冷軋帶肋箍筋柱軸壓比及配箍率的試驗研究
王清湘 趙國藩 林立巖
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王清湘 趙國藩 (大連理工大學 大連 116023)林立巖 (遼寧省建筑設計院 沈陽 110005)
[提要] 通過18根冷軋帶肋箍筋柱的試驗研究,分析了軸壓比、箍筋強度、箍筋間距、體積配箍率等因素對構件延性的影響,提出了適用于各種破壞形態(tài)的構件延性評估的新方法。并提出了在不同抗震設計等級下,不同軸壓比情況下配箍率的建議值。
[關鍵詞] 混凝土 柱 冷軋帶肋箍筋 軸壓比 體積配箍率 延性Based on experimental research of 18 columns with cold-rolled ribbed stirrups, the analysis of axial load ratio, stirrup strength, spacing and stirrup volume ratio effects to the columns' ductility are carried out. A new method which can estimate the columns' ductility of different damaged pattern is proposed. Authors also give a suggestion for the stirrups ratio under difference seismic grade and axial load ratio.
Keywords: column; cold-rolled ribbed stirrup; axial load ratio; stirrup volume ratio; ductility