住宅地下自行车库排烟系统设计与分析

Design and Analysis of Smoke Exhaust System for Residential Underground Bicycle Garage

GB51251—2017《建筑防烟排烟系统技术标准》的发布与实施对建筑排烟系统的设计建立了新的标准体系和设计要求。文章针对层高有限的住宅地下自行车库的排烟系统,分析得出传统设计存在的问题,进而提出3种排烟支管的改进设计方案,并从风管风口的形式、风阻、工程造价等多方面进行对比与分析,为实际工程设计提供参考与建议。

The release and implementation of GB51251—2017"Technical Standard for Smoke Management Systems in Buildings"establishes new standard system and design requirements for the design of smoke extraction system in building.Aiming at the smoke exhaust system of residential underground bicycle garage with limited floor height,this paper analyzes the problems existing in the traditional design,and proposes three improved design schemes of branch smoke exhaust duct.Through comparing and analyzing the forms of smoke exhaust duct,smoke outlet,duct resistance,engineering cost and other aspects,this paper provides references and suggestions for actual engineering design.