| 引用本文: | 吴明洋,余敏,唐智,方正,徐浩铭.钢筋混凝土地铁上盖平台车辆火灾模拟试验[J].哈尔滨工业大学学报,2021,53(4):31.DOI:10.11918/202003118 |
| WU Mingyang,YU Min,TANG Zhi,FANG Zheng,XU Haoming.Simulation experiment on reinforced concrete top-head platform of metro car depot under vehicle fire[J].Journal of Harbin Institute of Technology,2021,53(4):31.DOI:10.11918/202003118 |
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| 钢筋混凝土地铁上盖平台车辆火灾模拟试验 |
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吴明洋1,余敏1,2,唐智1,2,方正1,2,徐浩铭1
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(1.武汉大学 土木建筑工程学院,武汉 430072; 2.湖北省城市综合防灾与消防救援工程技术研究中心(武汉大学),武汉 430072)
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| 摘要: |
| 为探求钢筋混凝土上盖平台在车辆火灾下的温度演化以及结构的火灾响应,完成了上盖平台的汽车火灾模拟试验。采用缩尺寸试验研究了结构模型室内空间和围护结构的温度分布和变化情况,在此基础上结合分层壳模型对上盖平台楼板进行了有限元耐火模拟。结果表明:在火灾后结构整体保持完整,能满足抗火的需求；所建立的钢筋混凝土楼板热力耦合有限元模型和试验结果吻合良好,进一步验证了试验和数值结合方法的有效性。该研究可为上盖平台结构的车辆及地铁火灾的抗火性能评估提供参考。 |
| 关键词: 车辆火灾 地铁上盖平台 钢筋混凝土 火灾模拟试验 数值模拟 |
| DOI：10.11918/202003118 |
| 分类号:TU375 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(6,4) |
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| Simulation experiment on reinforced concrete top-head platform of metro car depot under vehicle fire |
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WU Mingyang1,YU Min1,2,TANG Zhi1,2,FANG Zheng1,2,XU Haoming1
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(1.School of Civil Engineering, Wuhan University, Wuhan 430072, China; 2.Engineering Research Center of Urban Disasters Prevention and Fire Rescue Technology of Hubei Province (Wuhan University), Wuhan 430072, China)
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| Abstract: |
| In order to investigate the temperature evolution of reinforced concrete top-head platform of metro under fire conditions and its impact on the structure, a scale model test was carried out under vehicle fire. The temperature evolution and distribution of the envelope and indoor space of the model room were measured. On this basis, finite element simulation analysis of the top-head floor was performed combined with layered shell model. Results show that the structure maintained intact after fire, which meets the fire resistance requirements. In addition, a high-temperature thermo-mechanical coupling calculation model for reinforced concrete floor was established, and its simulation results agreed well with test results, which further verified the reliability of the proposed method. The study can provide reference for the fire resistance evaluation of top-head platform of metro. |
| Key words: vehicle fire top-head platform of metro reinforced concrete fire simulation experiment numerical simulation |
