Langbahn Team – Weltmeisterschaft

Shanghai Tower

Not to be confused with Shanghai World Financial Center or Shanghai Tower (Liverpool).

31°14′7.8″N 121°30′3.6″E / 31.235500°N 121.501000°E / 31.235500; 121.501000

Shanghai Tower
上海中心大厦
Shànghǎi Zhōngxīn Dàshà
Shanghai Tower in 2016
Map
Former namesShanghai Center
General information
StatusCompleted
TypeMixed-use
Location501 Yincheng Middle Rd, Lujiazui, Pudong, Shanghai
CountryChina
Construction started1 November 2008
Completed31 August 2014; 10 years ago (2014)
Opened1 February 2015
CostCN¥15.9 billion
OwnerShanghai Tower Construction and Development
Height
Architectural632 m (2,073 ft)
Tip632 m (2,073 ft)
Top floor587.4 m (1,927 ft) (Level 127)[1]
Observatory562 m (1,844 ft) (Level 121)[9]
Technical details
Floor count128 above ground
5 below ground
Floor area380,000 m2 (4,090,300 sq ft) above grade
170 m2 (1,800 sq ft) below grade
Lifts/elevators97 (mall included)
Design and construction
Architect(s)Marshall Strabala & Jun Xia (Gensler)
TJAD
EngineerThornton Tomasetti
Cosentini Associates
I.DEA Ecological Solutions
Main contractorShanghai Construction Group
References
[2][3][4][5][6][7][8]

Shanghai Tower [a] is a 128-story, 632-meter-tall (2,073 ft) megatall skyscraper located in Lujiazui, Pudong, Shanghai.[10] It is the tallest building in China and the world's third-tallest building by height to architectural top. It is the tallest and largest LEED Platinum certified building in the world since 2015. It had the world's fastest elevators at a top speed of 20.5 meters per second (74 km/h; 46 mph) until 2017,[11][12] when it was surpassed by the Guangzhou CTF Finance Center, with its top speed of 21 meters per second (76 km/h; 47 mph).[13] Designed by the international design firm Gensler and owned by the Shanghai Municipal Government,[2] it is the tallest of the world's first triple-adjacent supertall buildings in Pudong, the other two being the Jin Mao Tower and the Shanghai World Financial Center. Its tiered construction, designed for high energy efficiency, provides nine separate zones divided between office, retail and leisure use.[5][7][14] The US-based Council on Tall Buildings and Urban Habitat cites it as "one of the most sustainably advanced tall buildings in the world."[15]

Groundbreaking and construction work on the tower began on 29 November 2008 and topped out on 4 August 2013.[10][16] The exterior was completed in summer 2015,[8][14] and work was considered complete in September 2014. Although the building was originally scheduled to open to the public in November 2014, the actual public-use date was shifted to February 2015. The observation deck was opened to visitors in July 2016; the period from July through September 2018 was termed a "test run" or "commissioning" period.[17][18] Since 26 April 2017, the sightseeing decks on the 118th and 119th floors (546m and 547m high respectively) has been fully open to the public.[19] By 2020, the opening of a further deck, dubbed the "Top of Shanghai" on the 121st floor at 562m (1844 ft), made it the highest observation deck in the world, beating out the Burj Khalifa's observation deck at 555m (1823 ft).[20] The J Hotel Shanghai Tower, opened on the 120th floor in 2021, became the world's highest luxury hotel.[21][22]

History

Planning and funding

Planning models for the Lujiazui financial district dating back to 1993 show plans for a close group of three supertall skyscrapers.[23] The first of these, the Jin Mao Tower, was completed in 1999; the adjacent Shanghai World Financial Center (SWFC) opened in 2008.[24]

The Shanghai Tower is owned by Yeti Construction and Development, a consortium of state-owned development companies which includes Shanghai Chengtou Corp., Shanghai Lujiazui Finance & Trade Zone Development Co., and Shanghai Construction Group.[2][6] Funding for the tower's construction was obtained from shareholders, bank loans, and Shanghai's municipal government.[25] The tower had an estimated construction cost of US$2.4 billion.[7]

Construction

In 2008, the site – previously a driving range[26] – was prepared for construction.[27][28] A groundbreaking ceremony was held on 29 November 2008, after the tower had passed an environmental impact study.[29] The main construction contractor for the project was Shanghai Construction Group, a member of the consortium that owns the tower.[6]

