【作者】 唐述； 刘夏平； 杨作用； 宁运琳； 刘爱荣；

【Author】 Shu tang,Xia-Ping Liu,Zuo-yong Yang,Yun-lin Ning,Ai-rong Liu (College of Civi Engineering,Guangzhou University,Guangzhou,Guangdong 510006)

【机构】 广州大学土木工程学院；

【摘要】 本文对脱空率为0～10.76%的12个钢管混凝土短柱进行了脱空侧偏心受压的极限承载力试验,试验结果表明,随着脱空率的增大,钢管对核心混凝土的紧箍作用不断削弱,构件的极限承载力也明显下降:对极限荷载实测值与国内三本有关规范极限荷载、设计荷载计算值及脱空的轴心受压钢管混凝土极限承载力进行比较分析,并对承载力折减系数-脱空率的关系进行了数学分析,得出其数学关系式,为后续开展的相关研究以及工程设计提供有益的参考。更多还原

【Abstract】 This paper investigates the ultimate bearing capacity of 12 separation CFST specimens which subjected to eccentric compression on separate side,and the specimens" separation ratio are between 0 and 10.76%.The test results indicate that with the load eccentricity ratio increased,the confinement of steel tube to core concrete and the ultimate carrying capacity of the column decreased obviously.A comparison of the ultimate load between test results and the calculated values and design values by the three domestic relevant codes are analyzed as well as the ultimate bearing capacity of the axial compressive separation CFST.And we analysis the relationship between the capacity reduction factor and separation ratio,and finally carry out a mathematical formula.The research provides good reference for the later studies and engineering design.更多还原