Finite Element Modeling of Steel-concrete Composite Beams with Diff erent Shear Connection Degrees

다국어 초록 (Multilingual Abstract)

In order to study the behavior of Steel-concrete composite beams with diff erent shear connection degrees, using fi nite element software ABAQUS, four models with diff erent numbers of headed studs are established, all of which apply appropriate concrete and steel constitutive models, and contact relationship. The accuracy of fi nite element models is verifi ed by comparing the simulation results with corresponding beam tests in multiple aspects, for instance, the interface slip, the ultimate capacity, the failure modes and the load-strain distribution. The analysis focuses on the interface slip development of composite beams with diff erent connection degrees, and the results show that the interface slip seldom becomes the control condition when designing composite beams. A further parametric study is performed to investigate the eff ect of various parameters on the static response of composite beams. Finally, the applicable conditions and limitations of diff erent modeling methods are discussed. The modeling method used in this paper is suitable for simulating the static performance of composite beams, especially in the investigation of the interface slip development.

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