Post-tensioning: an efficient structural reinforcement system for wind structures

Wind towers are subjected to continuous vibration-induced forces throughout their operational life. Concrete and hybrid towers have emerged as an alternative to traditional steel towers, thanks to their durability, stability and vibration control. Post-tensioned concrete offers an optimal resistance and durability, while reducing instability, to both onshore and offshore wind farms. As an expert in post-tensioning systems and their application in wind structures, VSL can fully optimize their incorporation into the overall project.

For onshore projects, we provide our external post-tensioning system designed specifically for wind towers, the E-WT system, a proprietary technology that has obtained a European Technical Approval (ETA). Made of multi-strand vertical tendons, it is a versatile and reliable post-tensioning system that maximizes the use of local resources and offers maximum flexibility, allowing re-stressing and de-stressing the tendons if necessary.

We have recently supplied and installed our external post-tensioning system on Gecama and Pestriz wind farms for Nordex in Spain.