摘要
近年来有多座连续梁出现跨中下挠、腹板或底板裂缝、承载力不足等病害,危害到桥梁结构和桥面车辆通行安全,需要进行加固处理。体外预应力计算理论和施工技术日趋完善,被广泛应用于连续梁加固施工项目。文章通过某工程实例阐述体外预应力加固技术中的几个关键问题,并结合实际加固效果对该技术进行分析,为今后类似项目提供参考。
In recent years, the diseases with deflection in mid span, cracks in floor or web and lack of bearing capacity appear in many continuous beams, and produce harm to the structure of the bridge and the vehicle safety. So the reinforcement of the bridge is necessary. The calculation theory and construction technology of external prestressing are becoming more and more perfect, which is widely used in the reinforcement project of the continuous beam. This paper expounds some key problems in the technology of external prestressing reinforcement by the engineering example, and analyzes the technology in combination with the actual reinforcement effect, which provides reference for similar projects in the future.
出处
《现代交通技术》
2016年第6期72-75,共4页
Modern Transportation Technology
关键词
连续梁
体外预应力
加固施工
施工监控
continuous beam
external prestressing
reinforcement construction
construction monitoring
