Research on Design Methods for Steel-concrete Composite Beams With Whole Openings in Concrete Flange

摘要

In practice,in order to satisfy the function requirements of structures,openings often exist in the concrete flange of composite floors. The strength and rigidity of steel-concrete composite beams are reduced by the openings,and local stability problem also exist. Based on experimental results and theoretical model,mechanical behavior of composite beams with openings in concrete flange is analyzed, including ultimate static capacity, elastic rigidity and local stabil ity. The design method for composite beams with openings in concrete flange is also proposed and suitable for prac tical design.