| 耐火钢梁的抗火性能参数分析与抗火设计 |
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| 引用本文： | 李国强,丁军. 耐火钢梁的抗火性能参数分析与抗火设计[J]. 钢结构, 2003, 18(5): 52-55 |
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| 作者姓名： | 李国强 丁军 |
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| 作者单位： | 同济大学,土木工程学院,上海,200092 |
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| 基金项目： | 国家杰出青年科学基金项目 ,编号 :5 0 2 2 5 82 5 |
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| 摘 要： | 介绍了耐火钢的高温性能参数及火灾下耐火钢构件的升温计算 ,利用ANSYS有限元分析软件所建立的火灾升温条件下耐火钢梁的非线性有限元分析模型 ,进行了大量的参数分析 ,研究各种参数的变化对耐火钢梁抗火临界温度的影响 ,进而提出耐火钢梁抗火设计的简便方法。最后通过算例验证了方法的可靠性。
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| 关 键 词： | 耐火钢 抗火 临界温度 梁 |
| 修稿时间： | 2003-05-27 |
PARAMETRIC STUDIES AND FIRE-SAFETY DESIGN OF FIRE-RESISTANT STEEL BEAMS |
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| Li Guoqiang Ding Jun. PARAMETRIC STUDIES AND FIRE-SAFETY DESIGN OF FIRE-RESISTANT STEEL BEAMS[J]. Steel Construction, 2003, 18(5): 52-55 |
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| Authors: | Li Guoqiang Ding Jun |
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| Abstract: | First the properties at elevated temperatures of fire-resistant steel and the temperature calculation of fire-resistant steel members subjected to fire are presented in this paper.Then employing a non-linear FEM model of fire-resistant steel beams at elevated temperatures established with the computer program ANSYS,a large number of parametric studies are carried out.Based on the numerical investigations on the effects of various parameters on the critical temperatures of fire-resistant steel beams subjected to fire,a practical approach is then developed for the fire safety design of fire-resistant steel beams.Finally using an example the reliability of the proposed approach is then verified. |
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| Keywords: | fire-resistant steel fire resistance critical temperature beam |
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