Akashi Kaikyo - The longest bridge in the world [XviD-ENG][tntvillage.org]
The Akashi-Kaikyo Bridge, also known as Pearl Bridge, is a suspension bridge in Japan that crosses the Akashi Strait; it links Maiko in Kobe and Iwaya on Awaji Island as part of the Honshu-Shikoku Highway. It is the longest suspension bridge in the world to date, as measured by the length of its center span 1,991 metres (6,532 ft), substantially longer than the second longest suspension bridge, the Danish Great Belt Bridge. Total length is 3,911 metres (12,831 ft). It was planned to be one of three Honshu-Shikoku connecting bridges, annexing two borders of the Inland Sea.
Before the Akashi-Kaikyo Bridge was built, ferries carried passengers across the Akashi Strait in Japan. This dangerous waterway often experiences severe storms, and in 1955, two ferries sank in the strait during a storm, killing 168 children. The ensuing shock and public outrage convinced the Japanese government to develop plans for a suspension bridge to cross the strait. The original plan called for a mixed railway-road bridge, but when construction on the bridge began in April 1986, the construction was restricted to road only, with six lanes. Actual construction did not begin until May 1986, and the bridge was opened for traffic on April 5, 1998. The Akashi Strait is an international waterway and required a 1,500 metres (4,921 ft) wide shipping lane.
The bridge has three spans. The central span is 1,991 metres (6,532 ft), with the two other sections each 960 metres (3,150 ft). The bridge is 3,911 metres (12,831 ft) long overall. The central span was originally only 1,990 metres (6,529 ft) but was stretched by a further metre in the Kobe earthquake on January 17, 1995.
The bridge was designed with a two-hinged stiffening girder system, allowing the structure to withstand winds of 286 kilometres per hour (178 mph), earthquakes measuring to 8.5 on the Richter scale, and harsh sea currents. The bridge also contains pendulums that operate at the resonant frequency of the bridge to dampen forces. The two main supporting towers are 298 metres (978 ft) above sea level, and the bridge can expand up to two meters in one day.
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Length: 46 minuti
Size: 349 MB
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