Finite Element Analysis Of Lateral Performance Of L-shaped Double Corrugated Steel-concrete Composite Shear Wall

With the gradual increasement of building height,the resistance to lateral force is particularly important,and composite shear walls are widely used in high-rise buildings.The steel plate concrete composite shear wall(SCW)play the synergistic effect of steel plate and concrete,which has more outstanding mechanical properties,however when the horizontal load of shear wall is large,the relative slip phenomenon between steel plate and concrete will occur,which will weaken the adhesion force between steel plate and concrete,reduce the constraint ability of steel plate to concrete,and have adverse effect on seismic performance.To reduce the adverse effect of this phenomenon on seismic performance,this paper proposes to improve the common SCW,and designs a new type of double corrugated steel plate-concrete composite shear wall(RSCW)—The outer steel plate is corrugated steel plate and in the shape of steel tube bundle.This form can increase the bonding force between steel plate and concrete,enhance the restraint of steel plate to concrete,and improve seismic performance.To study the seismic performance of the RSCW,the finite element simulation method is used to compare the seismic performance of the one-character RSCW and the SCW,and then the seismic performance of the L(LRSCW)is analyzed.The specific research method in this paper is as follows:Firstly,based on ABAQUS software,the finite element numerical simulation method is used to simulate and analyze the double steel slab-concrete composite shear wall test that studied by Tianjin University.Compared with the skeleton curve and peak load of the simulation results and the test results,the curve shape is similar,the peak load difference is 3.5-6.1,the error is within the allowable range,which ensures the rationality of the simulation method,also lays a foundation for the study of RSCW.Secondly,on the basis of reasonable simulation method,two steel-concrete composite shear wall components in steel tube bundle form are designed,one is a one-character RSCW type,the other is a one-character SCW type.By simulating and analyzing these two components,this paper finds that the RSCW type has better seismic performance after comparing and evaluating the mechanical properties of the two types from the aspects of horizontal bearing capacity,ductility,stiffness and energy dissipation capacity.Thirdly,six groups of 20 specimens were designed according to the different design parameters(concrete strength,steel strength,steel plate thickness,axial compression ratio and shear span ratio,number of hollow web regions,and corrugate number on steel plate)of L-shape double corrugated steel plate-concrete composite shear wall(LRSCW)after the study results of RSCW shows excellent seismic performance.A comparative analysis of ductility,energy dissipation capacity,horizontal bearing capacity and stiffness of LRSCW component under lateral force is carried out.The results show that the ductility and energy dissipation capacity of LRSCW components can be guaranteed in a good state when degree of synergies is in a high status between concrete and steel plate,also compared with other parameters,the increase of steel plate thickness is the best way to enhance the horizontal bearing capacity of LRSCW components.