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| Nonlinear finite element analysis of reinforced concrete slabs in fire |
| Received:October 02, 2012 Revised:August 28, 2013 |
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| DOI：10.7511/jslx201403018 |
| KeyWord:reinforced concrete slab thermo-elastic-plastic transient strain transient modulus fire resistance |
| Author | Institution |
| 王勇 |
中国矿业大学 江苏省土木工程环境灾变与结构可靠性重点试验室, 徐州 ;中国矿业大学 深部岩土力学与地下工程国家重点试验室, 徐州 |
| 董毓利 |
华侨大学 土木工程学院, 厦门 |
| 袁广林 |
中国矿业大学 江苏省土木工程环境灾变与结构可靠性重点试验室, 徐州 |
| 王耀 |
北京工业大学 建筑工程学院, 北京 |
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| Abstract: |
| Based on the flat shell theory,the program has been developed to analyze the two-way reinforced concrete slabs at ambient temperature,and the efficiency of the model was verified in the analysis.In addition,this paper proposed the transient strain model of concrete with transient modulus under the bi-axial stress state.According to the developed temperature program,the proposed model was used to predict the fire behavior of two-way reinforced concrete slabs,and the fire resistance of the slab based on different criteria has been studied in the paper.The results show that the predictions agree well with the experimental results,and demonstrate the validity of the transient strain model.Compared with other criteria,the fire resistance value based on the temperature criterion is relatively conservative. |
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