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Probabilistic Fire Analysis: Material Models and Evaluation of Steel Structural Members
| 题名： | Probabilistic Fire Analysis: Material Models and Evaluation of Steel Structural Members |
| 其他题名： | AISC.(2011).AISC construction manual,appendix 4:Structural design for fire conditions,14th Ed.,Chicago. |
| 正文语种： | 英文 |
| 作者： | Negar Elhami Khorasani |
| 关键词： | Thermal properties of steel;Probabilistic models;Bayesian methodology;Logistic function;Perimeter column;Member analysis;Thermal load;Structural safety and reliability |
| 摘要： | This paper provides a methodology to perform probabilistic analysis of steel structural members under fire loading. As part of developing the methodology, probabilistic models are proposed for mechanical and thermal properties of steel and thermal properties of insulating materials. The two important mechanical properties of steel that significantly influence the results are (1) yield strength, and (2) modulus of elasticity. The models developed for thermal properties include specific heat, thermal conductivity, and thermal strain of steel; and density, thermal conductivity and specific heat for insulating materials. A Bayesian statistical approach is used to develop the proposed probabilistic models using the data available in the literature. The proposed probabilistic models are compared to the available deterministic models from codes and standards. After models are developed for temperature-dependent material properties, a procedure to perform probabilistic analysis of a steel member and an application of the developed models for material properties is explained. A probabilistic analysis of the member makes it possible to calculate the probability of failure and the cumulative distribution function for failure time of the member. The procedure is illustrated with a case study, where the probabilistic performance of a steel perimeter column is examined under thermal loading. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N12007 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001285 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 12 |
| 页码： | 52-66 |
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