SeaHive® Solutions to Mitigate Bridge Scour – Phase III

This is a collaborative research project conducted in partnership with Texas State University. Phases I and II of the project were conducted during AY24 and AY25. This one-year proposal is for Phase III of the three-phase project. The objective of this research project is to show a proof-of-concept of using innovative hydraulic load dissipating elements, known as SEAHIVE®. This is a modular engineered protection system composed of concrete perforated hexagonal prisms. Perforations on the side faces of the elements provide passage for water flow dissipating the energy within the system while also adding structural complexity which improves its potential for habitat creation. SEAHIVE® has been under research and development at the University of Miami (UM) for wave energy dissipation and habitat enhancement with three pilot installations completed. This UTC study investigates the performance of the SEAHIVE® system intended for mitigating bridge scour. This project has the potential to create a consortium-wide effort for implementing the SEAHIVE® system into practice and changing how we design or retrofit bridge foundations for mitigating scour. Phase I focused on externally-prestressed elements given the mass production and scaling-up advantage. Externally prestressed (by Glass FRP rovings) units were produced by the dry-cast method with the same equipment used for the production of concrete pipes. Phase II focused on the production of internally-prestressed units using a revolutionary mold system. Using this technique, it will be possible to increase production efficiency and, as importantly, manufacture units of lengths up to 24 ft. that could be necessary for installation in riverine environments.