Yu Zhong District, Chong-Qing, China
This project is a super high-rise 8 tower building complex. The main structures consist of two 350m high towers and four separate 250m high towers each of which are connected by the world’s highest 300 m long sky bridge.
Given that Chongqing is located in a moderate seismic zone, the project was able to adopt a stability structural system which comprises a RC core, 4 corner mega columns, belt trusses, secondary gravity frame and an innovative outrigger system for the slender 350m high towers.
To address to the challenges and overcome the shortcomings of a traditional steel outrigger truss system an innovative hybrid outrigger system with a structural fuse was designed. This innovative system, which is suitable for high-rise buildings in moderately seismic regions, saved 10% of steel consumption in the construction compared with a traditional outrigger system. It also simplified the steel connection joints and shortened the construction program by four months.
Although the project lead to a very complex and challenging construction process, it is impressive that the whole structural and façade construction was completed within a very tight schedule and required very clever methodology and sequencing.