临近隧道的地面建筑物拆除与重建对隧道安全影响研究  

Study on the infl uence of the demolition and reconstruction of the ground buildings near the tunnel on the tunnel safety

作　　者：薛伟 XUE Wei(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》2023年第4期42-46,共5页Railway Survey and Design

摘　　要：临近隧道的地面建筑物拆除与重建,会引起隧道结构变形和内力变化,严重时会造成隧道衬砌结构开裂,对隧道的正常使用带来一定的影响。本文通过数值计算的方式,模拟了启盈物流中心在原仓库拆除阶段、桩基施工阶段、上部结构施工阶段、运营阶段四种工况下,对狮子洋隧道结构及内力的影响。研究结果表明启盈物流中心在不同施工阶段,均引起了狮子洋隧道衬砌结构变形和内力变化,但变化值均在安全控制值以内,对隧道安全性影响较小。考虑隧道正上方设停车场,为确保隧道结构安全,经过计算,隧道正上方停放车辆不得大于135t。The demolition and reconstruction of the ground buildings near the tunnel will cause the deformation and internal force changes of the tunnel structure,and in serious cases,the tunnel lining structure will crack,which will have a certain impact on the normal use of the tunnel.This paper simulates the influence of Qiying Logistics Center on the structure and internal force of Shiziyang Tunnel under the four working conditions of the original warehouse demolition stage,pile foundation construction stage,superstructure construction stage and operation stage by numerical calculation.The research results show that Qiying Logistics Center has caused the deformation and internal force changes of Shiziyang tunnel lining structure in different construction stages,but the change values are within the safety control value,which has little impact on the tunnel safety.It is considered to set a parking lot directly above the tunnel.In order to ensure the safety of the tunnel structure,the parking vehicles directly above the tunnel shall not be more than 135t.

关 键 词：临近隧道 拆除 重建 变形 内力 

分 类 号：U45[建筑科学—桥梁与隧道工程]