In order to study the behavior of Steel-concrete composite beams with different shear connection degrees, using finite element software ABAQUS, four models with different numbers of headed studs are established, all of which apply appropriate concrete and steel constitutive models, and contact relationship. The accuracy of finite element models is verified 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 different 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 effect of various parameters on the static response of composite beams. Finally, the applicable conditions and limitations of different 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.

为了研究不同剪力连接程度的钢-混凝土组合梁的性能，使用有限元软件ABAQUS，建立了四个具有不同数量的有头螺栓的模型，所有模型都应用了适当的混凝土和钢本构模型以及接触关系。通过将仿真结果与相应的梁测试在多个方面进行比较，验证了有限元模型的准确性，例如界面滑移，极限承载力，破坏模式和荷载应变分布。分析着眼于不同连接程度的组合梁的界面滑移发展，结果表明，设计组合梁时界面滑移很少成为控制条件。进行了进一步的参数研究，以研究各种参数对复合梁静响应的影响。最后，讨论了不同建模方法的适用条件和局限性。本文所使用的建模方法适用于模拟复合梁的静态性能，尤其是在研究界面滑移发展的过程中。