Large-scale steel box beam ashore construction method

Abstract

The invention relates to the technical field of bridge construction, in particular to a large-scale steel box beam ashore construction method. The large-scale steel box beam ashore construction method comprises the steps that water transportation of steel box beams is carried out, boats are used for carrying out the water transportation on the steel box beams, and the steel box beams are arranged on the decks of the boats through bearing timber piers and air bags; locating devices are set, ground anchors are arranged on a shore, and at least four ground anchors are arranged; a shore connecting dock is constructed, retaining walls are built up, sliding rampways are constructed from the retaining walls towards the shore in a stretching mode, and sliding rails are paved on the sliding rampways; ashore bearing is carrying out on the steel box beams by using the air bags, and the steel box beams are transferred to the shore through the air bags. According to the large-scale steel box beam ashore construction method, the operation of lifting, transferring, going aboard and going ashore on the steel box beams is achieved by adopting the air bags, the application of air bag operation is small in restriction of sites, a lifting function and a moving transporting function are provided, large-scale mechanical equipment is not needed, therefore, project cycles can be shortened, and a great amount of capital can be saved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, and more specifically relates to a method for ashore construction of a large steel box girder. Background technique [0002] In the hoisting construction of steel box girders of large bridges, often limited by the terrain and water level, when several sections of steel box girders near the tower are transported to the construction site by barge, they cannot reach the vertical lifting position of the deck crane. In this case, the steel box girder The box girder is generally lifted by a large floating crane, placed on the trestle platform that has been erected in advance, and then pulled to the vicinity of the cable tower by a hoist, and then vertically lifted and installed by a bridge deck crane. [0003] Objective limitations or disadvantages of existing technologies: floating crane equipment has a certain draft requirement. When the water level is shallow or restricted by navigation,...

AI Technical Summary

Problems solved by technology

[0003] Objective limitations or disadvantages of existing technologies: floating crane equipment has a certain draft requirement. When the water level is shallow or restricted by navigation, the floating crane cannot reach the normal lifting position or the bridge site, resulting in the failure of the steel box girder. Installation on shore, and the cost of using floating cranes is quite expensive, often costing millions, and the construction cost is huge

Images