초록

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Abstract ▼ AI-Helper

This study focused on comparing the F.C.M(Free Cantilever Method) and combination of the crane method and F.C.M by considering displacement. As a result of this study, F.C.M had the advantage to control the displacement because the displacement of the prestressed composite truss girder using F.C.M i...

This study focused on comparing the F.C.M(Free Cantilever Method) and combination of the crane method and F.C.M by considering displacement. As a result of this study, F.C.M had the advantage to control the displacement because the displacement of the prestressed composite truss girder using F.C.M is much lower than using it in combination with the crane method. The disadvantage of F.C.M is the diminished quality of welding and safety when the bridge is placed on high elevation. The combination of the crane method displace lower stresses than the F.C.M because F.C.M is a total cantilever structure. But the combination of crane method and F.C.M could create problems such as unbalanced partial moment during pulling up the steel girder(105 m, 250 ton). It could cause serious deformations of the structure. As a result, F.C.M is a better method to build a prestressed composite truss girder.

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