EMASA PSSC 2019 - ERECTION ENGINEERING OF PLATED STRUCTURES WITH COMPLEX GEOMETRY
Channel: Rafael Scudelari de Macedo
Date: 2019-11-13

Full Paper: http://emasa.eu/images/emasa/blog-entry/EMASA%20PSSC2019%20ERECTION%20ENGINEERING%20OF%20PLATED%20STRUCTURES%20WITH%20COMPLEX%20GEOMETRY%20Grayscale.pdf
Abstract. This paper is a knowledge share of the structural engineering analyses carried out for the safe erection of an architecturally innovative footbridge. The footbridge was composed of many different modules, each weighing 20 to 30 tons. These modules were all large welded platted structures made of a deck of about 10m by 8m and a single column each. The column’s angle was different for each module and could be up to 45 degrees in any arbitrary direction. These modules were fabricated entirely on the shop and their transportation to the construction site included maritime and road transportation. Upon arrival on site, they had to be lifted and rotated by two cranes in tandem for their final installation. Initially, the design of the custom transport saddles is discussed. The geometric constraints made it impossible, during rigging, to properly align the lifting lugs to prevent the tilt of the module, thus there was a real risk of the module tipping over. The extensive and careful studies executed for the erection of each module is presented in detail and the possible solutions are discussed. Finally, the design of the lifting lugs is debated in detail, with a comparison of different types exposing their benefits and weaknesses.