Analysis Of Seismic Performance Of Assembled Special-Shaped Border Built-in Steel Plate Concrete Shear Wall

Compared with cast-in-place structure prefabricated concrete structure is lower labor costs,protecting the environment,and having the advantages of green environmental protection,which is meet the requirements of construction industrialization,the inevitable choice to realize the sustainable development of construction industry.The steel mixing structure has the advantages of steel structure and concrete structure,effectively improving the seismic performance of the structure.In order to master the seismic performance of the structure of the assembled special?shaped border built-in steel plate concrete shear wall,it is necessary to carry out in-depth study on its seismic performance.Through numerical simulation method,the different design parameters of assembled special-shaped border built-in steel plate concrete shear wall seismic performance,analyzes the key influence parameters,and compared with cast-in-place model analysis,provide theoretical basis for practical engineering application and technical research reference.By using ABAQUS finite element software to simulate the built-in steel plate concrete shear wall in the existing literature,the results show that the method is accurate and feasible by using the finite element model.In this paper,the concrete strength,the steel ratio,the ratio of the steel ratio,the axial pressure ratio and the height of the width ratio are the design parameters.Fourteen feet assembly model and two scale model are designed.Every model is worked in mechanism and the disruption.Comparing the shear bearing capacity,deformation capacity.stiffness degradation energy,dissipation capacity and ductility,Assembly models are worked in mechanism and the destruction,to understand the force characteristics of the seismic action.The results show that when the strength grade of model concrete was raised from C30 to C40,its shear bearing capacity increased by 3.2%?4.7%.The increase of the steel ratio in the model can increase the bearing capacity of the model by 15.4%?33.5%,the limit displacement increases by 16.0%?33.3%,and the energy dissipation capacity and ductility will gradually increase with the increase of the steel content.When the axial compression ratio of the model is increased from 0.3 to 0.5,the shear bearing capacity of the model will be improved by 5.6%?8.0%,but its deformation ability,energy dissipation capacity and ductility will be reduced.When the height ratio of the model is increased from 0.92 to 1.42,the shear bearing capacity of the model will be reduced by 5.2%?17.3%,while the ductility will decrease,but its energy dissipation capacity and deformation capability will be improved.The bearing capacity of the assembly model is smaller than the current casting model,but its deformation ability and energy dissipation capacity are better than the current casting model.Contrast T frame model and cross border model can be found that the same conditions,the design parameters T frame model of bearing capacity by 6.1%?8.7%higher than the cross border model and T frame model of deformation and energy dissipation is superior to cross border model,two kinds of frame ductility coefficient of the model were greater than 2.22,shows that the ductility of the assembled special-shaped border built-in steel plate concrete shear wall performance meet the seismic requirements.On the basis of a large number of numerical calculation,and puts forward the assembled special-shaped border built-in steel plate concrete shear wall shear bearing capacity calculation formula,and comparing with existing literature test results.The results show that the proposed formula can better express the internal shear bearing capacity of special-shaped border built-in steel plate concrete shear wall,and has certain safety reserve.