摘要
文章针对郑州地铁盾构法隧道近距离叠交穿越电力隧道的施工工况,应用ABAQUS软件对地铁隧道穿越电力隧道施工进行数值模拟,研究分析了郑州砂性地层盾构施工引起的地表以及电力隧道的沉降规律。计算结果表明,地表沉降最大值位于两隧道中心,约12 mm;电力隧道最大沉降值位于盾构隧道与电力隧道交点处,最大值约15 mm,在规范要求沉降范围内。基于研究成果,采取针对性施工措施后,地表沉降与电力隧道的沉降得到了有效控制,确保了电力隧道的安全。
Base d on a shield tunnel of the Zhengzhou metro that passes under an electric power tunnel,a numerical simulation analysis was carried out by ABAQUS software and the settlement laws of the ground surface and the electric power tunnel were researched,as well as shield tunnel construction in sandy strata.The results show that： the maximum ground surface settlement that occurred at the middle of the two tunnels is about 12 mm,while the maximum ground settlement of the electric power tunnel,occurring at the intersection of the two tunnels,is about 15 mm,all of which are within an allowable range.Thus,it is concluded that the settlements are both controlled by targeted construction measures,which ensure the security of electric power tunnel.
出处
《现代隧道技术》
EI
北大核心
2014年第5期161-165,173,共6页
Modern Tunnelling Technology
关键词
地铁隧道
盾构法
下穿施工
既有隧道
数值模拟
沉降控制
Metro tunnel
Shield method
Passing under an existing tunnel
Numerical simulation
Settlement control
