| 高烈度地震区隧道减震模型的建立及其减震效果模型试验研究 |
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| 引用本文： | 王明年,崔光耀.高烈度地震区隧道减震模型的建立及其减震效果模型试验研究[J].岩土力学,2010,31(6):1884-1890. |
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| 作者姓名： | 王明年 崔光耀 |
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| 作者单位： | 西南交通大学,土木工程学院,成都,610031 |
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| 摘 要： | 现场调查表明：5.12汶川大地震共造成21条高速公路和16条国道、省道干线上总延长达20 417 m的24座隧道结构受损，严重影响了灾区救援和灾后重建。可见，传统的隧道抗震技术已不能保证高烈度地震区隧道结构的安全。为此，在分析隧道震害特点及原因的基础上，建立了隧道支护体系内设置减震层的减震模型，根据这一减震模型，研究了减震层刚度、地震波输入频率和减震层阻尼等参数对隧道减震效果的影响。通过三维数值模拟和室内模型试验，验证了该减震模型的减震效果。研究成果可为高烈度地震区隧道结构减震设计提供参考。
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| 关 键 词： | 高烈度地震区 隧道减震模型 减震模型试验 |
| 收稿时间： | 2009-07-21 |
Establishment of tunnel damping model and research on damping effect with model test in highly seismic area |
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| WANG Ming-nian,CUI Guang-yao.Establishment of tunnel damping model and research on damping effect with model test in highly seismic area[J].Rock and Soil Mechanics,2010,31(6):1884-1890. |
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| Authors: | WANG Ming-nian CUI Guang-yao |
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| Institution: | School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | Field investigation showed that: 21 expressways and 16 national and provincial roads were damaged during 5.12 Wenchuan earthquake. 24 tunnels (20 417 running meters) were damaged in this earthquake. It had seriously affected the disaster relief and post-disaster reconstruction. The traditional aseismic technology can not guarantee the safety of the tunnel structure. Therefore, by analyzing the earthquake disaster character and reason of tunnel, a damping model of setting shock absorption layer in the supporting system of tunnel is established. According to this damping model, shock absorption layer stiffness, the input of frequency of seismic and shock absorption layer damping on damping effect of tunnel are researched. Through three-dimensional numerical simulation and indoor model test, damping effect of this damping model is proved. Research results provide references for aseismic design of tunnel structure in a highly seismic area. |
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| Keywords: | highly seismic area damping model of tunnel damping model test |
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