# Archasm    # student competition    # shell    # form-finding

Daiki Yamaguchi, Shuzo Kawakami, Hayashi Kazuki

Amsterdam, Netherlands

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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 art works, instead of just walking linearly.

One shell serves as “pedestrian shell” whose ups and downs are little enough for the visitors to walk around easily, the other as “structure shell” which interactively rise and fall 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 the both shells settle on the bottom of the river to keep the whole structure stable. Form-finding analysis is carried out to obtain a catenary shell which effectively resist against gravitational force by assigning upward distributed forces onto the whole surfaces. 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 crosses 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)