Study On Seismic Behavior Of Composite Shear Wall With Steel Silo And Filled Concrete With Round Tube Support

The composite shear wall with steel silo and filled concrete with round tube support is a new type of composite component,which consists of a u-shaped steel plate,a 1-shaped steel plate and a number of welded circular tube supports.Steel plate silo combined shear wall has the advantages of thin steel plate,light weight,less welding,good stiffness outside the plane,etc.It can not only improve the construction efficiency,but also save steel consumption and welding workload.In this paper,finite element software ABAQUS is used to conduct numerical simulation study on the seismic performance of composite shear wall of steel silo with tubular support.The specific research work and conclusions are as follows:(1)The finite element software ABAQUS was used to simulate the existing experiments,and the simulation results were compared with the experimental results to verify the modeling method.Proving that the material constitutive model and damage factor calculation model,the contact problem,unit type selection,meshing,boundary conditions and loading method can be used to study the seismic performance of the composite shear wall with steel silo and filled concrete with round tube support.(2)The finite element software ABAQUS was used to analyze parameters of composite shear wall with steel silo and filled concrete,the shear span ratio,steel strength grade and thickness of steel plate and concrete grade,axial compression ratio,wall thickness and other parameters on the seismic performance of steel silo composite shear wall,the influence of the results showed that increase the strength of steel plate and steel plate thickness can effectively improve the bearing capacity of components;The plastic deformation ability of the member can be improved by increasing the wall thickness.Increasing the axial compression ratio will weaken the deformation ability and energy dissipation ability of the components.With the increase of the axial compression ratio,the bearing capacity of the members increases first and then decreases.When the axial compression ratio is less than 0.4,the bearing capacity of the members increases with the increase of the axial compression ratio;when the axial compression ratio is greater than 0.4,the bearing capacity of the members decreases with the increase of the axial compression ratio.With the increase of shear span ratio,the plastic deformation ability of the member increases,but the bearing capacity decreases.The lower the shear span ratio,the stronger the energy dissipation capacity of the member.(3)The finite element software ABAQUS is used to build composite shear wall with steel silo and filled concrete with different cross-section height to thickness ratio and different arrangement of round tubes,and the influence of different structural forms on the seismic performance of walls is studied.The results show that the shear bearing capacity of the wall increases with the increase of the ratio of section height to thickness.Increasing the number of circular tubes can improve the bearing capacity of the wall,and the uniform layout of circular tubes can enhance the seismic performance of the members.(4)With reference to norms and existing theories and combined with finite element analysis results,the formulas for calculating the flexural bearing capacity and shear bearing capacity of the composite shear wall with steel silo and filled concrete were established.By comparing the simulation results with the calculated results,the two are in good agreement and provide reference for the design.Using the uniform design method,10 models were established to analyze the simulated data.The results of variance analysis showed that the regression process was highly significant.