Japan: Akashi-Kaikyō Bridge

13. Dez.2008 um 3:45 am | Veröffentlicht in 4 Brücken, Akashi Kaikyo, ASIEN, Japanese bridges, Monitoring, Stahlbrücke | 1 Kommentar
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Akashi Kaikyo Bridge Source: Wikipedia

(Wikipedia) As in many places of the world, ferries crossed the water before the bridge was built. It was the same with 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 Akashi Kaikyō bridge was built in 1998. It got famos for surviving the Kyoto earthquake without any failure, even before the bridge was opened to traffic. With 1990 m span it was built in 1998, after the Earthqauke in Kyoto, it was the bridge with the largest span in the world, 1,991 metres/6,532 feet.

It links the city of Kobe on the mainland of Honshū to Iwaya on Awaji Island by crossing the busy Akashi Strait. It carries the part of the HonshūShikoku Highway. The bridge has three spans: central span is 1,991 m (6,532 ft), and the two other sections are each 960 m (3,150 ft). The central span was originally only 1,990 m (6,529 ft), but the Kobe earthquake on January 17, 1995, moved the two towers sufficiently (only the towers had been erected at the time) so that it had to be increased by 1 m (3.3 ft).

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 are designed to operate at the resonance frequency of the bridge to damp forces. The two main supporting towers rise 298 m (978 ft) above sea level, and the bridge can expand because of heating up to 2 metres (7 ft) over the course of a day. Each anchorage required 350,000 metric tons of concrete. The steel cables have 300,000 km of wire: each cable is 112cm in diameter and contains 36,830 strands of wire.[1][2]

The Akashi Kaikyo bridge has been monitored. The results have been published in SEI 11 No. 2, Mai 2001, S. 120-123

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  1. A fascinating discussion is worth comment. I do think that you need to
    write more on this topic, it may not be a taboo matter but usually people do not discuss these subjects.
    To the next! All the best!!

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