PRESTESSED COMPOSITE BEAM HAVING PROFILED STEEL WEB

摘要

PURPOSE: A prestressed composite beam with a profiled steel web is provided to improve resistivity to twisting and buckling by synthesizing a steel material and concrete. CONSTITUTION: A prestressed composite beam with a profiled steel web comprises a steel beam, concrete(20), tendons, anchorage devices(40), bending devices, and space retainers(60). The steel beam is formed by welding and coupling a pair of web plates(110a,110b) and a lower plate(120). Inside of the steel beam is filled with concrete. The tendons are constituted so that the compressive force is applied to the concrete in advance. The anchorage devices settle the tendons. The bending devices bend the tendons in order to efficiently resist the external force applied to the steel beam. The space retainers prevent the web plates from getting wider when the concrete is placed.