Finite Element Simulation On Seismic Performance Of Assembled Shear Wall With Hollow Concrete

At present,the development trend of building structures at home and abroad is to reduce the weight of buildings,increase their defense capabilities against earthquakes,enhance the effect of heat preservation and energy conservation,and simplify construction methods.The hollow concrete shear wall abandons the clay brick,strengthens the energy conservation design,the self weight is light,the heat preservation is good.The prefabricated concrete structures is an extremely active form of structure in recent years.Nowadays,population has increased dramatically,resources have been lacking,and the environment has deteriorated.As a result,fabricated structures have emerged.The assembly structure simplifies the construction process of the house,reduces the difficulty of on-site management,and saves time and effort,which has become an inevitable trend of the development of housing industrialization.The state has repeatedly put forward the policy requirements for the development of fabricated buildings.Beijing,Shanghai,Shenzhen and other provinces and cities have issued specific implementation opinions.Nowadays,fabricated concrete structures have been used in various fields.Based on reading literatures,a new type of shear wall assembly hollow concrete shear wall is put forward in today's rapid development of fabricated buildings.The main contents of this paper are as follows:(1)To establish the finite element model of reinforced concrete shear wall with reference to theexisting reinforced concrete hollow shear walls which have been tested in the literature,and compare with the original literature test to verify the validity of the modeling process;(2)On the basis of the original experimental shear wall model,two groups of models are designed.The first group is solid concrete shear walls with post pouring edge members and hollow concrete shear walls with post pouring edge members,second groups of ordinary solid concrete shear walls and hollow concrete shear walls with holes on the edge,and a total of four shear wall finite element models,The ABAQUS finite element software is used to simulate the low cycle cyclic loading test,and the feasibility of the hollow concrete shear wall is analyzed through the hysteretic curve,the skeleton curve,the stiffness,the ductility and the energy dissipation capacity.The results show that the Aseismic Properties of the hollow concrete shear wall can reach the requirement,and the difference between the solid concrete shear wall and the concrete shear wall is small.Therefore,a new wall-assembled hollow concrete shear wall is put forward;(3)On the basis of one of the assembled hollow concrete shear walls,the ABAQUS finite element software is used to analyze the influence of the axial compression ratio,the reinforcement ratio of the edge members and the hole rate on the mechanical performance of the assembled hollow concrete shear wall.The results show that the ductility,deformation and energy dissipation capacity of the assembled hollow concrete shear wall meet the requirements according to the reasonable design of axial compression ratio,strength and other parameters,and the wall meets the design of seismicperformance;(4)the equivalent section of the hollow shear wall is transformed into the I-shaped calculation of the bearing capacity of the shear wall components,which is compared with the simulated values,and the results verify the accuracy of the calculation.