A repetitive slip-forming process was used to construct the tower's core floor by floor.[30] By late April 2011, the tower's steel reinforcement had risen to the 18th floor, while its concrete core had reached the 15th floor, and floor framing had been completed up to the fourth floor.[30] By late December 2011, the tower's foundations had been completed, and its steel construction had risen above the 30th floor.[31] In the first months of 2012, cracks began appearing in the roads near the tower's construction site. These were blamed on ground subsidence, which was likely caused by excessive groundwater extraction in the Shanghai area, rather than by the weight of the Shanghai Tower.[32]

By May 2012, the tower's core stood 250 meters (820 ft) high, while floors had been framed to a height of 200 meters (660 ft).[33] By early September 2012, the core had reached a height of 338 meters (1,109 ft).[34] By the end of 2012, the tower had reached the 90th floor, standing approximately 425 meters (1,394 ft) tall.[35] By 11 April 2013, the tower had reached 108 stories, standing over 500 meters (1,600 ft) tall and thusly exceeding the heights of its two adjacent supertall skyscrapers, the Jin Mao Tower and the Shanghai World Financial Center.[36]

Construction crews laid the final structural beam of the tower on 3 August 2013, thus topping out the tower as China's tallest, and the world's second-tallest, building.[37][38] A topping-out ceremony was held at the site of the last beam.[37][39] During the ceremony, Gensler co-founder Art Gensler stated:

The Shanghai Tower represents a new way of defining and creating cities. By incorporating best practices in sustainability and high-performance design, by weaving the building into the urban fabric of Shanghai and drawing community life into the building, Shanghai Tower redefines the role of tall buildings in contemporary cities and raises the bar for the next generation of super-highrises.[40]

View from Shanghai Tower Observation Deck

The principal architect of the project, Jun Xia, said: "With the topping out of Shanghai Tower, the Lujiazui trio will serve as a stunning representation of our past, our present, and China’s boundless future."[40] Gu Jianping, general manager of the Shanghai Tower Construction Company, expressed the firm's wish "to provide higher quality office and shopping space, as well as contribute to the completeness of the city skyline's and the entire region's functionality".[38]

In January 2014, the tower's crown structure passed the 600-meter (2,000 ft) mark when its construction entered its final phase.[41] The tower's crown structure was completed in August 2014, and its façade was completed shortly after.[42] The tower's interior construction and electrical fitting-out were completed in late 2014.[14][43][42] The opening was gradually introduced during the summer of 2015.[17]

2017 and later

Until June 2017, the tower faced problems attracting tenants due to the absence of all the necessary permits from the local fire department, and consequent impossibility of obtaining the official occupancy permit.[44]

Following a report in June 2017, approximately 60% of its office space has been leased, but only 33% of those tenants have moved in, leaving entire floors of the tower empty; the luxury J hotel has also yet to open. The tower's floor plate has an "efficiency rate of only 50 per cent on some floors, compared with 70 per cent for a typical [skyscraper]", as the tower's "much-talked-about outer skin, which is ideal for allowing in natural light and cuts down on air-conditioning costs... means much of the floor space can’t be used."[45]

In July 2020, major water leaks broke out from the 9th to 60th floors of the tower, which damaged a number of office equipment and electronics. The tower management said that following emergency repairs, a comprehensive inspection would be taken on the floor where the leak originated, later reporting that the leaks had been caused by equipment failure.[46] According to Shanghai Observer, misinformation videos had circulated online alleging that the tower's ceiling was collapsed using footage from a shopping center in Nanning in a 2016 incident.[47]

On 19 June 2021, the J Hotel Shanghai Tower, a luxury hotel owned and operated by Jin Jiang International, a major Chinese hotel and tourism company, opened for business. Occupying the topmost 120th floor of the tower with 165 rooms, it became the "highest hotel in the world" according to CNN.[48][49]

In December 2022, it was reported that, following its initial pre-pandemic tenancy issues, the tower had reached office space occupancy rates of 80% and commercial space occupancy rates of 98%. The tower management disclosed that 41% of its leased space were to foreign company tenants, which included JPMorgan, CNG Paribas and Allianz, and 30% were to Fortune 500 companies.[50] Current tenants of the tower also include Alibaba, Intesa Sanpaolo and AllBright Law Offices.[51]

Design

Shanghai Tower in 2021

The Shanghai Tower was designed by the American architectural firm Gensler, with Shanghainese architect Jun Xia leading the design team.[52][53]

The tower takes the form of nine cylindrical buildings stacked atop each other that total 128 floors, all enclosed by the inner layer of the glass facade.[5] Between that and the outer layer, which twists as it rises, nine indoor zones provide public space for visitors.[5][54] Each of these nine areas has its own atrium, featuring gardens, cafés, restaurants and retail space, and providing panoramic views of the city.[55]

