Stiffness Analysis Of Multi-span Steel Plate Shear Walls In Multi-storey Frame Structure

As the steel plate shear wall with anti-sway stiffness, good seismic energydissipation capacity, and light weight, installation fast, easy, clean venue, etc., which isused as the main lateral force resisting members and the new high-rise buildingstructures has broad application prospects. In this paper, using the finite element methodto analyze the thickness ratio,1:3scale model of a single-layer single-span steel plateshear wall aspect ratio of shear-the impact of displacement, and a six-story three-spansteel frame embedded steel scissors force wall structure were studied static nonlinearproperties, according to thickness ratio and generous than the establishment of a steelframe-a multi-layer multi-span steel plate shear wall model, taking into accountrelevant factors initial defects, material nonlinearity of steel the impact point of thebeam-column connection, column-sectional analysis of the size, the overall stiffness ofthe seismic velocity structure of degraded performance and structure in case of axialcompression ratio。The results show：（1） With the increase of thickness ratio, the bearing capacity decreased, but thelateral displacement increases, increased thickness ratio, the bearing capacity increases,but when it reaches a certain value, the increase in carrying capacity is not obvious.（2） In considering the initial defects and material nonlinearity case, verified thebuilding structure is very suitable for seismic regions in Xi’an.（3） In the building structure, when the steel plate shear wall cross-sectionaldimensions remain unchanged, pillars sectional dimensions, the greater stiffness of thebearing capacity of the structure to improve more significantly, when the stiffnessreaches a certain value, the carrying capacity increase no longer obvious, but the structure and lateral displacement downward trend.（4） Axis pressure exerted on the pillars of the pillars of the stiffness degradationrate also played a decisive role in relation to the vertical pillars can play a supportingrole to the plate. In order to make steel plate shear walls play a very good lateral ability,axial compression ratio is not too large, and the stiffness of steel obtained in the overallstiffness of the larger proportion. So necessary to play a binding effect on the beam butalso play a vertical restraint on steel, and in the same time to ensuring their stiffnessdegradation rate of the force in the case of slow degradation.