| 高烈度地震区连拱隧道洞口段抗震措施研究 |
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| 引用本文： | 王峥峥,王正松,高波.高烈度地震区连拱隧道洞口段抗震措施研究[J].中国公路学报,2011(6). |
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| 作者姓名： | 王峥峥 王正松 高波 |
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| 作者单位： | 大连理工大学土木工程学院;铁道第三勘察设计院集团有限公司;西南交通大学土木工程学院; |
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| 基金项目： | 国家自然科学基金项目(50878187); 中国博士后科学基金项目(20100471449); 中央高校基本科研业务费专项资金项目(DUT102C(3)22) |
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| 摘 要： | 以中国西南高烈度地震区某拟建连拱隧道为背景,提出隧道洞口段2种全环注浆抗震加固方案,即全环间隔注浆和全环接触注浆;并采用三维数值模拟对不同注浆形式和注浆厚度进行了研究。结果表明:连拱隧道全环注浆2种加固形式均能有效减小隧道-围岩系统的动力相互作用,从而提高隧道整体抗震性能;其中全环接触注浆效果最优,全环间隔注浆效果次之,局部注浆效果不明显;全环接触注浆厚度增大到0.5倍开挖宽度以后,注浆效果几乎不变。研究结论对公路隧道抗震设计、施工有一定参考价值。
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| 关 键 词： | 隧道工程 连拱隧道 三维数值模拟 抗震措施 隧道洞口段 注浆加固 |
Research on Seismic Measures of Double-arch Tunnel Portals in High-intensity Earthquake Zone |
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| WANG Zheng-zheng,WANG Zheng-song,GAO Bo.Research on Seismic Measures of Double-arch Tunnel Portals in High-intensity Earthquake Zone[J].China Journal of Highway and Transport,2011(6). |
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| Authors: | WANG Zheng-zheng WANG Zheng-song GAO Bo |
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| Institution: | WANG Zheng-zheng1,WANG Zheng-song2,GAO Bo3(1.School of Civil Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China,2.The Third Railway Survey and Design Institute Group Corporation,Tianjin 300142,3.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan,China) |
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| Abstract: | Based on the background of a double-arch tunnel which was constructed on high-intensity earthquake zone in southwestern China,two types of grout consolidation projects for tunnel portals,i.e.,the whole chain alternative grouting and the whole chain touch grouting were proposed.Different types and thicknesses of grout were studied by three dimensional numerical simulation.Results show that two types of grout consolidation projects of double-arch tunnel can reduce the dynamic interaction of tunnel and surroun... |
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| Keywords: | tunnel engineering double-arch tunnel three dimensional numerical simulation seismic measure tunnel portal grout consolidation |
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