Innovative Interlocking Connection System For Mediumrise Timber Modular Structures

Cross Laminated Timber Modular Construction (CLTMC) represents a cutting-edge advancement in the construction industry, merging the ecological benefits of timber with the streamlined processes of modular construction. This innovative approach offers a sustainable alternative to conventional construction methods, promising significant reductions in environmental impact and improvements in building efficiency. Despite these advantages, recent research has identified critical inefficiencies within existing CLTMC connection systems, particularly concerning their mechanical performance, installation complexity, and overall sustainability. These inefficiencies pose significant challenges to the broader adoption and development of CLTMC technology. This thesis addresses these challenges by introducing an innovative sliding and stacking installation method for CLT modules. Central to this method is a novel, damage-controlled, continuous interlocking connection system designed to enhance the efficiency of module assembly while reducing onsite labour demands. The proposed connection system was rigorously evaluated through a combination of experimental and numerical analyses. This comprehensive evaluation included local-scale testing to assess immediate translational mechanical properties, parametric studies with validated numerical models to explore the influence of various design parameters, and macro-scale shear wall simulations to evaluate performance under realistic loading conditions. The results of these analyses demonstrate that the proposed connections offer satisfactory stiffness, strength, and deformation control effect. These connections effectively mitigate damage to both timber and fasteners, thereby enhancing the overall durability of the construction. Additionally, the research presents a robust design framework for CLTMC connections, providing detailed guidelines for implementation in real-world projects. This framework emphasises not only the technical performance but also the practical aspects of ...