Method for mounting reinforcing steel bars of tower columns of cable-stayed bridge towers

Abstract

The invention discloses a method for mounting reinforcing steel bars of tower columns of cable-stayed bridge towers. The method comprises the following steps: (1) arranging a tower crane on one side of a foundation platform of each tower along the axis of a bridge deck, and arranging two assembly jig frames, close to the corresponding tower crane, of each of two sides of the axis of the bridge deck; (2) pre-assembling reinforcing steel bar sections of the tower columns one by one in each assembling jig frame; (3) hoisting the first assembled reinforcing steel bar section as a first reinforcing steel bar section to the top end of the foundation platform of each tower and carrying out aligned connection, and then taking the reinforcing steel bar section as a frame to cast concrete; (4) aligning and connecting a next reinforcing steel bar section to the top end of the reinforcing steel bar section on which the concrete is cast, and taking the newly connected reinforcing steel bar section as a frame to cast concrete; (5) repeating the step (2) and the step (4) till finishing the mounting of the tower columns. According to the method disclosed by the invention, the construction efficiency of tower mounting is effectively improved, the construction quality is also effectively improved, and meanwhile, the construction safety is ensured.

Description

technical field [0001] The invention relates to a road and bridge construction technology, in particular to a method for installing steel bars of cable-stayed bridge tower columns. Background technique [0002] A cable-stayed bridge is a combined structure composed of cables, towers, and beams as the basic mechanisms. Among them, beams and towers are the main load-bearing components, and the two are combined to form an overall structure. The cable tower of a cable-stayed bridge is a tower-like structure, usually a concrete tower, that supports the main cables. Such as figure 1 As shown, the components of the cable tower 1 of the cable-stayed bridge generally include a foundation cap 11, a lower tower column 12, a beam 13, a middle tower column 14, and an upper tower column 15 from bottom to top, wherein the upper tower column 15 contains stay cables anchored area. [0003] The conventional construction technology of the cable tower of the cable-stayed bridge in the prior ...

AI Technical Summary

Problems solved by technology

The construction of the tower column belongs to the high-altitude operation. Among them, the climbing process of the steel bar formwork and the in-situ binding process of the steel bar not only prolong the constr

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