现代交通技术2026，Vol.23Issue(1)：23-28,6.
超小净距盾构下穿既有铁路隧道影响分析
Impact Analysis of Shield Tunneling with Ultra-small Clear Distance Under-passing Existing Railway Tunnels
田鲁鲁 1张智1
作者信息
- 1. 云南省建设投资控股集团有限公司,昆明 650501
- 折叠
摘要
Abstract
Based on the ultra-small clear distance shield tunnel project of Nanning Metro Line 4 passing beneath the Chalu Tunnel of the coastal railway,the finite element software midas GTS NX was used to analyze the construction process of the shield tunnel and rail reinforcement works at the intersection.The research results indicate that without reinforcing the ex-isting railway track and tunnel,the maximum surface settlement value is 6.5 mm,the maximum settlement value at the rail is 3.91 mm,and the maximum vertical differential settlement value of the rail structure along the track direction is 2 mm/10 m,and the maximum settlement value of the railway tunnel structure is 4.73 mm,so the deformation values and the lin-ing structure forces meet the requirements.After adopting the treatment measures of"3-5-3 rail fastening reinforcement",the maximum settlement value of the track was significantly reduced(from 2.6 mm to 0.4 mm).The successful implementation of the underpass project demonstrates the rationality and effectiveness of the engineering solution,and the research findings can serve as a reference for similar projects.关键词
盾构隧道/既有隧道/数值分析/扣轨加固Key words
shield tunnel/existing tunnel/numerical simulation/rail fastening reinforcement分类
交通工程引用本文复制引用
田鲁鲁,张智..超小净距盾构下穿既有铁路隧道影响分析[J].现代交通技术,2026,23(1):23-28,6.
