When was akashi kaikyo bridge completed

As impressive as the Akashi Kaikyo Bridge is, it is only one of the world's longest suspension bridges. Some of the other longest suspension bridges include, but are not limited to: -. The Akashi Kaikyo Bridge is both one of the longest and tallest bridges in the world. Roughly , kilometers of cabling was used in the bridge's construction. The bridge has been designed to withstand earthquakes and the harsh sea conditions of the area.

Her resilience was tested before she was even completed when her incomplete structure survived the Kobe earthquake. The earthquake measured 6. Since she is built near the so-called "Ring of Fire", the Kobe earthquake is unlikely to be the last time the bridge will need to resist the forces of nature. The bridge is used by around 25, cars everyday ad it has become a tourist attraction. Construction began in the late s, and took ten years, millions of workers and , tonnes of steel and 1.

Her central span was originally designed to be 1, meters long, but this needed to be amended by 1 meter following the Kobe earthquake. Prior to the bridge's construction, the Akashi Strait was one of the most dangerous waterways in the world. Steel cables with a diameter of cm contain 36, lines of wire. The bridge is supported by two cables basically the central section, considered the toughest in the world constructed. The primary tower is made of steel, and the shaft has a cruciform cross section which is insensitive to wind-induced oscillation.

However, tuned mass damper is installed within the shafts to suppress oscillation is anticipated that during erection of the tower, and even at the stage of completing the bridge. A shaft of the tower is divided into 30 levels and almost all levels are composed of 3 blocks. Each block was made in factories and transported to the site and then hoisted by crane climbing tower that had a lifting capacity of tons.

Articulating high tension bolts were used to connect field. A foundation of the main tower weight of , tn weighing bridge from the main towers footbed transmitted.

The footbed, 60 meters under water, was excavated by a dredger bucket. To overcome the difficult conditions of the strait, including deepwater strong currents and waves that caused vibration in the dredger during excavation, high-tech devices are used, such as Remotely Operated Vehicle System.

The circular-shaped drawer has no directional property, and thus makes them more stable and easier to handle in strong currents of the Strait. The construction of the stiffening beam, by the method of flat blocks, begins in the towers and main anchors, where a floating crane was used to install six cell blocks in the towers, and 8 anchors. The 4km of the pathway for vehicles that crosses the Akashi Strait is divided into 6 lanes.

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. It is known as the strongest and longest suspension bridge in the world with a length of 12, feet.

This four miles wide bridge has six lanes. The construction of this bridge started in and took 10 years to complete. Search Search for: Search. Although the central span length of the Bridge is about twice as long as those of previous suspension bridges, the girder of 1,m long had to be erected. Even under such circumstances, the Bridge was constructed by adopting Japanese own techniques and newly developed technologies. Buoy tilted by tide.

Wind tunnel laboratory test with a full model. The great earthquake of Magnitude 7. At that time, Akashi-Kaikyo Bridge was under construction, in other words, both the towers were completed and main cables of the Bridge were being built.

Akashi-Kaikyo Bridge and residential area in Kobe just after the Earthquake.