Shànghǎi Zhōngxīn Dàshà
|Former names||Shanghai Center|
|Location||501 Yincheng Middle Rd, Lujiazui, Pudong, Shanghai, China|
|Construction started||29 November 2008|
|Completed||6 September 2014|
|Inaugurated||18 February 2015|
元15.7 billion (yuan)
|Owner||Shanghai Tower Construction and Development|
|Architectural||632 m (2,073 ft)|
|Tip||632 m (2,073 ft)|
|Top floor||587.4 m (1,927 ft) (Level 127)|
|Observatory||561.25 m (1,841 ft) (Level 121)|
|Floor count||127 above ground
5 below grade
|Floor area||380,000 m2 (4,090,300 sq ft) above grade
170 m2 (1,800 sq ft) below grade
|Design and construction|
|Architect||Jun Xia (Gensler)
I.DEA Ecological Solutions
|Main contractor||Shanghai Construction Group|
The Shanghai Tower (Chinese: 上海中心大厦; pinyin: Shànghǎi Zhōngxīn Dàshà; Shanghainese: Zånhe Tsonshin Dasa; literally: "Shanghai Center Tower") is a 632-metre (2,073 ft), 127-story megatall skyscraper in Lujiazui, Pudong, Shanghai. As of 2015, it is the world's tallest building, by height to highest usable floor (Level 127, 587.4 m). It also has the world's highest observation deck within a building or structure (Level 121, 561.25 m), and the world's fastest elevators at a top speed of 20.5 m/s (74 km/h). It is the world's second-tallest building by height to architectural top (behind Dubai's Burj Khalifa, 828 m) and the world's third-tallest structure (behind Tokyo Skytree, 634 m).
Designed by international design firm Gensler and owned by the Shanghai city government, it is the tallest of the world's first triple-adjacent super-tall 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.
Construction work on the tower began in November 2008 and topped out on 3 August 2013. The exterior was completed in summer 2015, and work was considered complete in September 2015. Although the building was originally scheduled to open to the public in November 2014, the actual public-use date slipped considerably. The observation deck was opened to visitors in July 2016; the period from July through September 2016 was termed a "test run" or "commissioning" period.
Planning and funding
Planning models for the Lujiazui financial district dating back to 1993 show plans for a close group of three supertall skyscrapers. The first of these, the Jin Mao Tower, was completed in 1999; the adjacent Shanghai World Financial Center (SWFC) opened in 2008.
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. Funding for the tower's construction was obtained from shareholders, bank loans and Shanghai's municipal government. The tower had an estimated construction cost of US$2.4 billion.
The tower takes the form of nine cylindrical buildings stacked atop each other, totalling 127 floors, all enclosed by the inner layer of the glass façade. Between that and the outer layer, which twists as it rises, nine indoor zones provide public space for visitors. Each of these nine areas has its own atrium, featuring gardens, cafés, restaurants and retail space, and providing panoramic views of the city.
Both layers of the façade are transparent, and retail and event spaces are provided at the tower's base. 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. The tower is able to accommodate as many as 16,000 people on a daily basis.
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, located between the 84th and 110th floors, is to be operated by Jin Jiang International Hotels as the Shanghai Tower J-Hotel, and at the time of its completion it will be the highest hotel in the world. The tower will also incorporate a museum. The tower's sub-levels provide parking spaces for 1,800 vehicles.
Vertical transportation system
The vertical transportation system for Shanghai Tower was designed by an American consultant, Edgett Williams Consulting Group with principal Steve Edgett as 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 four sky lobbies each served by double-deck shuttle elevators. Access to the hotel is through a fifth sky lobby at levels 101/102. Each two-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 which travel at 18 metres 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.
In September 2011, Mitsubishi Electric Corp. announced that it had won a bid to construct the Shanghai Tower's elevator system. Mitsubishi supplied all of the tower's 149 elevators (108 of which are lifts), including three high-speed models capable of travelling at 1,080 metres (3,540 ft) per minute (64.8 kilometres (40.3 mi) per hour). When they were installed (2014), they were the world's fastest single-deck elevators (18 metres/second) and double-deck elevators (10 metres/second). A 10 May 2016 Mitsubishi press release stated that one of the three shuttle elevators had been installed to travel 1230 metres/minute - the equivalent of 73.8 kilometres per hour (46 mph), the highest speed ever attained by a passenger elevator installed in a functioning building. The building also broke the record for the world's furthest-travelling single elevator, at 578.5 metres (1,898 ft), surpassing the record held by the Burj Khalifa. 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.
