Study on axial compression performance of prefabricated GFRP-steel plate-channel steel-concrete composite shear wall with sandwich insulation
A prefabricated GFRP-steel plate-channel steel-concrete composite shear wall with sandwich insulation was proposed.Three walls with different reinforcement forms and concrete types were designed for axial compression tests.The failure mode,load-displacement curve,load-strain curve,bearing capacity reserve coefficient,ductility coefficient,material utilization rate of the wall under axial compression were obtained.The parametric analysis of the wall was carried out by ABAQUS finite element analysis software,and the influence of the strength and thickness of the embedded steel plate on its axial compression performance was studied.The results show that the wall has good bearing capacity reserve capacity and ductility performance.The incorporation of 1％volume ratio of steel fiber into concrete can effectively improve the tensile properties of concrete in the wall,the strength of concrete can be more fully utilized,and the arrangement of steel bars can greatly improve the ductility of the wall.The bearing capacity and ductility of the wall increase with the increase of the thickness and strength of the embedded steel plate,and when the strength is Q355 and the thickness is 4mm or 6mm,the material utilization rate of the wall is higher.The axial compression bearing capacity design formula suitable for this kind of wall was proposed.The calculation results considering the buckling of the steel plate and the combined effect of the section are accurate.
万方数据
维普
