The China World Trade Center (CWTC) development in Beijing is a large long-term project in the heart of Beijing’s Central Business District (CBD).
For Phase Three, a new tower is being erected that will become the tallest building in Beijing at 330m. It will feature office accommodation, a five-star hotel at the top of the building, as well as retail and entertainment venues.
The project is nearing the end of the planning phase and excavation work is due to start in mid-2004.
About the tower
300,000m² floor area
Phase One, completed in 1994, and Phase Two, completed five years later, comprise two office blocks with hotel and retail outlets.
The CWTC is Beijing’s flagship development and will offer state-of-the-art office accommodation. The client (the China World Trade Center Company) wanted a building that would be seen as the best to attract top companies and premium rents.
Arup faced a huge challenge in proving that the new tower would be able to withstand the high seismic design intensity (Intensity VIII) in the area. The height and the scale of the tower go well beyond the limits of previous structures in the city.
The project team undertook an intense period of analysis to prove to the client that the building was robust. They developed new analysis methods that included non-linear time-history analysis. This has provoked a great deal of interest in the Beijing planning community as such comprehensive tests have never been undertaken before.
Arup studied the feasibility and cost-effectiveness of a number of structural systems in order to deliver the best value for the client. Structural steel perimeter frames together with a central braced service core were chosen as the main lateral system which will be combined with concrete for the lower portion of the building.