盾构隧道下穿宁启铁路(南通站)工程技术方案分析

Analysis on Technical Scheme of Shield Tunnel underneath Nanjing-Qidong Railway(Nantong Railway Station)

结合南通城市轨道交通2号线盾构隧道下穿宁启铁路(南通站)实际工程,介绍了盾构隧道穿越宁启铁路股道、站台、雨棚柱、旅客出站地道以及铁路用房的设计方案,同时建立三维模型对盾构隧道穿越施工进行数值模拟,根据计算结果提出了一些穿越宁启铁路(南通站)的保护措施以及相关要求,确保盾构下穿施工时南通站的安全,为类似工程施工积提供工程经验。

Based on Nantong metro line 2 shield tunnel project,this paper introduces the design of shield tunnel underneath railway track,station,canopy,passenger export and railway building.At the same time,the finite numerical model of shield tunnel crossing railway track is established.According to the calculation results,some protection measures and relevant requirements for crossing Ningqi railway(Nantong station)are put forward to ensure the safety of Nantong station during shield tunnelling,providing experience for similar projects.