BioMat Pavilion 2021 – LightPRO Shell, Active-Bending Structure from Natural Fibre Profiles
The LightPRO Shell Pavilion is a lightweight structure that combines an active-bending gridshell made of natural fibre biocomposite profiles with a tensile membrane. The resulting system is a combination of two doubly curved surfaces that share a continuous beam outline. The outline is composed of two connected profiles that act as a beam, transferring forces from both systems to three anchor points attached to a superficial foundation.
The developed ‘bamboo-like’ natural fibre-based biocomposite profiles are newly produced through the pultrusion technique. Pultrusion is a continuous process for manufacturing fibre-reinforced polymers with a constant cross-section. In this project, natural flax and hemp fibres were used. The produced profiles are hollow, with a diameter of 25 mm, a thickness of 4 mm thickness and lengths ranging from 6.5 m to 12.5 m to fit the required span. The pavilion has a covering span of 10 m and a maximum height of 4.8 m at the perimeter.
Photo: ©BioMat at ITKE, University of Stuttgart, Masih Imani
Traditional diagonal lashing methods with steel cables are used to join the profiles in a grid. The grid is connected to the beam outline via a customised joint system. The membrane is attached to the three foundations and tensioned along the perimeter using rope lacing.
This innovative structure demonstrates a sustainable approach to future architecture. The outcome is based on several years of research into the application of biobased materials.
Material development and production was carried out by the partners from DITF, CG-TEC and BAM. Zenvision GmbH was involved in the technical design and development phases. Steinhuder assisted in assessing an alternative bio-based connection system for the structure. Bieri produced and sponsored the membrane.
The pavilion is a result of intensive work on the LeichtPRO research project and is funded by FNR (Federal Agency of Renewable Resources) and BMEL (Federal Ministry of Food and Agriculture), FKZ: 22027018.
Related links:
- More information on the associated project LeichtPRO
- Project info
- Press release from University of Stuttgart
Photos credits: ©BioMat at ITKE/ University of Stuttgart, Photo credits: Masih Imani