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隧道-土-隧道轴向动力相互作用的一个解析解

DOI: 10.13197/j.eeev.2015.02.48.liangjw.006, PP. 48-62

Keywords: 地下隧道,土-隧道动力相互作用,动力响应,隧道间距,波函数展开法

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Abstract:

本文采用波函数展开法给出弹性半空间中隧道-土-隧道轴向动力相互作用的一个解析解,并通过对地表位移残差的收敛性分析对解析解的精度进行了验证.研究了隧道埋深、隧道质量、隧道间距、波入射频率和入射角度等参数对隧道轴向动力响应的影响.研究表明,隧道埋深越小,隧道动力响应越大;隧道质量越大,隧道动力响应越大;隧道间距越小,隧道动力响应越大,但隧道间距的影响并不是单调变化,与波入射频率密切相关,两个隧道情况动力响应幅值可达单隧道情况的2.7倍.当隧道间距较小时,地下隧道的抗震设计需要考虑隧道之间的影响.

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