Research and development in connector systems for Very Large Floating Structures

In recent years, Very Large Floating Structures (VLFS) technology has attracted much attention for its sustainable and eco-friendly approach in creating land from the sea. Owing to the massive size, VLFS are usually fabricated as a number of floating modules in shipyards, towed to site and connected on sea. To ensure the functionality of such connected VLFS, effective connector systems are essential. The connector system must address issues related to the relative motion between adjacent modules and be able to sustain forces as a result of wave motion. This paper presents a critical review on the research and development in connector systems for modularized VLFS. Various design concepts for connector systems are first categorized and their working principles outlined. Research studies on hydroelastic analysis of VLFS and the effectiveness of connector systems in reducing the hydroelastic responses and internal stress resultants in connectors are also reviewed. In addition, potential technical challenges on the determination of connector stiffness in practical designs are discussed. Finally, some recommendations and suggestions for future practice are provided.