긴장재 절곡에 의한 긴장력 손실에 관한 실험연구

Abstract

Engineering method using a PSC girder is inexpensive and convenient for maintenance control, compared to those of others. Generally, PSC girders, used for middel and short span lengths, are kept developed in variety form of technologies, as require of advancement of materials and demand of society. PSC girders, nowadays, in under control which have to be lengthened. The reasons for this phenomenon are securing discharge capacity and clear span expasion of overpass bridge, caused by abnormal climate. To satisfy these needs what important is that measurement of tensible force of girder. Thus, prestress loss according to the friction force at a joint caused by continuation of prestressed concrete girder will be established in this thesis.