双孔大跨度公路框架桥顶进下穿既有铁路线施工技术研究  

Research on the Construction Technology of Double-span Large-span Highway Frame Bridge Crossing the Existing Railway Line by Jacking

作　　者：窦晓曦 DOU Xiao-xi(China Railway 12th Bureau Group First Engineering Co.,Ltd.,Xi'an 710038,China)

机构地区：[1]中铁十二局集团第一工程有限公司,西安710038

出　　处：《价值工程》2023年第27期68-70,共3页Value Engineering

摘　　要：本文主要介绍了在武深高速公路下穿赣韶铁路框架桥施工中,由于该框架桥顶进下穿既有铁路,施工技术难度高,对既有铁路行车干扰和安全影响大。为确保既有铁路运营安全,项目部对顶进方案进行认真编排,同时对施工工序进行合理规划。通过一系列举措,确保了既有营业线的安全运行,顶进后的桥位等参数也满足有关要求。该双孔大跨度公路框架桥顶进下穿既有铁路线施工相关技术也为后续类似施工提供了借鉴和参考。This paper mainly introduces the construction of the frame bridge of the Ganshao Railway under the Wuhan-Shenzhen Expressway.Because the frame bridge is jacked into the existing railway,the construction technology is very difficult,which has a great impact on the traffic interference and safety of the existing railway.In order to ensure the operation safety of the existing railway,the Project Department carefully arranges the jacking scheme and reasonably plans the construction process.A series of measures have been taken to ensure the safe operation of the existing business lines,and the parameters such as the bridge position after jacking also meet the relevant requirements.The construction technology of the double-span large-span highway frame bridge jacking through the existing railway line also provides reference for similar construction.

关 键 词：双孔框架桥 既有铁路 顶进 安全 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]