体外预应力在T型刚构桥加固中的应用

The application of T-rigid-frame Bridge Reinforced by External Prestressd

以中卫黄河公路大桥主桥为例,对桥梁产生的病害进行分析,提出了针对该桥的加固维修方案,得出了体外预应力加固T型刚构能增大主梁压应力储备,提高桥梁承载力。为今后该体系桥梁的加固设计提供参考。

Based on the main bridge of Zhongwei Yellow River highway bridge,analyzed the main disease of the bridge,and proposed the maintenance plan for the bridge reinforcement,it is concluded that the t-rigid-frame bridge reinforced by external prestressd can increase girder compressive stress and the bearing capacity of bridges. It is provide a design reference of the system bridge reinforcement for the future.