Cable bent tower box type steel anchor beam and construction method

Abstract

The invention provides a cable bent tower box type steel anchor beam and a construction method. The construction method comprises the main construction steps: (1) conducting construction preparation;(2) checking and accepting the pre-assembly precision of the steel anchor beam; (3) integrally pre-splicing the steel anchor beams; (4) transporting the steel anchor beams; (5) mounting a lifting appliance on the steel anchor beam; (6) mounting a first section of steel anchor beam; (7) heightening and mounting the steel anchor beam tower; and (8) controlling the mounting precision of the steel anchor beam and the steel corbel. The cable bent tower box type steel anchor beam and the construction method have the advantages of being high in construction efficiency and high in assembling precision, having good technical supportability and design and application of the assembling jig frame, greatly improving the assembling construction efficiency of a steel anchor beam and a steel corbel unit,being convenient and reliable in assembling precision regulation and control and remarkable in quality control effect, and bringing good construction and economic benefits to projects and enterprises.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a box-shaped steel anchor beam for a cable tower and a construction method, which are suitable for installation and construction of a box-shaped steel anchor beam for a cable tower. Background technique [0002] Usually, the combined structure of "steel anchor beam + steel corbel unit" is the cable anchoring device in the main tower of the cable-stayed bridge. The installation and construction accuracy of the steel anchor beam and steel corbel unit directly affects the installation and construction accuracy of the cable stay and The final control of the cable force of the bridge, therefore, the key to the construction of the main tower is to precisely control the installation and construction of the steel anchor beam and steel corbel unit. In order to eliminate the deformation that may occur during transportation, after the parts are transported to the construction site, a second...

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Problems solved by technology

[0003] At present, the on-site installation of the steel anchor beam is affected by factors such as the layout of the construction site and the hoisting capacity. At present, there are mainly the following two construction schemes: one is to hoist the steel anchor beam and two steel corbels three times, and assemble them on the tower. Assembling, fine-tuning, and positioning, the disadvantages of this scheme are slow installation speed, complicated process, high difficulty, high risk, and difficult control of installation accuracy; second, the steel anchor beam and steel corbel are first assembled on the ground to form a whole. Then it is hoisted to the tower as a whole for fine adjustment and positioning. Due to the overall weight of the steel anchor beam, the disadvantage of this solution is that it needs to be equipped with hoisting equipment with strong hoisting capacity.

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