| 工字梁在弯矩和均布荷载作用下的整体稳定 |
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| 引用本文： | 杨波.工字梁在弯矩和均布荷载作用下的整体稳定[J].钢结构,2012,27(11):23-25,86. |
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| 作者姓名： | 杨波 |
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| 作者单位： | 广西华蓝设计集团有限公司,南宁,530011 |
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| 摘 要： | 利用ANSYS通用有限元分析软件,分别计算了5种跨度为6,8,9,10,12m的工字梁在一端弯矩和上翼缘横向均布荷载共同作用下的整体失稳。根据有限元分析结果,拟合了双轴对称等截面工字梁在一端弯矩和上翼缘横向均布荷载共同作用下的等效临界弯矩系数βb的回归公式,以期为GB50017-2003《钢结构设计规范》充实等效临界弯矩系数的计算公式提供参考。
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| 关 键 词： | 端弯矩 等效临界弯矩系数 整体稳定 回归公式 有限元分析 |
THE OVERALL STABILITY ANALYSIS OF I-SHAPE BEAMS UNDER THE BENDING MOMENT AND UNIFORM LOAD |
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| Yang Bo.THE OVERALL STABILITY ANALYSIS OF I-SHAPE BEAMS UNDER THE BENDING MOMENT AND UNIFORM LOAD[J].Steel Construction,2012,27(11):23-25,86. |
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| Authors: | Yang Bo |
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| Affiliation: | Yang Bo (Guangxi Hualan Design & Consulting Group Co.Ltd, Nanning 530011, China) |
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| Abstract: | Using finite element analysis software ANSYS, the overall stability of I-beams of span length 6, 8, 9,10, 12 m were simulated respectively, one end of the beams is bending moment, and lateral uniform load distributes top flange. According to the results of finite element analysis, the fitting formula of equivalent critical moment coefficient of steel beams βb is proposed which can provide reference for further improvement on the calculation formula for βb in GB 50017-2003. |
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| Keywords: | end bending moment equivalent critical moment coefficient overall stability regression formula finite element analysis |
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