Archasm; student competition; visionary project; shell; form-finding


Daiki Yamaguchi, Shuzo Kawakami, Hayashi Kazuki


Amsterdam, Netherlands

Project Area


Project Term



We propose a bridge in the shape of curved surfaces composed of 2 RC shell structures. This two-dimensionally developed bridge allows pedestrians to take a variety of actions straying from the path such as sitting, eating, shopping, or circulating around artworks, instead of just walking linearly.

One shell serves as a “pedestrian shell” whose ups and downs are little enough for the visitors to walk around easily, the other as a “structure shell” which interactively rises and falls with the “pedestrian shell” to create integrated art spaces between them. There are several holes on the surfaces, for the purpose of the accessibility and lighting property of the indoor spaces.

Some parts of both shells settle on the bottom of the river to keep the whole structure stable. The form-finding analysis is carried out to obtain a catenary shell that effectively resists gravitational force by assigning upward distributed forces onto the whole surface. In this planning, the shells are also shaped such that they can drag the river water into the square plan and that boats can pass underneath them. This way, hydrophilic spaces can be achieved where people on the bridge and on the boats dynamically cross each other.

This distinctively and intentionally formed bridge becomes a focal point of art in harmony with a vivid waterscape in Amsterdam.

Site photo (from east).

Site photo (from north).


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