Tokyo Skytree

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Template:Short description Template:Use dmy dates Template:Infobox building Script error: No such module "Nihongo"., also written as Tokyo Sky Tree, is a broadcasting and observation tower, located in Sumida, Tokyo, Japan. It has been the tallest tower in Japan since opening in 2012,[1] and reached its full height of Template:Convert in early 2011, making it the tallest tower in the world, displacing the Canton Tower,[2][3] and the third tallest structure in the world behind Merdeka 118 (Template:Convert) and Burj Khalifa (829.8 m or 2,722 ft).[4]Template:Efn

The tower is the primary television and radio broadcast site for the Kantō region; the older Tokyo Tower no longer gives complete digital terrestrial television broadcasting coverage because it is surrounded by high-rise buildings. Skytree was completed on Leap Day, 29 February 2012, with the tower opening to the public on 22 May 2012.[5] The tower is the centerpiece of a large commercial development funded by Tobu Railway (which owns the complex) and a group of six terrestrial broadcasters headed by NHK. Trains stop at the adjacent Tokyo Skytree Station and nearby Oshiage Station. The complex is Template:Convert northeast of Tokyo Station. Sumida Aquarium is in the Tokyo Solamachi complex.

Design

The tower's design was published on 24 November 2006,[6] based on the following three concepts:

  • Fusion of neofuturistic[7][8] design and the traditional beauty of Japan
  • Catalyst for revitalization of the city
  • Contribution to disaster prevention – "Safety and Security"

The base of the tower has a structure similar to a tripod; from a height of about Template:Cvt and above, the tower's structure is cylindrical to offer panoramic views of the river and the city.[9] There are observatories at Template:Cvt, with a capacity of up to 2,000 people, and Template:Cvt, with a capacity of 900 people.[10] The upper observatory features a spiral, glass-covered skywalk in which visitors ascend the last 5 metres to the highest point at the upper platform. A section of glass flooring gives visitors a direct downward view of the streets below.[11]

Earthquake resistance

The tower has seismic proofing, including a central shaft made of reinforced concrete. The main internal pillar is attached to the outer tower structure for the first 125 metres above ground. From there until 375 metres the pillar is attached to the tower frame with oil dampers, which act as cushions during an earthquake. Additional resilience is achieved through an "added mass control mechanism" (or tuned mass damper) – a damping system which, in the event of an earthquake, moves out of step with the building's structure, to keep the center of gravity as central as possible to the tower's base.[12] According to the designers, the dampers can absorb 50 percent of the energy from an earthquake.[13][14]

Color

Template:Multiple image

The exterior lattice is painted a color officially called "Skytree White". This is an original color based on a bluish-white traditional Japanese color called Script error: No such module "Nihongo"..[15]

Illumination

The illumination design was published on 16 October 2009. Two illumination patterns alternate daily. One is the sky blue Iki (chic, stylish), and the other is the purple Miyabi (elegance, refinement). The tower is illuminated using LEDs.[16]

Naming and height

File:Tokyo Skytree Silhouette.svg
The cross-section of the tower forms an equilateral triangle on the ground, gradually rounding to become circular at 320 m elevation.

From October to November 2007, suggestions were collected from the general public for the name to be given to the tower. On 19 March 2008, a committee chose six final candidate names: Script error: No such module "Nihongo"., Script error: No such module "Nihongo"., Script error: No such module "Nihongo"., Script error: No such module "Nihongo"., Script error: No such module "Nihongo"., Script error: No such module "Nihongo".. The official name was decided in a nationwide vote, and was announced on 10 June 2008 as "Tokyo Skytree". The name received around 33,000 votes (30%) out of 110,000 cast, with the second most popular name being "Tokyo Edo Tower".[17]

The height of Template:Cvt was selected to be easily remembered. The figures 6 (mu), 3 (sa), 4 (shi) stand for "Musashi", an old name for the region where the Tokyo Skytree stands.[18]

Broadcasting use

Tokyo Skytree is used as a radio/television broadcast and communications tower.

