Estimation of Internal Prestress Loss by External Prestressing Method on PSC Girder

Due to deterioration of bridge, usually be using the external prestressing method among repair reinforcement method. But, there is much to be desired about a detailed account, almost it has analysed by cambers of girders, deflections of middle span and upper, bottom stresses of girders. Also, it is not examined closely that effect of internal prestress by external prestressing. The purpose of this study is confirmed the effect of internal tendons by external prestressing, estimation of additional external prestressing force and look for exact external prestressing force.

외부긴장재 도입공법을 적용한 PSC거더의 내부프리스트레스 손실량 추정