It is conventional to assume that the role of the soil-structure interaction (SSI) is beneficial to the buildings under seismic loading. However, lessons learned from recent earthquakes revealed that this assumption could be misleading, and SSI may have different effects on the seismic response of different structural systems. In this study, an enhanced soil-structure numerical model is developed and verified using ABAQUS software to assess the impact of SSI on high-rise frame-core tube structures. The seismic responses of 20, 30, and 40-storey buildings constructed on soil class E_e (according to Australian Standards) under four earthquake acceleration records have been studied. The results in terms of maximum lateral deflections, foundation rocking, inter-storey drifts and storey shear forces for the rigid base and flexible base frame-core tube structures have been discussed and compared. Generally, SSI has a remarkable impact on the seismic behaviour of high-rise frame-core tube structures since it can increase the lateral deflections and inter-storey drifts and decrease storey shear forces of structures. However, It is worth noting that the seismic responses of soil-structure systems under near and far field earthquakes are considerably different.

通常假设土-结构相互作用 (SSI) 的作用有利于地震荷载作用下的建筑物。然而，从最近的地震中吸取的教训表明，这种假设可能具有误导性，SSI 可能对不同结构系统的地震响应产生不同的影响。在本研究中，使用 ABAQUS 软件开发和验证了增强的土壤结构数值模型，以评估 SSI 对高层框架-核心筒结构的影响。在 E _e级土壤上建造的 20、30 和 40 层建筑物的地震响应（根据澳大利亚标准）在四个地震加速度记录下进行了研究。讨论和比较了刚性基础和柔性基础框架-核心筒结构的最大侧向挠度、基础摇摆、层间漂移和层间剪切力的结果。一般来说，SSI对高层框架-核心筒结构的抗震性能有显着影响，因为它可以增加结构的侧向挠度和层间漂移，降低层间剪力。但值得注意的是，近场地震和远场地震下土-结构系统的地震响应存在较大差异。