Title:
Active Strengthening with Post-Tensioned CFRP Tendons
Author(s):
Erblina Vokshi
Publication:
Web Session
Volume:
ws_S24_EriVokshi.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/24/2024
Abstract:
External post-tensioning of structures is a known and understood strengthening method. Over the past twenty years, the use of externally bonded FRP, including pre-cured CFRP plates, has been widely adopted as an alternative strengthening solution to mechanically bonded steel plates. FRP materials are light, easy to deliver on jobsites, and corrosion resistant. Their strength utilization, however, is limited to the bond strength between the substrate and the FRP. External post-tensioning of CFRP plates allows for an excellent use of the material properties by introducing a post-tensioning load to a structure via two concentrated anchors. This type of CFRP system has been used for strengthening of bridges, buildings, caissons, tanks. This presentation will describe successful installation of external post-tensioned FRP systems, anchoring methods, and design considerations.