Research On Lateral Performance Of Corrugated Steel Shear Wall Structure

In this paper,through the combination of theoretical analysis and finite element simulation,the lateral resistance of the corrugated steel plate shear wall structure is mainly studied,including the corrugated steel plate shear wall and the corrugated steel plate composite shear wall.The corrugated steel plate shear wall includes sinusoidal corrugation Steel plate shear wall and trapezoidal corrugated steel plate shear wall,the corrugated steel plate composite shear wall is a double corrugated steel plate filled concrete composite shear wall.In addition,for the convenience of design and calculation,the simplified model of the above corrugated steel plate shear wall is also studied.From the influence of the lateral rigidity and bearing capacity,the placement direction of the corrugated steel plate shear wall was determined,and the lateral rigidity and bearing capacity of the corrugated steel plate were analyzed.Based on the theory of orthotropic plates,the calculation formulas of the lateral stiffness of the two corrugated steel plates were re-derived;through the theoretical derivation of the buckling of the corrugated steel plates and the finite element simulation,the calculation formulas of the shear buckling of the two corrugated steel plates were obtained;The influence of geometric parameters on the performance of corrugated steel plate shear wall can be obtained.Corresponding suggestions are given for the selection of corrugated steel plate shear wall by limiting the height-to-thickness ratio of corrugated steel plate shear wall,restraining local buckling,and the order of occurrence of shear buckling and yield.The lateral resistance of the corrugated steel composite board is also analyzed.As with corrugated steel plates,the stiffness is first calculated.Through simulation of the parameters of the corrugated steel composite board,it is found that properly reducing the shear span ratio is beneficial to increase the lateral rigidity and bearing capacity of the composite board;increasing the thickness of the steel plate will greatly increase the bearing capacity of the composite board;the axial compression ratio is also an important Influencing factors.It was also found that the wavelength of the corrugated board,the strength level of the concrete and the corrugation angle have little effect on the bearing capacity of the corrugated board,and they are not used as the main parameters of the design.Through theoretical derivation,the design calculation formula of corrugated steel composite shear wall under shear is obtained.Due to the complex geometry of corrugated steel plate shear walls and the difficulty of modeling and analysis,a simplified model of equivalent cross braces is proposed.For the corrugated steel plate shear wall,the lateral stiffness,buckling stress,shear bearing capacity and material parameters are equivalent,and the initial stiffness is more accurate,but the results of the obtained pushover analysis curve and hysteresis curve are not very good;for corrugated steel plate The composite shear wall also adopts the simplified model of equivalent cross bracing,which is equivalent to the lateral stiffness and bearing capacity.Through simulation verification,it is found that the initial stiffness is in good agreement.This simplified model can better simulate the elastic phase of the corrugated steel composite shear wall in the elastic stage.performance.In order to explore the seismic performance of the corrugated steel plate shear wall in the overall model,a 100-meter model was established using corrugated steel plate shear wall and corrugated steel plate combined shear wall,and the simplified model was also used for comparative analysis.The study found that the equivalent cross simplified model can be used to analyze the corrugated steel plate shear wall structure.The corrugated steel plate shear wall has good seismic performance and is suitable for the seismic design of high-rise structures.