摘要
依托长春轨道交通5号线一期工程安新路站—蔚山路西站区间工程,采用ABAQUS计算分析浅埋暗挖隧道支护结构和围岩的受力变形规律,并与监测数据进行对比。结果表明:通过模拟计算,在第四台阶支护完毕后地表沉降达到最大值58.36 mm,拱顶沉降值一般是周边收敛值的一倍;现场监测数据和模拟分析结果进行对比后发现,隧道开挖过程中实测值的变化趋势与模拟值一致,证明了利用有限元数值模拟的可靠性与实用性。数值模拟可以很好地指导实际施工和监理工作。
Based on the running tunnel from Anxin Road Station to Weishan Road West Station in the first phase project of Changchun rail transit line 5,the finite element analysis code ABAQUS was adopted to investigate the stress and deformation of the tunnel structures and surrounding soils.The numerical simulation results were compared with the in-site monitoring data.The findings show that the maximum surface settlement is 58.36 mm after the completion of support at the fourth step.The vault settlement is usually twice of the clearance convergence displacement.The comparison between the in-site monitoring and the numerical simulation shows that the magnitude of measured displacements is consistent with the simulated results.The reliability and practicability of the finite element analysis by numerical simulation could be verified.Numerical simulation could well guide the actual construction and supervision work.
作者
刘石磊
LIU Shilei(The 4th Engineering Company,China Railway No.3 Engineering Group Co.LTD.,Beijing 102300)
出处
《现代隧道技术》
CSCD
北大核心
2022年第S02期54-62,共9页
Modern Tunnelling Technology
基金
吉林省科技发展计划项目(20220203058SF)
中铁三局集团科技研发项目(ZTSJCT5-2021-JY001)
关键词
浅埋暗挖隧道
数值模拟
有限元分析
沉降监测
Shallow-buried mined tunnel
Numerical simulation
Finite element analysis
Settlement monitoring
