| 大空间结构各种火灾场景下的温度场分布 |
| |
| 引用本文： | 白音,杨海勇,石永久,王元清. 大空间结构各种火灾场景下的温度场分布[J]. 清华大学学报(自然科学版), 2011, 0(8): 1122-1127 |
| |
| 作者姓名： | 白音 杨海勇 石永久 王元清 |
| |
| 作者单位： | 北京航空航天大学交通科学与工程学院;清华大学基建规划处;清华大学土木工程系土木工程安全与耐久教育部重点试验室; |
| |
| 基金项目： | 高等学校博士学科点专项科研基金资助项目(20091102120034) |
| |
| 摘 要： | 大空间建筑近年来在中国得到了迅速的发展,其防火设计研究工作也日趋受到人们重视。利用流体动力学计算软件FLUENT对大空间建筑中的不同火灾场景进行了数值模拟,着重分析了单个火源位于底面不同位置处以及2个火源同时存在时模型壁面温度场的分布。此外,由于防烟分区和排烟系统等的设置对大空间建筑火灾下的温度分布有较大影响,还对在考虑防排烟装置情况下的结构温度场变化进行了计算与对比。研究结果表明:当火源距离空间壁面较近时,温度沿高度方向梯度很大,沿高度方向不能近似为等温处理;在2个火源同时存在的情况下,不宜将各火源功率直接相加后用单个火源计算结果作为实际温度场的分布,应考虑各火源的相对功率和相对位置的影响。
|
| 关 键 词： | 大空间建筑 温度场 火灾场景 防烟装置 |
Temperature field distribution of large-space structures under various fire scenarios |
| |
| BAI Yin,YANG Haiyong,SHI Yongjiu,WANG Yuanqing. Temperature field distribution of large-space structures under various fire scenarios[J]. Journal of Tsinghua University(Science and Technology), 2011, 0(8): 1122-1127 |
| |
| Authors: | BAI Yin YANG Haiyong SHI Yongjiu WANG Yuanqing |
| |
| Affiliation: | BAI Yin1,YANG Haiyong2,SHI Yongjiu3,WANG Yuanqing3(1.School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China,2.Construction and Campus Planning Office,Tsinghua University,Beijing 100084,3.Key Laboratory of Structural Engineering and Vibration of the Ministry of Education,Department of Civil Engineering,China) |
| |
| Abstract: | Large-space constructions have been rapidly developing in China with the corresponding fire-resisting design and research attracting more and more attention.A CFD soft package,FLUENT,was used to numerically simulate large-space constructions under different types of fire scenarios.The temperature distributions on wall surfaces were analyzed with single fire resource located at various positions and with two fire sources existing at the same time.The smoke-resisting sub areas and devices may remarkably affec... |
| |
| Keywords: | large-space constructions temperature field fire scenario smoke-resisting device |
| 本文献已被 CNKI 等数据库收录！ |
|
