Anchorage systems of CFRP cables in cable structures-A review

Presenting many excellent material properties, unidirectional carbon fiber reinforced polymer (CFRP) has been considered as a great potential alternative to steel cables in cable structures. However, the strength and modulus perpendicular to the fiber direction of CFRP cable are significantly lower than those that are parallel to the fiber direction, which causes difficulty in anchoring CFRP cables. Therefore, anchoring is a critical problem in applying CFRP cables in cable structures. In this study, several available anchorage systems for prestressed CFRP cables are summarized in terms of design concept, anchoring mechanism and performance, and numerical simulation and mathematical methods. Although certain anchorage systems have been specially developed for prestressed concrete structures, these applications have provided meaningful experience for the development of anchorage systems for CFRP cable structures, especially the cable roofs and facades. Next, new research areas of CFRP cable anchorage systems in cable structures are introduced. Finally, the research and application status of CFRP cable structures are discussed based on three viewpoints, including CFRP cables, anchorage systems and different types of cable structures. A series of potential future research activities on anchorage systems in CFRP cable structures are suggested for promotion of the application of CFRP cables in cable structures.