| 蔡昕,李宏旭,姚斌,董毓利,李晓东,刘炳海.局部火灾条件下某钢结构屋架的抗火保护研究[J].火灾科学,2005,14(4):251-257. |
| 局部火灾条件下某钢结构屋架的抗火保护研究 |
| Fire Protection of Steel Structure of a Building Roof under Local Fire Conditions |
| 投稿时间：2005-08-28 修订日期：2005-09-30 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目:国家自然科学基金重大国际合作研究项目(50320120156);国家“十五”科技攻关项目(2004BA803B03-1) |
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| 中文关键词: 钢结构屋架 热环境 抗火保护 局部火灾 |
| 英文关键词:Steel Structure Fire Protection Local Fire Thermal Environment |
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| 中文摘要: |
| 本文针对局部火灾条件下钢结构屋架的防火保护问题,结合典型案例提出了一种基于性能计算分析的抗火保护设计评估分析方法。首先通过火灾场景分析及烟气运动模拟计算,得到钢结构屋架所处的热环境,再计算各构件在不同保护条件下的温升及应力分布,并判断构件及结构在不同的保护方式下是否失效,最后得到经济合理的保护区域和防火涂层厚度。该方法可以为类似的局部火灾条件下钢结构抗火保护提供参考。 |
| 英文摘要: |
| In this paper,the economic and reliable fire protection method of steel structure of a building roof under local fire conditions was investigated.The fire scenario was selected for thermal environment estimation,and temperature rise and mechanical response of the steel elements were obtained as well to assess the steel structure performance,with various thickness and locations of fire-proof coating considered.This approach can be used to assess other similar steel structure under local fire conditions as well. |
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