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A platform for research: civil engineering, architecture and urbanism
Shear behaviour of post-tensioned inter-module connection for modular steel buildings
Abstract In modular steel buildings the inter-module connections are key to the successful site installation of modules and the overall structural behaviour of the assembled building. The existing connection details such as site welding typically require external access during site install, which is not always possible or practical. Post-tensioned bolted steel connections are an enticing solution because they minimise the requirement for site work, allowing for easier internal assembly. However, the existing shear force-displacement model for inter-module connections is inadequate, and the initial load-slip behaviour is not accurately predicted. In this study, a new post-tensioned bolted steel connection is proposed and the prototypes are manufactured. The shear force-displacement and load-slip behaviours are investigated experimentally. The proposed connection is shown to have good initial stiffness in shear, which can be well controlled by the parameters of preload and slip factor. In addition, numerical simulation is conducted and the influence of the preload and slip factor on the load-slip behaviour is investigated. An improved empirical model is developed, and its application is demonstrated for the proposed connection.
Highlights A new post-tensioned inter-module connection is proposed. The uniaxial shear force-slip behaviour is investigated. The effect of the slip factor, bolt preload and contact area are presented. An empirical model is developed for the initial shear force-slip behaviour. The proposed model is more accurate than the existing model.
Shear behaviour of post-tensioned inter-module connection for modular steel buildings
Abstract In modular steel buildings the inter-module connections are key to the successful site installation of modules and the overall structural behaviour of the assembled building. The existing connection details such as site welding typically require external access during site install, which is not always possible or practical. Post-tensioned bolted steel connections are an enticing solution because they minimise the requirement for site work, allowing for easier internal assembly. However, the existing shear force-displacement model for inter-module connections is inadequate, and the initial load-slip behaviour is not accurately predicted. In this study, a new post-tensioned bolted steel connection is proposed and the prototypes are manufactured. The shear force-displacement and load-slip behaviours are investigated experimentally. The proposed connection is shown to have good initial stiffness in shear, which can be well controlled by the parameters of preload and slip factor. In addition, numerical simulation is conducted and the influence of the preload and slip factor on the load-slip behaviour is investigated. An improved empirical model is developed, and its application is demonstrated for the proposed connection.
Highlights A new post-tensioned inter-module connection is proposed. The uniaxial shear force-slip behaviour is investigated. The effect of the slip factor, bolt preload and contact area are presented. An empirical model is developed for the initial shear force-slip behaviour. The proposed model is more accurate than the existing model.
Shear behaviour of post-tensioned inter-module connection for modular steel buildings
Lacey, Andrew William (author) / Chen, Wensu (author) / Hao, Hong (author) / Bi, Kaiming (author) / Tallowin, Forrest James (author)
2019-07-19
Article (Journal)
Electronic Resource
English
| Taylor & Francis Verlag | 2023
| Elsevier | 2024