Views: 0 Author: Site Editor Publish Time: 2024-09-26 Origin: Site
Steel boxbeam （Steel structure fabrication）, also known as steel plate boxgirder , is a commonly used structural form for long-span bridges. Its appearance resembles a box, hence the name steel box girder. Steel plate box beams are frequently adopted structural forms in engineering projects due to their versatility and strength.
The steel plate box girder is a commonly adopted structural form in engineering projects. To investigate the influence of diaphragm spacing on the distortion of simply supported steel box girders under concentrated loads, simply supported steel box girders with different numbers of diaphragms were set up to compare their distortion effects and rigid torsional effects under concentrated loads. This allowed for the derivation of the variation curve of the maximum distortion effect with the number of diaphragms. Concentrated loads were applied to the top of the web of the box girder, and calculations were performed using the load decomposition method under four working conditions: distortion, rigid torsion, symmetric bending, and eccentric loading.
With its lifting capacity of over 50 tons, professional design team, welding technology, and installation crew, Zhenjiang Great Wall Heavy Industry is indeed capable of undertaking the fabrication and installation of various Steel Box Beam projects. During the construction of Steel Box Beams, selecting the appropriate construction method is crucial, as it not only affects the project's progress and cost but also directly impacts the safety of construction and the final quality of the bridge.
Based on the resources and capabilities of Zhenjiang Great Wall Heavy Industry, here is a further analysis and recommendation for the aforementioned common construction methods:
Firstly, welding operations are carried out on the ground to weld the components of the beam bridge into segments suitable for staged hoisting.These structures are then installed into their predetermined positions using lifting equipment and further reinforced through welding processes.The advantages lie in the relatively simple operation and the low professional skill requirements; however, the safety of high-altitude operations and welding quality are crucial concerns.
The entire steel box girder bridge structure is assembled on the ground, and then lifted into place in one go using large-scale lifting equipment.This method is suitable for small bridges or bridges with shorter spans, reducing the need for high-altitude operations and enhancing safety.However, it is not suitable for large bridges and requires complex construction techniques and large-scale equipment support.
Prefabricated steel box girder structures are pushed along guide beams to their final positions using equipment such as jacks.This method has lower costs and less demanding requirements for machinery and equipment, but imposes higher requirements on the design of bridge piers, tracks, and guide beams.
The various components are cantilevered and assembled, and then welded together once their positions are confirmed.Characterized by short construction cycles and the ability to work on multiple sections simultaneously, this process is widely used in various construction projects.
In practical applications, Zhenjiang Great Wall Heavy Industry comprehensively considers factors such as project scale, construction environment, cost-benefit analysis, and its own technical capabilities to select the most suitable construction method. Additionally, the company can also consider combining the advantages of multiple technologies to innovatively solve construction challenges and ensure the smooth progress of Steel Box Beam fabrication and installation projects.
