The Research On Connection Structure And Force Performance Of Assembly Structure

In this paper,the existing assembly structure connection form is summarized,including the connection of the assembly shear wall and the connection form of the precast concrete frame beam column joint.The advantages and disadvantages of them are compared and analyzed.For the connection of the assembled structure,the strength component shall include the concrete and the steel bar connection.In this paper,the bond strength theory of new and old concrete is studied,and the bond model of new and old concrete is introduced.The shear strength and shear capacity of new and old concrete joint are analyzed.Introduces several prefabricated shear wall joints and prefabricated frame joints connecting forms,including: bolt connection,mechanical connection,sleeve connection and preformed hole grouting anchor connection and welding connection,connecting bracket.The structural forms of these connections are analyzed,and the connection methods and the application scope of these connections are introduced.The finite element software ABAQUS was used to simulate the model of the shear force of the assembled shear wall,which is made up of the metal bellows connected by the buckle.The performance of the structure is analyzed by simulating the hysteretic behavior and the skeleton curve of different reinforcement ratio,axial compression ratio and concrete strength.By using the finite element software ABAQUS to simulate the precast concrete beam column joints of a tenon flange connection,the effect of different bolt distribution on the behavior of joints are analyzed.