波纹腹板H形钢吊车梁局部承压承载力

为研究波纹腹板H形钢吊车梁在局部压力作用下的承载力,设计制作了5个试件。试验证明,试件的局压破坏形态为腹板的屈服,呈现出腹板由压力中心依次向两边先后屈服的特征,破坏过程中塑性特征明显。试验得到的极限承载力高于等厚度的平腹板钢梁。有限元方法能够较好地模拟构件的受力过程、极限荷载和破坏模式。经有限元参数分析发现,波纹越稀疏,承载力越低,腹板厚度,翼缘和腹板强度对承载力有直接影响,腹板高度无显著影响。基于研究,提出了设计表达式,经与试验和有限元结果对比,设计方法准确有效,且具有一定的安全储备。...

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Published inJianzhu Gangjiegou Jinzhan Vol. 15; pp. 25 - 31
Main Authors 张哲, 李国强, 孙飞飞, 周学军
Format Journal Article
LanguageChinese
Published Editorial Department of Progress in Steel Building Structures, Tongji University 01.01.2013
Subjects
吊车梁
局部承压强度
有限元方法
波纹腹板H形钢
荷载分布宽度
Online AccessGet full text
ISSN1671-9379

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Abstract 为研究波纹腹板H形钢吊车梁在局部压力作用下的承载力,设计制作了5个试件。试验证明,试件的局压破坏形态为腹板的屈服,呈现出腹板由压力中心依次向两边先后屈服的特征,破坏过程中塑性特征明显。试验得到的极限承载力高于等厚度的平腹板钢梁。有限元方法能够较好地模拟构件的受力过程、极限荷载和破坏模式。经有限元参数分析发现,波纹越稀疏,承载力越低,腹板厚度,翼缘和腹板强度对承载力有直接影响,腹板高度无显著影响。基于研究,提出了设计表达式,经与试验和有限元结果对比,设计方法准确有效,且具有一定的安全储备。
AbstractList 为研究波纹腹板H形钢吊车梁在局部压力作用下的承载力,设计制作了5个试件。试验证明,试件的局压破坏形态为腹板的屈服,呈现出腹板由压力中心依次向两边先后屈服的特征,破坏过程中塑性特征明显。试验得到的极限承载力高于等厚度的平腹板钢梁。有限元方法能够较好地模拟构件的受力过程、极限荷载和破坏模式。经有限元参数分析发现,波纹越稀疏,承载力越低,腹板厚度,翼缘和腹板强度对承载力有直接影响,腹板高度无显著影响。基于研究,提出了设计表达式,经与试验和有限元结果对比,设计方法准确有效,且具有一定的安全储备。
Author 张哲
孙飞飞
李国强
周学军
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SubjectTerms 吊车梁
局部承压强度
有限元方法
波纹腹板H形钢
荷载分布宽度
Title 波纹腹板H形钢吊车梁局部承压承载力
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