摘要
以合肥徽州大道地下轨道交通1号线(珠江路站—锦绣大道站)施工为研究对象,为减小道路施工对其产生的影响,以有效保护1号线区间隧道,通过Midas NX建立数值模型,研究了道路施工对明挖隧道及公路的变形特性,分析了道路施工中开挖卸载和回填加载2种工况对隧道结构和周围环境的变形影响,并经过现场监测,综合判定数值模拟的可行性。研究发现,道路施工对既有结构的变形主要表现在竖向位移上,对水平位移影响较小,在实际施工中要重点关注,做好控制措施,确保相似工程的安全进行。
In order to analyze the impact of road construction on existing tunnels and highways,the construction of Hefei Huizhou Avenue Underground Rail Transit Line 1(Zhujiang Road Station-Jinxiu Avenue Station)was taken as the research object.A numerical model was established through Midas NX to study the deformation characteristics of open-cut tunnels and highways caused by road construction,and analyze the impact of two working conditions of excavation,unloading and backfill loading on the deformation of the tunnel structure and the surrounding environment during road construction,and through on-site monitoring the feasibility of numerical simulation was determined comprehensively.The study found that the deformation of the existing structure caused by road construction was mainly manifested in the vertical displacement,which had little influence on the horizontal displacement.In order to reduce the impact of road construction on existing tunnels and highways,and to effectively protect the tunnels of Line 1,control measures must be taken during actual construction to ensure the safety of the similar projects.
作者
吕秋玲
刘成
LYU Qiuling;LIU Cheng(School of Civil Engineering,Anhui Jianzhu University,Hefei Anhui 230601)
出处
《湖北理工学院学报》
2021年第5期28-32,共5页
Journal of Hubei Polytechnic University
基金
安徽省高校省级科学研究项目(项目编号:KJ2019JD02)
安徽省“六卓越一拔尖”卓越人才培养创新项目(项目编号:2019zyrc080)。
关键词
道路施工
明挖隧道
数值模拟
监测分析
road construction
open-cut tunnel
numerical simulation
monitoring analysis
