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    姜維山  馬樂(lè)為    （西安建筑科技大學(xué) 710055）

    孫慧中   （中國(guó)建筑科學(xué)研究院  北京 100013）

[提要]  為深入認(rèn)識(shí)鋼筋混凝土框架柱軸壓比限值的含義，從框架柱的破壞機(jī)理、配箍構(gòu)造等因素出發(fā)，引伸建立軸壓比與變形角、配箍特征值的關(guān)系式，以便更好理解新修訂的《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范 ( GB50010-2002) 的具體規(guī)定。另外，提出高強(qiáng)螺旋箍筋能增加框架柱抗震性能，是解決框架柱軸壓比問(wèn)題的有效措施，其研究結(jié)果對(duì)發(fā)展應(yīng)用高強(qiáng)混凝土有實(shí)際意義。
[關(guān)鍵詞]  鋼筋混凝土框架柱  軸壓比  配箍特征值  高強(qiáng)螺旋箍筋  變形角

In order to understand the limited value of axial compression ratio of RC frame column of the revised code of RC structure, the article found the relationship between axial compression ratio and deformable angle and characteristic value of stirrups by analysis of destroyed mechanics and stirrup construction of frame columns. ln addition, we draw the conclusion that the high strength stirrup can be used to improve the anti-earthquake behavior of the frame columns, which also will extend the limitation of axial compression ratio.
Keywords: RC frame columns; axial compression ratio; characteristic value; stirrup; high strength; deformable angle