| G550高强冷弯薄壁槽钢受弯构件力学性能与设计方法 |
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| 引用本文： | 赵金友,王钧,董俊巧.G550高强冷弯薄壁槽钢受弯构件力学性能与设计方法[J].重庆建筑大学学报,2016,38(5):99-107. |
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| 作者姓名： | 赵金友 王钧 董俊巧 |
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| 作者单位： | 东北林业大学土木工程学院, 哈尔滨 150040,东北林业大学土木工程学院, 哈尔滨 150040,东北林业大学土木工程学院, 哈尔滨 150040 |
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| 基金项目： | 黑龙江省自然科学基金（E2015056）；中国博士后科学基金（2015M581411）；住房和城乡建设部科学技术项目（2016-K5-040） |
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| 摘 要： | 为了研究高强冷弯薄壁槽钢受弯构件的力学性能和设计方法，对3种板件加劲形式的G550高强冷弯薄壁型钢槽形截面受弯构件进行了试验研究和有限元参数分析。结果表明，板件加劲形式对高强冷弯薄壁槽钢受弯构件屈曲模式和受弯承载力有显著影响，翼缘V形加劲比腹板V形加劲能够更有效地提高构件抗弯承载力，构件抗弯承载力的变化规律与屈曲模式有关。根据有限元参数分析结果，在已有直接强度法基础上回归出适用于高强冷弯薄壁槽钢受弯构件的直接强度法修正公式。
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| 关 键 词： | 高强冷弯薄壁槽钢 受弯构件 力学性能 直接强度法 抗弯承载力 |
| 收稿时间： | 2015/9/11 0:00:00 |
Mechanical properties and design method of G550 high-strength cold-formed thin-walled channel flexural members |
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| Zhao Jinyou,Wang Jun and Dong Junqiao.Mechanical properties and design method of G550 high-strength cold-formed thin-walled channel flexural members[J].Journal of Chongqing Jianzhu University,2016,38(5):99-107. |
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| Authors: | Zhao Jinyou Wang Jun and Dong Junqiao |
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| Affiliation: | College of Civil Engineering, Northeast Forestry University, Harbin 150040, P. R. China,College of Civil Engineering, Northeast Forestry University, Harbin 150040, P. R. China and College of Civil Engineering, Northeast Forestry University, Harbin 150040, P. R. China |
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| Abstract: | Static test and finite element analysis of high strength cold-formed thin-walled channel flexural members with three types of stiffeners in the flanges and the web were conducted respectively to investigate the mechanical properties and design method of G550 high strength cold-formed thin-walled channel flexural members. The results showed that stiffener type had a significant effect on the member''s bending strength and buckling modes. V type stiffeners in the flanges could increase the bending strength more significantly than V type stiffeners in the web. The change law of the bending strength was related to the buckling mode. Based on the existing direct strength method (DSM) formulas as standard, the revised DSM formulas of high strength cold-formed thin-walled channel flexural members were established according to finite element analysis results. |
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| Keywords: | high-strength cold-formed thin-walled channel steel flexural members mechanical properties direct strength method bending strength |
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