预应力混凝土连续箱梁体外预应力加固效果研究

Study on External Prestressing Reinforcement Effect of Prestressed Concrete Continuous Box Girder

结合实际案例,对某采用体外预应力加固的混凝土连续箱梁进行荷载试验,分析加固后箱梁在试验荷载作用下的动静态性能及裂缝发展状况,判断加固效果,并为后续该类结构形式桥梁加固提供参考。

In this paper,a concrete continuous box girder strengthened by external prestressing is tested under load.The dynamic and static performance and crack development of the strengthened box girder under test load are analyzed,and the reinforcement effect is judged,which provides a reference for the subsequent reinforcement of this type of structural bridge.