地面超载软土大直径地铁盾构隧道结构变形预测  

Structure Deformation Prediction of Large Diameter Metro Shield Tunnel in Overload Soft Soil Region

作　　者：徐秀峰 黄爱军 王春凯 袁勇[1] 

机构地区：[1]同济大学地下建筑与工程系,上海硕士200092 [2]上海城市建设设计研究总院,上海200125

出　　处：《城市轨道交通研究》2018年第1期57-61,共5页Urban Mass Transit

摘　　要：以上海轨道交通16号线某区间大直径盾构隧道为工程背景,建立了带有内部结构的三维有限元盾构隧道模型。计算结果表明,盾构隧道每组拼装循环中的两环管片受力变形性能基本一致;衬砌管片坏变形呈"横鸭蛋"状;中隔墙压应力与石岩棉变形量存在密切关系。该结果可为盾构隧道在实际运营中对地面超载量的控制标准提供参考。Based on a large diameter shield tunnel section of Shanghai metro Line 16, a three-dimensional tunnel brE model with internal structure is established. The calculation results show that, the stress deformation performance of segment rings in one assembly circle is nearly the same, the overall structure is deformed into a horizontal ellipse,changes in mid-partition wall stress are closely related to the compression of rock wool. The calculation results could provide a reference for the control standards of overload ground during the normal metro op- eration in large diameter shield tunnel.

关 键 词：大直径地铁盾构隧道 地面超载 有限元分析 结构变形 

分 类 号：TU433[建筑科学—岩土工程] U455.43[建筑科学—土工工程]