可拆装混凝土桥梁护栏基础及纵向连接结构形式研究

为满足改扩建工程对桥梁护栏可拆装且满足一定防撞等级的要求，对可拆装混凝土护栏基础形式和纵向连接结构形式进行专门研究。综合考虑受力整体性和拆装方便性，提出地脚螺栓连接、外嵌式、内嵌式和钢筋焊接四种基础方案以及混凝土企El、背部型钢和传力杆三种纵向连接方案。通过计算机仿真分析和台车试验，结合施工方便性分析，进行方案比选，可知焊接钢筋基础和背部型钢连接为最优方案。

Research on Foundation and Longitudinal Connection Structure for Detachable Concrete Bridge Barrier

To meet the requirements of construction convenience and protection level for concrete bridge barrier of re construction project, in this article, researches on foundation forms and longitudinal connection structure forms of de tachable barrier have been conducted. Considering integrity and convenience of detaching and re - installing, four kind of foundation forms such as anchor bolt connected foundation, outside attached foundtion, inside embedded foundation and steel bar welded foundation, as well as the three kind of longitudinal connection structure forms such as concrete tongue - and - groove, backside section steel and dowel steel have been put forward Through ysis and bogie test, and on the basis of analysis on construction convenience, as the result of ded foundation and backside section steel appear to be the best option. computer simulation anal comparison, steel bar welded foundation and backside section steel appear to be the best option.