The plans have been drawn-up for the Hua Yan Group in Wuhan in central China.
Phoenix Towers will be the tallest pair of buildings in the world.
The towers will be constructed with a steel superstructure; concrete core with ‘hat’ truss and a trussed structure at base which is out-riggered for lateral stability and concrete buttresses.
Chetwoods said: Phoenix Towers will be an iconic landmark within an ambitious environmental master plan for Wuhan, the capital of central China.
“Situated on the Yangtze River at the crossroads of nine provinces, the ‘City of 1000 Lakes’, population 10 million, has recently been designated an environmental ‘Super City’ by the regional and central government.
“At 1km high the Phoenix Towers will be the tallest pair of buildings in the world. The 47-hectare site (the towers cover 7 hectares) on an island in a lake at the end of a 3km avenue within a dense city layout will provide long vistas.
“Arching bridge-like over the surrounding boulevards, each tower will have a unique personality and attributes: the Feng tower will lean towards the commercial zone, the Huang tower towards the cultural and recreational zone.
“The project’s key emphasis is on the harmonious combination of 21st century Western technological know-how and experience with Chinese tradition and culture.
“In response to the Client’s wish to develop a new style of architecture that emphasises Chinese identity, the use of a pair of towers reflects the dualist elements of Chinese culture in contrast to a more Western monolithic form.”