EFFECT OF BASALT FRP CONNECTOR SIZE AND INSERTION ANGLE ON SHEAR TRANSFER IN PRECAST CONCRETE INSULATED WALL PANELS
Fibre reinforced polymers(FRPs)are advantageous in precast concrete insulated wall panels as they have lower themal conductivity than traditional steel or concrete shear connectors.Ten double shear push-through tests with basalt-FRP(BFRP)connectors and expanded polystyrene(EPS)insulation were conducted to evaluate the effect of BFRP bar diameter(4 to 8 mm)and insertion angle(30 to 60 degrees,loaded both in tension and compression)on shear resistance.This system is then compared to one with steel shear connectors.In tension,larger FRP connectors tended to fail by pull-out but have higher capacities than equivalently sized steel connectors.However,BFRP connectors have significantly lower capacity(~30%that of tension)in compression; this loading case should be avoided if possible.A simple model that predicts the shear flow of both the connectors and EPS insulation was validated against the experimental results.This model and the experimental results show that adjusting connector insertion angle and connector diameter significantly affects shear flow.Design charts are then presented which allow designers to estimate the shear flow in panels with angled FRP connectors.
Precast Concrete Shear Connector Basalt FRP
Douglas G.Tomlinson Amir Z.Fam
Department of Civil and Environmental Engineering,University of Alberta,9211-116th St.Edmonton,Canad Department of Civil Engineering,Queens University,58 University Ave.,Kingston,Canada
国际会议
新加坡
英文
1-4
2017-07-19（万方平台首次上网日期，不代表论文的发表时间）