Construction method of cable-stayed bridge without back cables

Abstract

The invention discloses a construction method of a cable-stayed bridge without back cables. The cable-stayed bridge includes a pier, a main bridge deck, two tower columns and stay cables, and the stay cables connect the top of the tower columns and the main bridge deck. , the main bridge deck spans the piers, two tower columns are located on both sides of the main bridge deck, and each tower column is inclined along the bridge direction, and the tops of the tower columns are connected together by three parallel connecting beams . The entire bridge body adopts the tower girder pier structure. The steps are as follows: pour the bridge pier first, and then construct the main bridge deck. During the construction of the main bridge deck, reserve holes for the tower column construction; then, the two tower columns are constructed at the same time. ; Finally, dismantle the construction support frame of the tower column; improve the bridge deck and other auxiliary facilities. The deformation of the support frame is effectively reduced to ensure the construction quality; the construction period is shortened, the working hours are saved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction, in particular to a construction method and equipment for a cable-stayed bridge without back cables. Background technique [0002] The cable-stayed bridge with leaning towers without back cables is a new concept of bridge structure. It uses the tilting of tower columns to balance the dead load and live load of the bridge deck, breaking the traditional design concept of straight tower cable-stayed bridges. Without back cables, it enriches the relationship between the bridge structure and the landscape, and achieves the effect of beautiful shape and unique structure, so it has won the favor of many designers in urban bridges. [0003] A typical case is a cable-stayed bridge built in a city in China. The total length of the bridge is 900m, and the total width of the bridge is 30m. The bridge body adopts separate bridge towers, the inclination angle of the tower columns is 59°, t...

AI Technical Summary

Problems solved by technology

The more segments, the longer it will take for solidification and curing, and the solidification and curing are greatly affected by the interference of environmental factors, and the construction progress is easily affected

To speed up the construction progress, the height of the section can only be increased, but the tower column constructed in front will not be able to bear its weight after the section height is increased, and the inclination of the main tower column also brings difficulties to the precise positioning of the formwork during the construction process. very difficult

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