Analysis and Design of Composite Girder with Curve for DFC Loading with STADD Pro

Composite concrete structures are where different materials are bonded to the concrete to form a combined structural shape. The most common example is when a reinforced concrete deck slab is poured on top of a prefabricated beam. The beams are usually concrete girders or steel beams. Here we design a composite girder length 31.9 m (c/c of bearing) with 2.34° curve for DFC loading according to RDSO drawing with 0° curve. In this design we analysis self-weight and live load manually and SIDL, WC and Construction load from Stadd Pro software. Generally, when I observed that in curve bending moment changes in every point but in straight girder, bending moment change after some intervals. When we use curved girder we fabricate in curve and also increase that property. At construction stage all the loads (green concrete weight of slab, self-weight of girder, weight of shuttering) will be taken by non-composite section - only steel girder. Superimposed dead load and live loads are to be taken care of by the composite section. The cross girders / cross bracings shall be analysed and designed as simply supported members to avoid complicated connection details. In case of dead load, superimposed dead load and live load analysis, composite section properties of girders have been determined considering concrete as uncracked. I am changing the curved girder into the straight girder for that cases we provide two extra end stiffener and increase the grade of concrete. That causes our designed will be safe.