摘要
本文给出了计算钢压杆弹塑性稳定极限承载力的有限条塑性系数增量初应力法.用以分析钢压杆局部与整体相关屈曲的极限承载力,得到了中截面的屈曲模式;结果表明大部分的工程实际压杆均表现出明显的局部屈曲与整体屈曲的相互作用;证实了板件的局部屈曲,并不意味着整体极限承载力的丧失.11根H型截面焊接钢压杆的极限承载力试验结果与本文计算结果吻合良好.
The paper presents a numerical method, named the Finite Strip Plasticity Coefficient Increment Initial Stress Method, to solve the elasto-plastic stability ultimate loads of steel columns. The local-overall interactive buckling ultimate carrying capacity of steel columns have been studied by this method and the buckling modes of the centre section of columns are thus obtained. The results show that in engineering practice most columns behave evidently the interaction between local buckling and overall buckling, and that the local buckling of plates does not mean a complete loss of carrying capacity of overall columns at once.The experimental results of eleven tested H-section welding steel columns agree well with those of calculated.
出处
《土木工程学报》
EI
CSCD
北大核心
1994年第4期3-12,共10页
China Civil Engineering Journal
基金
国家自然科学基金资助项目
