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| 引用本文： | 张向东,孙国志,穆琳.????????????????????????????[J].力学与实践,2008,30(2):78-82. |
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| 作者姓名： | 张向东 孙国志 穆琳 |
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| 作者单位： | 辽宁工程技术大学 土木建筑工程学院 辽宁阜新 123000 辽宁工程技术大学 土木建筑工程学院 辽宁阜新 123000 |
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| 摘 要： | 利用ADINA软件针对某工程实例隧道建立了有限元模型，然后对其开挖过程
中地表沉降进行了预测并分析了隧道及冻结壁的应力与位移场，其结果与工程实测值相符；
在此模型基础上，对隧道水平局部冻结法施工引起地表变形的相关因素进行了模拟分析，结
果表明:冻结法施工时，增加冻结壁厚度对地表沉降影响并不大，而采用扩大冻结壁的范围或
减小隧道半径及埋深的方法可有效地控制地表沉降，这对今后的冻结法施工设计有借鉴意义.
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| 关 键 词： | 地铁隧道 水平冻结法 冻结壁 地表沉降 数值分析 |
| 收稿时间： | 2007-1-4 |
| 修稿时间： | 2007年1月4日 |
NUMERICAL SIMULATION OF SURFACE SUBSIDENCE CAUSED BY FREEZING METHOD CONSTRUCTION IN TUNNEL |
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| ZHANG Xiangdong,SUN Guozhi,MU Lin.NUMERICAL SIMULATION OF SURFACE SUBSIDENCE CAUSED BY FREEZING METHOD CONSTRUCTION IN TUNNEL[J].Mechanics and Engineering,2008,30(2):78-82. |
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| Authors: | ZHANG Xiangdong SUN Guozhi MU Lin |
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| Abstract: | According to the local horizontal freeing construction of
a metro tunnel, the surface subsidence in the procedure of tunnel excavation
is forecasted and the fields of stress and strain in tunnel frozen soil wall
is analyzed, the results and the survey of project are equally. Based on
this model, The correlative factors of surface distortion induced by local
horizontal freezing method construction are analyzed. Finally, the results
can indicate: increasing the thickness of frozen soil wall has a little
influence on surface subsidence, but through the method of expanding the
area of frozen soil wall or decreasing tunnel's radius and depth can control
surface subsidence effectively. The results can provides reference to
similar construction methods. |
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