SLENDER HIGH-STRENGTH CONCRETE COLUMNS SUBJECTED TO ECCENTRIC LOADING
SLENDER HIGH-STRENGTH CONCRETE COLUMNS SUBJECTED TO ECCENTRIC LOADING
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DOI：
10.1061/(asce)0733-9445(1998)124:3(233
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发表时间：
1998-03
期刊：
影响因子：
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通讯作者：
C. Claeson;K. Gylltoft
中科院分区：
文献类型：
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作者：
C. Claeson;K. Gylltoft
本文介绍了钢筋混凝土柱的试验研究和非线性有限元分析结果。对12根足尺方形截面柱进行了偏心单调加载试验。研究了混凝土强度、柱间距、柱长、轴压偏心距等关键参数的影响。随着混凝土强度的增加，承载能力显著提高。有限元分析的结果与试验结果吻合良好。进行了参数研究，以检查不同混凝土强度、长宽比和荷载偏心率的破坏模式的差异。当荷载偏心率较小时，混凝土的抗压强度越高越有利。随着偏心距的增大，高强混凝土柱的强度下降速度比普通混凝土柱快。然而，高强度混凝土柱仍然表现出比普通强度柱更大的承载能力。
An experimental study of the behavior of reinforced concrete columns and results of a nonlinear finite-element analysis are presented. Twelve full-scale columns with square sections were tested under eccentric monotonic loading. Effects of key parameters such as concrete strength, stirrup spacing, slenderness of the columns, and eccentricity of the applied axial load were studied. Significant gains in load capacity were obtained with increased concrete strength. The results of the finite-element analysis correlate well with the results of the tests. A parametric study was made to examine the difference in failure modes for the different concrete strengths, length-to-width ratios, and loading eccentricities. The higher compressive concrete strength was especially advantageous when the load eccentricity was small. When the eccentricity was increased, the strength of the high-strength concrete columns decreased more rapidly than that of the normal-strength columns. However, the high-strength concrete columns still exhibited a greater load capacity than the normal-strength columns.