A construction method for the main tower of a cable-stayed bridge with a single curved tower and double cable planes

Abstract

The invention discloses a construction method for a cable-stayed bridge main tower with curve single tower double cable planes. The main tower is divided into multiple sections to be constructed, in other words, the main tower is divided into a lower tower pier lower section, a lower tower pier upper section, a tower and bridge combination section, and an upper tower column first section to an upper tower column highest section from bottom to top, wherein the upper tower column highest section is a tower top decorative block. Ten pairs of stay cables are correspondingly located on the upper tower column third section to the upper tower column second-highest section one to one. By the adoption of the construction method, according to the variable cross-section characteristic of the main tower, a large steel pipe support is erected section by section to serve as a safety operation platform, matched buckling type safety crawling ladders are erected section by section, reinforcing steel bars are bound section by section, a stiff skeleton is machined on a back field and installed on a site section by section, a formwork is erected section by section, the original construction temporary stiff skeleton is used, detachment is not needed, the construction procedures are reduced, the design process is simplified, the construction time is shortened, and the construction cost and safety risks are reduced.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method for a main tower of a cable-stayed bridge with a curved single tower and double cable planes. Background technique [0002] In the construction of traditional concrete towers, floor supports or climbing formwork are generally used. When the height of the inclined cantilever concrete tower is small, the cantilever is long, the angle of inclination is large, the distance from the foundation ground is high, and the self-weight of the pre-buried section of the steel arch tower is large, the traditional construction method, formwork support and stiffness The cost of the skeleton is too high, and the installation accuracy and construction safety risks of the embedded section of the steel arch tower are not easy to control. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art and provide a constructi...

AI Technical Summary

Problems solved by technology

When the height of the inclined cantilever concrete tower is small, the cantilever is long, the angle of inclination is large, the distance from the foundation ground is high, and the self-weight of the pre-buried section of the steel arch tower is large, the traditional construction method, formwork support and stiffness The cost of the skeleton is too high, and the installation accuracy and construction safety risks of the embedded section of the steel arch tower are not easy to control

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