Model of a beam-containing composite element for reinforced concrete plane problems

reinforced concrete;  finite elements;  beam elements;  Planar element model

The steel bar in concrete is simulated as a beam element that can withstand axial force and resist bending deformation, and under the basic assumption that the displacement of the beam element node obeys the displacement field of the plane element, the model of reinforced concrete plane composite element containing reinforced concrete beam element at any position in the element is established by applying the principle of virtual work. Compared with the existing reinforced concrete planar element model, this model reflects the mechanical properties of the steel bar more accurately and comprehensively, the position of the steel bar in the planar element no longer has any limitation, and the concrete and steel bar can be meshed independently, which provides convenience for the discretization of the unit.