Integral erecting system for large sea-crossing arch bridge and construction method thereof

Abstract

The invention discloses an integral erecting system for a large sea-crossing arch bridge and a construction method thereof. The integral erecting system comprises a semi-submerged ship, a tugboat, modular temporary pier sections, modular temporary support sections, a beam bottom temporary supporting docking bayonet, an arch beam temporary stiffening support, an arch rib assembling support, an arch rib linear regulator, a main beam assembling support and a trestle, wherein the main beam assembling support and the arch rib assembling support are used for integral assembly of a whole arch beam on the bank, the modular temporary pier sections are supported by the trestle, the modular temporary support sections are supported by the semi-submerged ship, and alternate jacking support of the modular temporary pier sections and the modular temporary support sections is achieved by means of the semi-submerged ship through pressurized drainage and tidal fluctuation. According to the integral erecting system, after the whole arch beam is jacked to a designed elevation through pressurized drainage of the semi-submerged ship and tidal fluctuation, the whole arch beam is transferred to a bridge site through floating to be directly erected in place. The invention further discloses a large sea-crossing arch bridge integral erecting construction method.

Description

technical field [0001] The invention relates to erection equipment and a construction method of an arch bridge, in particular to an overall erection system and a construction method of a large-scale sea-crossing arch bridge. Background technique [0002] At present, the construction schemes of cross-sea arch bridges in China mainly include: cable hoisting schemes, full hall support schemes, etc. [0003] The cable hoisting method requires a large-tonnage cable crane, and the second is to assemble two tall towers, and set up buckles, back cables and ground anchors; the cable hoisting method requires long-term high-altitude operations at sea, and the quality of key processes such as welding It is easy to control; it is difficult to adjust the attitude of the arch rib; the cable buckle system uses a large amount of steel, the seawater environment has a large amount of corrosion, less recycling, and the cost is high; in coastal typhoon areas, the typhoon cycle of two years needs...

AI Technical Summary

Problems solved by technology

[0003] The cable hoisting method requires a large-tonnage cable crane, and the second is to assemble two tall towers, and set up buckles, back cables and ground anchors; the cable hoisting method requires long-term high-altitude operations at sea, and the quality of key processes such as welding It is easy to control; it is difficult to adjust the attitude of the arch rib; the amount of steel used in the cable buckle system is large, the amount of corrosion in the seawater environment is large, the recycling is less, and the cost is high; in coastal typhoon areas, the typhoon cycle of two years needs to be spanned, and the construction risk is extremely high

[0004] The construction of the full hall support method requires a large amount of support materials and support foundations, and secondly, it affects navigation; this method requires long-term high-altitude operations at sea, and the construction is greatly affected by wind, rain, and waves, and the construction period is long; it is mainly suitable for shallow water, small Arch bridges with long spans and no navigational requirements

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