对防排烟系统设计的思考——基于GB51251—2017《建筑防烟排烟系统技术标准》

Thoughts on the Design of Smoke Control System——Based on GB 51251—2017 Technical Standard for Smoke Control Systems in Buildings

基于GB51251—2017《建筑防烟排烟系统技术标准》,对建筑封闭楼梯间防烟系统设计中的自然通风和固定窗设施、建筑内走道和中庭自然排烟进行了分析,指出在设计过程中应注意疏散门与防火门的区别,阐述了不同设计师对特殊形式的建筑内走道在理解和设计方面的不同,以及部分地区对中庭排烟在执行上存在的差异化,指出了该标准中的仍需完善之处。

Based on GB 51251—2017 Technical Standard for Smoke Management Systems in Buildings,this paper analyzes the natural ventilation and fixed window facilities in the design of smoke control system of closed staircase,and the natural smoke exhaust in the walkway and atrium of the building.It points out that attention should be paid to the difference between evacuation door and fire door in the design process,expounds the differences in understanding and design of special forms of architectural walkways by different designers,as well as the differences in the implementation of atrium smoke exhaust in some areas.It points out that the standard still needs to be improved.