143 Category 4: Special Projects 4 Contact Cédric Ricaud Address BP 30019 60 rue de la brosse 45110 Chateauneuf sur Loire, France Website www.baudinchateauneuf.com Baudin Chateauneuf was founded in 1919. From its beginnings in the production of electrical towers and farm sheds, the company moved into the construction of steel bridges. In 1954, the company sought to diversify its activity. Its mastery of metal logically led Baudin into the field of metal frames. Nowadays Baudin offers a full range of services at the highest technological level in a lot of business areas: construction and renovation of civil engineering work, steel structures, mechanical engineering and as a general contractor. Baudin Châteauneuf Solar Sail “Cité Musicale” - Boulogne Billancourt, France SE Owner Conseil Général 92 Architect Shigeru Ban Architects Europe General Contractor Bouygues Bâtiment Engineering Office RFR Construction Period 09/2014 - 06/2016 As a part of the building of the Cité Musicale in Boulogne-Billancourt near Paris, Baudin is responsible for this special project. These are two symmetrical three-dimensional truss structures composed of tubular connections. Each one is 18 m long and more than 40 m high. These structures support 880 m2 of photovoltaic panels. The crucial aspect is the motorization, which enables the structure to follow the path of the sun. The first difficulty encountered was due to the complex shape of the structure. The model was designed in SCIA Engineer on the basis of the CAD file of the architect. The DWG file was transferred to SCIA Engineer. The intensities of wind loads on the photovoltaic panels were determined by wind tunnel tests. It represents 146 wind load cases for 302 photovoltaic panels. The wind, excluding all other cases of loads, represents 132276 point-loads. This data was imported into the design model using the Table Input tool. The possibility to input files was a big advantage, as it enabled the 3D structure to be formed quickly, easily and exactly in SCIA Engineer. Production will start in spring and will be followed by the assembly on the site in September 2015. In this way Baudin will demonstrate its multidisciplinary competence in carrying out a new “above-standards” construction work.
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