130 Used software: ESA-Prima Win • Type: Bowstring bridge with concrete deck for cars and cyclist/pedestrian traffic • Location: Béthune (Northern France) • Total steel weight: +/-950 tons • Total length: 23.04 m – 92 m – 23.04 m • Width of concrete slab: 11.5 m • Exploitation: 2 rows + multifunctional area’s About the project The specified bridge has as goal to crossover a fluvial stopping place of boats situated at Béthune. (following the deviation RD 937) The bridge overtakes a pedestrian path (situated in the park of Loisne), a dead arm of the canal Aire which serves as a docking station for boats and a regional road. The construction consists of two main beams (box beams) which have spans of 23.04 m (Land head-pylo n), 92m (pylon-pylon) and again 23.04 m (pylon-land head). Between these two beams transverse elements are placed, which are standard I-rolled sections, except for the box beams at the pylon support. Most of the weight of the bridge is held up by the suspension cables (made of Z-strings) which connect the main longitudinal beams and the arches. These arches guarantee the stability of the bridge sollicitated by permanent as well as traffic loads. On top of the main structural steel construction, premade concrete slabs are connected onto the transverse beams to form the actual driving lanes. The calculations included the control of the bridge under service conditions as well as a calculated proposal of the different construction phases. Calculations were made according to EC 3 with special requirements in compliance with the French codes. Use of ESA-Prima Win Description of the technical questions to be solved with ESA-Prima Win Both, for the dimensioning of the bridge under traffic situation as well as the erection engineering of the bridge, ESA-Prima Win was used. From a technical point of view the engineering part of this project had several challenges First of all the implementation of the different solicitation models was done according to the French code in an efficient and modular way. Bowstring bridge with deck for cars and pedestrians The specified bridge crosses a fluvial stopping place of boats situated at Béthune. It is a prolongation of a pedestrian path to a dead arm of the canal Aire which serves as a docking station for boats and it leads to a regional road. The construction consists of two main beams (box beams) which have spans of 23.04 m, 92 m and again 23.04 m. Between these two beams transverse elements are placed. Most of the weight of the bridge is held up by the suspension cables. On top of the main structural steel construction, premade concrete slabs are positioned to form the actual driving lanes. The calculations included the control of the bridge under service conditions as well as a calculated proposal of the different construction phases. Calculations were made according to EC 3 with special requirements in compliance with the French codes. Owner: Département du Pas de Calais, Direction des infrastructures et des transports Architect: Direction des Infrastructures et des Transport, Service des ouvrages d’art General Contractor: Aelterman Bvba and DG Construction Engineering Office: Ingenieursbureau Stendess N.V. Construction Start: 2007 Construction End: 2008 Location: Béthune, France Project Information Short Description CAE Civil Works 3 Ingenieursbureau Stendess N.V. Contact Jurn De Vleeschauwer, Pascal Vandewalle Address Grote Baan 18 9920 Lovendegem, Belgium Phone +32 9 370 71 25 Email [email protected] Website www.stendess.com Ingenieursbureau Stendess N.V., a steel and concrete engineering company The engineering firm Stendess was founded by an experienced team specialising in the study and design of steel constructions. From its establishment Stendess has made high quality and full service provision its top priority. Thanks to this integral service, where the design of the metal superstructure and the concrete substructure are calculated and drawn by experts in the same office, the building owner and principal contractor retain 100 % control over the complete structure. Stendess can follow up on cross-border projects in accordance with most standards and codes: Eurocode, NBN, NEN, DIN, NF, AISC, British Standards and specific national codes. Key activities • Industrial buildings: steel factories, power plants, depots, etc, • Other buildings: service buildings, concert halls, sport facilities, swimming pools, apartment buildings, • Bridge constructions: arch bridges, cable –stayed bridges, suspension bridges, bascule bridges, swing bridges, orthotropic bridges, mixed steelconcrete bridges… • Off-shore projects: lock gates, Roro, oil rigs… • Industrial equipment: silos, cranes, crane ways, storage tanks… • Erection engineering: longitudinal and transverse repositioning, skidding, lifting, bridge launching… Locations of the constructions: Belgium, the Netherlands, France, Germany, United Kingdom, Spain, Sweden, Saudi Arabia, Greece, Singapore, Chile, Brazil, Cameroun, Russia, Thailand…
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