investigated with comparison to the joints with bolts and adhesive． Meanwhile，influences of fabrication processes were also studied． The results show that hybrid joints have a relatively stable bearing capacity． With regard to fabrication methods，it was found that for specimens which are bonded before being drilled and bolted，more bolts can lead higher bearing capacity to some extent． But too many bolts result in less loading bearing capacity． Specimens that were drilled before bonding and bolting can work together very well． Which requires strict fabrication process．