| 特大断面偏压公路隧道临时支护拆除方式研究 |
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| 引用本文： | 严宗雪.特大断面偏压公路隧道临时支护拆除方式研究[J].科学技术与工程,2010,10(29). |
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| 作者姓名： | 严宗雪 |
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| 作者单位： | 华南理工大学,土木与交通学院,广州,510641;亚热带建筑科学国家重点实验室,广州,510641;广州市高速公路有限公司,广州,510080 |
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| 摘 要： | 特大断面公路隧道大多采用双侧壁导坑方式施工，临时支护作在施工过程中起着至关重要的重要，对于不偏压隧道先拆除左获右侧临时支护影响不大，而对于偏压隧道，埋深浅侧的临时支护先拆除，还是埋深深侧的临时支护先拆除对初期支护受力有较大影响。本文通过对广州龙头山特大断面隧道公路偏压隧道的数值计算，分析了偏压隧道左、右侧导洞的临时支护拆除方式对初期支护、临时支护弯矩和变形的影响，提出了特大断面偏压隧道基于双侧壁导坑开挖方式的临时支护合理的拆除方式。
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| 关 键 词： | 特大断面 偏压 公路隧道 临时支护 拆除 |
| 收稿时间： | 6/8/2010 7:52:10 PM |
| 修稿时间： | 7/20/2010 5:47:54 PM |
The research on the way of removing temporary support on Large section biasing road tunnel |
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| yanzongxue.The research on the way of removing temporary support on Large section biasing road tunnel[J].Science Technology and Engineering,2010,10(29). |
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| Authors: | yanzongxue |
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| Institution: | YAN Zong-xue(South China University of Technology,Guangzhou 510641,P.R.China,Guangzhou Highway Limited Company,Guangzhou,510080,P.R.China) |
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| Abstract: | Twin-side heading way is mainly used in large section load tunnel,temporary support play an important role during the construction.For the un-biasing tunnel,removing left firstly or right temporary support is not important,however,for biasing tunnel,removing left firstly or right temporary support has large effect on the internal force of preliminary bracing.By the numerical calculation on Longtoushan large section load tunnel,the paper analyzes temporary support's removing way effects on bending moment and... |
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| Keywords: | large section biasing load tunnel temporary support removing |
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