It's hard for me to choose this top

It's hard for me to choose this topic. In the next 10 weeks, I will diligently fulfill the tasks set by the teacher and use the relevant professional background in practice flexibly, expand my professional vision, practice my practical abilities and lay a solid foundation for future work. It is designed as a freeway (30 m + 50 m + 30 m) from continuous prestressed concrete beams. The beam body has a single box and a three-chamber box section, the thickness of the top plate remains unchanged, while the thickness of the bottom plate and wall remains unchanged. Because of the strength characteristics of a continuous beam bridge, it can withstand a large negative bending moment near the midpoint of the pivot, while the middle span carries a positive bending moment. The height of the beam takes on a beam of variable height that changes with height. To the second parabola. This not only reduces the weight of the beam, but also increases the aesthetic effect of the bridge. Because a continuous beam prestressed concrete bridge is a statically indeterminate structure, manual calculation is difficult and accuracy is difficult to guarantee, so using Midas / Civil software for ancillary calculations not only improves efficiency, but also increases efficiency. Improve accuracy. This time the bridge with continuous beams of prestressed concrete has a simplified design. Because a continuous beam prestressed concrete bridge is a statically indeterminate structure, manual calculation is difficult and accuracy is difficult to guarantee, so using Midas / Civil software for ancillary calculations not only improves efficiency, but also increases efficiency. Improve accuracy. This time the bridge with continuous beams of prestressed concrete has a simplified design. Because a continuous beam prestressed concrete bridge is a statically indeterminate structure, manual calculation is difficult and accuracy is difficult to guarantee, so using Midas / Civil software for ancillary calculations not only improves efficiency, but also increases efficiency. Improve accuracy. This time the bridge with continuous beams of prestressed concrete has a simplified design.