The design of sustainable structures is increasingly gaining attention in the construction sector. Demountability and reuse of structures helps to reduce the environmental impact of the built environment. In case of steel-concrete composite structures, welded headed studs must be replaced by demountable shear connectors to facilitate the transition of the construction sector to a circular business model. The demountable shear connectors are embedded within large prefabricated decks and connected to steel beams using external bolts. The holes in the beam flange are designed as oversized to accommodate for geometrical and dimensional deviations of all members and to facilitate a rapid execution sequence and easy demounting. The goal of this paper is to present a methodology that can be used to predict the required bolt-to-hole clearance for various applications related to reusable composite structures. The proposed methodology is applied for a specific case of a demountable and reusable car park building. Based on the statistical characteristics of dimensional and geometrical deviations found in literature, the Monte-Carlo method is used to determine the required bolt-to-hole clearance by demanding a given probability of successful installation of the prefabricated concrete decks. The contradiction between oversized holes and composite interaction is solved by injecting the bolt-hole clearance with a (steel-reinforced) epoxy resin. The bearing resistance of the (steel-reinforced) epoxy resin is addressed based on preliminary results of creep-tests of resin-injected bolted connections.
Original languageEnglish
JournalStructures
Publication statusSubmitted - Nov 2019

    Research areas

  • Sustainability, Demountability, Composite structures, Deviation, Tolerance, Probabilistic design

ID: 55614613