火灾作用下混凝土楼板的热力学特性研究
PDF下载 (376)范思婷 1,刘干斌 1*,胡 欣 2.火灾作用下混凝土楼板的热力学特性研究[J].宁波大学学报(理工版),2015,28(04):75-79.DOI:
FAN Si-ting 1,LIU Gan-bin 1*,HU Xin 2.Thermodynamic Properties of the Concrete Slabs under Fire: Study[J].Journal of Ningbo University(Natural Science & Engineering Edition),2015,28(04):75-79.DOI:
| Title: | Thermodynamic Properties of the Concrete Slabs under Fire: Study |
| 作者: | 范思婷 1, 刘干斌 1*, 胡 欣 2 |
| Author(s): | FAN Si-ting 1, LIU Gan-bin 1*, HU Xin 2 |
| 关键词: | 有限元分析; 混凝土楼板; 火灾; 温度场; 热传导; 热效应 |
| Keywords: | finite element analysis; concrete slab; fire; temperature field; thermal conduction; thermal effect |
| 分类号: | TU375 |
| 文献标识码: | A |
| 摘要: | 利用Marc有限元软件建立计算模型, 模拟了混凝土楼板在不同边界条件下的温度场及其分布规律, 再利用温度场进一步分析结构的热力学响应, 并与热传导理论的计算结果进行了比较. 结果表明: 数值模拟结果与理论计算结果相吻合, 研究结果可为混凝土楼板在火灾下的热力学响应的抗火设计提供参考. |
| Abstract: | In this paper, the thermodynamic properties of the concrete slabs under fire is studied by establishing models using the finite element software Marc which is utilized to simulate the temperature field and the regularities of distribution of the concrete slabs in different boundary conditions, and to analyze the thermodynamic response depending on the temperature field. The simulated results are then compared with the results calculated based on the heat transfer theory. The comparison results indicate that the numeric simulation calculations are in good consistence with the theoretical calculations, and may provide good reference value for the fire-resistance design of the thermodynamic response. |
| 参考文献 /References: | [1] 李耀庄, 李昀晖. 我国火灾坍塌事故的调查[J]. 消防科学与技术, 2006, 25(5):694-697. [2] 时旭东, 过镇海. 钢筋混凝土结构的温度场[J]. 工程力学, 1996, 13(1):35-43. [3] 张大长,吕志涛. 火灾过程中混凝土构件内的温度分布[J]. 南京建筑工程学院学报, 1997, 40(1):31-37. [4] Lamont S. Possible ‘panel instability’ in composite deck floor systems under fire[J]. Journal of Constructional Steel Research, 2003, 59(11):1397-1433. [5] Cameron N J K. Limit capacity of laterally restrained reinforced concrete floor slabs in fire[J]. Cement and Concrete Composites, 2004, 26(2):127-140. [6] 余志武, 王中强, 蒋丽忠. 火灾下钢筋混凝土板的温度场分析[J]. 铁道科学与工程学报, 2004, 1(1):58-61. [7] Franssen J M. Numerical determination of 3D tempe- rature fields in steel joints[J]. Fire and Materials, 2004, 28(1):63-82. [8] Kodur V K R, Wang T C, Cheng F P. Predicting the fire resistance behavior of high strength concrete column[J]. Cement & Concrete Composite, 2004, 26(2):141-153. [9] Lira L, Buchanan A, Moss P. Numerical modeling of two-sway reinforced concrete slabs in fire[J]. Engineering Structures, 2004, 26(8):1081-1091. [10] 马延军. 高温下钢筋与混凝土的热工性能和力学性能[J]. 中国西部科技, 201l, 19:37-38. |
| 备注/Memo: | 收稿日期: 2014-01-05. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（51278256, 51178227）; 宁波市科技计划项目（2013C50005）; 浙江省新苗人才计划（2014R405075）. 第一作者: 范思婷（1989－）, 女, 浙江绍兴人, 在读硕士研究生, 主要研究方向: 岩土工程. E-mail: 411459044@qq.com *通信作者: 刘干斌（1976－）, 男, 江西吉安人, 博士/教授, 主要研究方向: 软土地下工程. E-mail: liuganbin@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
