摘要
以某高速公路跨线桥改造工程为背景,阐述了工字钢-混凝土板组合梁桥的结构设计及其特点,运用允许混凝土桥面板产生裂缝的设计理念,通过采取合理的施工顺序和配筋设计等措施,减小了中墩桥面板负弯矩大小,控制了桥面板裂缝宽度,提高了结构的耐久性,为同类桥梁设计提供参考。
Based on the renovation project of the overpass bridge in freeway, this paper described the design and features of steel- concrete composite bridge. By use of the design theory of the allowable cracks of concrete bridge deck, it adopted the reasonable construction order and design of reinforcing bars in order to reduce the negative moment and control the width of bridge deck cracks. The result showed that the durability of the bridge structure had been improved. This method could be taken as a reference for the similar bridge design.
出处
《现代交通技术》
2016年第2期58-60,共3页
Modern Transportation Technology
关键词
钢-混组合梁
混凝土桥面板
裂缝
负弯矩
steel-concrete composite beam
concrete bridge deck
crack
negative moment