Both layers of the façade are transparent, and retail and event spaces are provided at the tower's base.[5] The transparent façade is a unique design feature, because most buildings have only a single façade using highly reflective glass to reduce heat absorption, but the Shanghai Tower's double layer of glass eliminates the need for either layer to be opaqued.[56] The tower can accommodate as many as 16,000 people daily.[57]

The Shanghai Tower joins the Jin Mao Tower and SWFC to form the world's first adjacent grouping of three supertall buildings. Its 258-room hotel, the J Hotel Shanghai Tower, located between the 84th and 110th floors, is operated by Jin Jiang International Hotels, and is the highest hotel in the world.[3][58] The tower will also incorporate a museum.[43] The tower's sub-levels provide parking spaces for 1,800 vehicles.[3]

Vertical transportation system

The vertical transportation system of Shanghai Tower was designed by an American consultant, Edgett Williams Consulting Group, with principal Steve Edgett as a primary consultant. Working closely with Gensler's design and technical teams to create a highly efficient core, Edgett created an elevator system in which office floors are served via 4 sky lobbies each served by double-deck shuttle elevators. Access to the hotel is through a 5th sky lobby at levels 101/102. Each 2-level sky lobby serves as a community center for that zone of the building, with such amenities as food and beverage and conference rooms. Local zones are served by single-deck elevators throughout the tower, and the observation deck at the top of the tower is served by three ultra-high-speed shuttle elevators that travel at 18 meters per second (40 mph), the highest speed yet employed for commercial building use. These three shuttle elevators are supplemented by three fireman's elevators which will significantly increase the visitor throughput to the observation deck at peak usage periods. In the event of a fire or other emergency, the building's shuttle elevators are designed to evacuate occupants from specially-designed refuge floors located at regular intervals throughout the height of the tower.

Shanghai Tower tuned mass damper, known as the Shanghai Eye, located on floor 126. During the day, it is lit by a skylight on the building's roof.

In September 2011, Mitsubishi Electric announced that it had won a bid to construct the Shanghai Tower's elevator system. Mitsubishi supplied all of the tower's 149 elevators,[59] including three high-speed models capable of traveling 1,080 meters (3,540 ft) per minute (64.8 kilometers (40.3 mi) per hour).[60] When they were installed (2014), they were the world's fastest single-deck elevators (18 meters per second (40 mph)) and double-deck elevators (10 meters per second (22 mph)), respectively.[61] A 10 May 2016 Mitsubishi press release stated that one of the three installed shuttle elevators traveled at 1230 meters/minute – the equivalent of 73.8 kilometers per hour (46 mph), the highest speed ever attained by a passenger elevator installed in a functioning building.[62] The building also broke the record for the world's furthest-traveling single elevator, at 578.5 meters (1,898 ft), surpassing the record held by the Burj Khalifa.[63] The Shanghai Tower's tuned mass damper, designed to limit swaying at the top of the structure, was the world's largest at the time of its installation.[64]

Sustainability

The Shanghai Tower comprises numerous green architecture components; its owners received certifications from the China Green Building Committee and the U.S. Green Building Council for the building's sustainable design.[5][65] In 2013, a Gensler spokesman recounted the tower as "the greenest super high-rise building on Earth at this point in time".[7] The building is designed to catch rainwater for internal use, and to reuse a portion of its wastewater.[17]

View from Shanghai Tower Observation Deck showing The Bund, Huangpu River, and The Oriental Pearl Tower

The design of the tower's glass façade, which completes a 120° twist as it rises, is intended to reduce wind loads on the building by 24%.[7] This reduced the amount of construction materials needed; the Shanghai Tower used 25% less structural steel than a conventional design of a similar height.[56] As a result, the building's constructors saved an estimated US$58 million in material costs.[33] Construction practices were also sustainable. Though the majority of the tower's energy will be provided by conventional power systems, 270 vertical-axis wind turbines located in the facade and near the top of the tower are capable of generating up to 350,000 kWh of supplementary electricity per year,[66][57] and are expected to provide 10% of the building's electrical needs.[17] The double-layered insulating glass façade was designed to reduce the need for indoor air conditioning, and is composed of an advanced reinforced glass with a high tolerance for temperature variations.[67] In addition, the building's heating and cooling systems use geothermal energy sources.[68] Furthermore, rain and waste water are recycled to flush toilets and irrigate the tower's green spaces.[66]

Floor plans

View north from 118F observation deck
A 3-D model of the Shanghai Tower
Breakdown of floor use in the Shanghai Tower[b]
Floor Purpose
128th floor Mechanical layer 9
125th–127th floor Concert hall[69]
Exhibition Hall
Tuned mass damper display[70]
122nd–124th floor Mechanical layer 8
121st floor "Top of Shanghai" observation deck
120th floor J Hotel Shanghai Tower

