Background

Our research team was involved in the development of the InfraShield® Seismic Resilient Joint system. The concept started with the requirement that seismic resilient steel pipelines should be simple and efficient, i.e., easy to install and non-expensive, while safeguarding the unhindered flow of water.

The InfraShield® Seismic Resilient Joint system realizes this simple idea with a straightforward yet effective design. It is patented technology, developed by Northwest Pipe engineers in collaboration with the research team of the University of Thessaly (inventors: B. Keil and S. Karamanos). The collaboration is reflected in relevant publications.

The system builds on the proven performance of C200 steel pipe with bell-and-spigot lap-welded joints. The idea is to introduce a small projection in the pipe wall that provides even greater resilience and sustainability during a seismic or geohazard event. The steel pipe stretches and folds in a controlled manner, while protecting the joint (the bell and the weld), allowing the pipe to continue delivering life-saving water to first responders and communities after serious geohazard/seismic events.