›› 2010, Vol. 49 ›› Issue (增刊01): 7-10.

• 论文 • 上一篇    下一篇

脱空率对偏心受压钢管混凝土力学性能影响研究

刘夏平,唐春会,杨作用,宁运琳,刘爱荣
  

  1. (广州大学土木工程学院,广东 广州 510006)
  • 收稿日期:2010-03-09 修回日期:1900-01-01

Study on the Influence of Separation Ratio on the Mechanics Behavior of Separate Concretefilled Steel Tubes Subjected to Eccentric Compression

LIU XiaPing,TANG Chunhui,YANG Zuoyong,NING Yunling,LIU Airong   

  1. (College of Civi Engineering,Guangzhou University,Guangzhou 510006, China)
  • Received:2010-03-09 Revised:1900-01-01

摘要: 对12个脱空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,试验参数为脱空率,研究在一定偏心率下,脱空钢管混凝土短柱力学性能。试验结果表明,脱空率对钢管混凝土偏压构件受力性能与承载力均有影响,随着脱空率的增大,钢管对核心混凝土的套箍作用不断削弱,构件的极限承载力也明显下降,但比脱空的轴心受压钢管混凝土极限承载力折减要少。

关键词: 钢管混凝, 脱空, 偏心受压, 力学性能

Abstract: Mechanics behavior tests of 12 specimens of separate concretefilled steel tubes subjected to eccentric compression on separate side were carried out.Test paramenter is separation ratio.Study on mechanics behavior of separate concretefilled steel tubes subjected to eccentric compression with a eccentricity ratio.The test results indicate that separation ratio affected both of the mechanics behavior and the carrying capacity of CFST columns under eccentric load.With the load eccentricity ratio increased,the confinement of steel tube to core concrete and the ultimate carrying capacity of the column decreased. The reduction of ultimate carrying capacity of separate concretefilled steel tubes subjected to eccentric load is less than subjected to axial load.

Key words: concretefilled steel tubes, separate, eccentric compression, mechanics behavior

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