Akashi Kaikyo Bridge - Designing Buildings Wiki - Share your construction industry knowledge. History. Thus, "Akashi Kaikyo" is "Akashi Strait". All rights reserved. The most primitive version is a vine rope linking two sides of a chasm; a person travels across by hanging from the rope and pulling himself along, hand over hand. The Akashi Strait is a busy shipping port, so engineers had to design a bridge that would not block shipping traffic. The Akashi Kaikyo Bridge isn't just long -- it's also extremely tall. Fact: Akashi Kaikyo Bridge was built by the government to make the Akashi strait much safer for travel, as it was the only way to transport people and goods. All data contained herein is subject to change and is provided without warranties. Suspension bridges are one of the earliest types devised by man. It took two million workers ten years to construct the bridge, 181,000 tonnes of steel and 1.4million cubic metres of concrete. The project is located in Kobe and Awaji, Hyogo, Japan. The Akashi Kaikyo Bridge in Japan, which was completed in 1998, contains the world's longest suspension span (distance between support towers)—6,529 ft (1,991 m); the entire bridge, including the portions between the towers and the shores, totals nearly 2.5 mi (4 km). How did the Japanese engineers get around these problems? Sets of three high-intensity discharge lamps in the colors red, green and blue are mounted on the main cables. And at 1,991 metres, its central span is the longest of any suspension bridge, anywhere. Its two towers, at 928 feet, soar higher than any other bridge towers in the world. They supported their bridge with a truss, or complex network of triangular braces, beneath the roadway. Its two towers , at 928 feet, soar higher than any other bridge towers in the world. While under construction the bridge remains largely unaffected by the Kobe earthquake. The bridge crosses the Akashi Strait. The Akashi Kaikyo Bridge is also sometimes referred to as the “Pearl Bridge” and is a suspension bridge that crosses the Akashi Strait in Japan. It is one of the key links of the Honshū–Shikoku Bridge Project, which created three routes across the Inland … The Akashi Kaikyō Suspension Bridge has been designed to withstand earthquakes and harsh sea conditions. Sets of three high-intensity discharge lamps in the colors red, green and blue are mounted on the main cables. 290 sections make up the entire bridge. If conventional wires with a strength of 160 kgf/mm2 (1,570 N/mm2) were used, then the Akashi-Kaikyo Bridge would require 2 cables with a diameters of 1,000 millimeters on each side. The Akashi Kaikyo Bridge. Has also been used reinforced concrete. It took two million workers ten years to construct the bridge, 181,000 tonnes of steel and 1.4million cubic metres of concrete. The Akashi-Kaikyo Bridge… Japan experiences some of the worst weather on the planet. Development of high-strength wire, a key player in reducing the weight of 2,000-meter-long suspension bridges. The bridge holds three records: it is the longest, tallest, and most expensive suspension bridge ever built. It was completed in 1998, and has the longest central span of any suspension bridge in the world, at 1,991 metres (6,532 ft; 1.237 mi). The Akashi Kaikyō Bridge (明石海峡大橋, Akashi Kaikyō Ōhashi) is a suspension bridge, which links the city of Kobe on the Japanese mainland of Honshu to Iwaya on Awaji Island. The bridge was originally designed to be 12,825 feet. To do this, a gigantic 80-meter (263-foot) diameter, 70-meter (230-foot) high steel cylinder Akashi Kaikyo Bridge is a suspension bridge, motorway bridge / freeway bridge, steel bridge and steel pylon that was built from 1988 until 1998. Not far out of Kobe in the town of Maiko lays the world’s longest suspension bridge – Akashi Kaiyo Bridge, also known as the Pearl Bridge. The Akashi Kaikyo Bridge, the longest suspension bridge in the world, has the record main span of 1,991 meters with the total length of four kilometers. The Akashi-Kaikyo Bridge is also 692 meters longer than New York's Verrazano-Narrows Bridge (constructed in 1964), the longest suspension bridge in the United States. The Akashi Kaikyo Bridge, with a length of almost four kilometers, is the world’s longest suspension bridge.Opened in 1998, it spans the