Huᴍᴀɴs have always been curious about ways to do tasks quickly and cheaply, especially when it comes to issues with the capacity of current roads and highways. In Cʜɪɴᴀ, one such type is now in use. Segmental Bridge Launching Machine – SLJ900/32 bridge girder erection monster machine is the name of the device. For the time being, the SLJ900/32 is being used in Cʜɪɴᴀ to build big, tall rail viaducts, most notably between Chongqing and Wanzhou in the province of Sichuan. The SLJ900/32, created by the Shijiazhuang Railway Design Institute and produced by Beijing Wowjoint Machinery Company, is 91 meters in length and width and weighs a whopping 580 tonnes.
How it works:
Large bridge constructions can now be completed entirely differently thanks to the huge machine, which eliminates the need for costly and intricate scaffolding and support systems. The SLJ900/32 will drive to the bridge pillars and lower a pneumatic support structure that effectively secures the machine to the first pillar, allowing it to extend itself out to the second pillar, after first picking up the required beam from its place of origin. It then continues to a third, depositing the beam along the way. The best way to comprehend how effective, fluid, and fuss-free it is to use is to watch it in action.
The machine moves on a set of 64 wheels that are divided into four portions, each with 16 wheels. The SLJ900/32 can sideways to make it easier to take up beams because each segment can rotate 90 degrees. The SLJ900/32 is able to use beams that are carefully prepared to be full length, unlike traditional crane-based techniques of bridge construction, which have required that beams and other elements come in parts that are typically just a few meters long and are subsequently joined together. These prefabricated sections are connected using expansion joints. Currently, it is claimed that the machine can do up to 730 spans, with 40% of the products able to increase this number to 1000 before reaching the end of its lifespan, which lasts an average of four years.
It is made to be used in the construction of lengthy bridges with numerous spans. This machine is responsible for transporting, installing, and fastening the completed bridge segments to the pre-installed supports. It should be mentioned that while using such a machine still necessitates some ᴍᴀɴual labor, the volume, and intensity of that labor are incomparably reduced compared to the ᴍᴇᴛʜods employed a century ago.
The SLJ900/32 bridge girder erection mega-machine, which measures approximately 91 meters in length, 7.4 meters in width, 9 meters in height, and weighs approximately 580 tons, can erect 700-750 bridge spans in its lifetime, though more than 40% of such machines were able to erect more than 1000 spans, with each weighing between 800 and 950 tons.
Let’s see the bridge girder erection machine: SLJ900 – an amazing construction machine in the ᴀᴡᴇsome video below.
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Video resource: PhyXs Vision