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The ETFE membrane structure roof project of Chongqing East Station is located in Nan'an District, Chongqing. The secondary steel structure of the project uses 2200 tons of steel, and the unfolded area of the membrane structure is 35000 square meters.The roof system of Chongqing East Railway Station adopts the form of "pipe truss steel structure+elliptical skylight+tree shaped support column+ETFE air cushion membrane", fully extracting the regional elements and cultural characteristics of Chongqing.
The architectural design is based on the concept of mountains and waters stretching thousands of miles, towering yellow stalks", using the brushwork of Chinese landscape painting. The front is adorned with six strong and powerful tree shaped columns, showcasing the resilient and upright posture of the Chongqing tree - the yellow stalk tree. The water droplet shaped skylight on the sliding area roof is covered with ETFE (soft glass) air cushion film, which has good properties such as lightweight, light transmission, thermal insulation, corrosion resistance, weather resistance, self-cleaning, etc.
ETFE fabric offer significant environmental benefits. Firstly, their high light transmittance maximizes natural daylight utilization, reducing the demand for artificial lighting and thus saving energy consumption. This lessens the carbon footprint associated with power generation. Secondly, ETFE is recyclable. At the end of its service life, the material can be reprocessed and reused, minimizing waste and environmental pollution.
Moreover, its lightweight nature reduces the need for heavy construction materials and transportation, further decreasing energy expenditure and emissions during the building process. This makes ETFE membrane structures a sustainable choice for modern architecture.
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