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Classification and Identification of Buckling Modes of Steel Columns under Cyclic Loading
| 题名： | Classification and Identification of Buckling Modes of Steel Columns under Cyclic Loading |
| 正文语种： | eng |
| 作者： | Gulen Ozkula;Chia-Ming Uang |
| 作者单位： | Univ. of Wisconsin-Platteville;Univ. of California San Diego |
| 关键词： | Steel beam-column;Local buckling;Lateral-torsional buckling;Slenderness ratios;Hysteretic behavior;Cyclic loading |
| 摘要： | Abstract Wide-flange columns are commonly used for the construction of special moment frames and braced frames. For special moment frames, design engineers routinely use deep sections to meet the stringent code-specified story drift limits in order to achieve economy in recent years. Columns with shallow and stocky sections are common for braced frame construction. Observation made from two recent experimental studies involving both deep and shallow columns under axial compression and cyclic drifts showed a variety of buckling modes. A classification with three cyclic buckling modes is proposed in this paper; subsets of each buckling mode are also presented. A parameter measuring the relative rotational restraint that the web provides to each flange is derived. After calibrating this parameter with the test results, a practical procedure that can predict the governing cyclic buckling mode is proposed. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 8 |
| 页码： | 04023097.1-04023097.12 |
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