| 既有高速公路下穿隧道超长双层大管棚变形规律研究 |
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| 引用本文： | 李留玺,余永强,唐冬雪.既有高速公路下穿隧道超长双层大管棚变形规律研究[J].洛阳理工学院学报（自然科学版）,2011(3):33-37. |
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| 作者姓名： | 李留玺 余永强 唐冬雪 |
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| 作者单位： | 河南理工大学土木工程学院;中铁十五局集团有限公司 |
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| 摘 要： | 某隧道下穿高速公路段以140m超长大管棚作为超前预支护.为探究隧道开挖过程中管棚与围岩的相互作用,采用测斜仪和水平测斜管对超长大管棚的变形进行测试,得到管棚在隧道开挖过程中各点的位移的分布规律,应用双参数弹性地基梁中的巴氏(Pasternak)模型进行理论分析,并与试验结果进行对比.根据现场测试结果和理论计算,分析隧道...
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| 关 键 词： | 管棚 Pasternak模型 测试 变形规律 |
Deformation Law of Super Long Double-layer Pipe-roof in Tunnel Under the Existing Highway |
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| LI Liu-xi,YU Yong-qiang,TANG Dong-xue.Deformation Law of Super Long Double-layer Pipe-roof in Tunnel Under the Existing Highway[J].Journal of Luoyang Institute of Science and Technology,2011(3):33-37. |
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| Authors: | LI Liu-xi YU Yong-qiang TANG Dong-xue |
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| Affiliation: | 1.Henan Polytechnic University,Jiaozuo 454000,China; 2.The Fifteenth Bureau of Chinese Railway,Luoyang 471013,China) |
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| Abstract: | A tunnel across a certain highway takes the ultra long and large pipe shed of 140 meters as the forepoling.In order to explore the interaction between pipe-roof and surrounding rock during the tunnel excavation,the test of deformation of the ultra long and large pipe shed has been carried out with inclinometer and horizontal inclinometer tube,and the distribution law of displacements of pipe-roof parts during the tunnel excavation has been obtained.The(Pasternak) model of double-parameter elastic foundation beam is applied to the theoretical analyses,and the results are compared with the test results.The action mechanism of the pipe-roof and surrounding rock during the tunnel excavation is also analyzed based on the result of the on-site test and theoretical calculation.The research results can provide reference for similar projects in the future. |
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| Keywords: | pipe-roof Pasternak model text deformation law |
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