| 钢管混凝土短柱力学性能研究—实用计算方法 |
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| 引用本文： | 丁发兴, 余志武. 钢管混凝土短柱力学性能研究—实用计算方法[J]. 工程力学, 2005, 22(3): 134-138. |
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| 作者姓名： | 丁发兴 余志武 |
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| 作者单位： | 中南大学土木建筑学院, 湖南长沙, 410075 |
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| 基金项目： | 国家自然科学基金;湖南省科技攻关项目 |
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| 摘 要： | 通过对国内外233个钢管混凝土短柱的有效试验结果的重分析,进一步论证了套箍指标是影响钢管混凝土短柱极限承载力的综合因素,建立了钢管混凝土短柱极限承载力、峰值应变和平台强度等实用计算公式和钢管混凝土短柱组合材料应力-应变全曲线实用计算公式,混凝土强度等级适用范围为C20~C110,其计算结果与试验结果吻合良好.研究成果可供钢管混凝土柱的非线性有限元全过程分析参考.
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| 关 键 词： | 钢管混凝土柱 力学性能 应力-应变关系 极限承载力 套箍指标 |
| 文章编号： | 1000-4750(2005)03-0134-05 |
| 收稿时间： | 2003-04-16 |
| 修稿时间： | 2003-06-18 |
A METHOD FOR CALCULATION OF THE MECHANICAL PROPERTIES OF CONCRETE-FILLED TUBULAR STEEL STUB COLUMNS |
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| DING Fa-xing, YU Zhi-wu. A METHOD FOR CALCULATION OF THE MECHANICAL PROPERTIES OF CONCRETE-FILLED TUBULAR STEEL STUB COLUMNS[J]. Engineering Mechanics, 2005, 22(3): 134-138. |
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| Authors: | DING Fa-xing YU Zhi-wu |
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| Affiliation: | Civil and Architecture College, Central South University, Changsha 410075, China |
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| Abstract: | Based on the analysis of test results of 233 specimens, this paper further demonstrates that confinement index is a factor in ultimate loading capacity. Empirical calculation formulas for ultimate loading capacity, peak strain, remaining strength and stress-strain curves of composite material of concrete filled tubular steel (CFTS) stub columns are established for cubic compressive strength of concrete ranging from 20 to 110MPa. The results show good agreement with experimental data. The present work can be used as reference for non-linear finite element analysis of CFTS columns. |
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| Keywords: | concrete-filled tubular steel columns mechanical properties stress-strain curves ultimate loading capacity confinement index |
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