[悬伸工字钢梁的弹性侧扭屈曲]

【悬伸工字钢梁的弹性侧扭屈曲】.pdf悬伸工字钢染的弹性侧扭压曲(摘 要)本文研究了悬伸二字钢梁的弹性侧扭屈曲.是伸端受集中荷载作用的两跨是伸梁的整 体稳定性最差,故取其作的典型情况分析。先 建主侧扭屈曲平衡微分方程组及在梁端和支 处的的个边界、连续条件方程.再用有限积分传将侧扭属曲微分才程组离 散成代表各节平衡的线性代嫩齐次方程细.求出使该齐软方程组有零解的最小荷载值即 为是伸梁的侧扭屈曲临界荷载值。这个求群过 程是由电子计算机进行的。所编的通用程序使 用方倾,转高,收敛快。为得到各种参下 的临界荷载或住移,进行了大量的做值求解。Elastic Lateral-Torsional Buckling ofOverhangingI-Beams ZhaoDian-sheng ABSTRACT The elasticlateral-torsional buckling of over-hanging I-beams is examined in this paper.Atwo-spanoverhangingbeam loadedatits tip whichrepresentsthemostunfavourablecondition ofloading forbucklingis takenas the example t人 In addition,elastic buckling load tests of 2 two-span overhanging rolled I-beams have been car- ried out in order tObtain an experimentalverifi- cation of the theoretical analyses。They are in good agreement.Lastly,some conclusions are drawn for the beha- viour of thebuckling of overhanging bean
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