上海交通大学学报

上海交通大学学报（自然版）

• 建筑科学 • 上一篇    下一篇

圆钢管混凝土短柱轴压极限承载力分析

梁本亮，刘建新   

  1. (上海师范大学 建筑工程学院，上海 201418)
  • 收稿日期:2009-09-30 修回日期:1900-01-01 出版日期:2010-06-30 发布日期:2010-06-30

Ultimate Bearing Capacity of ConcreteFilled Circular Steel Tubular Short Columns under Axial Compression

LIANG Benliang，LIU Jianxin   

  1. (College of Civil Engineering, Shanghai Normal University, Shanghai 201418, China)
  • Received:2009-09-30 Revised:1900-01-01 Online:2010-06-30 Published:2010-06-30

摘要： 针对钢管混凝土短柱轴压状态，考虑屈服时钢管竖向应力对承载力的贡献，采用厚壁圆筒理论和双剪统一强度理论，对钢管进行极限承载力分析；对混凝土采用DruckerPrager屈服理论进行钢管约束下的承载力的计算分析，两者叠加得到钢管混凝土的极限承载力计算公式，并与现有试验数据进行对比，结果吻合良好，为圆钢管混凝土轴压短柱极限承载力的计算提供了一种新的方法.

关键词: 钢管混凝土短柱, 轴压, 厚壁圆筒, 双剪统一强度理论, 极限承载力

Abstract: Under the state of axial compression for short columns with concretefilled steel tube, considering the contribution of axial stress of steel tube when yielded, the thickwalled tube theory and twin shear unified strength theory were introduced to analyze the steel tube. DruckerPrager strength criterion was used to analyze the core concrete bearing capacity. Through these methods, the formula for calculating ultimate bearing capacity of concretefilled steel tube was deduced. Compared with the existing experimental data and other equations, the computed results are in good agreement with them and it can provide a new approach to calculate the ultimate bearing capacity of core short columns with concrete filled steel tube under axial compression.

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