方钢管混凝土柱与外包钢-混凝土组合梁外伸内隔板式节点抗震性能试验研究

提出了一种新型的方钢管混凝土柱与外包U形钢-混凝土组合梁连接节点形式——外伸内隔板钢筋截断式节点。基于"强柱弱梁,节点更强"的抗震设计原则,设计3个试件,并对其进行低周反复荷载试验研究,分析节点的破坏特征,考察节点区的剪切变形,深入研究节点的滞回曲线和骨架曲线,进而研究节点的承载能力、延性、耗能能力、刚度退化等抗震性能。研究结果表明:各试件的破坏主要集中在靠近柱壁的梁端区域,而钢管柱和节点区的变形和应力很小,基本处于弹性阶段;由于梁内混凝土及翼板的组合作用,各节点的滞回曲线呈不对称的纺锤形,无明显捏缩现象,比较饱满,耗能性能良好;各节点试件的位移延性系数和等效粘滞阻尼系数明...

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Published inJianzhu Gangjiegou Jinzhan pp. 82 - 89
Main Authors 林彦, 周学军
Format Journal Article
LanguageChinese
Published Editorial Department of Progress in Steel Building Structures, Tongji University 01.02.2018
Subjects
外伸内隔板钢筋截断式节点
外包钢-混凝土组合梁
抗震性能
方钢管混凝土柱
试验研究
Online AccessGet full text
ISSN1671-9379
DOI10.13969/j.cnki.cn31-1893.2018.01.0010

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Abstract 提出了一种新型的方钢管混凝土柱与外包U形钢-混凝土组合梁连接节点形式——外伸内隔板钢筋截断式节点。基于"强柱弱梁,节点更强"的抗震设计原则,设计3个试件,并对其进行低周反复荷载试验研究,分析节点的破坏特征,考察节点区的剪切变形,深入研究节点的滞回曲线和骨架曲线,进而研究节点的承载能力、延性、耗能能力、刚度退化等抗震性能。研究结果表明:各试件的破坏主要集中在靠近柱壁的梁端区域,而钢管柱和节点区的变形和应力很小,基本处于弹性阶段;由于梁内混凝土及翼板的组合作用,各节点的滞回曲线呈不对称的纺锤形,无明显捏缩现象,比较饱满,耗能性能良好;各节点试件的位移延性系数和等效粘滞阻尼系数明显大于普通钢筋混凝土结构的相应指标;在整个加载过程中,刚度退化稳定。
AbstractList 提出了一种新型的方钢管混凝土柱与外包U形钢-混凝土组合梁连接节点形式——外伸内隔板钢筋截断式节点。基于"强柱弱梁,节点更强"的抗震设计原则,设计3个试件,并对其进行低周反复荷载试验研究,分析节点的破坏特征,考察节点区的剪切变形,深入研究节点的滞回曲线和骨架曲线,进而研究节点的承载能力、延性、耗能能力、刚度退化等抗震性能。研究结果表明:各试件的破坏主要集中在靠近柱壁的梁端区域,而钢管柱和节点区的变形和应力很小,基本处于弹性阶段;由于梁内混凝土及翼板的组合作用,各节点的滞回曲线呈不对称的纺锤形,无明显捏缩现象,比较饱满,耗能性能良好;各节点试件的位移延性系数和等效粘滞阻尼系数明显大于普通钢筋混凝土结构的相应指标;在整个加载过程中,刚度退化稳定。
Author 周学军
林彦
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SubjectTerms 外伸内隔板钢筋截断式节点
外包钢-混凝土组合梁
抗震性能
方钢管混凝土柱
试验研究
Title 方钢管混凝土柱与外包钢-混凝土组合梁外伸内隔板式节点抗震性能试验研究
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