Steel suspension box hoisting system with integral hoisting function and hoisting method of steel suspension box hoisting system

Abstract

The invention discloses a steel suspension box hoisting system with an integral hoisting function and a hoisting method of the steel suspension box hoisting system, and belongs to the field of sub-beam structure construction. The steel suspension box hoisting system comprises a steel suspension box and an assembly platform of the steel suspension box, wherein the assembly platform comprises a plurality of steel protective cylinders and a plurality of platform beams; penetrating open pores are prefabricated on the protective cylinder walls of all the steel protective cylinders; positioning-guiding mechanisms are arranged at the open pores of all the steel protective cylinders; a whole row of steel protective cylinders movably penetrate through each platform beam through the open pores of the steel protective cylinders; the two ends of each platform beam are exposed from the steel protective cylinders arranged at the two ends of the row; and the steel suspension box comprises the following four parts: a baseplate structure, a wall body structure, cantilever beams, as well as laterally stable supports and section steel suspension rods. By adoption of the steel suspension box hoisting system disclosed by the invention, the safety risk of detaching the assembly platform can be reduced; the time to establish and detach the assembly platform can be shortened to the greatest extent, the work efficiency can be improved, and the engineering progress can be accelerated; materials adopted for the assembly platform can be recycled to the greatest extent; and meanwhile, the difficulty in hoisting construction of the steel suspension box and the labor consumption can be reduced, the construction period can be shortened, and the mounting precision can be easier to control.

Description

technical field [0001] The invention belongs to the field of beam substructure construction and is suitable for construction on water, especially the construction of hanging boxes on water with large-tonnage lifting equipment. Background technique [0002] The hoisting of the steel hanging box is mainly divided into three links: setting up the steel hanging box assembly platform, then assembling the steel hanging box on the assembled platform, and finally disassembling the assembled platform and lowering the steel hanging box. [0003] For the assembly platform of the first link, the traditional craft - multi-point assembly platform: [0004] After the construction of the pile foundation of the bridge cap is completed, remove the pile-forming equipment on the top surface of the drilling platform, and dismantle the bailey, corbel, and joints in the casing area; Steel corbels and short steel beams are welded below to form a multi-point steel hanging box assembly platform, and...

AI Technical Summary

Problems solved by technology

[0008] 1) When cutting, several workers need to carry cutting equipment to drill into the gaps between the steel casings. Since the steel hanging boxes are in the suspended lifting state at this time, there will be great safety hazards, especially when the wind is strong or the tidal effect is strong. obvious area

[0009] 2) When the designed pile foundation spacing is small or the quincunx-shaped isotropic arrangement is adopted, the operating space between the steel casings is narrow, and the corbels and section steel are welded on each steel casing separately, and then cut off separately later, the overall work efficiency is very low. Even affect the progress of the project

[0010] 3) Although its structure is simple, the section steel is short, about 50cm, but the quantity is large, and it cannot be reused later, resulting in waste of materials

At the same time, the tension and compression rods are welded on the steel casing after the steel hanging box is lowered to form a hinge on the steel casing. Influenced by external factors such as tides and water flow forces, the difficulty of installation is greatly increased

[0015] 2) Through the overall lowering process of the core jack and the steel strand, a system conversion needs to be completed in the process of removing the core jack and the steel strand after the hanging box is lowered to the position and the installation of the anti-floating tension bar is completed, which increases the difficulty of construction. And the installation accuracy is difficult to control

The lifting lugs of the tension and compression rods are all welded on site, the welding quality cannot be guaranteed, and the construction period is increased

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