Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Engineering of assembling of metallo-textile structures: case of the Gerland stadium membrane
The coverings for the Gerland stadium are specials for their sizes: 4300 sqm. for each turning. Each turning is covered with seven membranes, which the largest one have the following dimensions: 45 m x 22 m, 1000 sqm. and a weight of 3.5 tons. The size of the membranes and the willing to have a durable structure led to a special coated fabric. This fabric is realised following the Precontraint technique which provides a continuous and controlled tension in warp and weft. Furthermore, the mechanical performance characteristics are identical in both directions. This coated fabric, whose mass is 2 kg/sqm., has a tensile strength of 500 daN/m. The upper face is covered with special varnish which offers a remarkable resistance to the UV rays and the atmospheric polluting agents. The panels of fabric were assembled by high frequency welding to obtain the final membranes. In order to resist to snow and wind load, which is very important for such a tensile structure, each membrane is tensed at about 500 daN/m on all his periphery. The stability and permanency of textile structures require membranes to be under pressure. Membranes are retained on intermediary arc, they are tensed on the front arcs and the cantilever beam which is used as an eaves gutter. In this way, the membrane is watertight. To respect the homogeneity of the whole construction, the architect chose a construction principle with large bending radius. In order to insure the full stability of the structure, the membrane is tied on the inferior arcs by the mean of valley ropes, realised in Kevlar and tensed by a joining piece in stainless steel. Greater difficulty consists in the spreading out of the membranes: 1000 sqm., 3.5 tons at 27 meters of altitude. Fixing and tension systems required an extreme precision of the interface between structural steel work and textile structure: 2 or 3 cm for a length of 22 meters.
Engineering of assembling of metallo-textile structures: case of the Gerland stadium membrane
The coverings for the Gerland stadium are specials for their sizes: 4300 sqm. for each turning. Each turning is covered with seven membranes, which the largest one have the following dimensions: 45 m x 22 m, 1000 sqm. and a weight of 3.5 tons. The size of the membranes and the willing to have a durable structure led to a special coated fabric. This fabric is realised following the Precontraint technique which provides a continuous and controlled tension in warp and weft. Furthermore, the mechanical performance characteristics are identical in both directions. This coated fabric, whose mass is 2 kg/sqm., has a tensile strength of 500 daN/m. The upper face is covered with special varnish which offers a remarkable resistance to the UV rays and the atmospheric polluting agents. The panels of fabric were assembled by high frequency welding to obtain the final membranes. In order to resist to snow and wind load, which is very important for such a tensile structure, each membrane is tensed at about 500 daN/m on all his periphery. The stability and permanency of textile structures require membranes to be under pressure. Membranes are retained on intermediary arc, they are tensed on the front arcs and the cantilever beam which is used as an eaves gutter. In this way, the membrane is watertight. To respect the homogeneity of the whole construction, the architect chose a construction principle with large bending radius. In order to insure the full stability of the structure, the membrane is tied on the inferior arcs by the mean of valley ropes, realised in Kevlar and tensed by a joining piece in stainless steel. Greater difficulty consists in the spreading out of the membranes: 1000 sqm., 3.5 tons at 27 meters of altitude. Fixing and tension systems required an extreme precision of the interface between structural steel work and textile structure: 2 or 3 cm for a length of 22 meters.
Engineering of assembling of metallo-textile structures: case of the Gerland stadium membrane
Die Konstruktion von Metall-Textil-Strukturen am Beispiel der Gerland-Stadium-Membrane
Mouesca, B. (Autor:in)
Techtextil Symposium, 1998 ; 1 ; 49-51
1998
3 Seiten, 2 Bilder
Aufsatz (Konferenz)
Englisch
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