本文根据文献〔1〕、〔2〕对四边简支薄板在单向非均匀分布线性荷载作用下的弹-塑性屈曲问题进行了分析,并与文献〔3〕有关弹性薄板屈曲的结果作了比较,在同样的屈曲应力下,前者的有限宽度比较后者降低约10%,为今后修订钢结构设计规范提供了理论依据。 Based on the literature [1] and [2], the elasto-plastic buckling problem of a simple supported plate with four sides under the action of one-way non-uniformly distributed linear loads is analyzed, and compared with the results of literature [3] on elastic plate buckling. Under the same buckling stress, the former’s limited width is reduced by about 10% compared with the latter, which provides a theoretical basis for the revision of steel structure design specifications in the future.