Design and construction method of large-segment hoisting self-anchorage cable suspension bridge with hinges between segments

Abstract

The invention discloses a design and construction method of a large-segment hoisting self-anchorage cable suspension bridge with hinges between segments. The construction method of the large-segment hoisting self-anchorage cable suspension bridge with the hinges between the segments comprises the following steps that (1) pouring of bridge towers and bridge piers is carried out, full supports and temporary piers are erected, and main beams are erected on the full supports; (2) main beam segments and hinged structures on the two sides are machined; (3) all the main beam segments are erected on the temporary piers, and the hinged structures on the two sides of the main beam segments are connected; (4) a main cable is erected, hanging rods located on the main beam segments are tensioned, and when rotating angle difference values of the hinged structures are adjusted to be zero, the hanging rods stop being tensioned; and (5) adjacent main beams are welded into a whole, and subsequent cablesuspension bridge construction steps are completed. Through the construction steps, the problem that the large-segment hoisting construction of the self-anchorage cable suspension bridge is difficultto reach a reasonable finished bridge state can be effectively solved, and the competitive force of the self-anchorage cable suspension bridge with a large span and a temporary navigation requirementis further improved.

Description

technical field [0001] The invention belongs to the technical field of bridge design and construction, and in particular relates to a design and construction method of a large-segment hoisting self-anchored suspension bridge with hinges between segments. Background technique [0002] The biggest difference between the self-anchored suspension bridge and the ground-anchored suspension bridge is that the main cable of the ground-anchored suspension bridge is anchored on the ground, while the main cable of the self-anchored suspension bridge is anchored on the main beam, and the main beam bears the huge load transmitted by the main cable. Horizontal force. The construction method of the ground-anchored suspension bridge is relatively simple: first erect the main cable, anchor the main cable to the ground through the anchor spindle, and then hoist the main girder sections to the design position one by one. During this process, the internal force of the main cable is borne by the...

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Problems solved by technology

[0010] The Chinese patent with the publication number CN108505443A proposes the construction steps of jacking-welding-falling back to solve the influence of the initial state, that is, by jacking up the main beam section, the relative displacement between adjacent sections is adjusted to zero, and the welding is completed. After the overall fall back section, according to this cycle, the initial state of the main girder will be eliminated; however, as the span of the large section increases, the jacking amount will also increase correspondingly, and other construction methods are often used because the stroke of the jack is not enough

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