Strengthening of Steel Shear Wall by Glass Fiber Reinforced Polymer

Steel shear wall (SSW) is a new seismic system, which had proper performance against lateral loads during past earthquakes and numerical and experimental studies. Although plate buckling in elastic zone provides post buckling behavior but it causes the reduction of energy absorption, that strengthening with polymer fiber has been proposed as a new method in recent years. In this paper, the performance of steel shear walls with glass fiber reinforced polymers (GFRP) is evaluated and some models will be analyzed using ANSYS software in nonlinear analysis. The results show that the polymer cover increases stiffness, shear capacity and energy absorption but decrease ductility slightly. In investigation of fiber polymer orientation, the study results show that at the angle of 60 degrees, energy absorption increase slightly and decrease about 15 percent at 90 degrees and will change as a function of steel material and span length at 30 and 45 degrees.