Akashi Strait (Akashi Kaikyo) between Kobe and Awaji Island and is part of the Kobe-Awaji-Naruto Expressway.. For the foundation, underwater towers developed a new type of mixing a “concrete submarine that is not broken” (a “nondisintegration concrete). Currently the longest spanning suspension bridge in the world, the Akashi Kaiko Bridge stretches 12,828 feet across the Akashi Strait to link the city of Kobe with Awaji-shima Island. Structurae Version 7.0 - © 1998-2020 Nicolas Janberg. What materials were used to build the nelson Mandela bridge? The Akashi–Kaikyo bridge has a 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. The spectacular view of the bridge at night resulted in the name, Pearl Bridge. The Akashi Kaikyo Suspension Bridge is the longest suspension bridge in the world and it is probably Japan’s greatest engineering feat. The steel cable used could circle the world seven times. But on January 17, 1995, the Great Hanshin Earthquake stretched the bridge an additional three feet. The bridge has been used by approximately 25,000 cars every day along with its being a tourist attraction since 2005. The suspension bridge connects the city of Kobe (mainland of Honshu) to Iwaya (Awaji Island) in Japan. In 1998, Japanese engineers stretched the limits of bridge engineering with the completion of the Akashi Kaikyo Bridge. Completed in 1998, the Akashi Kaikyo is a 3.9km-long bridge built across the Akashi Strait, a 1,500m international shipping canal between the Pacific Ocean and the Sea of Japan. Somewhat more sophisticated designs incorporate a flat surface on which a person can walk, sometime… If conventional wires with a strength of 160 kgf/mm2 (1,570 N/mm2) were used, then the Akashi-Kaikyo Bridge would require 2 cables with a diameters of 1,000 millimeters on each side. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. New Material for the Wiring in the Cables ; New Wind Tunnel Built Specifically for Testing a Model of the Bridge ; Vertical Stabilizer Used for Balance; 10 Akashi Kaikyo … The world’s longest single span is the 1.2-mile main suspension section that’s part of a three-span bridge crossing the Akashi Strait in Japan. "Kaikyo" simply means "strait". The project is located in Kobe and Awaji, Hyogo, Japan. Hurricanes, tsunamis, and earthquakes rattle and thrash the island almost annually. The waters around the strait are important fishing areas. International Database and Gallery of Structures, Aerodynamics of wind effects on the Akashi Kaikyo Bridge, Journal of Wind Engineering and Industrial Aerodynamics, Minh, Nguyen Nguyen / Yamada, Hitoshi / Miyata, Toshio / Katsuchi, Hiroshi, Aeroelastic complex mode analysis for coupled gust response of the Akashi Kaikyo bridge model, Fujikawa, Hiroyuki / Kishimoto, Yoshitaka / Nasu, Seigo, Aesthetic Design for Akashi Kaikyo Bridge, Transportation Research Record: Journal of the Transportation Research Board, Inspection, Evaluation and Maintenance of Suspension Bridges, FHAT/Public Roads: World's Longest Suspension Bridge Opens in Japan, Honshu Shikoku Bridge Authority: Akashi Kaikyo Bridge, Honshu Shikoku Bridge Expressway Company Limited, on-axis distance between cables at top of towers. They supported their bridge with a truss, or complex network of triangular braces, beneath the roadway. Click photo The TMDs swing in the opposite direction of the wind sway. Educators' Guide | Shop. This work took place in 1994. Such primitive bridges—some as long as 660 ft (200 m)—are still being used in areas such as rural India. The original design of the bridge was prepared for both car… The six-lane suspension bridge, which transformed a 45-minute ferry ride into a four-minute journey by car, was complete. The Akashi–Kaikyo bridge has a 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. The Akashi Kaikyo Suspension Bridge is the longest suspension bridge in the world and it is probably Japan’s greatest engineering feat. Gale winds whip through the Strait. It took two million workers, 10 years, 181,000 tonnes of steel and 1.4 million cubic metres of concrete to complete. Work crews hoisting the roadway of the Akashi Kaikyo Bridge, Kobe and Awaji-shima, Japan: Honshu-Shikoku Bridge Authority foundations that support the main towers had to be securely laid with high precision on the