The Shanghai Tower incorporates numerous green architecture elements; its owners received certifications from the China Green Building Committee and the U.S. Green Building Council for the building's sustainable design. In 2013, a Gensler spokesman described the tower as "the greenest super high-rise building on earth at this point in time". The building is designed to capture rainwater for internal use, and to recycle a portion of its wastewater.
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%. This reduced the amount of construction materials needed; the Shanghai Tower used 25% less structural steel than a conventional design of a similar height. As a result, the building's constructors saved an estimated US$58 million in material costs. Construction practices were also optimised for sustainability. Though the majority of the tower's energy will be provided by conventional power systems, 200 vertical-axis wind turbines located near the top of the tower are capable of generating up to 350,000 kWh of supplementary electricity per year, and are expected to provide 10% of the building's electrical needs. 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. In addition, the building's heating and cooling systems use geothermal energy sources.
The following is a breakdown of floor use in the Shanghai Tower:
Tuned mass damper display
|110||VIP Business Center|
|105-109||J Hotel Presidential Suite, Super Deluxe Room|
|104||Restaurant, Spicy Hall, VIP Room|
|103||Theme Restaurants, Luxury Boutique Wine Cellar, Banquet Hall|
|101||J Hotel Sky Lobby / Lounge, Sky Bar|
|86-98||J Standard Hotel Rooms, Deluxe Rooms|
|85||Spa, Fitness Center|
|84||Swimming Pool, Sky Lounge, Bar, Sky Gardens|
|3-4||Shops and Restaurants|
|2||Shanghai Centre Grand Ballroom, Boutique Office Lobby, Shops and Restaurants|
|1||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|
In 2008, the site – previously a driving range – was prepared for construction. A groundbreaking ceremony was held on 29 November 2008, after the tower had passed an environmental impact study. The main construction contractor for the project was Shanghai Construction Group, a member of the consortium that owns the tower.
A repetitive slip-forming process was used to construct the tower's core floor by floor. 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. By late December 2011, the tower's foundations had been completed, and its steel construction had risen above the 30th floor. By early February 2012, the tower's concrete core had risen to a height of 230 metres (750 ft), with around fifty floors completed. 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.
By May 2012, the tower's core stood 250 metres (820 ft) high, while floors had been framed to a height of 200 metres (660 ft). By early September 2012, the core had reached a height of 338 metres (1,109 ft). By the end of 2012, the tower had reached the 90th floor, standing approximately 425 metres (1,394 ft) tall. By 11 April 2013, the tower had reached 108 stories, standing over 500 metres (1,600 ft) tall and exceeding the heights of its two neighbouring supertall skyscrapers, the Jin Mao Tower and the Shanghai World Financial Center.
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. A topping-out ceremony was held at the site of the last beam. 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.
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." 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".
In January 2014, the tower's crown structure passed the 600-metre (2,000 ft) mark, as its construction entered its final phase. The tower's crown structure was completed in August 2014, and its façade was completed shortly after. The tower's interior construction and electrical fitting-out were completed in late 2014. The opening was gradually introduced during the summer of 2016.
In February 2014, two Russian and Ukrainian urban explorers, Vadim Makhorov and Vitaly Raskalov from Ontheroofs, climbed the under-construction Shanghai Tower through stairs and climbed out to a crane on the tower's top. They released video and photos footage taken from the tower's top. In April 2014, Malaysian photographer Keow Wee Loong scaled the Shanghai Tower to take photographs.
- List of tallest buildings in Shanghai
- List of tallest buildings in China
- List of tallest buildings in the world
- List of buildings with 100 floors or more
- List of twisted buildings
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Shanghai World Financial Center
|Tallest building in China
632 metres (2,073 ft)
Shanghai World Financial Center
|Tallest building in Shanghai
632 metres (2,073 ft)
16.83 m/s (55.22 ft/s) (60.6 km/h, 37.7 mi/h)
|World’s fastest elevator
20.5 m/s (67.26 ft/s) (73.8 km/h, 45.9 mi/h)