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采用双剪统一强度理论（俞茂宏，1991）求出了矩形板的塑性极限荷载的统一解，得出了不同参数b值对极限荷载的影响曲线，从而得出了一系列从Tresca的单剪屈服准则解到双剪应力屈服准则（俞茂宏，1961）的矩形板极限荷载。文献中己有的Tresca解为本文的一个特例。将其用于混凝土矩形板的极限荷载计算，得出了满意的结果。双剪统一强度理论可以给出更符合于各种不同材料特性的合理解。
Using the double shear unified strength theory (YU Maohong, 1991), a unified solution of the plastic limit load of a rectangular plate was obtained, and the curve of the influence of different parameters b on the ultimate load was obtained, and a series of single shears from Tresca were obtained. Yield Criterion Solution to the Double Shear Stress Yield Criterion (Yu Maohong, 1961). The Tresca solution already in the literature is a special case of this article. It is used to calculate the ultimate load of concrete rectangular plates and satisfactory results are obtained. Twin shear unified strength theory can give a better understanding of various different material properties.