关于防排烟风管耐火极限要求及做法的讨论  

DISCUSSION ON FIRE RESISTANCE LIMIT REQUIREMENTS AND PRACTICES OF SMOKE CONTROL AND EXHAUST DUCT

作　　者：陈苏琪 CHEN Su-qi(Tongji Architectural Decign(Gioup)Co.,Ltd,200092,Shanghai,China)

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《建筑技术》2023年第4期492-495,共4页Architecture Technology

摘　　要：国家标准GB 51251—2017《建筑防烟排烟系统技术标准》对防排烟风管耐火极限提出要求,但未提出相关标准具体做法。通过对风管耐火极限标准、耐火极限判定依据、现行风管耐火极限具体做法及争议做法等方面的论述和分析,以期为设计提供参考。The national standard GB 51251—2017 Technical Standard for Smoke Control and Smoke Extraction Systems in Buildings puts forward requirements for the fire endurance of smoke control and exhaust duct,but does not propose specific practices of relevant standards.This paper discusses and analyzes the fire resistance limit standard of air duct,the basis for determining the fire resistance limit,the specific practices and controversial practices of the current fire resistance limit of air duct,in order to provide reference for the design.

关 键 词：耐火极限 判定依据 防火板 玻璃棉 防火漆 

分 类 号：TU69[建筑科学—建筑技术科学]