Television broadcasters

Channel Channel name Callsign Signal power ERP Broadcast area
1
Script error: No such module "Check for unknown parameters". 		NHK General TV JOAK-DTV 10 kW 68 kW Kantō region
2
Script error: No such module "Check for unknown parameters". 		NHK Educational TV JOAB-DTV
4
Script error: No such module "Check for unknown parameters". 		Nippon Television JOAX-DTV 10 kW 68 kW Kantō region
5
Script error: No such module "Check for unknown parameters". 		TV Asahi JOEX-DTV
6
Script error: No such module "Check for unknown parameters". 		TBS Television JORX-DTV
7
Script error: No such module "Check for unknown parameters". 		TV Tokyo JOTX-DTV
8
Script error: No such module "Check for unknown parameters". 		Fuji Television JOCX-DTV
9
Script error: No such module "Check for unknown parameters". 		Tokyo MX JOMX-DTV 3 kW 11.5 kW Tokyo

Radio broadcasters

Frequency Station name Callsign Power ERP Broadcast area
81.3 MHz J-Wave Tokyo JOAV-FM 7 kW 57 kW Tokyo
82.5 MHz NHK FM Broadcast Tokyo JOAK-FM
90.5 MHz TBS Radio Tokyo JOKR-FM Kantō region
91.6 MHz Nippon Cultural Broadcasting Sumida  
93.0 MHz Nippon Broadcasting System Sumida  

Template:Tallest towers in the world.svg

File:Tokyo Skytree (1).JPG
Main pod
File:Worm's-eye view of Tokyo Skytree with vertical symmetry impression, a sunny day, in Japan.jpg
Worm's-eye view of Tokyo Skytree, a sunny day
File:Mt.Fuji & Tokyo SkyTree (6906783193)b.jpg
Mount Fuji and the tower, seen from Chiba
File:2012年隅田川花火大会.jpg
Sumidagawa Fireworks Festival
File:Interior of Tokyo Skytree 1.jpg
Tokyo Skytree Observation Deck

Timeline

2008

File:Tokyo Sky Tree under construction (4121825262).jpg
Tokyo Skytree under construction in November 2009
  • 14 July 2008: A ceremony was held at the site to mark the start of construction.[19]

2009

  • 6 April 2009: The foundations for the three main legs were completed.[20]
  • 7 August 2009: The tower reached a height of 100 m.[21]
  • 16 October 2009: The projected height was increased from 610 m to 634 m to make it the highest self-supportingTemplate:Elucidate steel tower. Also, 6-3-4 is Mu-sa-shi in Japanese wordplay goroawase.[22]
  • 10 November 2009: The tower reached a height of 200 m.[23]

2010

2011

2012

  • 16 February 2012: The roofs of warehouses close to the tower were damaged by falling snow and ice from the tower.[37][38]
  • 29 February 2012: Tower construction was finished. Completion was delayed two months from the original schedule because of a shortage of supplies due to the effects of the 2011 Japanese earthquake and tsunami.[39]Script error: No such module "Unsubst".
  • 2 March 2012: A ceremony was held to celebrate the completion with a kannushi priest and 70 people from Tobu Group, construction, broadcasting and other companies.[40][41]
  • 6 March 2012: First Light-up during the Tokyo Hotaru Festival
  • 26 April 2012: Emperor Akihito and Empress Michiko of Japan inspected the Tokyo Skytree Tembo Galleria.[42]
  • 22 May 2012: Public opening
  • 1 October 2012: Channel 9 Tokyo MX start transmission from Tokyo Skytree with continuing transmission from Tokyo Tower in simulcast manner.[43]

2013

  • 16 January 2013: Snow falling from the tower knocked a hole in the roof of a nearby house. No one was reported injured.[44]
  • 13 May 2013: Tokyo MX continued transmission from Tokyo Skytree and stopped transmission from Tokyo Tower with a gradual decrease in power since 12 November 2012.[45]
  • 31 May 2013: On 9:00 a.m., formal transmission of broadcast in channel 1 to 8, except 3, start from Tokyo Skytree after number of test transmission with off for minutes to hours from Tokyo Tower since 22 December 2012.

2022

  • 22 May 2022: the 10th anniversary of the opening of Tokyo Skytree was celebrated with Kabuki by Ichikawa Ebizo XI who performed a signature technique called the "nirami" glare on a special stage atop of the tower.[46]

Opening

As the Skytree's opening approached, people reportedly waited in line for a week to get tickets. By the opening, trips up the tower were fully booked for the first two months of operation.[47] The opening day drew a crowd of tens of thousands, despite rainy conditions which blocked the view from the tower's observation deck. Strong winds also forced two elevators to be shut down, leaving some visitors briefly stranded on the observation deck.[48]

According to Tobu, 1.6 million people visited Skytree in its first week. Local residents reported that the influx of visitors disturbed the peace of their community and had, so far, generated little economic benefit for the local area.[49]

