The phrase "one bridge connects three places, and the natural chasm becomes a thoroughfare" refers to the Hong Kong Zhuhai Macao Bridge. As a super large sea crossing channel connecting Hong Kong Zhuhai Macao, this giant dragon perched on the Lingding Ocean has gathered the hard work and brainpower of millions of Chinese research and development personnel.
The Hong Kong Zhuhai Macao Bridge integrates bridges, tunnels, and artificial islands, with a total length of 55 kilometers. It is the world's longest cross sea bridge with the longest overall span, the longest steel structure bridge body, and the longest underwater immersed tube tunnel; The designed service life is 120 years, breaking the "century old tradition" of similar bridges in the world.
A ultra-high molecular weight polyethylene(UHMWPE)fiber that is only a quarter of the thickness of hair is difficult to cut with scissors. The processed textile fabric must be cut using a special machine. The "hair like" ultra-high molecular weight polyethylene fiber is not actually a single filament, but a bundle of composite fibers composed of more and finer fibers. The suspension straps used for the Hong Kong Zhuhai Macao Bridge are composed of over 100000 such silk threads.
The construction process of the Hong Kong Zhuhai Macao Bridge cannot be separated from the lifting of the bridge deck. The cables used in construction such as lifting and closing are made of humwpe fibers. It is a fine thread that is no different from a fishing line. It should be noted that the diameter of the hair thread is only 0.4 millimeters, and its diameter is only 1/10 of that of the hair thread. Although it may seem thin, its toughness is excellent, and its load-bearing capacity can reach 35 kilograms.
The material used to lift the prefabricated components of the Hong Kong Zhuhai Macao Bridge is ultra-high molecular weight polyethylene fiber, with a diameter of only 0.5 millimeters, which is as small as hair silk, but with a strength 20 times that of ordinary nylon rope. Don't underestimate such a thin silk thread. Its load-bearing capacity can reach 35 kilograms, which is equivalent to lifting a child's weight.
The cables used for the lifting of the Hong Kong Zhuhai Macao Bridge consist of a total of 140000 high-performance polyethylene fibers, with the aim of lifting approximately 6000 tons of steel structure concrete prefabricated components to complete the final joint of the underwater tunnel of the Hong Kong Zhuhai Macao Bridge Island Tunnel Project.
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