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Response of Steel Reduced Beam Section Connections Exposed to Fire
| 题名： | Response of Steel Reduced Beam Section Connections Exposed to Fire |
| 正文语种： | 英文 |
| 作者： | Hussam Mahmoud;Bruce Ellingwood;Collin Turbert;Mehr dad Memari |
| 作者单位： | Colorado State Univ;Engineer, Nelson Engineering, Jackson |
| 关键词： | Finite-element analysis; Reduced beam section (RBS) connections; Steel moment-resisting frames; Performance-based engineering; Fire engineering; Special design issues. |
| 摘要： | Steel structures may be vulnerable to fires; therefore, work is underway in several quarters to advance performance-based engineering (PBE) of steel frames for fire conditions. Both experimentation and finite-element simulations are necessary tools in PBE for assessing the behavior of structures under elevated temperatures. Numerical modeling of the overall structural system using line-element models fails to capture the localized behavior of connections due to the simplistic nature of such models. With advances in computation, attention is shifting to three-dimensional (3D) models, which are better able to capture the behavior of connections. Accurate predictions of structural response require the inclusion of realistic boundary conditions such that the interaction between the connections and the surrounding structure is properly captured. The study reported herein evaluates the response of steel frames with reduced beam section (RBS) connections under a typical compartment fire, with temperature-varying boundary conditions that represent the constraints provided by the remainder of the frame. The results of the study highlight the significance of including realistic boundary conditions during fire simulations. In addition, the results quantify the demand on such connections and contribute to the advancement of performance-based fire engineering. DOI: 10.1061/(ASCE)ST.1943-541X.0001340, © 2015 American Society of Civil Engineers. |
| 出版日期： | 2016.01 |
| 出版年： | 2016 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.142 |
| 期： | NO.01 |
| 页码： | 04015076 |
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