DAMAGE TO MOUNTAIN TUNNELS BY EARTHQUAKE AND ITS MECHANISM
DAMAGE TO MOUNTAIN TUNNELS BY EARTHQUAKE AND ITS MECHANISM
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DOI：
10.2208/jscej.2000.659_27
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发表时间：
2000-09
期刊：
影响因子：
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通讯作者：
T. Asakura;Yukio Shiba;S. Matsuoka;Toshio Oya;K. Yashiro
中科院分区：
文献类型：
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作者：
T. Asakura;Yukio Shiba;S. Matsuoka;Toshio Oya;K. Yashiro
一般认为，山岭隧道在地震中的破坏较小。然而，最近对地震造成的山岭隧道破坏的案例研究也表明，当1）地震规模较大，2）隧道附近有地震断层或3）有特殊条件时，它们很可能会受到破坏。为了研究山岭隧道的破坏机理，收集了地震作用下的隧道资料。我们分析了收集到的数据，分类损伤模式，并进行了模拟分析和模型试验。根据研究结果，我们可以将山岭隧道在地震作用下的破坏模式分为以下三种模式：1）隧道洞口和洞口的破坏模式; 2）隧道在破碎带的破坏模式; 3）断层滑动对隧道的破坏模式。我们能够证明这些机制的模拟分析和模型试验的结果。
It is generally said that mountain tunnels are little damaged by earthquake. However, recent case studies of the damage to mountain tunnels caused by earthquakes also show that they are likely to be damaged when 1) the scale of the earthquake is large, 2) there are earthquake faults near the tunnel or 3) there are special conditions. We collected information on the tunnels which suffered damage from earthquake to study the damage mechanism of mountain tunnels. We analyzed collected data, classified damage patterns and preformed simulation analyses and model tests. Based on the study results, we concluded that we were able to classify damage patterns of mountain tunnels by earthquake into following three patterns; 1) damage to tunnel entrance and portal, 2) damage to tunnels at a fractured zone, 3) damage to tunnels by sliding of fault. We were able to prove these mechanisms by the results of simulation analyses and model tests.