Abstract The atrium-style station is one of the favourite choices in underground railway systems, as it can provide a larger and clearer space for passengers and commercial clients at the hall level of the station. With such style, as hall slabs are replaced with flat-beams, the station's capabilities to withstand lateral action like seismic action become one of the main concerns. Shaking table tests were conducted to investigate the dynamic response of soil-structure interaction of atrium-style station model under harmonic excitations covering the full frequency range, with comparison to free-field tests. The experimental results confirm that the influence of the structure on the dynamic response of the ground surface begins when the frequency of input motions is greater than 10 Hz. The predominant frequencies of the ground corresponding to the second and third modes both show an increase of 10% from the FF model to the SS model due to the presence of an atrium-style metro station. For atrium-style station: (i) the discontinuous structural elements such as beams and columns are more severely strained than the continuous ones like slabs and side walls, (ii) the peak dynamic soil normal stresses along the side wall follow an approximate L-shaped distribution and the maximum stress occurs at the side wall bottom, and (iii) the spectral characteristics of both dynamic structural strain and dynamic soil normal stress reflect the amplification function of the ground.

中文翻译：

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谐波激励下中庭式地铁站试验

摘要 中庭式车站是地铁系统中最受欢迎的选择之一，因为它可以在车站大厅层为乘客和商业客户提供更大、更清晰的空间。在这种风格下，随着大厅板被平梁取代，车站承受地震等横向作用的能力成为主要关注点之一。进行了振动台试验以研究在覆盖全频率范围的谐波激励下中庭式站模型的土壤-结构相互作用的动态响应，并与自由场试验进行比较。实验结果证实，当输入运动频率大于 10 Hz 时，结构对地表动力响应的影响就开始了。由于中庭式地铁站的存在，对应于第二和第三模式的地面的主要​​频率都显示从 FF 模型到 SS 模型增加了 10%。对于中庭式车站：(i) 梁和柱等不连续结构元素比板和侧壁等连续结构元素更严重，(ii) 沿侧壁的峰值动态土壤法向应力遵循近似 L-形状分布和最大应力出现在侧壁底部，并且（iii）动力结构应变和动力土壤法向应力的谱特征反映了地层的放大功能。