高铁桥跨繁忙干线铁路平转施工关键技术

Key Construction Technology for High Speed Railway Continuous Beam Level Swivel Crossing Existing Busy Main Lines

京沪铁路系繁忙干线铁路,京沪高速铁路沧德特大桥上跨该线,其施工难度和安全风险大。通过对该桥连续梁上跨既有线施工的重难点分析,在明确水平转体及空中合龙成桥的总体方案下,对施工关键技术和主要施工工艺与控制进行了阐述。

The Cangde Super Long Bridge of the Beijing-Shanghai high speed Railway overpasses the Jinghu Railway a main railway with a dense transporting, which is characterized by high construction difficulty and security risks. The Cang- de extra-large bridge just spans over this railway, this adds the construction difficulties and safety risks. By analysis of the importance and difficulty of continuous beam spanning over the existing line, the article explains the key construction tech- nology and main construction processes and control on the basis of the plan of level swivel and closure in the air.