| 钢筋混凝土在火灾中的破坏机制分析 |
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| 引用本文： | 余新盟,查晓雄,HUANG Zhao-hui.钢筋混凝土在火灾中的破坏机制分析[J].火灾科学,2011,20(1):1-8. |
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| 作者姓名： | 余新盟 查晓雄 HUANG Zhao-hui |
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| 作者单位： | 1. 哈尔滨工业大学深圳研究生院土木与环境工程学科部,深圳,518055
2. 英国谢菲尔德大学土木与结构工程系 |
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| 摘 要： | 钢筋混凝土楼板由于材料退化和热膨胀的作用,在火灾条中的破坏机制与常温下有很大的区别,体现在应力分布、变形程度、局部破坏、极限承载力等方面.从数值分析的角度分析了钢筋混凝土楼板在火灾中的破坏机制,对爆裂防护位置提出了建议,并指出了过火结构健康检测时应注意的问题.
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| 关 键 词： | 楼板破坏机制 数值模拟 局部破坏 混凝土开裂 混凝土爆裂 结构抗火 |
| 收稿时间： | 2010/11/23 0:00:00 |
| 修稿时间： | 2010/12/21 0:00:00 |
Failure mechanisms of reinforced concrete slabs in fire |
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| YU Xin-meng,ZHA Xiao-xiong and HUANG Zhao-hui.Failure mechanisms of reinforced concrete slabs in fire[J].Fire Safety Science,2011,20(1):1-8. |
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| Authors: | YU Xin-meng ZHA Xiao-xiong and HUANG Zhao-hui |
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| Institution: | YU Xin-meng1,ZHA Xiao-xiong1,HUANG Zhao-hui2(1.Department of Civil & Environmental Engineering,Harbin Institute of Technology,Shenzhen,518055,China,2.Department of Civil and Structural Engineering,University of Sheffield,UK) |
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| Abstract: | When a slab is subjected to fire attack,the material property degradation and thermal expansion make the failure mechanism quite different from that at ambient temperature in stress distribution,deformation,integrity failure and ultimate load resistance.In this research,the failure mechanism of RC slabs at ambient and in fire is studied analytically and numerically.The study on cracking mechanisms and spalling influence on the fire resistance of RC slabs in fire leads to a general understanding of failure m... |
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| Keywords: | Slab failure mechanism Numerical modelling Integrity failure Concrete cracking Spalling of concrete Structural fire engineering |
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