Abstract :
The use of hollow steel structures is increasing rapidly around the world due to the many advances in construction technologies. Developments of mega structures demand hollow sections that possess high-strength, light-weight and sufficient ductility. However, the behavior of these sections is characterized by a range of buckling modes (local and overall buckling). These buckling problems lead to strength reduction and they can be eliminated or delayed by discovering new technologies. Existing methods of retrofitting utilize steel plates that are bolted or welded to the structure. However, some drawbacks are allied with those methods. As an alternative, composite system has emerged as an attractive strengthening technique for steel structures. The advanced properties of FRP materials make them well promising for strengthening of steel structures. The main objective of this investigation is to assess the feasibility of strengthening circular hollow steel (CHS) tubular sections with FRP
Keyword :
Axial Compression, Circular Hollow Sections, FRP, Local Buckling, Strengthening