Abstract
Static load experiments with continuous beam models and nonlinear analysis with comparative design bridges were carried out. The results revealed that the girder with tendons of large eccentricity exhibited flexural capacity with equivalent to conventional girder's with tendons laid inside of the girder height, and held superior shear carrying performance by remarkable increase of tensile stress in external tendons under ultimate load conditions. Therefore large eccentricity external tendon systems can reduce the quantity of external tendons and shear reinforcing steels.
Prestressed concrete bridges of various forms and span length were also studied individually. It was confirmed that extradosed bridges are superior in regard to the economy in span length within 225 m.
