Prestressed concrete

[2090] EFFECTS OF PRESTRESSING METHOD ON FLEXURAL PERFORMANCE OF PCa BEAMS

Zheming HUANG¹, Kazumasa OKUBO², Junichiro NIWA² (1.Tokyo Institute of Technology, 2.東京工業大学)

Keywords:flexural performance、interface、joint connection、PCa beam、prestressing method

This paper proposes an engineering attempt to apply prestressing force at the interface in a PCa beam by using non-abutment pretensioning prestressing method (NAPP method). Static cyclic loading tests considering the existence of interface and prestressing force were conducted on three specimens. The results showed that prestressing method can effectively reduce the deflection and interface opening in PCa beams and improve the ductility and cracking resistance. Besides, the yielding load and ultimate flexural capacity of PCa beams were not affected by the interface and the prestressing force.