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            暖通空調雜志社>期刊目次>2021年>第9期

            地鐵防排煙系統設計理念及方法反思

            Query on several habitual concepts and schemes in smoke control system of underground railway transit engineering

            劉伊江
            中鐵二院工程集團有限責任公司

            摘要:

            國內防排煙設計由原指令性設計向性能化設計轉型,地鐵防排煙系統設計介于二者之間,尚未建立針對地鐵工程消防性能化設計的基礎理論體系及評價體系。性能化設計應根據設計火災場景,聚焦于確保人員疏散路徑上的逃生條件。從性能化設計角度探討了地鐵區間隧道防排煙原則、列車火災功率取值、排煙量計算等方面存在的問題。

            關鍵詞:地鐵,防煙,指令性設計,性能化設計,設計火災規模

            Abstract:

            While the domestic smoke control system design is under the transition from prescriptive to performance-based, the basic theoretical and evaluation system is yet to be set-up in underground railway engineering domain, of which the smoke control system design principle is still ambiguously between prescriptive and performance-based. Under the performance-based approach, smoke control system design shall focus on maintaining the tenable environment along the occupant evacuation path rather than others. From this prospective, discusses the issues of underground railway tunnel ventilation principle, HRR of train fire, and calculation of smoke exhaust mass rate, etc.

            Keywords:undergroundrailway,smokecontrol,prescriptivedesign,performance-baseddesign,designfiresize

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