FRP SHEAR TRANSFER MECHANISM FOR PRECAST CONCRETE SANDWICH PANELS
This paper present experimental and analytical investigation undertaken to study the behaviour and the effectiveness of using the Carbon Fiber Reinforced Polymer(CFRP)grid as shear reinforcement for precast concrete sandwich panels(PCSP).The experimental program studied the effect of various parameters believed to affect the shear flow strength for this CFRP grid/foam system.The parameters that were considered are the spacing between vertical lines of CFRP grids and the thickness of the rigid foam.Results of the experimental program indicated that increasing the spacing between vertical lines of CFRP grid increase the overall shear flow strengths due to the increase of the bonded contact area of the rigid foam to the concrete surface.However,it should be noted that the overall shear stresses were decreased due to the increase of this interface surface area.Test results also indicated that increasing the rigid foam thickness decreases the overall shear flow strength when compared with same quantity of CFRP grid spacing.A non-linear 3-D FEM analysis was performed to model the behaviour of the tested segments and to study the behaviour of PCSP.Results of FEM analysis were found in good agreement with the experimental results.Design equation was developed to determine the shear flow strengths for given CFRP grid/foam systems.
Bond-slip behaviour Carbon-fiber-reinforced polymer Concrete sandwich panel Finite element analysis Non-linear analysis Shear test
K.Hodicky G.Sopal S.Rizkalla
Technical University of Denmark,Department of Civil Engineering,Section of Structural Engineering,Br Tower Engineering Professionals,Inc.,3703 Junction Blvd,Raleigh,North Carolina,USA North Carolina State University,Department of Civil,Construction and Environmental Engineering,2414
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2017-07-19（万方平台首次上网日期，不代表论文的发表时间）