1207 超高強度繊維補強コンクリートを用いたU形下路桁の設計(SS2-3 施設・構造物技術,SS2 メンテナンス,コストダウン,J-Rail 2006)

概要

論文の詳細を見る
Ultra high strength Fiber reinforced Concrete (UFC) posses surprising mechanical properties so that no active reinforcement such as reinforcing bars is needed. This advantage makes it possible to reduce the dead weight of the structures. The design and construction recommendations for UFC have already been published by JSCE in 2004. The most achieved applications by UFC in Japan are now conducted by the brand name of Ductal originally developed in France. In this paper, the fundamental design method of U-shaped girder applying Ductal was clarified through the actual design process of a particular railway girder bridge. It was demonstrated that the U-shaped girder made with Ductal could reduce the dead weight by 50% compared with the ordinary concrete PC girder and also that its natural frequency is almost same as the ordinary concrete one. The margin of safety factor for twisting bearing capacity of the Ductal U-shaped girder with oblique angle was verified to be good enough.
一般社団法人日本機械学会の論文
2006-12-13