| 圆钢管混凝土压弯长柱非线性屈曲承载力的理论研究 |
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| 引用本文： | 程晓东, 程莉莎, 叶贵如. 圆钢管混凝土压弯长柱非线性屈曲承载力的理论研究[J]. 工程力学, 2004, 21(6): 131-137. |
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| 作者姓名： | 程晓东 程莉莎 叶贵如 |
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| 作者单位： | 1.杭州市城市基础设施开发总公司, 杭州, 310006;2. 杭州市西湖区建设局, 杭州, 310013;3. 浙江大学土木工程学系, 杭州, 310027 |
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| 摘 要： | 基于三维线弹性大变形理论,构造了三维非线性虚拟层合单元法,利用此法对钢管混凝土压弯长柱的非线性屈曲承载力进行了研究,有限元分析结果与试验结果符合良好.最后,以典型截面形式为例,研究了长细比、偏心率等参数对钢管混凝土长柱承载力的影响,研究结果可供工程设计和施工参考.
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| 关 键 词： | 钢管混凝土压弯长柱 三维非线性虚拟层合单元法 三维线弹性大变形理论 非线性屈曲承载力 长细比 |
| 文章编号： | 1000-4750(2004)06-0131-07 |
| 收稿时间： | 2003-02-27 |
| 修稿时间： | 2003-04-10 |
THEORETICAL STUDY OF NONLINEAR BUCKLING BEARING CAPACITIES OF CONCRETE-FILLED CIRCULAR STEEL TUBE COLUMNS WITH HIGH SLENDERNESS RATIO UNDER ECCENTRIC LOAD |
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| CHENG Xiao-dong, CHENG Li-sha, YE Gui-ru. THEORETICALSTUDY OF NONLINEAR BUCKLING BEARING CAPACITIES OF CONCRETE-FILLED CIRCULAR STEELTUBE COLUMNS WITH HIGH SLENDERNESS RATIO UNDER ECCENTRIC LOAD[J]. Engineering Mechanics, 2004, 21(6): 131-137. |
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| Authors: | CHENG Xiao-dong CHENG Li-sha YE Gui-ru |
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| Affiliation: | 1.Hangzhou Municipal Infrastructure Development Corparation, Hangzhou 310006, China;2. Hangzhou Xihu Development Bureau, Hangzhou 310013, China;3. Department of Civil Engineering, Zhejiang University, Hangzhou 310027, P. R. China |
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| Abstract: | Based on three-dimensional linear elastic large deformation theory, a three-dimensional nonlinear virtual laminate element is proposed. With the element, the nonlinear buckling bearing capacities of concrete filled steel tube columns with high slenderness ratio under eccentric load are evaluated. The test and calculating results are found to in good agreement. In addition, taking the typical cross-section forms as example, the effects of slenderness ratio and eccentricity ratio on the nonlinear buckling capacities of concrete filled steel tube columns are studied. The results are believed to be useful for engineering design and construction. |
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| Keywords: | concrete-filled circular steel tube column three-dimensional nonlinear virtual laminated element method three-dimensional linear elastic large deformation theory nonlinear buckling bearing capacity slen |
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