Patent ID: 7107730
Filing Date: 2006-09-19
Classification: E04C

Abstract:
1. A prestressed steel and concrete complex girder comprising: a section shape steel structure formed of a combination of one or more section shape steel, a tension means for tensioning the section shape steel structure including a tensional member configured to provide the structure with a predetermined camber, and concrete disposed in an inner space portion of the section shape steel structure, wherein the section shape steel structure is formed as a box type section shape steel assembly which includes a plurality of section shape steel welded together at sides thereof; and wherein in the tension means, settlement fixing plates are respectively fixed to both end portions of each section shape steel which forms the section shape steel structure, both the end portions of the tensional member extending through holes in the settlement fixing plates to the outside of the section shape steel structure, the holes being on both settlement fixing plates; and wherein between the respective fixing plates, steel strengthening plates for preventing buckling among a web and upper and lower flanges are respectively joined to the web and a plurality of sheer prevention members are connected to the inside of the web, and steel reinforcement is arranged in the inner space portion of the section shape steel through the concrete.