We numerically investigate the train-induced transient pressure on the platform screen doors (PSDs) of an island-type platform in a subway station according to real scenarios and full-scale simulation to enhance understanding of the design and safe operation of subway trains. Two typical cases, namely, the non-stop and chasing cases, were examined, with the train’s speed variation well simulated throughout both cases. In the non-stop case, a train passes through the station without stopping; in the chasing case, a train stops at the station while another subsequent train approaches through the tunnel, which inevitably happens during rush hours. It is observed that the train generates a compression wave when it passes the tunnel’s ventilation shaft, similar to what occurs when entering a tunnel. In the non-stop case, the PSDs experience two positive and one negative pressure extremes in the whole process. The first positive peak results from an oncoming compression wave through the tunnel, while the second positive and negative peaks arise due to the passing of the train head and tail, respectively. In the chasing case, the stopped train at the platform leads to a blockage effect that significantly increases the pressure on the PSDs via the oncoming compression wave. This lateral pressure may result in the failure of proper operation of the PSDs, particularly during rush hours, with pressure lasting for roughly 5.7 seconds. It is also found that, compared to the fully sealed PSD, both the half-height and partial porous PSDs can significantly reduce the pressure load caused by the passing of the train head, with its maximum pressure load reduced by 38.7% and 38.2%, respectively. Therefore, if the pressure load on a fully sealed PSD is too high for structural design, one may consider the use of half-height and partial porous PSDs as an alternative. Our study offers crucial insights into the train-induced transient pressure on PSDs in a subway station island-type platform. It provides guidance on optimizing the pressure/operation problem on PSDs and offers valuable information for the safe design and operation of subway trains.

我们根据真实场景和全尺寸仿真，对地铁车站岛式站台屏蔽门 (PSD) 上的列车引起的瞬态压力进行了数值研究，以加强对地铁列车设计和安全运行的理解。检查了两个典型案例，即直达和追逐案例，在这两种情况下都很好地模拟了列车的速度变化。在不停车的情况下，火车不停地经过车站；在追逐案例中，一列火车停在车站，而另一列后续火车通过隧道接近，这不可避免地发生在高峰时段。据观察，列车在经过隧道通风井时会产生压缩波，类似于进入隧道时发生的情况。在不停的情况下，PSDs在整个过程中经历了两个正压和一个负压极值。第一个正峰值是由通过隧道的迎面而来的压缩波产生的，而第二个正峰值和负峰值分别是由于列车头尾经过而产生的。在追逐的情况下，停在站台上的列车会导致阻塞效应，通过迎面而来的压缩波显着增加 PSD 上的压力。这种横向压力可能会导致 PSD 无法正常运行，尤其是在高峰时段，压力会持续大约 5.7 秒。还发现，与全密封PSD相比，半高PSD和部分多孔PSD均能显着降低列车头通过时产生的压力载荷，其最大压力载荷降低了38。分别为 7% 和 38.2%。因此，如果完全密封的 PSD 上的压力负载对于结构设计而言过高，则可以考虑使用半高和部分多孔 PSD 作为替代方案。我们的研究为地铁站岛式平台中列车引起的 PSD 瞬态压力提供了重要的见解。它为优化 PSD 的压力/运行问题提供了指导，并为地铁列车的安全设计和运行提供了有价值的信息。