| 方钢管混凝土轴压短柱的力学性能 |
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| 引用本文： | 李小伟,赵均海,朱铁栋,王亮.方钢管混凝土轴压短柱的力学性能[J].中国公路学报,2006,19(4):77-81. |
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| 作者姓名： | 李小伟 赵均海 朱铁栋 王亮 |
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| 作者单位： | 长安大学建筑工程学院，长安大学建筑工程学院，长安大学建筑工程学院，长安大学建筑工程学院 陕西西安710061，攀枝花学院土木工程学院，四川攀枝花617000，陕西西安710061，陕西西安710061，陕西西安710061 |
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| 基金项目： | 高等学校博士学科点专项科研项目;陕西省自然科学基金 |
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| 摘 要： | 根据统一强度理论,综合考虑了方钢管混凝土的材料特点,引入了考虑厚边比影响的等效约束折减系数,将钢管混凝土角部非均匀的约束力转化为均匀的约束力,从而将方钢管对混凝土的约束等效为圆钢管对混凝土的约束。在厚壁圆筒的统一强度理论解的基础上,推导了计算钢管混凝土极限承载力的公式,并用该公式对文献资料数据进行了计算对比。结果表明:该公式有很强的适用性,对发挥材料潜力、节约材料很有意义。
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| 关 键 词： | 桥梁工程 方钢管混凝土 统一强度理论 力学性能 极限荷载 |
| 文章编号： | 1001-7372（2006）04-0077-05 |
| 收稿时间： | 2005-08-20 |
| 修稿时间： | 2005年8月20日 |
Mechanics Behavior of Axially Loaded Short Columns with Concrete-Filled Square Steel Tube |
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| LI Xiao-wei , ZHAO Jun-hai , ZHU Tie-dong, WANG Liang.Mechanics Behavior of Axially Loaded Short Columns with Concrete-Filled Square Steel Tube[J].China Journal of Highway and Transport,2006,19(4):77-81. |
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| Authors: | LI Xiao-wei ZHAO Jun-hai ZHU Tie-dong WANG Liang |
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| Abstract: | Authors took the material characteristic of concrete-filled square steel tube(CFSST) into consideration and turned the corner non-uniform confinement force of CFSST to its corner uniform confinement force through the equivalent reduction factor,which considered the thickness side ratio effect,based on the unified strength theory.Thus,the non-uniform confinement force of square steel tube to its core concrete could be turned to the uniform force of equivalent circular steel tube.Based on unified strength theory solutions of thick tube,authors deduced the formula for calculating ultimate bearing capacity of concrete-filled steel tube.Formula solutions was testified by test results of reference.The applicability of the formulas was testified.The result shows that the formulas have significance in exerting material potential and saving material. |
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| Keywords: | bridge engineering concrete-filled square steel tube unified strength theory mechanics behavior ultimate load |
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