陈宝春, 王来永, 欧智菁, 韩林海. 钢管混凝土偏心受压应力—应变试验研究[J]. 工程力学, 2003, 20(6): 154-159.
引用本文: 陈宝春, 王来永, 欧智菁, 韩林海. 钢管混凝土偏心受压应力—应变试验研究[J]. 工程力学, 2003, 20(6): 154-159.
CHEN Bao-chun, WANG Lai-yong, OU Zhi-jing, HAN Lin-hai. EXPERIMENTAL STUDY OF STRESS-STAIN RELATION OF ECCENTRICALLY-LOADED CONCRETE-FILLED STEEL TUBULAR COLUMNS[J]. Engineering Mechanics, 2003, 20(6): 154-159.
Citation: CHEN Bao-chun, WANG Lai-yong, OU Zhi-jing, HAN Lin-hai. EXPERIMENTAL STUDY OF STRESS-STAIN RELATION OF ECCENTRICALLY-LOADED CONCRETE-FILLED STEEL TUBULAR COLUMNS[J]. Engineering Mechanics, 2003, 20(6): 154-159.

钢管混凝土偏心受压应力—应变试验研究

EXPERIMENTAL STUDY OF STRESS-STAIN RELATION OF ECCENTRICALLY-LOADED CONCRETE-FILLED STEEL TUBULAR COLUMNS

  • 摘要: 试验共对18根钢管混凝土偏心受压短柱进行了测试。试验参数包括偏心率和截面参数(含钢率和混凝土强度)。介绍了试件的内容、试验装置与方法,并重点进行了偏心率对钢管混凝土偏压构件受力性能影响的分析。分析结果表明,偏心率大,相同的纵向应变所对应的钢管环向应变小,紧箍力对提高混凝土强度的作用也随之削弱,构件的承载力也明显降低,达到极限承载力时钢管受压边缘的应变值也相应要大。但偏心率对构件的延性系数影响不大。

     

    Abstract: Experiments were carried out on 18 short concrete-filled steel tubular (CFST) columns subjected to eccentric loads. The influence of the load eccentricity ratio and cross-section parameters (steel ratio and concrete strength) on the behavior of eccentrically-loaded CFST columns is analyzed. The test setups and methods are introduced. The results indicate that with the increase of eccentric ratio, the Poisson抯 ratio of steel tube and the effect of confinement force to enhance concrete strength as well as the ultimate load of the CFST column will decrease. It leads to the increase of the strain of the extreme compressive fiber on steel tube at ultimate load. It is found that the eccentric ratio of the column does not affect the ductility property.

     

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