综合考虑环境、施工条件、水平推力和桥梁损伤等因素,成功拆除了一座大跨径斜腿刚构桥-陇西互通主线三号桥。文章根据该桥拆除的工程背景、工程特点、施工难点及重点,总结了大跨径斜腿刚构桥拆除的方案设计、贝雷支架搭设技术以及斜腿打断技术,为今后类似拆除工程提供参考。 Considering the environment, construction conditions, horizontal thrust and bridge damage and other factors, successfully demolished a large span diagonal leg rigid frame bridge - Longxi Interchange main line on the 3rd bridge. According to the engineering background, engineering features, construction difficulties and key points of dismantling of the bridge, the article summarizes the design of the disassembly of the long-span inclined rigid-frame rigid-framed bridge, the erection of the Bere stent and the technique of breaking the inclined leg to provide the similar demolition project reference.