A wide catwalk for erecting double main cables

Abstract

The invention discloses a wide catwalk for erection of double main cables, and belongs to the technical field of bridge construction equipment. The wide catwalk comprises a catwalk gantry, wherein gantry load-bearing cables are fixedly connected onto an upper cross beam of the catwalk gantry; catwalk load-bearing cables and catwalk armrests are fixedly connected onto a lower cross beam of the catwalk gantry; a catwalk surface layer is fixed above the catwalk load-bearing cables; a plurality of cable strand brackets are also arranged on the catwalk gantry; the wide catwalk is characterized in that the catwalk load-bearing cables are arranged at equal intervals; wind-resistant cables are arranged on the catwalk gantry; an anti-torque pull rod is connected between the catwalk gantry and each wind-resistant cable. According to the invention, the problem that catwalks are interfered with each other as a catwalk is erected on each main cable of a suspension bridge in which the clear spacing of the two main cables is relatively small is solved; the wide catwalk has the advantages that the requirements for main cable erection construction are met, the reasonable structural stress of the catwalk is guaranteed, the construction operations are convenient, and good stability is achieved.

Description

technical field [0001] The invention relates to a catwalk structure for assisting the erection of main cables of a suspension bridge, belongs to the technical field of bridge construction equipment, and in particular relates to a wide-width catwalk structure which can be used for erecting double main cables. Background technique [0002] The catwalk structure is mainly used to assist the erection of the main cables of the suspension bridge, including the traction of the main cable strands, the adjustment and measurement of the strands, and the tensioning of the main cables. The structure also provides walkways for construction crews. [0003] At present, the two main cables of the suspension bridge with double main cable structure are mainly erected by setting a catwalk for each main cable. , to enhance the wind resistance of the catwalk structure; however, for a suspension bridge with a small net distance between the two main cables, if two catwalks are still used for erec...

AI Technical Summary

Problems solved by technology

[0009] The present invention proposes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the present invention is to provide a wide-width catwalk for erecting double main cables. The problem of interference between the catwalks when the main cable with a small net distance is erected, and it can meet the requirements of the construction of the main cable erection while ensuring that the structure of the catwalk is reasonably stressed and the construction operation is convenient

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