DEEP EMBEDMENT FRP SHEAR STRENGTHENING METHOD FOR CONCRETE SLABS UNDER LOADS CLOSE TO SUPPORTS
Reinforced concrete bridge deck slabs without shear reinforcement need to resist high magnitude concentrated loads.The governing failure mechanism of reinforced concrete bridge deck slabs is commonly shear.However,the existing shear strengthening methods,such as Externally Bonded(EB)FRP technique and Near Surface Mounted(NSM)FRP technique,are unavailable to apply in the shear damaged concrete bridge deck slabs.This paper reveals deep embedment FRP strengthening method for concrete slabs without shear reinforcement subjected to loads near supports,which could be failed in shear.In this research,an experimental test of a series of eight full scale concrete slabs(2100mm×400mm×200mm)is presented.To assess the effectiveness of this technique used in concrete slabs,the types of embedded materials and spacing of embedded rods were varied.The behaviour of test slabs was discussed and the influence of those structural parameters on the amount of embedded FRP was evaluated by comparing the results of different specimens.By using this strengthening strategy,the failure mode of concrete slabs was varied from brittle shear-compression failure to ductile flexural failure.The ultimate capacity and deflection at the failure was both enhanced by deep embedment strengthening method.
Deep embedment strengthening FRP Concrete slabs
J.B.Yang Y.Zheng C.Sun
Department of Civil Engineering,Dongguan University of Technology,China
国际会议
新加坡
英文
1-5
2017-07-19（万方平台首次上网日期，不代表论文的发表时间）