方钢管-钢骨混凝土偏压柱正截面承载力分析 |
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引用本文: | 赵同峰,;王连广,;吴少敏.方钢管-钢骨混凝土偏压柱正截面承载力分析[J].长安大学学报(建筑与环境科学版),2008(3):92-95. |
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作者姓名: | 赵同峰 ;王连广 ;吴少敏 |
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作者单位: | [1]东北大学资源与土木学院,辽宁沈阳110004; [2]中国人民解放军沈阳炮兵学院基础部,辽宁沈阳110162 |
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基金项目: | 辽宁省重点实验室基金项目(JG-200601) |
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摘 要: | 为了进一步研究方钢管-钢骨混凝土偏心受压柱的力学性能,采用叠加法推导了其在钢管、钢骨受拉、受压区屈服条件下的承栽力计算公式;分析了长细比、偏心率、套箍率、配骨率等参数对偏压构件承载力的影响;通过算例对偏压柱正截面承载力的计算过程进行了演示。结果表明:偏心率的增大使承载力迅速降低;随着长细比的增加,构件的承载力呈直线下降;套箍率、配骨率的增加可以显著提高构件的承载力;得出的偏压承载力的计算公式可用于承载力复核,为方钢管一钢骨混凝土偏压柱设计提供参考。
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关 键 词: | 方钢管混凝土 偏压柱 正截面承载力 长细比 偏心率 |
Cross-section Bearing Capacity Analysis of Eccentrically-loaded Columns of Square Steel Tube Filled with Steel-reinforced Concrete |
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Affiliation: | ZHAO Tong-feng, WANG Lian-guang , WU Shao-min (1. School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, Liaoning, China 2. Department of Foundation, Shenyang Artillery Academy of PLA, Shenyang 110162, Liaoning, China) |
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Abstract: | In order to further study the mechanical properties of eccentrically-loaded column of square steel tube filled with steel-reinforced concrete, authors used superposition method to deduce the calculation formula of cross-section bearing capacity under yield conditions of both compressional and tensile regions of steel tube and steel-reinforced. The influences of slenderness ratio, eccentricity ratio, stirrup ratio, steel-reinforced ratio on bearing capacity of eccentrically- loaded columns were also analyzed. Examples about computation process were given Results indicate that the increase of eccentricity ratio makes its bearing capacity dropped rapidly; bearing capacity drops linearly with the increase of slenderness ratio and increases rapidly with the increase of the stirrup and reinforced ratio ; the calculation formula proposed above can be used for certifying the bearing capacity, and it can offer reference for design of eccentrically-loaded columns Of square steel tube filled with steel-reinforced concrete. |
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Keywords: | square steel tube filled with steel-reinforced concrete eccentrically-loaded column cross-section bearing capacity slenderness ratio eccentricity ratio |
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