摘要
在既有盾构隧洞上方进行隧道U型槽施工,会使下卧盾构隧洞变形。为确保盾构隧洞运营安全,文章结合岩土有限元分析软件,依托某城市隧道U型槽工程,研究地层加固及U型槽开挖卸荷加载过程对下卧盾构隧洞的变形影响,选择合理的盾构隧洞保护方案,为类似工程提供参考。分析表明,该工程采用的盾构隧洞保护方案可有效地控制盾构隧洞变形。
The construction of tunnel U-shaped groove above the existing shield tunnel will cause the deformation of the underlying shield tunnel.In order to ensure the safety of shield tunnel operation,combined with geotechnical finite element analysis software,relying on a city tunnel U-shaped groove engineering,the influence of stratum reinforcement and U-shaped groove excavation unloading and loading process on the deformation of the underlying shield tunnel is studied,and a reasonable shield tunnel protection scheme is selected to provide reference for similar engineering.The analysis shows that the shield tunnel protection scheme adopted in the engineering can effectively control the deformation of the shield tunnel.
作者
张建毅
ZHANG Jianyi(Hangzhou Institute of Communications Planning Design&Research Co.,Ltd.,Hangzhou 310006,Zhejiang,China)
出处
《工程技术研究》
2023年第13期228-230,共3页
Engineering and Technological Research
关键词
U型槽
盾构隧洞
变形影响
U-shaped groove
shield tunnel
deformation influence
