Finite element anaylsis of multi-span composite steel-concrete beams subjected to combined flexure and torsion

Composite steel-concrete construction is more preferred by engineers due to their advantages against traditional reinforced concrete and steel construction. In some situations, the composite steel-concrete beams could be subjected to flexure and torsion and there is no rational design method available in any international standards. Therefore, this paper has proposed a finite element method that can be used to simulate the structural behavior of composite steel-concrete subjected to combined flexure and torsion. Eight test specimens with both full and partial shear connection were tested to failure with different load combinations of flexure and torsion. Comparing the strength capacity, there is reasonably in agreement between the experimental and finite element analysis results