Suspension bridge sectional-type catwalk and construction method thereof

Abstract

The invention discloses a suspension bridge sectional-type catwalk and a construction method thereof, which relate to the field of the construction of suspension bridges. The suspension bridge sectional-type catwalk is used for connecting two main towers respectively disposed at two sides of a main span of a suspension bridge and anchorages disposed at two sides of the suspension bridge. Two sides of each main tower are respectively and fixedly provided with a first anchoring apparatus, wherein the two first anchoring apparatuses of the same main tower are connected with each other by virtue of a counter-pulling apparatus pre-embedded in the main tower, and a main span load bearing rope is arranged between the two opposite first anchoring apparatuses of the two main towers; and each anchorage is provided with a second anchoring apparatus, and a side span load bearing rope is arranged between each second anchoring apparatus and the first anchoring apparatus of the opposite main tower.

Description

[0001] The invention relates to the field of suspension bridge construction, in particular to a segmented catwalk for a suspension bridge and a construction method thereof. Background technique [0002] The construction catwalk of the suspension bridge is a high-altitude scaffold erected under the main cable and arranged parallel to the main cable to allow construction personnel to carry out construction work. , Saddle shaping, cable tightening, cable clamp and sling installation, main girder hoisting and site connection, main cable winding, protective coating and other important tasks. At present, the load-bearing cables of the catwalk used in the construction of the suspension bridge are continuous between the anchorage on both sides and the main tower. By setting the steering cable saddle on the top of the tower to cross the main tower structure, since the load-bearing cable needs to cross the top area of ​​the main tower, at the same time In order to ensure that the catwal...

AI Technical Summary

Problems solved by technology

At present, the load-bearing cables of the catwalk used in the construction of the suspension bridge are continuous between the anchorage on both sides and the main tower. By setting the steering cable saddle on the top of the tower to cross the main tower structure, since the load-bearing cable needs to cross the top area of ​​the main tower, at the same time In order to ensure that the catwalk load-bearing cables meet the design requirements on both sides of the main tower, load-bearing cable pull-down devices need to be installed on both sides of the main tower, making the structure of the catwalk in the main tower area complex, the working space is narrow, and the construction of the main cable strands is difficult. Convenience; in addition, because a single load-bearing cable is only provided with a linear cable adjustment device at the anchorage position on both sides of the bank, and at the same time, there are pull-down devices on both sides of the main tower, it is difficult to adjust the linear shape of the load-bearing cable during installation and use. Not easy to hang and remove

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