道路改建工程下穿既有线铁路安全技术研究

Safety technology for road reconstruction projects passing under existing railway lines

摘要

玉林南客运枢纽至陆川北工业园区道路下穿既有线益阳至湛江铁路，因城市交通量增长，需要将原有的2-4.5m框架箱涵拆除后置换成2-8m框架桥，作为道路的右半幅，同时距原道路300m顶进2-8m框架桥作为城市道路的左半幅。结合该工程实例，从安全机构建立、监控监测、应力放散、线路加固与拆除、施工行车、防轨道电路联电、现场安全管理、工序过程控制等环节，总结了在不中断既有线铁路安全运营前提下，从事旧框架箱涵拆除与置换及新建框架桥的安全保障技术。

Abstract

The road from the passenger transport hub in the south of Yulin City to the industrial park in the north of Luchuan County passes under the existing railway line from Yiyang City to Zhanjiang City. Due to the increase in urban traffic volume, the original 2-4.5m frame box culvert needs to be removed and replaced with a 2-8m frame bridge as the right half of the urban road. At the same time, a new frame bridge with a jacking height of 2 to 8 meters is built 300 meters away from the original road as the left half of the urban road. Based on this engineering example, this paper summarizes the safety guarantee technologies for the demolition and replacement of old frame box culverts and the construction of new frame Bridges without interrupting the safe operation of existing railway lines, covering aspects such as the establishment of safety institutions, monitoring and surveillance, stress relief, line reinforcement and demolition, construction train operation, anti-track circuit connection, on-site safety management, and process control of procedures.

关键词

改扩建 / 铁路框架桥 / 顶进 / 置换 / 安全

Key words

Reconstruction and expansion / railway frame bridge / jacking / replacement / safety

参考文献

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