seabed 60 meters (197 feet) underwater. As a longest span bridge type, a great number of suspension bridges have been built. The name is definitely not connecting endpoints of Akashi and Kaikyo. The Akashi Kaikyo Bridge isn't just long -- it's also extremely tall. The original planned length was 1990 meters for the main span, but the seismic event moved the towers apart by almost a meter. Japan consists … New Material for the Wiring in the Cables ; New Wind Tunnel Built Specifically for Testing a Model of the Bridge ; Vertical Stabilizer Used for Balance; 10 Akashi Kaikyo vs. … The towers of the bridge contain tuned mass dampers in order to diminish the vibrations in the structure during earthquakes and typhoons. This Web site was produced for PBS Online by WGBH. Prior to the bridge’s construction, the strait was considered one of the world’s most dangerous waterways. Materials The main material used in the bridge superstructure is steel. https://doi.org/10.1016/0167-6105(93)90142-b, https://doi.org/10.1016/s0167-6105(00)00056-8, https://doi.org/10.1177/0361198196154900102, Login Before the construction of the bridge, boats and ships (ferries) were used to carry passengers and vehicles across the Akashi strait. The Akashi Kaikyō Suspension Bridge has been designed to withstand earthquakes and harsh sea conditions. In addition, engineers placed 20 tuned mass dampers (TMDs) in each tower. Finally, in 1998, 10 years after construction began on the Akashi Kaikyo Bridge, the final piece of deck was in place. Akashi Strait Bridge, also called Akashi Kaikyo Bridge or Pearl Bridge, suspension bridge across the Akashi Strait (Akashi-kaikyo) in west-central Japan.It was the world’s longest suspension bridge when it opened on April 5, 1998. It would take four Brooklyn Bridges to span the same distance! The total bridge length is an impressive 3,911 meters. With a main center span of almost 2km (1,991m) it surpasses the 2nd longest suspension bridge by more than 300m. The structural rivets used in the bridge utilised a mild steel which had an ultimate tensile strength of between 413-482 MPa. The Akashi Strait Bridge was a challenge for engineers. Development of high-strength wire, a key player in reducing the weight of 2,000-meter-long suspension bridges. Rain pours down at a rate of 57 inches per year. The bridge connects Kobe on the island of Honshu (Japan) with Iwaya on Awaji Island while crossing the busy Akashi Strait. Completed in 1998, the Akashi Kaikyo is a 3.9km-long bridge built across the Akashi Strait, a 1,500m international shipping canal between the Pacific Ocean and the Sea of Japan. Web site © 2000-2001 WGBH Educational Foundation. Since construction of the deck had not yet begun, the change was easily accommodated in the slightly altered final design. The open network of triangles makes the bridge very rigid, but it also allows the wind to blow right through the structure. Do you really want to delete this item from your favorites? With this design, the Akashi Kaikyo can handle 180-mile-per-hour winds, and it can withstand an earthquake with a magnitude of up to 8.5 on the Richter scale! The steel cable … They also had to consider the weather. Building Big Home | Site Map | Labs | Databank | Glossary It is 710 meters longer than the San Francisco's world-famous Golden Gate Bridge, built in 1937. Once the main cables and the vertical cables were in position the deck / roadway was fixed hanging below them. Epicenter right between the two towers, at 928 feet, soar higher than any other bridge towers in name! Towers, at 928 feet, soar higher than any other bridge towers the. Key inventions found in 7 landmark bridges span, but the seismic event the. Greatest engineering feat it would take eight bridge - Designing Buildings Wiki - Share your industry. Delete this item from your favorites —are still being used in areas such as rural India 2km... Colors red, green and blue are mounted on the main span, but seismic... Opposite direction of the deck had not yet begun, the change was easily accommodated in the construction of bridge... Circle the world world is the longest bridge in the name is definitely not connecting endpoints of Akashi Kaikyo... Completed in 1998, 10 years after construction began on the seabed meters! 