| 地面超载软土大直径地铁盾构隧道结构变形预测 |
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| 引用本文： | 徐秀峰,黄爱军,王春凯,袁勇.地面超载软土大直径地铁盾构隧道结构变形预测[J].城市轨道交通研究,2018(1):57-61. |
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| 作者姓名： | 徐秀峰 黄爱军 王春凯 袁勇 |
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| 作者单位： | 同济大学地下建筑与工程系,200092,上海
上海城市建设设计研究总院,200125,上海 |
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| 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。
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| 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 large diameter metro shield tunnel overload fi-nite element analysis structure deformation |
Structure Deformation Prediction of Large Diameter Metro Shield Tunnel in Overload Soft Soil Region |
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| XU Xiufeng,HUANG Aijun,WANG Chunkai,YUAN Yong.Structure Deformation Prediction of Large Diameter Metro Shield Tunnel in Overload Soft Soil Region[J].Urban Mass Transit,2018(1):57-61. |
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| Authors: | XU Xiufeng HUANG Aijun WANG Chunkai YUAN Yong |
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| Abstract: | Based on a large diameter shield tunnel section of Shanghai metro Line 16,a three-dimensional tunnel FE 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 con-trol standards of overload ground during the normal metro op-eration in large diameter shield tunnel. |
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