Behavior of Stud under Monotonic and Cyclic Loading Based on FEM Simulation

The steel-concrete composite structure can give full play to the material advantage of steel and concrete. This is why steel-concrete is widely used in building construction of bridges, industrial buildings and skyscrapers. Steel-concrete composite structures are generally jointed by stud connectors to transfer shear. But the study about the stud´s mechanical performance and mechanism is still inadequate. The study about the mechanical properties of cracked stud is especially lacking. As a result, steel-concrete composite structure can be defected and investment in the structure may be wasted. This paper, however, tries to explore mechanical performance of studs under different conditions, using numerical analysis based on the finite element method. First, existing test results are collected. The test results are then employed to measure the degree of compliance between mechanical model and actual structure. Finally, the curves of load-slip under cyclic loading are analyzed according to a model created for this purpose.