摘要
隧道本身具有良好的抗震性能,但是近年来大量震害研究调查发现,穿越断层破碎带的隧道很容易遭受严重破坏,开展穿越断层破碎带隧道动力响应和减震措施研究具有重大现实意义。基于数值计算并结合雅泸高速公路勒不果喇吉隧道,研究了穿越断层破碎带隧道的抗减震措施。结果显示,减震层对穿越断层隧道的减震效果明显;合理减小隧道衬砌刚度,对穿越断层隧道减震是有利的。
In general speaking, the anti-seismic capacity of tunnel is very good. However, in recent years, it is found that the tunnels through fault is destructible by investigating large numbers of seismic instances. It is of great essential value to study the seismic responses and vibration-absorption measures of the tunnels through fault. In this paper, based on numerical computation, the detailed researches are carried out to the seismic response and vibration-absorption measures of the tunnels through fault by taking Lebuguolaji Tunnel as a prototype. According to the results, equipping damping layer for the tunnels through fault is effective to weak lining to be destroyed. And decreasing lining elastic modulus logically is beneficial to relieving damage.
出处
《公路》
北大核心
2010年第2期194-197,共4页
Highway
关键词
断层
隧道
粘弹性边界
减震
fault
tunnel
viscous-elastic boundary
vibration-absorption
