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	低周反复荷载下夹式钢筋对钢筋混凝土柱破坏形态的影响
	何世钦 ; 安雪晖 ; 小原孝之 ; 松林卓 ; He Shiqin ; An Xuehui ; Obara Takayuki ; Matsubayashi Taku
	2010-06-10 ; 2010-06-10
关键词	钢筋混凝土柱 破坏形态 低周反复荷载 夹式钢筋 屈曲 延性 reinforced concrete column failure mode low cycle reversed loading clip reinforcement buckling ductility TU375.3
其他题名	Effects of clip reinforcement on failure modes of reinforced concrete columns under low cycle reversed loading
中文摘要	一种曲线形夹式钢筋(S-Clip钢筋)用于代替钢筋混凝土柱中的复合箍筋,可解决钢筋混凝土结构配筋复杂,施工难度大的问题。通过两组纵向钢筋配筋率、夹式钢筋置换率不同的四个700mm×700mm截面钢筋混凝土柱的低周反复荷载试验,对现有配筋方式的钢筋混凝土柱和用夹式钢筋置换中间箍筋的钢筋混凝土柱从极限承载力、滞回曲线、破坏形态等方面进行比较,分析了夹式钢筋在钢筋混凝土柱中的作用。研究表明,两种配筋方式均为弯曲破坏,在反复加载下,配置夹式钢筋柱的滞回曲线更趋于丰满。夹式钢筋能更有效地约束纵向受力钢筋和内部混凝土,抑制纵向钢筋的屈曲,减轻内部混凝土的损伤。与现有的配筋方式相比,夹式钢筋可以改善构件的抗震性能。; In order to solve the problem of difficult execution in reinforced concrete columns due to large amount of reinforcement, a S-shaped clip reinforcement was developed to replace compound stirrups. Two groups of columns, with the same cross section of 700 mm �0 mm but different ratios of main reinforcement, were subjected to the low-cycle reversed loading, each of which consist of 2-specimen with the conventional stirrups and the S-shaped clips respectively. Bearing capacity, hysteretic performance and failure mode were compared. And it is proved that the S-shaped clip does not change the failure mode which is demanded by design code and can have higher energy dissipation ability which is demonstrated by the hysteretic curve. Due to better confinement to both concrete core and main reinforcement, the S-shaped clips could effectively prevent the main reinforcement from buckling and result in better performance of ductility. It can be concluded that the seismic behavior of the structures will be improved by the S-shaped clips.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/59651]
专题	清华大学
推荐引用方式 GB/T 7714	何世钦,安雪晖,小原孝之,等. 低周反复荷载下夹式钢筋对钢筋混凝土柱破坏形态的影响[J],2010, 2010.
APA	何世钦.,安雪晖.,小原孝之.,松林卓.,He Shiqin.,...&Matsubayashi Taku.(2010).低周反复荷载下夹式钢筋对钢筋混凝土柱破坏形态的影响..
MLA	何世钦,et al."低周反复荷载下夹式钢筋对钢筋混凝土柱破坏形态的影响".(2010).

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