| In recent years,C hina has attached great importance and strongly supported the development of prefabricated buildings.At the same time,compared with reinforced concrete structures,many advantages such as higher bearing capacity and better ductility.Therefore,his paper proposes a prefabricated steel-reinforced concrete joint,and the steel joints in the joint area are all connected by bolts.In this paper,the ABAQUS finite element software is used to establish a numerical model of prefabricated steel reinforced concrete joints with various types of prefabricated prefabricated joints.The main research contents are as follows:(1)This paper designs the test model of prefabricated reinforced concrete joints in consideration of the failure form of assemb led joints,the convenience and efficiency of on-site construction,and the reliability of joints.At the same time,considering the limitations of research tools and methods,the test model is simplified and applied ABAQUS establishes a numerical model to analyze the mechanical properties of the node.(2)The use of ABAQUS finite element software to establish a prefabricated steel frame joint reinforced concrete node,edge node,ordinary reinforced concrete node and edge node numerical model.The low-cycle reciprocating load is applied to the beam end to analyze and compare the concrete,steel-steel-reinforcement stress change,plastic strain accumulation,failure form and mechanical properties of the two types of nodes,so as to reflect the mechanical properties of the steel-reinforced concrete joints Superiority.(3)In this paper,12 different types of prefabricated prefabricated steel-reinforced concrete joint and edge joint numerical models were established.Through comparative analysis of comparative tests,the concrete strength grade,axial compression ratio and the length of reinforced concrete section in the beam were compared to the precast The influence of mechanical properties of reinforced concrete joints of fabricated steel-bonded joints. |
