構造物調査・診断 (1)

[V-215] A study on PC steel soundness survey of existeng post-tension bridge

*高野 真史¹、石橋 健作¹、和崎 宏一²、片野 洋輔² (1. 中日本ハイウェイ・エンジニアリング名古屋、2. 中日本高速道路)

Keywords:PC steel soundness survey, PC steel bar, PC grout filling problem, Corrosion / fracture of PC steel material

The Post Tension Bridge, which had an old construction date, was caused by insufficient PC grout filling because the PC grout material at that time, the construction method, construction machinery, etc. were not immature and the complete PC grout was not filled The problem of corrosion / rupture of the PC steel which has been made has become obvious. In this report, we conducted a survey on the soundness of PC steel materials by sampling survey on the method of investigating PC grout filling status of post tension bridge with poor performance and the presence or absence of rupture of PC steel material, and reported on the result of examining the applicability of the investigation method .