Method of Installing Tied Rods of Long-span Arch Bridge

Abstract

The invention discloses a method for mounting long-span arch bridge tie bars and relates to the field of long-span bridge construction. The method comprises the steps that two main ropes are arrangedon a first buckle tower and a second buckle tower which are adjacent to each other, one end of either vertical temporary support is arranged on an arch rib, and the other end of either vertical temporary support is temporarily anchored nearby a pier of the first buckle tower. Multiple temporary slings are arranged at intervals and connected into an entirety in series by using connection ropes, thetie bars are connected with pulling cables, the pulling cables are used for pulling the tie bars, and the tie bars are placed on all the temporary slings in sequence. The tie bars are continuously pulled till the two vertical temporary supports can be connected with set portions on the tie bars, and one temporarily-anchored end of either vertical temporary support is disassembled and connected with the corresponding tie bar. The tie bars are continuously pulled till one end of each tie bar penetrates through a pipe, and the tie bars are temporarily anchored. The vertical temporary supports are lifted to the designed elevation and locked. According to the method for mounting the long-span arch bridge tie bars, the required temporary materials are few, the sea channel is not occupied, the working period is saved, and the tie bars are convenient to construct.

Description

technical field [0001] The invention relates to the field of long-span bridge construction, in particular to a method for installing tie bars of a long-span arch bridge. Background technique [0002] In the existing arch bridge tie bar construction, the most common method is to complete its installation with the aid of gantry cranes, cable cranes or catwalks. [0003] However, the gantry crane is only suitable for the installation of small-span arch bridge tie rods, and the installation requires a lot of temporary materials, the foundation construction is difficult, the assembly and installation are time-consuming and laborious, and the channel is occupied, which affects the construction period. [0004] When using a cable crane to install the tie rod, there are many artificial high-altitude operations, the risk factor is large, and the cable crane takes a long time, which affects the construction period. [0005] When catwalk auxiliary tie rods are used for installation, t...

AI Technical Summary

Problems solved by technology

[0003] However, the gantry crane is only suitable for the installation of small-span arch bridge tie rods, and the installation requires a lot of temporary materials, the foundation construction is difficult, the assembly and installation are time-consuming and laborious, and it occupies the waterway, which affects the construction period

[0004] When using a cable crane to install tie rods, there are many artificial high-altitude operations, the risk factor is large, and it takes a long time to use the cable crane, which affects the construction period

[0005] When catwalk auxiliary tie rods are used for installation, there are many materials in Dalin, the catwalk construction process is complicated, the flexibility is large, and the overall lateral stability is poor, and it affects the construction of the main beam and the hoisting of the cable crane, prolonging the cycle

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