WEB MEMBER OF COMPOSITE TRUSS GIRDER AND NODE CONNECTING STRUCTURE OF COMPOSITE TRUSS GIRDER USING THE SAME

摘要

A web member of a composite truss girder includes a steel tube, and an additional structural steel is disposed in the steel tube. The steel tube and the structural steel are structurally integrated at an end of the web member to share a sectional force applied to the web member with magnitudes intended by a designer. The steel tube is filled with concrete to improve a resistance of the web member against an axial force and a moment applied to the web member. As a result, manufactured steel tubes with one dimension may be used as web members of the entire bridge, thereby saving a cost for purchasing the steel tubes, reducing a manufacture cost by simplifying the node connecting structure and improving an appearance by using the steel tubes of regular size.