History:
Before, akashi Kaikyo Bridge was built, ferries carried passengers across the Akashi Strait in Japan. This dangerous waterway frequently experiences severe storms, and in 1955 two ferries sank in the strait during a storm, killing 168 people. ensuing shock and public outrage convincing the Japanese government developing plans for a suspension bridge to cross the strait. The original plan expelled for a mixed railway-road bridge, but construction on the bridge began in April 1988, the construction was extent to road only, with six lanes. Actual construction work did not took up til May 1988, and the bridge was opened for traffic on April 5, 1998.
Structure:
The bridge has three spans with a central span of 1,991 m (6,532 ft; 1.237 mi), and the two other sections are each 960 m (3,150 ft; 0.60 mi). The bridge is 3,911 m (12,831 ft) long overall. The two towers were originally 1,990 m (6,530 ft; 1.24 mi) apart, but the Great Hanshin earthquake which prone on on January 17 1995, moved the towers so much (only the towers had been erected at the time) resulting increasing of span by 1 m (3.3 ft).
The bridge was designed with a two hinged stiffening girder system, with capability of allowing the structure to withstand winds of 286 kilometres per hour (178 mph), earthquakes measuring up to magnitude of 8.5, harsh sea currents. The bridge also contains tuned mass dampers that are designed to operate at the resonant frequency of bridge damping . The main supporting towers rise 282.8 m (928 ft) above sea level 112 centimetres (44 in) in diameter and contains 36,830 strands of wire.
The Akashi-Kaikyo bridge Consisting total of 1,737 illumination lights: 1,084 for the main cables, 116 for the main towers, 405 for the girders and 132 for the anchorages. On the main cables three high light discharged tubes are mounted in the colors red, green and blue. The RGB model,computer technology make for a variety of combinations. 28 patterns are used for occasions as national or regional holidays, memorial days or festivities.
Before, akashi Kaikyo Bridge was built, ferries carried passengers across the Akashi Strait in Japan. This dangerous waterway frequently experiences severe storms, and in 1955 two ferries sank in the strait during a storm, killing 168 people. ensuing shock and public outrage convincing the Japanese government developing plans for a suspension bridge to cross the strait. The original plan expelled for a mixed railway-road bridge, but construction on the bridge began in April 1988, the construction was extent to road only, with six lanes. Actual construction work did not took up til May 1988, and the bridge was opened for traffic on April 5, 1998.
Structure:
The bridge was designed with a two hinged stiffening girder system, with capability of allowing the structure to withstand winds of 286 kilometres per hour (178 mph), earthquakes measuring up to magnitude of 8.5, harsh sea currents. The bridge also contains tuned mass dampers that are designed to operate at the resonant frequency of bridge damping . The main supporting towers rise 282.8 m (928 ft) above sea level 112 centimetres (44 in) in diameter and contains 36,830 strands of wire.
The Akashi-Kaikyo bridge Consisting total of 1,737 illumination lights: 1,084 for the main cables, 116 for the main towers, 405 for the girders and 132 for the anchorages. On the main cables three high light discharged tubes are mounted in the colors red, green and blue. The RGB model,computer technology make for a variety of combinations. 28 patterns are used for occasions as national or regional holidays, memorial days or festivities.
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