Text description provided by the architects. This pavilion is presented by Osaka Prefecture and Osaka City at the Expo2025 Osaka, Kansai, Japan. Under the main theme of "REBORN," it aims to embody the host city's vision by creating a next-generation, environmentally symbiotic architecture that contributes to the realization of SDGs and a decarbonized society. Inspired by the history and culture of "Water City Osaka," which has thrived on wood and water, the pavilion reinterprets these elements to create a new architectural landmark that showcases Osaka's charm and growth to the world.
The unique membrane roof, with no two shapes alike, represents the persity of Osaka. "Water Veil" is formed as recycled water flows over the roof, cascading into a water basin below, where it is filtered and recirculated in a sustainable system. Locally sourced cypress from Osaka Prefecture is used for the interior and exterior finishes. The central atrium is bathed in soft, dappled light, creating a serene and inviting space filled with the warmth and fragrance of wood—a true symbol of relaxation and comfort.
中庭和展覽空間采用橢圓形平面設計,有機地重疊在一起。這些橢圓通過緩坡連接,形成流暢的參觀動線,構成包容性空間布局,確保所有參觀者獲得一致的參觀體驗。中庭的木質螺旋柱靈感來自 DNA 結構,象征性地支撐著多樣化的屋頂形態。
The atrium and exhibition spaces are designed with elliptical floor plans that organically overlap. These ellipses are continuously connected by gentle slopes, creating a seamless circulation route that allows all visitors to experience the same exhibition path—an inclusive spatial layout. The wooden helical column in the atrium, inspired by DNA, symbolically supports the perse roof forms.
The wooden helical column and all interior and exterior finishes use locally sourced timber from Osaka Prefecture. To appropriately filter and diffuse natural light from the roof, we used a new material, made by twisting yarn from recycled pulp and sewing it into a textile-like fabric. In addition, lightweight and flexible next-generation perovskite solar cells are suspended in banner form, presenting a new expression of solar energy use.
為了實現復雜的設計造型,建筑師在設計過程中充分運用了計算機技術。膜屋頂的每個曲面都是由不同半徑的球體修剪而成的球形片段組成。這種球形幾何形狀,便于透明膜的安裝和桁架結構的有效布置。開發 3D 模型用于模擬“水面紗”的效果和環境情況。
To realize the complex forms, we embraced new design methods utilizing computational design. Each curved surface of the membrane roof is composed of spherical segments generated by trimming spheres of various radii. By using spherical geometry, we made it easier to fit the transparent membrane and arrange the truss structure efficiently. The 3D model we developed was used for simulating "Water Veil" and environmental conditions.
支撐膜屋頂的木制螺旋柱為受 DNA 啟發的雙螺旋形式。該項目面臨的主要挑戰在于如何使用木材構建復雜的曲面形式。為了平衡美學和成本效益,項目最大限度地減少了彎曲木材的使用,主要依靠扁平的木質構件來實現雙螺旋結構。
The wooden helical columns that support the membrane roof feature a double-helix form inspired by DNA. One of the major challenges was constructing these complex curved surfaces using wood. To balance aesthetics and cost efficiency, we minimized the use of bent wood and realized the double-helix structure primarily with flat wooden elements.
Blessed with rivers and seas, and built using timber from all over Japan, Osaka has developed to be an attractive city and flourished through the amalgamation of many perse identities. Osaka Healthcare Pavilion stands as a symbol of progress, embodying the theme of "REBORN." A future where life, sustainability, and innovation shine together.