| 钢筋混凝土板局部受火有限元分析 |
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| 引用本文： | 刘秀英,郝淑英,张琪昌.钢筋混凝土板局部受火有限元分析[J].天津理工大学学报,2007,23(4):43-45. |
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| 作者姓名： | 刘秀英 郝淑英 张琪昌 |
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| 作者单位： | 1. 天津大学,机械工程学院,天津,300072
2. 天津理工大学,机械工程学院,天津,300191 |
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| 基金项目： | 天津市教委资助项目;国家重点实验室基金 |
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| 摘 要： | 用有限元分析的方法对三跨连续钢筋混凝土板火灾下的温度场进行了仿真计算,研究了边跨和边中两跨同时受火时结构的响应.发现两者最大挠度都发生在受火边跨;都是在支座处首先形成裂缝,之后裂缝随温度的升高不断扩展,最终在负筋截断处形成破坏铰,但出现塑性铰的位置和塑性区的范围不同.
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| 关 键 词： | 有限元 钢筋混凝土板 破坏铰 抗火性能 |
| 文章编号： | 1673-095X（2007）04-0043-03 |
| 收稿时间： | 2006-09-04 |
| 修稿时间： | 2006-09-04 |
Numerical analysis on response of reinforced concrete slab in local fire |
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| LIU Xiu-ying,HAO Shu-ying,ZHANG Qi-chang.Numerical analysis on response of reinforced concrete slab in local fire[J].Journal of Tianjin University of Technology,2007,23(4):43-45. |
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| Authors: | LIU Xiu-ying HAO Shu-ying ZHANG Qi-chang |
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| Institution: | 1. School of Mechanical Engineering, Tianjin University, Tianjin 300072, China; 2. School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300191, China |
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| Abstract: | The temperature field of reinforced concrete three-span continuous slabs are simulated,and the behavior in the case of both end span and two adjacent spans in fire was investigated by the finite element method.The results showed that: both two maximal deflections were at the middle point of end span;cracks both appeared in the abutment firstly,then the scope of the crack expanded with the temperature elevating,at last the crack changed into the destroy hinge at the ends of negative moment reinforcement,but the location of the plastic hinge and the scope of the plastic were different. |
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| Keywords: | finite element reinforced concrete slab destroy hinge fire resistance |
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