钢纤维混凝土在拱桥桥面加固中的应用

Application of Steel Fiber Concrete in the Reinforcement of Arch Bridge Deck

钢纤维混凝土克服了普通混凝土抗拉强度低、极限延伸率小、脆性等缺点,采用钢纤维混凝土进行桥面铺装可大大提高桥面的抗裂、抗弯、抗冲击及耐疲劳性,延长旧桥的使用寿命,降低拱顶荷载,施工简单易行等诸多优点,本文详细总结了在双曲拱桥及圬工拱桥桥面铺装改造的注意事项,为类似工程提供参考。

Steel fiber concrete overcomes the shortcomings of ordinary concrete,such as,low tensile strength,small ultimate elongation,brittle and so on.The use of steel fiber concrete for bridge deck pavement can greatly improve the crack resistance,flexural,impact and fatigue resistance to extend the life of the old bridge and lower the vault load,as well as its construction is simple.This article summarizes the notes of deck pavement reconstruction of hyperbolic arch bridge and masonry arch bridge,to provide reference for similar projects.