ETFE+PTFE Membrane Structure Project of Phoenix Xintiandi Commercial Building in Conghua, Guangzhou

The Wanhao Space Structure Team translates the dynamic elegance of the phoenix totem into the geometric rhythm of architectural curves. Using parametric design to simulate the natural arc of spreading wings, they’ve created a smooth double-curved membrane form that breaks from traditional boxy commercial architecture. This design thrives on dynamic light interactions: during the day, the highly transparent ETFE membrane refracts sunlight like crystalline ice, crafting a bright and airy shopping environment; at night, integrated lighting systems trace the phoenix silhouette through the membrane, transforming it into a radiant urban landmark under the night sky. By merging regional cultural symbols with modern architectural aesthetics, the canopy evolves beyond a mere functional covering, becoming an artistic vessel for urban memory and future aspirations.

Technically, Wanhao employs a principle of "symbiosis between science and art" to develop an industry-leading membrane system. The composite structure combines an outer ETFE membrane (sourced from international supplier Nowofol) and an inner PTFE membrane: the outer ETFE uses a three-layer air-cushion configuration, offering 95% light transmittance and thermal insulation, while the inner PTFE provides structural support via high-strength fiber-based fabric. This dual-membrane system balances "lightweight translucency" with "sturdiness and durability." For the large-span steel structure, Wanhao incorporates biaxial tension testing to verify creep resistance under bidirectional stress. Uniaxial weld seam testing and Keder edge sealing technology ensure curved weld joints achieve 1.5x the industry-standard tensile strength, overcoming the straight-weld limitations of conventional membrane structures. Detail designs—such as thickened end air-cushions for water drainage, waterproof testing for secondary drainage channels, standard bird-proof net nodes, and a 0.25kPa–1.2kPa adaptive air pressure system—transform functional needs into technological innovations, demonstrating end-to-end control from macro-structures to micro-nodes.

As the core membrane service provider, Wanhao builds competitive advantage through three core capabilities: global supply chain management, digital design-construction systems, and regional climate adaptation. The team secures scarce 350μmETFE materials through deep international supplier partnerships, optimizing logistics to ensure project timelines and quality. Using 3D modeling to simulate membrane stress, their integrated "design-form-fabricate-install" process controls installation errors within ±2mm, achieving precise design realization. For South China’s typhoon and rain-prone climate, the canopy is engineered to withstand Category 12 typhoons, featuring redundant pump systems, backup fans, and PTFE’s self-cleaning and 25+ year service life, creating a durable engineering solution that withstands time and weather.

The Phoenix Xintiandi Sky Canopy represents more than Wanhao’s technical prowess; it marks a transformative step toward "sustainable ecological architecture." The recyclability of ETFE and environmental friendliness of PTFE align with green building principles, while the phoenix motif echoes Conghua’s role as an "ecological hub and commercial new town," embodying the region’s developmental vision through architecture. Through the tripartite logic of "technical breakthrough, aesthetic innovation, and cultural empowerment," Wanhao elevates membrane structures from mere building skins to material embodiments of urban spirit. This project sets an innovative precedent for the Greater Bay Area—proving that commercial landmarks can harmonize function and aesthetics, while intertwining technology with cultural identity. As a "city in the sky," it will continue to script Conghua’s commercial narrative, painting its future with light, shadow, and architectural ambition.