Abstract
In the PC precast segmental beams using external cable method, the longitudinal reinforcements are not fixed continuously. Therefore, the deformations are concentrating only at the joints. This is the major difference in behavior compared to normal concrete structures. To clarify the influence due to deformation of the joint on the PC precast segmental beams, an experimental study was carried out, and also supplemented by an analytical approach and comparison was made with the experimental result. As a result using the analytical approach, both the experimental and analytical data agreed well on the flexural behavior till ultimate failure. Moreover, computation equations were proposed using the numerical method on span/depth ratio, loading system, dimension of segment, location of deviator and strength of concrete.
