Bottom-through tie-bar arch bridge and its construction method

Abstract

The invention discloses a through tied arch bridge and a construction method thereof. The through tied arch bridge is composed of two single-piece arch rib units. Each single-piece arch rib unit comprises an arch rib and a tie beam, wherein a hanger rod is arranged between the arch rib and the tie beam. The two arch ribs are connected as a whole through transverse supports. The two tie beams are connected as a whole through transverse beams. A bridge deck slab is erected on the transverse beams. Each arch rib is formed by connecting arch rib sections, each tie beam is formed by connecting tie beam sections, and the arch-shaped arch rib sections and the tie beam sections are arranged correspondingly. Each transverse support is formed by connecting two transverse support sections, wherein the two transverse support sections are fixedly connected on the arch ribs of the two single-piece arch rib units correspondingly. Each transverse beam is formed by connecting two transverse beam sections, wherein the two transverse beam sections are fixedly connected on the tie beams of the two single-piece arch rib units correspondingly. By connecting each group of transverse beam sections and each group of transverse support sections on bridge location construction site, the erection work of a bridge main body can be completed, so that the construction period is shortened effectively, capital investment is reduced, and the construction method is especially suitable for bridge construction of crossing important riverways or important lines.

Description

technical field [0001] The invention relates to highway and municipal bridge technology, in particular to an under-supporting tie-bar arch bridge spanning a river course or a line span, and also relates to a construction method of the tie-bar arch bridge. Background technique [0002] The under-supported tied arch bridge combines the two structures of arch and beam to bear the load together, and fully exerts the combination of beam bending and arch compression. Therefore, the under-supporting arch bridge is a commonly used bridge for new bridges across rivers or lines. type one. [0003] The existing construction methods of the under-supported tied-bar arch bridge mainly include three methods: support construction method, swivel construction method and cantilever construction method. The core problem of the above three construction methods is to solve the construction problem of the arch rib. The support construction method is to erect supports in the river channel for cons...

AI Technical Summary

Problems solved by technology

The above three construction methods all have the disadvantages of long construction period, need to set up temporary facilities (such as brackets, rotating devices or cable devices, etc.), require high construction conditions on site, cannot make full use of existing bridges, and have high costs.

Images