Cable-stayed bridge steel girder and bridge deck slab combined hoisting equipment and hoisting method

Abstract

The invention discloses cable-stayed bridge steel girder and bridge deck slab combined hoisting equipment and a hoisting method. Steel girders and hoisting equipment of bridge deck slabs are integrally combined, and the steel girders are hoisted by a bridge deck crane. A common cantilever gantry crane is adopted for the bridge deck crane and installed on the bridge deck crane; an electric hoist can be moved to the cantilever end of the gantry crane to avoid interference of a stay cable, and a bridge deck slab at the outer side of the stay cable is conveniently hoisted. The cable-stayed bridgesteel girder and bridge deck slab combined hoisting equipment and the hoisting method are used for municipal hoisting of cable-stayed bridge steel girders and bridge deck slabs, and have the advantages in the construction process that the installing speed is high, the safety effect is good and construction is convenient; meanwhile, the construction cost is also controlled, particularly, the safetyin construction is improved, the requirement for hoisting large-tonnage bridge deck slabs can be met, and a reference is provided for hoisting construction of the bridge steel girders and bridge deckslabs of the same type.

Description

technical field [0001] The invention relates to the technical field of cable-stayed bridge construction, and relates to a combined hoisting device and hoisting method for hoisting steel girders and bridge decks of municipal cable-stayed bridges. Background technique [0002] Steel-concrete composite girder cable-stayed bridges generally include steel girders that make up the main body of the bridge. Cable-stayed cables are installed on both sides of the steel girders to connect with the bridge towers, and concrete bridge decks are laid on the steel girders. During the construction of the cable-stayed bridge, the steel girder is hoisted in sections by the bridge deck crane, and fixed by the cable after hoisting, and the bridge deck is hoisted on the steel girder section by the bridge deck crane in blocks. In the construction of municipal roads, when encountering the construction of bridges across lakes and rivers, municipal cable-stayed bridges in the form of long-span steel-...

AI Technical Summary

Problems solved by technology

In the design stage, considering the stress conditions of the cable stays, the non-motorized vehicle lanes and sidewalks are generally designed outside the stay cables. Based on this design, some bridge decks are located outside the stay cables and are heavy. The stay cables have been installed, but due to the obstruction of the stay cables, the bridge deck crane cannot walk to the outside of the stay cables for construction, so the use of ordinary bridge deck cranes cannot meet the needs of hoisting the bridge deck

In addition, in the prior art, the bridge deck and steel girder sections are hoisted using special lifting devices, which not only affects the construction speed but also increases the construction cost

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