3D simulations of smoke exhaust system in two types of subway station platforms

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Ventilation Pub Date : 2020-01-26 DOI:10.1080/14733315.2019.1710059

Zahra Tavakolian, O. Abouali, M. Yaghoubi

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引用次数: 5

Abstract

Abstract In this study, smoke evacuation in two kinds of subway station platform models, namely: an island platform station and a two side platforms station is simulated in a three-dimensional configuration. FDS 6.1.1 (Fire Dynamic Simulator) software has been employed to perform numerical simulations. The results showed noticeable effects of platform architecture on the process of smoke evacuation and emission spreading. The location of the connecting stairs (station accesses) between floors in both types of subway stations, installing the walls around these stairs in island platform type, the presence or absence of fireproof and antismoke curtains in suitable areas in two side platforms type have significant impacts on the smoke spreading. At the end, after the comparison between smoke dispersion in these two types of subway's platform, different architecture corrections were suggested and evaluated. Overall, it is concluded that an island platform station is more challenging in smoke control point of view, because the openings at the ceiling of the platform (stairway path) provide a convenient space for smoke to escape to the upper floors. In summary station architecture and even the smallest architectural changes at a subway station can change the smoke dispersion in space.

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两种地铁站台排烟系统的三维仿真

摘要本研究对两种地铁站台模型，即岛式月台站和双侧月台站的排烟过程进行了三维模拟。采用FDS 6.1.1 (Fire Dynamic Simulator)软件进行数值模拟。结果表明，平台结构对烟气疏散和扩散过程有显著影响。两种类型的地铁站楼层间连接楼梯(站道口)的位置、岛式月台型楼梯周围的墙体安装、两侧月台型适当区域是否设置防火防烟幕对烟雾蔓延有重要影响。最后，通过对比两种地铁平台的烟雾扩散情况，提出了不同的建筑修正建议并进行了评价。总的来说，结论是岛式月台站在烟雾控制方面更具挑战性，因为月台天花板(楼梯路径)的开口为烟雾逃逸到较高楼层提供了方便的空间。总而言之，地铁站的建筑结构甚至是最小的建筑变化都可以改变烟雾在空间上的扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).