Analytical solution for dynamic responses of the vertical shaft in a shaft-tunnel junction under transverse loads
Analytical solution for dynamic responses of the vertical shaft in a shaft-tunnel junction under transverse loads
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横向荷载作用下竖井-隧道连接处立轴动力响应的解析解
DOI：
10.1016/j.soildyn.2019.105779
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发表时间：
2019-11
影响因子：
4
通讯作者：
Yu Haitao
中科院分区：
文献类型：
--
作者：
Zhang Jinghua;Yuan Yong;Bilotta Emilio;Zhang Bu;Yu Haitao
本文提出了井隧结合部竖井在横向荷载作用下动力响应的解析解。假设轴在某些情况下可视为刚体。基于这一前提，最初为刚性沉箱开发的方程与竖井-隧道和土壤-隧道相互作用的条款相结合。两个具体的动态场景被认为是。第一种是当竖井受到地面以上的横向动载荷时。第二种情况是井隧结合部在横向地震作用下。所提出的解决方案的有效性，在这两种情况下，通过有限元方法进行检查。最后，将该方法应用于隧道影响评价。在第一种情况下，隧道对竖井的动态响应有重大影响。轴的位移可能会减少，因为隧道增加了刚度矩阵。然而，在第二种情况下，隧道的影响很小，可以忽略不计。竖井的地震反应与有无隧道大致相同。
This paper proposes an analytical solution for dynamic responses of the vertical shaft in a shaft-tunnel junction under transverse loads. The assumption is that the shaft could be regarded as a rigid body under certain circumstances. Based on that premise, equations originally developed for rigid caissons are incorporated with terms of shaft-tunnel and soil-tunnel interactions. Two specific dynamic scenarios are considered. The first one is when the shaft is subject to transverse dynamic loads above the ground surface. The second one is when the shaft-tunnel junction is under transverse seismic excitations. Validity of the proposed solution is examined in both scenarios by finite element method. Then, the proposed solution is used to evaluate influence of the tunnel. In the first scenario, the tunnel has a major influence on dynamic responses of the shaft. Displacements of the shaft are likely to be reduced because the tunnel adds to the stiffness matrix. Yet, in the second scenario, influence of the tunnel is minor enough to be neglected. Seismic responses of the shaft are approximately the same with or without the tunnel.
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任意动载荷下截面单间断的有限欧拉-伯努利梁的解析解
影响因子：
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DOI：
--
发表时间：
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DOI：
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发表时间：
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期刊：
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影响因子：
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