钢箱梁顶推施工技术研究

Brief Introduction of Steel Box Girder Jacking Construction Technology

在顶推法施工过程中,桥梁的体系转换频繁,结构受力比其他施工方式复杂,施工安全风险也随之增大,因此,选择适用于钢箱梁安全有效的顶推施工方案和施工技术尤为关键。论文结合春江枢纽A匝道桥钢箱梁顶推施工,对顶推施工方案进行了精细化划分,并从关键技术、施工流程、施工控制等方面对顶推施工技术进行系统介绍。

In the process of jacking construction,the bridge system is frequently changed,the structural force is more complicated than other construction methods,and the construction safety risk is also increased.Therefore,it is particularly critical to select the safe and effective jacking construction scheme and construction technology suitable for steel box girder.Based on the steel box girder jacking construction of A ramp bridge in Chunjiang Junction,the paper divides the jacking construction scheme and introduces the jacking construction technology systematically from key technology,construction process and construction control.