Gallery

Template:Wide image

File:Aerial view of tokyo skytree.jpg
Aerial view of Tokyo Skytree October 2023

See also

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Notes

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References

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Sources

External links

Template:Sister project

Template:S-ach
Preceded byTemplate:S-bef/check World's tallest tower
2011–present Template:S-ttl/check 		Incumbent
Preceded byTemplate:S-bef/check World's tallest free-standing tower
2011–present Template:S-ttl/check

Template:S-end Template:Tobu transit Template:Tokyo Skyscrapers Script error: No such module "Navbox". Template:Authority control

  1. ↑ a b Tokyo Sky Tree beats Tokyo Tower, now tallest building in Japan Template:Webarchive, The Mainichi Daily News, 29 March 2010Template:Dead link
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".
  4. ↑ Script error: No such module "citation/CS1".
  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "citation/CS1".
  7. ↑ Tokyo Sky Tree: the world's tallest broadcasting tower Template:Webarchive. megalopolisnow (8 August 2012). Retrieved on 23 June 2014.
  8. ↑ Japan | ArchDaily – Part 33 Template:Webarchive. ArchDaily. Retrieved on 23 June 2014.
  9. ↑ Script error: No such module "citation/CS1".
  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Kyodo News, "Skytree reaches for hearts and minds Template:Webarchive", Japan Times, 25 May 2012, p. 3
  12. ↑ Script error: No such module "citation/CS1".
  13. ↑ Nakata, Hiroko, "Tokyo Sky Tree opener looms large Template:Webarchive", Japan Times, 21 February 2012, p. 3.
  14. ↑ Bull, Brett, "The sky's the limit Template:Webarchive", Japan Times, 20 May 2012, p. 7
  15. ↑ Script error: No such module "citation/CS1".
  16. ↑ Script error: No such module "citation/CS1".
  17. ↑ Name of New Tower Decided Template:Webarchive Template:In lang
  18. ↑ Kyodo News, "Tower's developers considered several figures before finally settling on 634 Template:Webarchive", Japan Times, 23 May 2012, p. 2
  19. ↑ "Tokyo Sky Tree construction starts" Template:Webarchive. The Japan Times (15 July 2008). Retrieved 15 July 2008.
  20. ↑ Script error: No such module "citation/CS1".
  21. ↑ Script error: No such module "citation/CS1".
  22. ↑ Script error: No such module "citation/CS1".
  23. ↑ [1] Template:Webarchive
  24. ↑ Script error: No such module "citation/CS1".
  25. ↑ Script error: No such module "citation/CS1".
  26. ↑ Tokyo Skytree, already tallest building in Japan, tops 400 meters, Kyodo News, 30 July 2010
  27. ↑ Script error: No such module "citation/CS1".
  28. ↑ Script error: No such module "citation/CS1".
  29. ↑ Script error: No such module "citation/CS1".Template:Dead link
  30. ↑ Script error: No such module "citation/CS1".
  31. ↑ Script error: No such module "citation/CS1".
  32. ↑ Script error: No such module "citation/CS1".
  33. ↑ Script error: No such module "citation/CS1".
  34. ↑ Yomiuri-online movie: Dismantling cranes Template:Webarchive on 23 May 2011 (Japanese)
  35. ↑ Script error: No such module "citation/CS1".
  36. ↑ Script error: No such module "citation/CS1".
  37. ↑ Company warehouses damaged by ice falling from Tokyo Sky Tree 17 February 2012 Template:Webarchive Japan Today Retrieved 5 October 2015
  38. ↑ Koh, Yoree Look Up at Your Peril: Tokyo Skytree's Falling Ice 15 January 2013 Template:Webarchive Wall Street Journal Retrieved 5 October 2015
  39. ↑ Japan finishes Tokyo Sky Tree Template:Webarchive, YAHOO!7 NEWS, AFP 29 February 2012, 4:07 pm
  40. ↑ Tokyo Sky Tree completion ceremony, 2 March 2012 Template:Webarchive, Kyodo News
  41. ↑ Script error: No such module "citation/CS1".
  42. ↑ Script error: No such module "citation/CS1".
  43. ↑ Script error: No such module "citation/CS1".
  44. ↑ Snow from world's tallest tower pierces Tokyo roof 16 January 2013 Template:Webarchive Terra Daily Retrieved 5 October 2015
  45. ↑ Script error: No such module "citation/CS1".
  46. ↑ Script error: No such module "citation/CS1".
  47. ↑ Template:Cite magazine
  48. ↑ Script error: No such module "citation/CS1".
  49. ↑ Aoki, Mizuho, "Skytree a mixed blessing for locals Template:Webarchive", Japan Times, 22 June 2012, p. 3
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