The spectacular view of the bridge in the night resulted in the name, Pearl Bridge. The bridge was opened to traffic on 5 April It forms part of the Honshu-Shikoku Highway. The original design of the bridge was prepared for both cars and trains. Later, the final design was approved only for the road way. The bridge carries nearly 23, cars each day. Research revealed the need for implementing new technology and maintenance techniques for proper management and maintenance of the bridge.
Dry air injection system was one of the technologies used, which was used to maintain the bridge. The bridge was designed to resist strong typhoons of mph and earthquakes up to magnitudes of 8.
It has six lanes of roadway , three in each direction. It consists of three spans. The length of the central span is 1,m, currently the longest span for a suspension bridge. The end spans are m long each. One of the most remarkable bridges in Asia crosses a busy strait in Japan.
This Strait is located south of the city of Kobe and to the east of the major city of Osaka. The waters around the strait are important fishing areas.
The Akashi Strait has a maximum length of 1. The strait is situated between the main Japanese island of Honshu and the island of Awaji. It connects Kobe to the relatively small town of Iwaya on the smaller island.
While Awaji Island is relatively small with a total area of The bridge is part of the Honshu—Shikoku Highway , a road that connects the main island of Japan with Shikoku, one of the other 5 main islands in the country. The bridge is part of a collection of multiple enormous suspension bridges that cross the Seto Inland Sea to reach Shikoku Island from the main island of Honshu.
One of the other main bridges which are part of this amazing network is the Great Seto Bridge , the other one is the Kurushima-Kaikyo Bridge. The Kurushima-Kaikyo Bridge is the longest suspension bridge structure in the world with a total length of 4, meters 13, feet! Currently the longest spanning suspension bridge in the world, the Akashi Kaiko Bridge stretches 12, feet across the Akashi Strait to link the city of Kobe with Awaji-shima Island.
It would take four Brooklyn Bridges to span the same distance! The Akashi Kaikyo Bridge isn't just long -- it's also extremely tall. Its two towers , at feet, soar higher than any other bridge towers in the world. The Akashi Strait is a busy shipping port, so engineers had to design a bridge that would not block shipping traffic. They also had to consider the weather.
Is suspended and supported by the cables cover is held by its own weight, resulting in thousands of steel beams positioned to form a triangular grid. It took 15 months to put the beam sections.
As added reinforcement, below deck, a vertical stabilizer with a form like the fin of a plane that runs through the center of the bridge and balances the pressure, both below and above deck. A steel mesh was placed in the center and side rails to allow passage of the wind. The main material used in the bridge superstructure is steel.
Has also been used reinforced concrete. The Akashi Kaikyo Bridge-has a total of 1, light fixtures: for the main cables, for the main towers, beams and to for the anchors. In the main cables are placed three high capacity lighting tubes, red, green and blue. The RGB model and computer technology contribute in making a wide variety of combinations.
A minimum of 28 patterns are used for special occasions such as regional public holidays or commemorations. The length of the cables used in the bridge amounts to , kilometers, enough to circle the earth 7. Method of construction: PS Precast Strand — ultimate tensile strength cable: approx. Resistance to high tensile rope hanger approx. Composition: 5. In beams were used Due to the large size of the bridge, the wind load which must face is higher than that of any other existing bridge when construction was completed.
The reinforcing elements were prefabricated shaped panel were transported to the construction site where they were erected into the interior of the anchorages and towers with floating cranes. In order to make a proper, new technologies have been investigated for the proper maintenance and long life of the bridge.
This system protects the main cable corrosion The system consists of injecting dry air into the main cables to maintain a constant humidity inside thereof. This is a revolutionary idea because the cost of periodic maintenance is avoided. The towers and suspended structure coated with newly developed fluorine resin paint, which has high durability.
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