| 复式钢管高强混凝土轴压短柱力学性能研究 |
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| 引用本文： | 谭克锋,蒲心诚.复式钢管高强混凝土轴压短柱力学性能研究[J].西南科技大学学报,2011,26(3):9-13. |
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| 作者姓名： | 谭克锋 蒲心诚 |
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| 作者单位： | 1. 西南科技大学土木工程与建筑学院,四川绵阳,621010
2. 重庆大学材料科学与工程学院,重庆,400044 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 对复式钢管高强混凝土轴压短柱的力学性能进行了研究,结果证明:混凝土强度越高,荷载-纵向应变曲线线性段比例越大,横向应变越小。钢管约束后,试件的延性得以显著改善,外钢管软化后,内钢管仍起套箍约束增强作用,耐火性良好,获得了复式钢管高强混凝土承载能力计算公式,计算值和实测值吻合良好。
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| 关 键 词： | 高强混凝土 钢管 承载能力 延性 |
Mechanical Properties of Duplex Steel Tubular High Strength Concrete Short Columns |
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| TAN Ke-feng,PU Xin-cheng.Mechanical Properties of Duplex Steel Tubular High Strength Concrete Short Columns[J].Journal of Southwest University of Science and Technology,2011,26(3):9-13. |
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| Authors: | TAN Ke-feng PU Xin-cheng |
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| Institution: | TAN Ke-feng1,PU Xin-cheng2(1.School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China,2.School of Materials Science and Technology,Chongqing University,Chongqing 400044,China) |
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| Abstract: | An experiment was undertaken to study ＇the mechanical properties of duplex steel tubular high strength concrete short columns. Test results show that the higher concrete strength is, the higher linear part of load-longitudinal strain and the lower transverse strain is. The ductility of specimens are improved significantly due to the steel tube confinement. After softening of outer steel tube caused by fire, the inner steel tube still works well. Thus this kind of structure has better fireproofing performance. The formula for calculating the load bearing capacity of duplex steel tubular high strength concrete short columns is obtained. |
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| Keywords: | High strength concrete Steel tube Load bearing capacity Ductility |
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