| 端部带约束的超高强度钢材受压构件整体稳定受力性能 |
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| 引用本文： | 施刚,班慧勇,Bijlaard F.S.K.,石永久,王元清.端部带约束的超高强度钢材受压构件整体稳定受力性能[J].土木工程学报,2011(10). |
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| 作者姓名： | 施刚 班慧勇 Bijlaard F.S.K. 石永久 王元清 |
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| 作者单位： | 清华大学土木工程安全与耐久教育部重点实验室;清华大学土木工程系;Delft University of Technology; |
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| 基金项目： | 国家自然科学基金(50708051) |
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| 摘 要： | 高强度钢材(屈服强度≥460MPa)已经在国内外多个钢结构实际工程中得到应用,但关于其受压构件整体稳定性的研究还很少,特别是屈服强度超过690MPa的超高强度钢材。针对两种超高强度钢材S690和S960(名义屈服强度分别为690MPa和960MPa),进行了端部带约束的受压构件整体稳定受力性能的试验研究,试验共包括8个试件。基于试验结果,分析该类钢材构件的失稳破坏形态和屈曲承载力,利用经过验证的有限元模型计算其整体稳定系数,并与欧洲规范和我国规范的柱子曲线进行对比分析。结果表明,超高强度钢材受压构件整体稳定系数的试验值要明显高于其所在的b类柱子曲线,甚至比欧洲规范的a0类柱子曲线和我国规范的a类柱子曲线还要高出很多。这说明超高强度钢材受压柱的屈曲强度较普通强度钢材的屈曲强度有明显提高。这些试验研究和有限元分析成果为完善我国超高强度钢材的稳定设计方法和设计理论提供了重要的试验依据和前提条件,并有利于超高强度钢材在我国钢结构工程中得到更广泛的应用和发展。
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| 关 键 词： | 钢结构 超高强度钢材 钢柱 端部约束 整体稳定 有限元分析 |
Experimental study and finite element analysis on the overall buckling behavior of ultra-high strength steel compression members with end restraints |
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| Shi Gang, Ban Huiyong Bijlaard F.S.K. Shi Yongjiu Wang Yuanqing.Experimental study and finite element analysis on the overall buckling behavior of ultra-high strength steel compression members with end restraints[J].China Civil Engineering Journal,2011(10). |
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| Authors: | Shi Gang Ban Huiyong Bijlaard FSK Shi Yongjiu Wang Yuanqing |
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| Affiliation: | Shi Gang1,2 Ban Huiyong2 Bijlaard F.S.K.3 Shi Yongjiu2 Wang Yuanqing2(1.Key Laboratory of Civil Engineering Safety and Durability of the Ministry of Education,Tsinghua University,Beijing 100084,China,2.Department of Civil Engineering,3.Delft University of Technology,P.O.Box 5048,2600 GA Delft,The Netherlands) |
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| Abstract: | High strength steels with nominal yield strength more than 460MPa have been employed in the construction of steel structures,though research on the buckling behavior of the steel welded section columns lacks,especially for ultra-high strength steels with nominal yield strength more than 690MPa.The overall buckling behavior of ultra-high strength steel compression members with end restraints was experimentally studied using eight specimens,including two types of ultra-high strength structural steels,S690 and... |
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| Keywords: | steel structure ultra high strength steel compression member end restraint overall buckling finite element analysis |
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