Design and installation of a self-raising roof structure on a circular existing structure

Abstract

This thesis looks at the self-raising roof built on a bullring in X`ativa [1] and tries to apply the same construction method and procedure used, on a different structure, under Norwegian conditions. A new structure is designed, with some similarities to the X`ativa roof. Multiple analyses of the new structure are done, as to assure that the design can withstand the different positions. SAP2000 is the software used to do the analyses, which encompasses examining the element forces in the truss structure and running a steel capacity check for the structure. Using these results a steel design is proposed. The method that allows the structure to self-raise is a version of the Pantadome System that applies a clever use of post-tension jacks. The forces that the jacks need to produce is found for the new structure. As the new roof is in a vulnerable position while lifting, a high safety factor is used, which the design passed. Design of details thought to be critical are suggested and drawings of the final design are presented.