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文章结合北同蒲增四线DK59+759跨大运高速公路特大桥1~96 m钢桁梁实例,从钢桁梁施工对高速公路的影响分析入手,对施工作了总体安排,详细阐述了对高速公路的防护,重点对高速公路的导改作了分析、制定了科学、合理的导改方案和安全防护措施,并制定了周到的应急预案。作者以该工程为例对交通导改进行了探讨,旨在对今后类似新建铁路上跨既有公路的施工起到借鉴作用。
Based on the analysis of steel truss girders 1 ~ 96 m on DK59 + 759 across DaYun Expressway, the paper analyzes the impact of steel truss girder construction on expressway, and makes a general arrangement of the construction, and elaborates in detail The protection of the expressway, focusing on the guidance of the highway made an analysis of the development of a scientific and reasonable guidance and reform programs and safety protection measures, and developed a comprehensive emergency plan. Taking this project as an example, the author discusses the traffic diversion, aiming to serve as a reference for the construction of a cross-existing highway on a similar newly-built railway in the future.