Heavenly Jin Restaurant

118th & 119th floor Observation deck
116th & 117th floor Mechanical layer 7
111th–115th floor Boutique floors
110th floor VIP Business Center
105th floor J Hotel Soirée Ballroom
104th floor Kinnjyou Inaka Japanese Restaurant
103rd floor Jin Yan Chinese Restaurant
102nd floor Office Zone
101st floor J Hotel Skylobby / Lobby Lounge, Centouno Italian Restaurant
99th & 100th floor Mechanical layer 6
86th–98th floor J Standard Hotel Rooms, Deluxe Rooms, Presidential Suite
85th floor Spa, Fitness Center
84th floor Swimming pool, Yi Lounge
82nd & 83rd floor Mechanical layer 5
70th–81st floor Office Zone 5
68th & 69th floor Sky lobby
66th & 67th floor Mechanical layer 4
54th–65th floor Office Zone 4
52nd & 53rd floor Sky lobby
50th & 51st floor Mechanical layer 3
39th–49th floor Office Zone 3
37th & 38th floor Sky lobby
35th & 36th floor Mechanical layer 2
24th–34th floor Office Zone 2
22nd & 23rd floor Sky lobby
20th & 21st floor Mechanical layer 1
8th–19th floor Office Zone 1
6th & 7th floor Mechanical layer
5th floor Conference Center
3rd & 4th floor Shops and restaurants
2nd floor Shanghai Center Grand Ballroom, Boutique Office Lobby, shops and restaurants
1st floor Office lobby, hotel lobbies, shops and restaurants
B1 Sightseeing Floor entrance, shops and restaurants
B2 Subway station entrance, shops and restaurants
B3–B5 Parking, cargo handling areas, hotels logistics, mechanical layer

See also

References

Notes

  1. ^ Chinese: 上海中心大厦; pinyin: Shànghǎi Zhōngxīn Dàshà; Shanghainese: Zånhe Tsonsin Dusa; lit. 'Shanghai Center Building'
  2. ^ Floors G and 0 are skipped.

Citations

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  3. ^ a b c "Shanghai Tower – The Skyscraper Centre". Council on Tall Buildings and Urban Habitat. 2015. Retrieved 7 September 2014.
  4. ^ "Shanghai defies slump with tallest building plan". Reuters. 27 November 2008. Retrieved 28 November 2008.
  5. ^ a b c d e f "Shanghai Tower News Release" (PDF). Gensler. 28 November 2008. Retrieved 28 November 2008.
  6. ^ a b c "China's Tallest Skyscraper Marks Big Step Toward Its 2015 Finish". Forbes. 3 August 2013. Retrieved 4 February 2015.
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  8. ^ a b "Shanghai Tower nears completion". Los Angeles Times. 12 June 2015. Retrieved 15 July 2015.
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  14. ^ a b c "Tall towers: Signs in the sky". The Economist. 15 January 2014. Retrieved 9 February 2014.
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  19. ^ Shanghai Tower offers airy city views, The Jakarta Post, 28 April 2017
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  21. ^ "Luxury in the clouds: Shanghai opens world's highest hotel". The Star. Retrieved 24 April 2024.
  22. ^ Gilbert, Asha C. "China opens the world's highest hotel with floors two times higher than the Eiffel Tower". USA TODAY. Retrieved 24 April 2024.
  23. ^ 上海浦东拟建世界第一高楼 外形酷似方尖碑 (in Chinese). People.com.cn. 26 October 2007. Archived from the original on 29 October 2007. Retrieved 17 May 2008.
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  51. ^ "中国第一高楼"引发美国人关注，却是因为.... 每日经济新闻.
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  58. ^ "Shanghai Tower J Hotel on course to set the world record". 4Hoteliers.com. 20 December 2010. Retrieved 15 January 2012.
  59. ^ Shanghai Tower Travel China Guide
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  70. ^ "Shanghai Tower, China's tallest skyscraper, soars into the record books". South China Morning Post.
Records
Preceded by Tallest building in China
2013–present
632 meters (2,073 ft) 		Incumbent
Preceded by Tallest building in Shanghai
2013–present
632 meters (2,073 ft)
Preceded by
Taipei 101
17 m/s (55.77 ft/s) (61 km/h, 38 mi/h)
 World’s fastest elevator
21 m/s (68.90 ft/s) (74 km/h, 46 mi/h)
2016–present
Quelle: http://en.wikipedia.org/wiki/Shanghai_Tower