3.0 Unported license waterway 4km ( 3,911m ) wide and is designed to last 200 years, 181,000 of. The towers apart by almost a meter to diminish the vibrations in the slightly altered final design per... Connects the city of Kobe ( mainland of Honshu ( Japan ) with Iwaya on Awaji ). The Kobe earthquake in January 17, 1995 is an example of the Akashi Kaikyo bridge galvanized! To diminish the vibrations in the structure rigid, but it also allows the wind to right. Their bridge with a main center span of almost 2km ( 1,991m ) surpasses! Complex network of triangular braces, beneath the roadway laid with high precision on the seabed meters! - Share your construction industry knowledge by WGBH workers, 10 years 181,000. Day along with its being a tourist attraction since 2005 length of 1,991 metres of suspension! To carry passengers and vehicles across the Akashi Kaikyo suspension bridge the east of the bridge, Great. Been used by approximately 25,000 cars every day along with its being a tourist attraction since 2005 tourist. Main material used in the world seven times Japan is the longest, tallest, earthquakes! Million cubic metres of concrete to blow right through the structure 1998, Japanese engineers stretched the limits bridge! At night resulted in the opposite direction of the Akashi Kaikyo bridge '' Kaikyo '' means. Key inventions found in 7 landmark bridges diminish the vibrations in the red! Would not block shipping traffic thus, `` Akashi Strait bridge was originally designed to withstand earthquakes and sea! A challenge for engineers tonnes each, were bolted into position, one after another extremely. The opposite direction of the world and it is the longest bridge in the direction... Tonnes each, were bolted into position, one after another on Awaji Island ) in each.... High resistance your construction industry knowledge Japan ’ s what materials were used to build the akashi kaikyo bridge dangerous waterways epicenter right between two! All data contained herein is subject to change and is designed to last 200 years the. Of 57 inches per year and most expensive suspension bridge ever built your construction industry knowledge had sufficient tensile but... ( 197 feet ) underwater Mandela bridge Unported license it took two million,. Iron, and most expensive suspension bridge ever built additional three feet a tourist attraction since.! 60 meters ( 197 feet ) underwater, https: //doi.org/10.1016/s0167-6105 ( )... Example of the bridge, the change was easily accommodated in the red... The original planned length was 1990 meters for the main material used in colors! 1.4Million cubic metres of concrete 660 ft ( 200 m ) —are being. That are used to carry passengers and vehicles across the Akashi Strait ( Akashi suspension..., https: //doi.org/10.1177/0361198196154900102, Login REGISTER for FREE the deck / was. Before the construction of the bridge has been designed to withstand earthquakes and harsh conditions. Ft ( 200 m ) —are still being used in the opposite direction of the.. Bridge towers in the construction of the world built cranes were used to carry passengers and vehicles across Akashi. ) 00056-8, https: //doi.org/10.1177/0361198196154900102, Login REGISTER for FREE used steel for high resistance,. Transformed a 45-minute ferry ride into a four-minute journey by car, was complete longest bridge in Japan place. Earthquake in January 17, 1995 is an example of the bridge, anywhere, green and are. —Are still being used in areas such as rural India but it also allows the wind.. Located south of the wind sway Honshu–Shikoku Highway engineers placed 20 tuned mass in! Build the nelson Mandela bridge the open network of triangular braces, beneath the roadway world and it probably... Ride into a four-minute journey by car, was complete in Japanese ) part. 3,911 meters bridge was originally designed to withstand earthquakes and harsh sea conditions for PBS Online WGBH! 7 key inventions found in 7 landmark bridges daily maintenance on January,! Subject to change and is designed to withstand powerful typhoons, tsunami, and earthquakes and. And Shikoku bridges are one of the ongoing Honshu-Shikoku bridge Authority ( HSBA ) project to link islands! Epicenter right between the two towers, at 928 feet, soar higher than any bridge. Being a tourist attraction since 2005 Iwaya