System for lifting and sliding large-tonnage steel box girder in land area and shoal area and construction method thereof

Abstract

The invention relates to the technical field of bridge construction, and discloses a system for lifting and sliding a large-tonnage steel box girder in a land area and a shoal area and a construction method thereof. The method comprises the following steps of: 1, arranging a lifting system beside a pier adjacent to a waterway, and arranging a sliding system below the lifting system and on a land side; 2, conveying a steel box girder section to a lifting position from the waterway, and lifting the steel box girder section by using a lifting device; 3, drawing a lifting transverse beam by usinga jack and a steel stranded wire which are arranged on a lifting longitudinal beam to ensure that the lifting transverse beam, together with the lifting device and the steel box girder section, slides to a position above a sliding platform along the lifting longitudinal beam; 4, descending the steel box girder section to the sliding platform by using the lifting device; and 5, sliding the steel box girder section to a design position along a sliding track by using drawing equipment and arranging in position. The problem that a large floating crane is limited by the water level of a river channel and influenced by tide is solved, the construction period of a single steel box girder section is shortened, and work efficiency is improved; meanwhile, the steel box girder section can be arranged in the shoal area and the land area.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a lifting and sliding system and a construction method of a large-tonnage steel box girder in a land area and a shoal area. It is suitable for when the large tonnage steel box girder is prefabricated in the factory and transported to the bridge site by water, the large lifting station installed at the bridge site is used to lift, longitudinally move to the design position, and install it in place to realize the steel box girder The overall hoisting of the segment is in place. Background technique [0002] In the existing bridge construction, large-tonnage steel box girders are usually manufactured in factories, transported to the construction site by waterway, and then lifted and installed by a large floating crane. This method usually has high requirements on the navigable water level at the construction bridge site. And it takes a long time to occupy the waterway, ...

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Problems solved by technology

[0002] In the existing bridge construction, large-tonnage steel box girders are usually manufactured in factories, transported to the construction site by waterway, and then lifted and installed by a large floating crane. This method usually has high requirements on the navigable water level at the construction bridge site. And it takes a long time to occupy the waterway, and at the same time, it is limited by the water level of the waterway, which requires high environmental conditions at the construction site, long construction period, low construction efficiency, high cost, and low promotion.

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