Civil structures are subjected to accidental or intentional impacts, which can lead to an initial failure, and subsequently to a tragic progressive collapse. While progressive collapse studies have seen significant growth, most of the current research focuses on threat-independent approaches, neglecting the explicit consideration of impact effects on the building’s behavior. In this study, we investigate impact-induced progressive collapse, exploring various scenarios with different mass and velocity parameters. By doing so, this study aims to highlight the importance of explicitly accounting for impacts in progressive collapse analyses and provide possible solutions for safer structural design. For comparison, code-based dynamic column removal analyses are also performed and the results are compared and contrasted. Based on the obtained results, location of the damage and height of the building have important influence on the progressive collapse response in both threat-independent and threat-dependent approaches. Velocity plays a significant and critical role compared to mass in increasing the kinetic energy applied to the building, and the vertical vibration in the node on top of the impacted column. With the lower impactor velocities, the threat-independent method can be used safely, however, for the higher velocities the progressive collapse potential is much higher in threat-dependent approach compared with code-based dynamic column removal.

土木结构会受到意外或故意的影响，这可能导致最初的失败，并随后导致悲剧性的逐渐倒塌。虽然渐进式倒塌研究有了显着的增长，但目前的大多数研究都集中在与威胁无关的方法上，忽略了对建筑物行为影响的明确考虑。在这项研究中，我们研究了撞击引起的渐进式塌陷，探索了具有不同质量和速度参数的各种场景。通过这样做，本研究旨在强调明确考虑渐进倒塌分析影响的重要性，并为更安全的结构设计提供可能的解决方案。为了进行比较，还执行了基于代码的动态列删除分析，并对结果进行了比较和对比。根据所获得的结果，在威胁无关和威胁相关方法中，损坏位置和建筑物高度对渐进式倒塌响应都有重要影响。与质量相比，速度在增加施加到建筑物的动能以及受影响柱顶部节点的垂直振动方面起着重要且关键的作用。在冲击器速度较低的情况下，可以安全地使用与威胁无关的方法，但是，对于较高的速度，与基于代码的动态柱移除相比，威胁相关方法中的渐进崩溃可能性要高得多。