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兰州理工大学土木工程学院,甘肃,兰州,730050
Published:2021
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周凤玺,梁玉旺,庞宾宾.双圆形衬砌隧洞对柱面SH波作用下附近场地动力响应的影响分析∗[J].防灾减灾工程学报,2021,(2):276-286
Zhou Fengxi. Influence Analysis of Double Circular Lined Tunnel on Near-Field Dynamic Response of Cylindrical SH Waves[J]. 2021, (2): 276-286.
在柱面 SH 波作用下,由于弹性半空间中存在水平和垂直平行双圆形衬砌隧道,附近场地的动力响应将会受到影响。因此,本文基于弹性波理论,采用波函数展开法分析了双隧洞周围的柱面 SH 波散射问题,给出了双圆形衬砌隧道附近场地的位移解析解,并验证了该解的收敛性。通过对衬砌隧洞的衬砌刚度、隧洞埋深、两隧洞的中心间距以及入射波频率等参数的分析,研究了双圆形衬砌隧洞附近场地土体的位移幅值沿水平方向和深度方向的变化规律。结果表明:衬砌刚度、隧洞埋深、中心间距以及入射频率对双圆形衬砌隧洞附近场地的动力响应有着显著的影响。
Under the action of cylindrical SH waves,the dynamic response of the nearby site will be affected by the horizontal and vertical parallel double circular lined tunnels in the elastic half space. Therefore,based on elastic wave theory,the problem of cylindrical SH wave diffraction around double circular lined cavity is analyzed using the wave function expansion method. The displacement analytical solution of the site near the double circular lined tunnel is presented,and the precision of the solution is verified. Through the analysis on the lining stiffness,the burial depth of the cavity,the center distance between the two cavities,the frequency of the incident wave,etc.,the variation of the displacement amplitude of the soil near the double circular lined tunnel in the horizontal and vertical directions is studied. It is shown that the lining stiffness,burial depth,center distance and incident frequency have significant effects on the dynamic response of the site near the double circular lined tunnel.
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