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.
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.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2010年第6期749-754,共6页
Journal of Shanghai Jiaotong University
基金
上海市重点科研创新项目(09ZZ140)
上海师范大学科研基金(SK200873
DCL200804)
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
concrete-filled circular steel tubular short columns
axial compression
thick-walled tube
twin shear unified strength theory
ultimate bearing capacity
作者简介
梁本亮（1978-）男，山东潍坊市人，博士，讲师，主要从事结构工程方面的研究．E—mail：lbl@shnu．edu．cn．
刘建新（联系人），男，教授，E-mail：ljx163@163．com．
