Because this method places PS steel materials higher than the effective height of members in the form of external tendon (cable) at the top of low tower in the bridge upper structure, axle force and moment are introduced and efficiently reduce the force of member created at the upper sectional area.
Railway bridge application
This is concrete bridge can be applied the 100m front and rear of span length, which was hard to be applied on railway bridges except special steel bridge. It shares structural behavior not only to concrete girders but also to cables, so that bridge span can be longer. As results, this method provides an opportunity to step up the level of domestic railway bridge construction.