| 李建涛,闫维纲,朱红亚,王青松,孙金华.高层建筑外立面U型结构火蔓延特性数值模拟研究[J].火灾科学,2012,21(4):174-180. |
| 高层建筑外立面U型结构火蔓延特性数值模拟研究 |
| Numerical simulation on the fire spread in high-rise buildings with U-shaped outside-facade structure |
| 投稿时间：2012-09-08 修订日期：2012-10-03 |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目:国家重点基础研究“973”计划（No. 2012CB719702）的资助 |
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| 中文关键词: 高层建筑 外立面U型结构 火蔓延 数值模拟 |
| 英文关键词:high-rise building U-shaped facade structure fire spread numerical simulation |
| 摘要点击次数: 729 |
| 全文下载次数: 775 |
| 中文摘要: |
| 对高层建筑外立面U型结构竖直火蔓延特性影响进行了数值模拟研究，给出了火蔓延速度、热释放速率、火蔓延温度特性等参数。研究发现U型结构竖直火蔓延是一个加速燃烧的过程，当U型结构的结构因子α在0.4和1.6之间时，其火蔓延速度随着α的增加而增加，这是由于在燃烧过程中U型结构会产生烟囱效应，其强度随着U 型结构结构因子的增大而增大，烟囱效应的增强加速了火蔓延过程。 |
| 英文摘要: |
| In this paper, the fire spread in high-rise buildings with U-shaped outside-facade structure is simulated. The fire spread rate, heat release rate and flame temperature are presented. The results show that the U-shaped structure vertical fire spread of insulation material involves an acceleration process. The fire spread rate increases with the increasing structure factors of U-shaped structure, which is caused by the fact that the U-shaped structure induces the chimney effect in the burning process. Is is also found that the strength of the chimney effect increases with the increase of the structure factor. |
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