The work presents the parametric study of a steel–concrete composite beam with composite dowel connectors. The designed beam is located in a highly loaded warehouse ceiling with a useful load of 20 kN/m². In the first part of the work, the best solution of the composite dowel beam was selected from among 7 variants. The parameterization of the composite beam was made on the basis of the following parameters determined by numerical calculations: mass of the steel part, vertical deflection of the beam, stresses in the steel and concrete, and the character of concrete cracks. Then in the second part of the work, the best variant of the beam with composite dowels was compared with the commonly used solution of a composite steel–concrete beam with headed stud connectors. In the numerical model, the finite element method was used to describe the influence of mechanical loads on the strains and stresses in the floor beam. Numerical calculations were made using the ADINA System based on FEM. A model was built from 3D-solid elements. However, the reinforcing bars were modelled with truss elements (rebar elements). The applied boundary conditions reflected the freely supported composite beam. The advanced concrete model available in the ADINA System program was used to simulate concrete, assessing the possibility of concrete cracking.

这项工作介绍了带有复合销钉连接件的钢-混凝土组合梁的参数化研究。设计的梁位于一个高负荷的仓库天花板上，有效载荷为 20 kN/m ². 在工作的第一部分，从 7 个变体中选择了复合木榫梁的最佳解决方案。组合梁的参数化基于通过数值计算确定的以下参数：钢部件的质量、梁的垂直挠度、钢和混凝土中的应力以及混凝土裂缝的特征。然后在工作的第二部分，将带有复合销钉的梁的最佳变体与带头螺栓连接件的钢-混凝土复合梁的常用解决方案进行了比较。在数值模型中，采用有限元方法来描述机械载荷对地板梁中应变和应力的影响。使用基于 FEM 的 ADINA 系统进行数值计算。模型是由 3D 实体元素构建的。然而，钢筋采用桁架单元（钢筋单元）建模。应用的边界条件反映了自由支撑的组合梁。ADINA 系统程序中可用的高级混凝土模型用于模拟混凝土，评估混凝土开裂的可能性。