摘要
对带伸臂压杆和变轴力压杆的计算长度进行讨论。文献〔1〕忽视了压力对简支段刚度的影响 ,以致得出的计算长度偏小。为此 ,导出了带伸臂压杆的屈曲条件和计算长度的近似计算公式。文献〔2〕用能量法分析变轴力压杆 ,所取变形曲线明显偏离实际屈曲变形曲线。为此 ,用Newmark逐次逼近法对计算结果的误差度加以检验 。
The effective lengths of two sorts of compression members,namely simply supported strut with overhang and strut with varying axial compression,are discussed in this article It is pointed out that reference〔1〕 overlooked the effect of compression on the rigidity of the supported portion of the strut so as to underestimate its effective length The buckling condition is derived herein and an approximate formula given as well In reference〔2〕 the problem of varying axial compression was solved by energy metho...
出处
《钢结构》
2004年第1期38-40,共3页
Steel Construction
关键词
压杆
稳定
屈曲
计算长度
compression member stability buckling effective length
