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Performance of precast concrete moment frames subjected to column removal: Part 2, computational analysis
| 题名： | Performance of precast concrete moment frames subjected to column removal: Part 2, computational analysis |
| 正文语种： | 英文 |
| 作者： | Yihai Bao;Joseph A. Main;H. S. Lew;Fahim Sadek |
| 作者单位： | Personnel Act researcher in the Engineering Laboratory at NIST |
| 关键词： | Building;column;connection;disproportionate col-lapse;finite element model;moment-resisting connection;structural robustness |
| 摘要： | This paper presents a computational study of two precast concrete moment-frame assemblies, each comprising three columns and two beams, subjected to displacement-controlled vertical loading of the unsupported center column to simulate a column removal scenario. One assembly was part of an ordinary moment frame, and the other was part of a special moment frame. Finite element models of each assembly were developed to capture the experime tally observed behaviors and failure modes; provide additional insights into behaviors and failure modes that could not be directly observed from the experi-mental data, including the sensitivity of the responses to variations in key factors; and evaluate the structural robustness of the two assemblies by comparing their ultimate capacities with the applicable gravity loading, including the dynamic effects associated with sudden column loss. |
| 出版日期： | 2017.09-10 |
| 出版年： | 2017 |
| 期刊名称： | PCI-Prestressed Concrete Institute Journal |
| 卷： | Vol.61 |
| 期： | No.05 |
| 页码： | 53-74 |
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