Study and application of dislocation repair of arch rib of steel tubular arch bridge with negative pressure grouting

Steel tubular arch bridge is a common bridge style for highway. Dislocation of the concrete at arch rib is a popular disease of such bridge. In order to solve the issue, a grouting material with high strength, low viscosity, high penetration, low temperature resistance and flexibility was used to reinforce dislocation of the arch rib concrete. The excellent properties of the material performed from our reinforcing experiments proved its advantages for dislocation repair of arch rib of steel tubular arch bridge. The research results show a practical significance for the diseases of arch rib concrete.