Frame beam-anchor geotechnical structures are increasingly utilized to reinforce slopes in earthquake prone areas. Their dynamic responses have been thoroughly explored. However, the influence of seasonal variation in seasonally frozen regions has been largely ignored. This paper investigates the seismic response of slopes reinforced with anchored frame beams, considering the combined effects of seasonal change and earthquakes. This is achieved through a series of shaking table tests and numerical simulations. The findings reveal that the seismic responses, including acceleration response and displacement response, are more pronounced in the warm season than in the cold season. Conversely, the total axial force of the anchors and the bending moment of the frame columns are greater in the cold season. During the warm season, the frame-anchor slope support system exhibits “high-frequency filtering and low-frequency amplification”, while the spectral characteristics in the cold season are reversed. Thus, in the seismic design of such systems in seasonally frozen regions, it is crucial to consider slope deformation in the warm season to prevent damage from excessive acceleration or displacement. Additionally, the internal forces of the anchor frame structure must be checked in the cold season to avoid mechanical failures due to the combined impact of earthquakes and freezing effects. These insights offer valuable recommendations for improving the seismic design of frame beam-anchor structures in seasonally frozen regions and pave the way for further research on the seismic responses of various retaining slope structures in these areas.

中文翻译：

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季冻区锚固框架梁加筋边坡地震响应：振动台试验与数值分析

框架梁锚岩土结构越来越多地用于加固地震多发地区的边坡。他们的动态反应已被彻底探索。然而，季节性冰冻地区季节变化的影响在很大程度上被忽略了。本文研究了锚固框架梁加固边坡的地震响应，考虑了季节变化和地震的综合影响。这是通过一系列振动台测试和数值模拟实现的。研究结果表明，地震响应，包括加速度响应和位移响应，在暖季比冷季更为明显。反之，寒冷季节锚杆总轴力和框架柱弯矩较大。暖季时，框锚边坡支护系统表现出“高频滤波、低频放大”的特征，而冷季时频谱特性则相反。因此，在季节性冰冻地区此类系统的抗震设计中，考虑暖季边坡变形以防止过度加速度或位移造成的破坏至关重要。另外，在寒冷季节还必须校核锚架结构的内力，避免地震和冰冻效应的共同影响而导致机械失效。这些见解为改进季节性冰冻地区框架梁锚结构的抗震设计提供了有价值的建议，并为进一步研究这些地区各种挡土边坡结构的地震响应铺平了道路。