A Study on the Mechanical Behavior of Precast Concrete Shear Wall Structure with Hybrid Connection of Section Steel
A new type of steel hybrid connection is proposed by utilizing the advantages of reinforced concrete structure and steel structure.Shear wall models were generated by using finite element software ABAQUS and verified by using the experiment results.The mechanical properties of shear walls with hybrid connections of section steel were investigated under low reversed cyclic loads.The failure mode,deformation curve and characteristic bearing capacity of the model were analyzed,and the influence of material strength,axial compression ratio,number of connectors,and section height of steel on the mechanical properties of the new prefabricated shear wall structure were explored.The result indicates that the failure mode of prefabricated shear wall is a bending failure,and the steel connector remains intact during the failure,which achieves the goal of"strong connection,weak wall limb".This hybrid connection has a better bearing capacity,ductility and stiffness.The axial compression ratio has a significant impact on the bearing capacity of the shear wall,and the ductility of the shear wall can be effectively improved with the increase in the spacing of the hybrid connections.A calculation formula of shear demand bearing capacity in the steel hybrid connection is proposed and compared with the calculated values of domestic and foreign codes.Compared with the simulated values,the errors of the calculated values of the formula and the calculated values from BS EN 1992 European code are within 15％and 20％,respectively,which can provide a reference for the design of steel hybrid connection.
国家科技期刊平台
NSTL
万方数据
