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采用俞茂宏统一强度理论和统一滑移线场理论对拉压异性楔体的极限荷载进行了分析，得到了统一滑移线解，以往的经典塑性力学的解均为文中解的特例利用此解可合理地得出不同材料的相应解，并能考虑材料的拉压异性和中间主应力效应文中还探讨了所得统一解在岩土工程中的应用
By using the unified strength theory of Yu Maohong and the theory of unified slip line, the ultimate load of the wedge with different tensile and compressive wedges is analyzed, and the uniform slip solution is obtained. The solutions of the classical classical mechanics of plastic deformation are the special cases of this paper. The corresponding solution of different materials can be obtained reasonably and the effect of material ’s tensile and compressive stress and intermediate principal stress can be considered. The application of the resulting unified solution in geotechnical engineering is also discussed.