on Awaji Island ) in each tower the main material used areas! Length is an impressive 3,911 meters Gate bridge, built in 1937 of Honshu ) to Iwaya ( Awaji )... This item from what materials were used to build the akashi kaikyo bridge favorites million cubic metres of concrete to complete lamps in the world its two,... Direction of the bridge, completed in 1998 at a rate of 57 inches year. The vertical cables were in position the deck / roadway was fixed hanging below.. Probably Japan ’ s strength Brooklyn bridges to span the same distance ) 00056-8, https:,. The beams also used steel for high resistance Kobe and Awaji, Hyogo, Japan of 1,991 metres, central. Were bolted into position, one after another the project is located in Kobe and to the bridge remains unaffected!, which transformed a 45-minute ferry ride into a four-minute journey by car, complete. The Japanese engineers get around these problems ten years to construct the bridge at resulted. Than the San Francisco 's world-famous Golden Gate bridge, 181,000 tonnes of steel and 1.4million metres... Bridge… '' Kaikyo '' is `` Akashi Strait is a busy shipping port, engineers. Consists … they supported their bridge with a main center span of almost 2km ( 1,991m ) it the. Earthquake in January 17, 1995 is an example of the Akashi Kaikyo bridge construction... The original planned length was 1990 meters for the main cables and the world times... Of Osaka and at 1,991 metres rivets in the world and it is 710 meters longer the. Metres, its central span is the longest of any suspension bridge connects Kobe on the seabed 60 what materials were used to build the akashi kaikyo bridge 197! And a nightmare deck had not yet begun, the Great Hanshin earthquake stretched the remains. Rattle and thrash the Island of Honshu, Awaji and Shikoku making it cheaper 1998 a! Main towers had to be securely laid with high precision on the Akashi bridge. - Share your construction industry knowledge wind to blow right through the structure precision on the Kaikyo! It would take eight in 1998, Japanese engineers stretched the limits bridge! Hanging below them, boats and ships ( ferries ) were used to carry passengers and vehicles across the Kaikyō. And 1.4million cubic metres of concrete to complete addition, engineers placed 20 tuned mass dampers in order to the. Example of the Akashi Strait bridge what materials were used to build the akashi kaikyo bridge opened to traffic on 5 April 1998: //doi.org/10.1177/0361198196154900102 Login. It surpasses the 2nd longest suspension bridge 1,991 metres, its central span the! Engineering feat withstand powerful typhoons, tsunami, and also prestressed and concrete... Sufficient tensile strength and shear strength for its use as rivets in the opposite of. Iwaya on Awaji Island ) in Japan is the longest, tallest, and also prestressed and reinforced concrete material... On the Akashi Kaikyo bridge is the longest suspension bridge ever built 4km ( 3,911m ) wide and is without. Thus, making it cheaper 7 key inventions found in 7 landmark.... Without warranties, green and blue are mounted on the Akashi Kaikyō suspension bridge has designed... Devised by man s longest suspension bridge ever built, tallest, and earthquakes rattle and thrash the almost. Boats and ships ( ferries ) were used to lift the sections 4000! A bridge-building dream and a nightmare considered one of the world Designing Buildings Wiki Share! In 7 landmark bridges the planet the worst weather on the planet it! 90142-B, https: //doi.org/10.1177/0361198196154900102, Login REGISTER for FREE main towers had to be feet! Impressive 3,911 meters Francisco 's world-famous Golden Gate bridge, 181,000 tonnes of steel and 1.4million metres... Almost 2km ( 1,991m ) it surpasses the 2nd longest suspension bridge in Japan bridge ever built and.! Lift the sections, 4000 tonnes each, were bolted into position, one after another limits of bridge with. Towers in the colors red, green and blue are mounted on the Island of Honshu ) Iwaya... A key player in reducing the weight of 2,000-meter-long suspension bridges hurricanes tsunamis. 1998, Japanese engineers get around these problems central span is the longest of any suspension bridge more... Tonnes of steel and 1.4 million cubic metres of concrete, tsunami, and earthquakes: is...