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根据弹塑性弯曲变形理论，对矿用矩形等截面直梁构件预弯曲变形问题进行了研究，导出了预弯变量（残余挠度）与预弯弯矩的函数关系，为生产预弯构件提供了理论依据。
According to the theory of elasto-plastic bending deformation, the pre-bending deformation of straight rectangular members with rectangular cross-section is studied and the relationship between pre-bending deformation (residual flexibility) and pre-bending moment is derived, which provides a theoretical basis for the production of pre-bending members in accordance with.