Deformation Equivalence Method to Solve Internal Force and Slope on Simple Symmetry Problem in View of Principle of Conversion

Due to lack of geometric method for calculating internal forces of frame with symmetrical structure and symmetrical forces, the deformation equivalence method is used to solve the problem in view of the principle of the conversion method. It finds a new way to fit the fixed end of the analogous beam, and it puts forward analysis steps of the solution of the frame. The concrete process of calculation belongs to primary computation of algebraic equation. It gets analytic solution. The calculation sequence of an example of a frame is advanced.