The bridge also contains pendulums that are designed to operate at the resonance frequency of the bridge to damp forces. 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 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 is 3,911 m (12,831 ft) long overall. The central span is 1,991 m (6,532 ft), and the two other sections are each 960 m (3,150 ft). This was a symbol for Japan’s prosperity. An exercise of this magnitude had not yet been attempted. But the 1955 incident compelled the Japanese to think of this bridge soon enough.ģ. The only connection between Kobe and Awaji was by ferry. So this bridge had to be built for that.Ģ. As part of plans to modernize Japan, the various islands that constitute Japan had to be connected. The Akashi Strait is an international waterway that necessitated the provision of a 1,500m wide shipping lane.ġ959 - Ministry of Construction commenced highway study.ġ970 - Honshu-Shikoku Bridge Authority founded.ġ973 - Ministry of Construction approved construction plans.ġ985 - Government decided to construct Akashi Kaikyo Bridge.ġ986 - Geological study of construction site commenced.ġ987 - Construction survey for tower foundation commenced.ġ. Actual construction did not begin until May 1986, and the bridge was opened for traffic on April 5, 1998. 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. The ensuing shock and public outrage convinced the Japanese government to develop plans for a suspension bridge to cross the strait. This dangerous waterway often experiences severe storms, and in 1955, two ferries sank in the strait during a storm, killing 168 children. At a cost of $4.3 billion, it was the most expensive bridge project.īefore the Akashi Kaikyo Bridge was built, ferries carried passengers across the Akashi Strait in Japan. With the central span measuring almost 2km, it was the longest suspension bridge.ģ. At 280m, it was the highest suspension bridge in the world.Ģ. The Akashi strait is one of the world’s busiest shipping lanes with 1000 ships plying through it daily.Īt the time of completion, this bridge held 3 world records:-ġ.
It links Kobe in mainland Japan and the rural fishing island of Awaji as part of the Honshu-Shikoku Highway. The Akashi-Kaikyo Bridge, also known as Pearl Bridge, is a suspension bridge in Japan that crosses the Akashi Strait.
0 kommentar(er)
