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     王  浩    張惠英
    （清華大學(xué)土木工程系  北京 100084）

[提要]  通過(guò)6根配置LL550冷軋帶肋箍筋的高強(qiáng)混凝土柱的抗震性能試驗(yàn)，研究了LL550冷軋帶肋箍筋高強(qiáng)混凝土柱在不同軸壓比和水平往復(fù)荷載作用下的破壞規(guī)律，以及軸壓比、箍筋間距和縱向鋼筋配筋率等對(duì)壓彎構(gòu)件延性的影響。綜合已有高強(qiáng)混凝土壓彎構(gòu)件的試驗(yàn)資料，給出了配LL550冷軋帶肋箍筋高強(qiáng)混凝土柱抗震設(shè)計(jì)中最小含箍特征值限值的建議。
[關(guān)鍵詞]  高強(qiáng)混凝土柱  冷軋帶肋箍筋  抗震設(shè)計(jì)  延性

This paper presents an experimental study on 6 HSC columns with Grade 550 cold-rolled ribbed steel stirrups under constant axial loading and cyclic lateral loading. The failure mode of the columns was investigated. And it was proved that main variables such as the axial load ratio, the stirrups spacing and the longitudinal reinforcement ratio had great effects on the ductility of HSC columns. The minimum stirrups requirements for different antiseismic design grade were proposed。
Keywords: high strength concrete column; cold-rolled ribbed steel stirrups; ductility; antiseismic design