|
|
发表于 2006-7-25 17:36:50
|
显示全部楼层
第五个最疯狂的设计 ?
China Central Television (CCTV) Headquarters, China
The new headquarters of China Central Television (CCTV) is being constructed adjacent to the Third Ring Road in Beijing, China, on a 10ha site in the new Central Business District. The project was started in March 2003 following a review of the design by a panel of Chinese experts. The construction is scheduled to be completed in time to broadcast the Beijing Olympics in 2008. The development is being undertaken by the Chinese Government as part of a plan to redevelop central Beijing with innovative and functional architecture, while preserving historic buildings at the same time. The new building will involve two 'L' shaped high-rise towers linked at the top and the bottom at an angle to form a loop, which has been described as a 'Z' criss-cross. The total construction cost is estimated at €600 million ($750 million). The CCTV tower will employ 10,000 people following completion in 2008.
CHINA CENTRAL TELEVISION BUILDING DESIGN
The building was designed by Rem Koolhass of the Office for Metropolitan Architecture (OMA) following a design competition organised by the Beijing International Tendering Company, which ended in December 2002. The competition was entered by ten companies, including: Dominique Perrault, Kohn Pederson Fox and Skidmore, Owings and Merrill LLP, Toyo Ito & Associates, FCJZ of Beijing, the East China Architecture and Design Institute of Shanghai (ECADI) and OMA. The international jury, including architect Arata Isozaki and critic Charles Jencks narrowed the competition to three designs, by Toyo Ito & Associates with FCJZ of Beijing, the East China Architecture and Design Institute and OMA, before choosing the OMA design.
CHINA CENTRAL TELEVISION BUILDING CONTRACTORS AND CONSTRUCTION
Ove Arup & Partners (Arup) (East Asia and European Divisions) are the civil engineering contractors. They will be responsible for structural and mechanical engineering of the structure. Arup are also providing security consultancy services to the building, carrying out risk analysis and design of security systems. The OMA have formed a design team to continue work on the building, which includes the ECADI (as a domestic partner required under Chinese tender regulations) and Arup.
The tallest tower will be 230m high with a floor area of 405,000m². The tower will consist of a series of horizontal and vertical sections establishing it as an earth bound structure and not a 'skyscraper'. This will contain administration, news, broadcasting, studios and programme production areas. A second, smaller building will contain 116,000m² of floor space and will be the Television Cultural Centre (TVCC). This will contain a hotel, a visitor's centre, a large public theatre and exhibition and conference facilities.
The structure of the building will be a challenge to the engineering contractors Arup. They will have to design a plan to construct the two 60° leaning towers that are bent at 90° at the top and bottom to meet, forming a continuous loop. The towers will be constructed at opposite diagonal corners of a 160m x 160m footprint and linked by an 'L' shaped posorry arm; they will then be co-joined at the top by an 'L' shaped bridge opposite the posorry arm. The tower footprints will be 40m x 60m and 52m by 42m. Thin concrete cores inside the building will support the internal floors.
A diagrid system 'exoskeleton' has been adopted on the external faces of the building to give a tube structure that will resist gravity and any lateral forces. The positioning of the columns and diagonal tubes reflects the distribution of forces in the surface skin of the building. The columns of the diagrid have the same exposed width but the depth varies according to the load, while the diagonals are all 1m x 60cm plate girders, with only the steel thickness varying. The building is set to break the Chinese design codes for such a structure, but this was expected for such an innovative design.
However there are also strict seismic requirements for Beijing buildings that have to be met. The building will need a resistance to intensity 8 with a peak ground acceleration of 0.2g. Arup is running an advanced non-linear computer simulation, the OASYS Dyna application, to determine the effect of seismic shock on the building's 40,000 structural elements. Beijing Geotechnical Institute is collaborating on the earthquake resistance part of the design as well as surveying the site for ground water levels. A contractor for the construction phase of the project was due to be appointed in late 2003 and the construction due to start in 2004. The construction contractor has not yet been announced. |
-
-
|
IP卡
狗仔卡
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
