Int. J. Advanced Structures & Geotechnical Engineering
ISSN 2319-5347, ISI Impact Factor: 0.763
VOLUME 03 NO. 02 APRIL 2014:
Title:
Experimental Investigation on the Behaviour of
CHS Short Columns Strengthened using FRP Composites
under Compression
Authors: M. C. Sundarraja,
B. Shanmugavalli
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 and to develop or predict the suitable
wrapping scheme of FRP to enhance the structural
behavior of it. It is proposed to use mild steel tubes
and carbon fiber used as external material. Experiments
will be undertaken until failure to fully understand the
influence of FRP characteristics on the compressive
behavior of CHS tubes.
Keywords:
Axial Compression, Circular Hollow Sections,
FRP, Local Buckling, Strengthening
Page No: 91-97