大跨径连续刚构桥梁的体外预应力施工工艺

External Prestressed Reinforcement Processing Technology for Long-span Continuous Rigid Frame Bridge

大跨径桥梁在现代桥梁建设中发挥了重要作用,但是由于各种原因,许多桥梁出现了裂缝、挠度过大等病害。以安康关庙汉江大桥加固工程为例,介绍连续刚构桥梁体外预应力加固法的检测、设计、施工、监控等各个环节的关键技术,可为大跨径连续刚构桥梁的加固积累宝贵的经验。

Long-span bridge plays an important role in modern bridge construction. But because of various reasons, many bridges occur such disease as cracking, excessive flexivity, etc. Taking the reinforcement engineering of Hanjiang bridge in Guanmiao town of Ankang city for instance, the key technologies of every tache such as test, design, construction and monitoring of external prestressed reinforcement method of continuous rigid frame bridge are introduced, which accumulates valuable experiences for the reinforcement of long-span continuous rigid frame bridge.