| 基于FDS模拟分析的建筑大空间火灾下钢构件的升温确定方法研究 |
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| 引用本文： | 张超,李国强.基于FDS模拟分析的建筑大空间火灾下钢构件的升温确定方法研究[J].防灾减灾工程学报,2012(Z1):68-71. |
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| 作者姓名： | 张超 李国强 |
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| 作者单位： | 同济大学土木工程学院 |
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| 摘 要： | 利用火灾动力学模拟软件FDS,模拟了大空间火灾作用下裸露钢梁及钢柱的升温情况。介绍了绝缘表面温度法的基本原理。通过对FDS模拟得到的钢构件不同位置处的绝缘表面温度与周围气体温度的比较,显示了大空间火灾中火焰辐射对钢构件不同部位升温计算的影响,并据此对大空间火灾作用下钢构件升温计算中入射热的计算问题给出了建议。
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| 关 键 词： | 大空间火灾 FDS软件 绝缘表面温度(AST) 钢构件升温 |
FDS Simulation of Temperature Elevation of Steel Members Exposed to Large Space Fire |
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| ZHANG Chao,LI Guo-qiang.FDS Simulation of Temperature Elevation of Steel Members Exposed to Large Space Fire[J].Journal of Disaster Prevent and Mitigation Eng,2012(Z1):68-71. |
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| Authors: | ZHANG Chao LI Guo-qiang |
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| Institution: | (College of Civil Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | Adiabatic surface temperature(AST) is adopted to study the temperature heating of steel members exposed to localized fire.A numerical study using FDS is presented.The AST obtained by FDS is compared with the air temperature around the steel members.Results show that the flame radiation of fire has significant effect on the heating of the steel members.Some useful suggestions about adopting radiation heating item in temperature calculation are put forward. |
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| Keywords: | large space fire FDS adiabatic surface temperature(AST) steel temperature elevation |
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