| 无屈服台阶钢管混凝土(CFST)四肢格构柱轴压试验 |
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| 引用本文： | 祝广,贺冉,曹佳.无屈服台阶钢管混凝土(CFST)四肢格构柱轴压试验[J].湖南城市学院学报(自然科学版),2012(2):1-5. |
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| 作者姓名： | 祝广 贺冉 曹佳 |
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| 作者单位： | 益阳工程公司;湖南城市学院土木工程学院 |
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| 基金项目： | 湖南省教育厅科研基金资助项目(10C050210A017) |
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| 摘 要： | 为了对无屈服台阶钢管混凝土(CFST)四肢格构柱构件的变形及受力特征进行分析,进行了2根无屈服台阶钢管混凝土(CFST)四肢格构柱的轴压试验.该试验在5 000 kN压力试验机上进行.试验结果表明:无屈服台阶钢管混凝土(CFST)轴压四肢格构柱破坏形态为剪切破坏.其破坏前有较明显的征兆,属于延性破坏范畴;轴压四肢格构柱轴压破坏时多处肢柱部位被拉裂,这些部位都位于缀管与肢柱的焊接连接处,由此判断这些部位为构件的薄弱部位.在整个受压过程中斜缀管和平缀管的受力都较小且都处在弹性阶段,说明缀管的用量可能偏大,应该对缀管的用量进行优化.
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| 关 键 词： | 无屈服台阶 钢管混凝土(CFST) 四肢格构柱 轴压试验 |
Axial Compression Test on Non-yield Point of Concrete-filled Steel Tubular(CFST) Four-Tube Laced Columns |
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| ZHU Guang,HE Ran,CAO Jia.Axial Compression Test on Non-yield Point of Concrete-filled Steel Tubular(CFST) Four-Tube Laced Columns[J].Journal of Hunan City University:Natural Science,2012(2):1-5. |
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| Authors: | ZHU Guang HE Ran CAO Jia |
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| Institution: | 1.Yiyang Civil Engineering Corporation.,Yiyang,Hunan 413000,China;2.College of Civil Engineering,Hunan City University,Yiyang,Hunan 413000,China) |
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| Abstract: | In order to analyse the deformation and bearing force characteristic of non-yield point of Concrete-Filled Steel Tubular(CFST) four-tube laced columns,the axial compression test of a total of two non-yield point of CFST four-tube laced columns has been finished.The test was experimented on 500t compression-testing machine.Testing result illustrated that the axial compression failure of non-yield point of CFST four-tube laced columns belongs to the shear failure.There are obvious premonitions before failure.It belongs to ductile failure;there are several crack phenomenon on columns tube at the weld of lacing tubes and columns tube.The stressed batten tubes are situated in elastic phase. |
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| Keywords: | non-yield point CFST four-tube laced column the axial compression test |
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