| 圆钢管RPC短柱轴心受压极限承载力分析 |
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| 引用本文： | 闫志刚,张武奇,安明喆.圆钢管RPC短柱轴心受压极限承载力分析[J].北京工业大学学报,2011,37(3):361-367. |
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| 作者姓名： | 闫志刚 张武奇 安明喆 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京,100044;中华人民共和国铁道部,工程管理中心,北京,100844;北京交通大学土木建筑工程学院,北京,100044 |
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| 基金项目： | 国家自然科学基金资助(50508005); 高等学校博士学科点专项科研基金资助(200800041019); 北京交通大学科技基金资助(2007XM031) |
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| 摘 要： | 为了研究钢管活性粉末混凝土(钢管RPC)柱轴心受压力学特性,采用全截面受压方法进行了圆钢管RPC短柱轴心受压试验,测试了其在荷载作用下的变形、应变情况.试验结果表明,在荷载达到极限承载力时,钢管PRC短柱的变形主要处于弹性阶段,当承载力下降到极限承载力的80%～90%后趋于平缓,在总结相关试验资料的基础上,参照CECS 104:99中钢管高强混凝土极限承载力公式,提出了钢管RPC短柱的极限承载力计算经验公式.为了便于工程应用,把公式中的混凝土强度及其对应的系数α进行了扩展,采用扩展后的系数α对试验数据重新进行了计算,计算结果与试验数据符合良好,能满足工程应用.
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| 关 键 词： | 钢管混凝土柱 活性粉末混凝土 极限承载力 轴心受压 |
Analysis of Ultimate Loading Capacity for Circular RPC Filled Steel Tube Stub Columns under Axial Compression |
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| YAN Zhi-gang,ZHANG Wu-qi,AN Ming-zhe.Analysis of Ultimate Loading Capacity for Circular RPC Filled Steel Tube Stub Columns under Axial Compression[J].Journal of Beijing Polytechnic University,2011,37(3):361-367. |
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| Authors: | YAN Zhi-gang ZHANG Wu-qi AN Ming-zhe |
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| Affiliation: | YAN Zhi-gang,ZHANG Wu-qi,AN Ming-zhe(1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China,2.Engineering Management Center of the Ministry of Railways,PRC,Beijing 100844,China) |
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| Abstract: | In order to study the axial compressive mechanical performance of reactive powder concrete(RPC) filled steel tube,an experiment on circular RPC filled steel tube stub columns is conducted to test the deformation and the strain under the axial full section load.The test results show that the main deformation is in elastic stage when the load is up to its ultimate loading capacity and then the load declines to be 80%-90% of the ultimate load.The empirical formula of ultimate loading capacity for the RPC fille... |
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| Keywords: | concrete filled steel tube column reactive powder concrete ultimate loading capacity axial compression |
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