摘要
采用“逆算单元长度法”,利用“杆端变形增量相关方程”,本文计算了十八族不同荷载作用下压弯构件面内失稳时的极限承载能力。通过对其相关曲线的分析及三分段最大弯矩加权平均值概念的引入,提出了在不同荷载作用下等效弯矩系数β_(mx)的统一表达式,经与计算结果比较,证明了该表达式的正确性。
This paper presents CCE(contrary calculation element)method and member end deformation incremental interaction equation,and computes 18 family beam-columns in-plane buckling ultimate loadsunder different load conditions.Based on analysing to these interactioncurves and introducing the concept of one-third pivot across span maxi-mum moment weighting mean,a consistant and useful β_(mx) formula isproposed.By comparison with exact solution,the β_(mx) formula is provedto be true.
出处
《土木建筑与环境工程》
EI
CSCD
1992年第S1期42-51,共10页
Journal of Civil,Architectural & Environment Engineering
关键词
梁-柱
等效弯矩
极限承载力
相关方程
弯矩加权平均值
beam-columns
equivalent moment
ultimate load
interaction equation
moment weighting mean
