悬臂梁牛腿预支撑加固技术研究

Research on pre support reinforcement technology of cantilever bracket

带悬臂梁牛腿结构连续刚构桥梁,在运营期间由于重载(超载)车辆及车辆冲击作用影响,容易出现结构受力裂缝。针对该类结构特点,结合实际工程,对牛腿病害的形式、病害产生原因以及加固技术进行了深入研究,提出了多种加固方案,方案均可以有效减少牛腿结构内部受力,同时对牛腿结构提供有效支撑,保障牛腿结构以及桥梁的安全。

The continuous rigid frame bridge with cantilever corbel structure is prone to structural stress cracks due to the impact of heavy(overloaded)vehicles and vehicles during operation.According to the characteristics of this kind of structure,combined with the actual project,this paper makes an in-depth study on the form,cause and reinforcement technology of corbel disease,and puts forward a variety of reinforcement schemes,which can effectively reduce the internal stress of corbel structure.At the same time,it can provide effective support for the corbel structure and ensure the safety of the corbel structure and the bridge.