双C型冷弯薄壁复合墙板系统抗火性能研究

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (3): 339-342.

双C型冷弯薄壁复合墙板系统抗火性能研究

梁建国，曾祥康，杨凡，赵方舟

（长沙理工大学土木工程学院，湖南长沙 410114）

出版日期:2022-03-15 发布日期:2022-03-15
作者简介:端木祥玲（1982-），女，中国建筑科学研究院建筑防火研究所安全评估室副主任，高级工程师，硕士，主要从事消防安全评估、特殊消防设计、火灾风险评估以及消防规划等方面的工作，北京市朝阳区北三环东路30号，100013。

Research on the efficiency of smoke exhausting with diverse air make-up ways in atrium subway station

DUANMU Xiang-ling， ZHAN Zi-na， LI Lei，SONG Yun-long

(China Academy of Building Research, Beijing 100013, China)

Online:2022-03-15 Published:2022-03-15

摘要/Abstract

摘要： 为研究双C型冷弯薄壁复合墙板系统的抗火性能，运用经试验验证的复合墙板系统温度场的ANSYS分析方法，分析了不同影响因素对复合墙板在火灾下轻钢龙骨的升温规律的影响。结果表明，防火面板厚度、防火面板材料、墙体填充物和墙体厚度对轻钢龙骨升温影响较大，而轻钢龙骨厚度、轻钢龙骨间距对轻钢龙骨升温影响较小。对81个不同影响因素的复合墙板系统的分析结果进行拟合回归，得到了复合墙板系统中冷弯薄壁型钢柱的升温计算公式，利用该公式并采用GB 51249方法推导了墙板系统防火面板最小厚度公式，提出了满足耐火极限的防火面板最小设计厚度，为低层双C型冷弯薄壁复合墙板系统住宅的抗火设计提出了简化方法。

关键词: 双C型；冷弯薄壁型钢；复合墙板系统；抗火性能

Abstract: In order to make the smoke exhausting efficiency of the atrium subway station higher, the influence of different air make-up ways was studied. In this paper, the numerical simulation analysis method is used to analyze the influence of different air make-up ways and volumes on the smoke exhausting efficiency under different scenarios as natural air supplement and mechanical air supplement in station hall or platform. The research shows that when the smoke exhausting volume in station hall is certain, the smoke exhausting efficiency is the highest by using the platform mechanical air make-up. And when the air supplement volume is between 30% and 50%, the best smoke exhausting effect can be achieved.

Key words: atrium subway station; air make-up way; air make-up volume; smoke exhausting efficiency; numerical simulation

梁建国，曾祥康，杨凡，赵方舟. 双C型冷弯薄壁复合墙板系统抗火性能研究[J]. 消防科学与技术, 2022, 41(3): 339-342.

DUANMU Xiang-ling， ZHAN Zi-na， LI Lei，SONG Yun-long. Research on the efficiency of smoke exhausting with diverse air make-up ways in atrium subway station[J]. Fire Science and Technology, 2022, 41(3): 339-342.