Abstract
An experimental investigation of the bolt pull-through stiffness and strength of pultruded glass-fibre-reinforced polymer (GFRP) plate is described. Details of an adjustable bolt pull-through test rig are presented. The rig was used to carry out 80 low and ultimate load tests on single bolts loaded in tension at the centres of square pultruded GFRP plates. In the tests, one plate thickness, two bolt diameters, four plate side lengths, two sets of plate edge conditions and two orientations of the principal orthotropic axes with respect to one of the edge conditions were investigated. Transverse stiffnesses as well as damage and ultimate tensile loads of the bolt–plate specimens were quantified from the test data. The latter are presented graphically to illustrate the effects of bolt diameter, plate slenderness, plate edge conditions, etc. on stiffnesses and damage/ultimate loads. Failure modes are also described and illustrated.
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