146 Category 4: Special Projects 4 Owner SCI Acep Invest 3 Architect Architecte Ateliers 234 General Contractor Eiffage Construction Tertiaire Engineering Office Builders & Parteners Construction Period 07/2015 - 03/2017 The A9A1 building is an office building integrated in the Paris Austerlitz Highway covering project. The worksite is located on the Pierre MendèsFrance Avenue, which itself is built above the railways in its main part. Two tower cranes were equipped by a Locapal repartition frame. One of these cranes has been particularly hard to study because it was located over a beam. The forces generated at the base of the crane were between +115 and -57 tons depending on the orientation of the boom. The infrastructure was not supposed to receive this type of material, so it has been necessary to equally distribute the load on 3 supporting lines. The crane’s centre of gravity was in an offset position, requiring very precise work on the load repartitioning. Each beam line is separated by a distance of 15 metres from the other and the final frame is 30 m long and 8 m wide, with a height of 5 m. The analysis model has been realised in different steps (almost 20 stages) in order to respect the load repartitioning admissible by the structure. Three levels of PRS1300 (from Locapal) were disposed very precisely to ensure the correct load repartitioning. All these three levels have been embedded to comply with the very restrictive norms for installation of tower crane booms. SCIA Engineer allowed us to manage the different load cases (evolving with the crane orientation) by inserting nonlinear supports in very short delays. Locapal SAS Contact Mosnier Nicolas Address 344 rue Galilée 60100 Creil, France Website www.locapal.fr Locapal is specialized in non-permanent structures for civil engineering works and buildings. Locapal designs, manufactures and rents several specialized tools as formworks, provisory bridges and other metallic elements. Temporary Crane Base - Paris, France
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