METHODS OF MANUFACTURING A PRESTRESSED COMPOSITE GIRDER USING STEEL TUBE OF INJECTING CONCRETE

摘要

The invention discloses a kind of building combination beam and its manufacturing methods. More specifically, tectonic association beam is round or gusset joint steel pipe, and steel pipe out low surface is by welding fastening tendon installation space joint filling concrete and describes prestressing force; Girder ball is configured to pass through welded connecting by connecting the upper bottom bridge surface armor plate that is late; Tendon is mounted, and concrete injects steel pipe and round or gusset in the space between the lower surface being combined into, to increase the beam of bending stiffness and an effective sectional area; Prestressing force is directed through tension process tendon and the effect for improving utilization efficiency a member stress reduction caused by beam is arranged in; It can be applied to longspan structure with said combination beam. ;The 2016 of copyright KIPO submissions