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Numerical Study on Dynamic Effects of Soil-Tunnel-Structure Interaction
International Journal of Civil Engineering ( IF 1.7 ) Pub Date : 2021-06-20 , DOI: 10.1007/s40999-021-00642-8
Hamid Alielahi , Damoon Feizi

This study deals with the soil-structure interaction induced by underground tunnels and surface structures subjected to SV waves using the finite element method (FEM). To this end, the surface structures’ lateral displacement and drift due to the effects of several dimensionless parameters, including the tunnel depth, the surface distance between the structure and the tunnel, and the number of surface structure’s stories were investigated. The Mohr–Coulomb yield criterion was taken into account as the soil constitutive model. According to the results, the underground tunnel increases the seismic response at short frequencies. Moreover, the tunnel depth reduction led to a more severe ground seismic response and seismic amplification. It is found that the effect of the soil-tunnel-structure interaction on the surface structure's displacements and drifts is dependent on the soil specifications, underground tunnel, number of stories, and input motion. Also, the distance of the structure from the tunnel axis had a more significant impact on the seismic response of structures than the tunnel depth, and its variations further influenced the seismic response.



中文翻译:

土-隧道-结构相互作用动力效应的数值研究

本研究使用有限元方法 (FEM) 处理由地下隧道和地表结构受到 SV 波影响引起的土壤-结构相互作用。为此,研究了由于隧道深度、结构与隧道之间的表面距离以及表面结构层数等几个无量纲参数的影响,地表结构的横向位移和漂移。Mohr-Coulomb 屈服准则被考虑作为土壤本构模型。根据结果​​,地下隧道增加了短频率的地震响应。此外,隧道深度的减少导致更严重的地面地震反应和地震放大。发现土-隧道-结构相互作用对地表结构的影响' s 位移和漂移取决于土壤规格、地下隧道、层数和输入运动。此外,结构与隧道轴线的距离对结构地震响应的影响比隧道深度更显着,其变化进一步影响地震响应。

更新日期:2021-06-20
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