Structural Studio

EDION Peace Wing Hiroshima, Hiroshima, Japan
Architect: TOHATA ARCHITECTS & ENGINEERS, INC. + ENVIRONMENT DESIGN INSTITUTE + TAISEI DESIGN Planners Architects & Engineers
Structural Engineer: TAISEI DESIGN Planners Architects & Engineers (Structural Design)

EDION Peace Wing Hiroshima is a football-specific urban stadium completed in 2023 and opened in 2024, set within Hiroshima’s Central Park precinct near major civic destinations. Gross floor area is 65,878 m². Seating capacity is about 28,500. The planning logic prioritizes year-round public use: a wide concourse system and park connections keep circulation active beyond match days, positioning the stadium as daily infrastructure rather than a single-purpose venue.

The signature roof, expressed as the “Wings of Peace,” is a beam-string (tension–compression) roof configured around a north–south span of approximately 135 m. A cable-based tied keel-girder concept is used to suppress thrust, enabling comparatively slender supports and reinforcing the “floating” roof reading. At the roof edge, an approximately 14 m steel cantilever forms the thin leading profile toward the pitch. Support geometry differs by side: a single inclined column condition on one side and paired inclined “mountain” columns on the other, coordinating structure with open corners that maintain visual and airflow permeability.

The seating bowl structure is organized to keep the underside legible. Bracing is intentionally not placed at the soffit zone; instead, horizontal actions are collected and delivered to braced lines via upper-level arch beams, preserving the continuous horizontal expression of the raker/terrace geometry. Construction speed was a design constraint, addressed by extensive precast concrete (PCa) adoption for primary stand elements and by using half-precast slab systems to reduce shoring needs across approximately 9 m spans. The outcome is a clear demonstration of how long-span roof engineering, lateral-force routing, and industrialized precast delivery can be integrated into an urban stadium that also functions as a public learning object for structure and construction logic.

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