高速載荷を受けるポストテンションPRCはりの動的曲げじん性に関する実験的考察

Abstract

This paper presents an experimantal study on the dynamic flexural toughness of post-tension prestressed reinforced concrete beams. The elastic plastic behavior and the flexural toughness of the pretension prestressed concrete beam, the pretension prestressed reinforced concrete beam and the post-tension prestressed reinforced concrete beam were evaluated and compared by the static and high speed loading tests. Under the static loading condition and the same flexural strength of beams, the ultimate deformation of the post-tension prestressed reinforced concrete beam is clearly larger than those of the pretension prestressed reinforced concrete beam and the pretension prestressed concrete beam. On the other hand, although the order of the ductility in case of high speed loading test is not different from that of static loading test, the ultimate deformations in the high speed loading became smaller than those of the static loading.