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    郭子雄   呂西林
    (同濟(jì)大學(xué)工程結(jié)構(gòu)研究所 上海 200092)

[提要]  通過對(duì)7個(gè)常規(guī)框架柱試件在低周反復(fù)荷載下所進(jìn)行的試驗(yàn)，重點(diǎn)研究了高軸壓比下框架柱的抗震性能以及軸壓比的變化對(duì)框架柱滯回特性的影響。在對(duì)試件總體變形及塑性鉸區(qū)域局部變形量測(cè)結(jié)果統(tǒng)計(jì)分析和簡(jiǎn)化計(jì)算的基礎(chǔ)上，研究了塑性鉸區(qū)域的彎曲變形、剪切變形和節(jié)點(diǎn)區(qū)鋼筋的粘結(jié)滑移所產(chǎn)生的側(cè)移在框架柱的總側(cè)移中所占的比例及其規(guī)律。
[關(guān)鍵詞]  鋼筋混凝土 框架柱 滯回特性 變形特征

Seven l/3 scale reinforced concrete columns were tested under high axial force and cyclic lateral load. The attention is focused on the seismic behavior of RC frame columns under high axial compression ratio and the effect of the change of axial compression ratio on their hysteretic characteristics. Based on the statistic of test results and a simplified analyses of the global and local deformation, the percentage of each of the deformation components due to flexure, shear within the plastic hinge zone and anchorage slip in the'joint to the global deformation of the columns and their character were investigated.
Keywords: reinforced concrete; frame column; hysteretic characteristics; deformation characteristics