SCIA User Contest 2017 Online Book

70 Category 2: Civil Structures 2 Owner RATP Architect RATP General Contractor Freyssinet France Engineering Office Eurometaletudes Construction Period 11/2016 - 06/2017 The metro viaduct between the stations “Bercy” and “Quai de la Gare” in Paris was built at the beginning of the 20th century (designed in 1916). Each span is about 20 m long and supported by cast iron columns or masonry piers. After a century of operation, one of its masonry piers was extremely cracked and needed to be demolished and re-built. In order to be able to remove the old bearings and masonry structures to create the new ones, we studied the jacking of the spans on both sides of the pier, including the temporary steel structure founded on concrete footings laid on micro-piles. Mobile load functionality in SCIA Engineer was used to carry out the rechecking of the span structures and to calculate the vertical loads on the final bearing structure. Then the new concrete structure was designed with shorter dimensions to allow for kerb-stone disposal and installation of new bearings. The main challenge in this project was to design a free-standing temporary structure on foundations which could be used both during the jacking phase and normal operation. The new concrete pier is founded on a beam with the span of 5 metres between the foundations of the jacks. Metro Viaduct Pier Reconstruction - Paris, France Eurometaletudes Contact Frédéric Jouanneau Address 14-16 rue Soleillet BL43 75020 Paris, France Website www.eurometaletudes.fr Eurometaletudes is an engineering company, specialised in steel structure design for complex structural projects (new constructions, refurbishments, temporary structures and site works equipment), including jacking and prestressing reinforcements. We can bring solutions to our clients for every structural project!