Mechanical Behavior of Steel-Concrete Composite Beam Using Hat Shaped Steel Section

Abstract

Steel-Concrete composite beam (SC beam) using hat shaped steel section has been developed by authors. Appling the beam makes it possible to reduce or omit shear reinforcements, reinforcements for web openings and concrete form shorings. These advantages lead to reduction of construction cost and labor saving. In this study, loading tests of SC beam using hat shaped steel section are conducted to verify the structural performance of initial state to ultimate state. This paper also proposes evaluation methods for allowable strength under longterm loading and ultimate strength. It is verified by comparing with loading test results that the proposed evaluation methods are reasonable.