地铁隧道活塞风与站台屏蔽门流固耦合的数值研究
Numerical Investigation on Fluid-Structure Interaction between Tunnel Piston Wind and Platform Screen Doors in Metro Systems
摘要
地铁是城市大运量交通的核心基础设施，其安全稳定运行对乘客生命财产与交通秩序至关重要。站台屏蔽门在保证乘客安全和列车运行中发挥关键作用，若屏蔽门在关门过程中出现异常，易引发列车滞留并放大隧道活塞风作用，形成"屏蔽门故障→列车滞留→活塞风加剧→更多故障"的恶性循环。本研究采用耦合的欧拉-拉格朗日方法，利用欧拉域的体积百分数场刻画隧道内气体瞬态演化，同时以拉格朗日单元描述门体，直接获得流场与结构响应的时序分布。研究结果直观再现了门缝收缩期的射流、扩散、涡旋与压力集中，并识别出局部高应力和面外鼓出变形，为屏蔽门的密封、加固与驱动设计提供理论依据。
Abstract
The subway system serves as the core infrastructure of urban mass transit, and its safe and stable operation is vital to both passenger safety and the orderly functioning of urban transportation. Platform screen doors (PSDs) play a crucial role in ensuring passenger safety and maintaining train operations. Malfunctions during the door-closing process can lead to train delays and amplify the tunnel piston wind effect, forming a detrimental cycle of "PSD malfunction, train detention, intensified piston wind, further failures." In this study, a coupled Eulerian-Lagrangian (CEL) approach is employed to analyze the transient fluid-structure interaction between tunnel airflow and the PSDs. The evolution of the transient airflow inside the tunnel is captured using the Eulerian domain\'s volume fraction field, while the door structure is modeled with Lagrangian elements to directly obtain the time-dependent distributions of flow field and structural response. The results vividly reproduce the jetting, diffusion, vortex formation, and pressure concentration occurring during the door-gap contraction phase, and identify regions of localized stress concentration and out-of-plane deformation, providing theoretical guidance for the sealing, reinforcement, and drive design of platform screen doors.关键词
隧道活塞风/站台屏蔽门/流-固耦合/地铁Key words
Tunnel piston wind/Platform screen door/Fluid-structure interaction/Subway引用本文复制引用
董勤之,曹明扬,吴爱中.地铁隧道活塞风与站台屏蔽门流固耦合的数值研究[EB/OL].(2025-10-30)[2026-04-02].http://www.paper.edu.cn/releasepaper/content/202510-29.学科分类
综合运输
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