考虑圆弧形壁面影响的大空间建筑火灾空气升温经验公式

梁劲; 薛素铎; 李雄彦

doi:10.13204/j.gyjz201207014

考虑圆弧形壁面影响的大空间建筑火灾空气升温经验公式

doi: 10.13204/j.gyjz201207014

梁劲¹,
薛素铎^1,2,
李雄彦^1,2

1.
1 北京工业大学城市与工程安全减灾省部共建教育部重点实验室北京 100124;
2.
2 北京工业大学工程抗震与结构诊治北京重点实验室北京 100124

基金项目:

北京市自然科学基金项目(8082004)

详细信息

作者简介:
梁劲，女，1984年出生，博士研究生。Email：liangjin@bjut.emails.edu.cn

计量
- 文章访问数: 92
- HTML全文浏览量: 2
- PDF下载量: 78
- 被引次数: 0
出版历程
- 收稿日期: 2012-02-29
- 刊出日期: 2012-07-20

AIR TEMPERATURE EMPIRICAL FORMULA FOR LARGE SPACE STRUCTURE UNDER FIRE CONSIDERING THE EFFECT OF CIRCULAR WALL

1.
1. Key Laboratory of Urban Security and Disaster Reduction Engineering of Ministry of Education,Beijing University of Technology,Beijing 100124,China;
2.
2. Beijing Key Lab of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing 100124,China

摘要

摘要: 目前针对大空间建筑火灾空气升温的数值模拟基本都采用规则的矩形几何模型,然而在实际工程中,大空间建筑为满足使用功能和建筑造型等要求,几何形状经常采用曲面体或壳体。通过FDS程序模拟火灾场景,采用矩形单元拟合圆弧墙的算法,考察了圆弧形壁面对大空间建筑火灾下空气升温过程的影响;同时,基于MATLAB程序非线性拟合方法,建立了考虑圆弧形壁面影响的大空间建筑火灾空气升温经验公式。
- 大空间 /
- 火灾温度场 /
- 非矩形几何模型 /
- 曲线拟合
Abstract: Rectangular geometric model has been used universally for the numerical simulation of air temperature inlarge space structure under fire. For practical structures, however, in order to meet the function and architecturalmodeling requirements, the geometric shapes of large space building are often with curved surfaces or shell. In thispaper, computer simulation was performed by FDS program for fire cases using the algorithm of fitting circular wallbased on rectangular unit. It was summarized the effect of circular wall on air heating-up process for large-spacestructure under fire. Moreover, the empirical formula of air temperature in large space structure, which consideredthe effect of circular wall under fire, was established by a nonlinear curve-fitting method with MATLAB program.
- large space /
- fire temperature field /
- non-rectangular geometric model /
- curve fitting