摘要
本文对横力弯曲梁在考虑σ＿ｙ应力分量时的塑性铰位置进行探讨。从三个方面分析：１。从理论上分析了σ＿ｙ对弹性阶段的中性层位置没产生影响。２．从理论上分析了考虑σ＿ｙ的Ｍｉｓ－ｅｓ屈服准则后，塑性铰上移了一位置，从而提高了梁的极限承载能力。３．用二维弹塑性有限元进行实例计算，得出了塑性铰上移及极限承载能力提高的结果．
篢his article is on the study of the Position of plastic hinges on transverse bend-ing beam as normal stress σy is considered．The analysis is from three respects：l）．Fromtheory，the article analyses that stress σy scarcely affects the position of neutral surfacein the elastic range，2）．From theory too，the article analyses that plastic hinges upward-ly move a distance after the beam，s Mises Yield Criterion of stress σy is considered，theultimate bearing capacity of the beam is heightened．3）．The example computation withtwo-dimensional elastic-plastic finite element method is taken so as to obtain the re-sult that the plastic hinges move up and the ultimate bearing capacity is heightened。
