Prestressed design plays a vital role in continuous beams and continuous rigid bridges, improving the mechanical properties of the structure, effectively using concrete materials, and saving steel. However, unreasonable design may lead to material waste and structural damage, so optimizing design is crucial. At present, the research mainly focuses on the position change of the prestressed bar, the bending angle of the longitudinal prestressed bar, the spacing of the vertical prestressed bar and tensile control. However, the research on improving the computational efficiency of prestressed steel beams is relatively insufficient. Therefore, it is of great significance to deeply explore the rapid beam adjustment method of prestressed concrete beams. This paper proposes a method to calculate the active load effect of the structure and save the results of the live load effect for structural analysis. Numerical examples show that this method can reduce the calculation time by 73% compared with the existing method, effectively reduce costs, improve the sustainability of the project, and is expected to bring more efficient, more economical and sustainable solutions to the engineering field, and promote the development and progress of the project.