新建建筑物群对大直径盾构隧道结构安全影响研究  

Research on the Impact of Newly Built Buildings on the Structural Safety of Large Diameter Shield Tunnels

作　　者：王如磊 WANG Ruei(China Railway SIYUAN Survey and Design Group Co.,Ltd ,Wuhan 430063)

机构地区：[1]中铁第四勘察设计院集团有限公司隧道院,武汉430063

出　　处：《铁道勘测与设计》2024年第1期71-74,共4页Railway Survey and Design

摘　　要：临近隧道的地面建筑物建设,会引起隧道周边土体的应力释放,从而诱发隧道结构变形和内力变化,严重时甚至会造成隧道衬砌结构开裂,威胁运营安全。本文以数值计算的方式,模拟了师大附中施工过程中不同阶段下天祥大道隧道结构、内力变化情况。研究结果表明师大附中在不同施工阶段,均引起了天祥大道隧道衬砌结构位移变形和内力变化,但变化值均较小,在安全控制值以内,表明师大附中的建设对天祥大道隧道安全性影响较小。The construction of ground buildings near the tunnel can cause stress release in the surrounding soil,leading to structural deformation and internal force changes in the tunnel.In severe cases,it can even cause cracking of the tunnel lining structure,posing a threat to operational safety.This article simulates the structural and internal force changes of Tianxiang Avenue Tunnel at different stages during the construction process of Shida Affiliated Middle School through numerical calculation.The research results indicate that Shida Affiliated Middle School has caused displacement deformation and internal force changes in the lining structure of Tianxiang Avenue Tunnel at different construction stages,but the changes are relatively small,within the safety control value.This indicates that the construction of the Affiliated Middle School of Normal University has a relatively small impact on the safety of the Tianxiang Avenue Tunnel.

关 键 词：建筑物群 数值模拟 大直径盾构隧道 结构安全 

分 类 号：U45[建筑科学—桥梁与隧道工程]