Abstract: In this paper, the pull-out performance of pultruded FRP (PFRP) with punching hole were studied. Parameters such as different resin matrix and fiber directions were investigated. The results indicate that the pull-out performance of bolted joints of polyurethane-based PFRP is better than the unsaturated polyester resin-based ones. And, the bearing capacity of the bolted joint on multi axial PFRP is better than the specimens with uniaxial fibers for the reason that multi axial fiber can effectively prevent the PFRP from longitudinal splitting. To numerically investigate the mechanical behavior of PFRP bolted joints, a progressive damage analysis material model integrating Hashin failure criteria was used. The 3D finite element models were established in Abaqus.

Key words: pultruded FRP, punching, pull-out performance of bolted joints, progressive damage analysis