摘要
以武汉地铁3号线隧道盾构下穿京广铁路为背景,通过数值模拟分析了土体加固前后铁路的沉降变形规律,同时与实测值进行了对比分析。研究表明,通过数值模拟计算得出的地表沉降变形规律与实测情况基本一致,在一定区域内采取袖阀管注浆加固能够有效降低盾构施工对铁路变形的影响。
Taking the shield tunnel under passing Beijing-Guangzhou railway line by the Wuhan metro line 3 as an example, through numerical simulation and analysis of the soil before and after reinforcement as well as the railway line settlement deformation patterns, the paper compares and analyzes the measured values. The research shows that the surface settlement deformation patterns worked out through numerical simulation calculation are basically the same as the field test. In a certain region, sleeve valve pipe grouting strengthening work can effectively reduce the railway deformation effects caused by shield construction.
出处
《现代城市轨道交通》
2016年第1期30-34,共5页
Modern Urban Transit
关键词
盾构下穿既有铁路
注浆加固
铁路沉降
数值模拟
shield tunneling under passing existing railway line
grouting reinforcement
railway settlement
numerical simulation
