EngineeringMaterials EngineeringMaterials ScienceStructural AnalysisStructural EngineeringStructural MaterialsBending Of BeamsComposite MaterialsComposite StructuresFiber-reinforced CompositesStructural DesignStructural MechanicsComposite Beam AnalysisComposite Beam BendingComposite Beam TheoryComposite ConnectionsComposite Structural Systems
COMPOSITE BEAMS WITH WEB OPENINGS The purpose of this investigation was to study the behavior and develop an ultimate strength model for composite beams with rectangular web openings. Six composite beams with concentric rectangular web openings were tested to failure. Varying moment to shear ratios were used to help develop and verify the ultimate strength model. One steel beam was tested to demonstrate the contribution of the concrete to the capacity of composite beams. Two steel sections were used, while the concrete slab size was held constant for all beams. Three elastic tests were performed on each beam before it was tested to failure. An ultimate strength model was developed to predict the strength of composite beams at the web openings in the form of moment-shear inter-action diagrams. The steel is modeled as an elastic-perfectly plastic