Design and stability analysis of multi-span continuous reclining special-shaped arch bridge

reclining special-shaped arch bridges;  static calculations;  Stable calculation

Taking Hanjiang North Bridge as an example, the design and arrangement of multi-span continuous reclining special-shaped arch bridge is introduced, the system characteristics of the bridge structure are analyzed, and the static calculation of plane and space shows that the design of the whole bridge structure is reasonable, the concrete stress reserve of arch section, boom, tie rod and V-brace box girder is moderate, and each span displacement meets the specification requirements. The dynamic structure analysis of the main bridge is close to the internal and external stiffness of the A, B, and C three-span structures, and the calculation results of the critical load scale factor for solving the first-order instability mode show that the stability coefficient is greater than 1, the possibility of first-class instability of the structure is small, and the spatial stability also meets the requirements.