| 方钢管混凝土轴压短柱承载力影响因素分析 |
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| 引用本文： | 张继承,卢海林.方钢管混凝土轴压短柱承载力影响因素分析[J].钢结构,2009,24(7):21-24,32. |
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| 作者姓名： | 张继承 卢海林 |
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| 作者单位： | 1. 长江大学城市建设学院,湖北,荆州,434102;同济大学土木工程学院,上海,200092
2. 长江大学城市建设学院,湖北,荆州,434102 |
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| 摘 要： | 在确定钢材的本构关系和核心混凝土的本构关系的基础上,采用大型通用有限元分析程序ABAQUS建立了轴压荷载下方钢管混凝土柱的三维非线性有限元分析模型,分析了构件的荷载-变形关系;通过算例分析了钢材强度、混凝土强度、宽厚比和套箍系数对方钢管混凝土轴压短柱荷载-变形关系曲线的影响。分析结果表明：混凝土强度等级对构件的荷载-变形曲线的形状影响不大,但随着混凝土强度的提高,构件的承载力有所提高;随着钢材强度的提高,构件承载力也提高。但承载力提高的百分率随着钢材强度的提高而降低。随着宽厚比的减小,构件的承载力提高;套箍系数对构件的承载力有着较大的影响,改变套箍系数会影响构件的荷载-变形关系曲线的形状。
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| 关 键 词： | 方钢管混凝土柱 有限元分析 轴压 极限承载力 |
ANALYSIS OF BEARING CAPACITY FACTORS ABOUT THE SQUARE STEEL TUBE CONCRETE AXIAL COMPRESSION STUB COLUMN |
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| Zhang Jicheng,Lu Hailin.ANALYSIS OF BEARING CAPACITY FACTORS ABOUT THE SQUARE STEEL TUBE CONCRETE AXIAL COMPRESSION STUB COLUMN[J].Steel Construction,2009,24(7):21-24,32. |
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| Authors: | Zhang Jicheng Lu Hailin |
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| Affiliation: | 1.School of Urban Construction;Yangtze University;Jingzhou 434102;China;2. College of Civil Engineering;Tongji University;Shanghai 200092;China |
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| Abstract: | Based on the determination of steel stress-strain relation and core concrete stress-strain relation, the three dimensional nonlinear finite element analysis model of concrete-filled steel square tubular column bearing axial compressive load is established using finite element software ABAQUS, and the member load-deformation relation is analyzed. By the sample, the effects of steel strength, concrete strength, width-thickness ratio and casing hoop steel coefficient on the load-deformation relation curve of s... |
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| Keywords: | concrete-filled steel square tubular column finite element analysis axial compression ultimate bearing capacity |
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