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（四川理工學院建筑工程系 自貢 643000）
【提要】 對普通箍筋軸心受壓柱進行非線性分析時，由于混凝土的應力應變曲線有下降段，當混凝土先達峰值應力后進入下降段，而鋼筋尚未屈服，鋼筋和混凝土不能同時達到各自的極限承載力，柱的承載力不能由兩種材料的承載力簡單疊加。密排環(huán)箍軸心受壓柱是典型的常規(guī)三軸受壓，可用三軸強度準則進行計算，計算結(jié)果偏于保守。
【關(guān)鍵詞】 軸心受壓柱 本構(gòu)模型 單軸強度 多軸強度 極限承載力
Design of Reinforced Concrete Axial Compression Column Considering the Relationship of Stress and Strain/Zhong Xiaobing(Sichuan College of Technology, Zigong 643000, China)
Abstract:In the nonlinear analysis of the axial compression column with plain stirrups, since the stressstrain curve of concrete has the drop section, concrete and steel can not reach the top stress at the same time,and the ultimate capacity of the column isn't the superposition of the two materials. The dense row ring stirrups column under axial compression is in the status of conventional 3daxial compression stress, and the compression strength of it can be calculated with 3daxial strength norms. The calculation result is conservative.
Keywords:axial compression column; constitutive model; uniaxial strength; 3daxial strength; ultimate capacity