深大基坑开挖对石家庄地铁3号线的变形研究
Study on the Deformation Characteristics of Deep Foundation Pit Excavation on Shijiazhuang Metro Line 3
摘要: 为探究新建深大基坑对既有区间隧道的影响，本文以石家庄地铁3号线新百广场站–东里区间为研究对象，采用迈达斯数值模拟软件，建立了基坑–地层–隧道的三维有限元模型，再结合现场实测数据，且验证模型后，指出了新建基坑开挖过程中隧道的变形规律及机理，旨在为类似工程提供参考，确保隧道的结构安全和正常运营。
Abstract: In order to explore the influence of the new deep foundation pit on the existing tunnel, this paper takes the Xinbai Square Station-Dongli section of Shijiazhuang Metro Line 3 as the research object, and uses Midas numerical simulation software to establish a three-dimensional finite element model of foundation pit-formation-tunnel. After combining the field-measured data and verifying the model, the deformation law and mechanism of the tunnel during the excavation of the new foundation pit are pointed out, which aims to provide a reference for similar projects and ensure the structural safety and normal operation of the tunnel.
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