Seismic protection of lap-spliced RC columns using SMA wire jackets

This study used two forms of shape memory alloy (SMA) wires, nickel–titanium–niobium (NiTiNb) and nickle–titatanium (NiTi), to retrofit reinforced concrete (RC) columns with lap splices. NiTiNb shape memory alloys are considered to show a wider temperature window compared with NiTi shape memory alloys and thus may be beneficial for applications in the area of civil structures. The goals of this study are to assess the mechanical behaviour of the two shape memory alloy wires and investigate the seismic performance of the shape memory alloy wire jackets for reinforced concrete columns with lap splices. First, the study investigates the recovery and the residual stress of NiTiNb and NiTi shape memory alloy wires. This study also evaluates the behaviour of the NiTiNb shape memory alloy wire under residual stresses. The results indicate that the shape memory alloy wire jackets show good performance for reinforced concrete columns with lap splices. The shape memory alloy wire jackets increase the ductile behavi...

[1]  Do Hyung Lee,et al.  Shape memory alloy bending bars as seismic restrainers for bridges in seismic areas , 2009 .

[2]  E. Choi,et al.  The behavior of concrete cylinders confined by shape memory alloy wires , 2008 .

[3]  Moncef L. Nehdi,et al.  Experimental Investigation on the Seismic Behavior of Beam-Column Joints Reinforced with Superelastic Shape Memory Alloys , 2008 .

[4]  Jinping Ou,et al.  Self-repairing performance of concrete beams strengthened using superelastic SMA wires in combination with adhesives released from hollow fibers , 2008 .

[5]  Mohamed H. Harajli.  Seismic Behavior of RC Columns with Bond-Critical Regions: Criteria for Bond Strengthening Using External FRP Jackets , 2008 .

[6]  Sergio F. Breña,et al.  Hysteretic Behavior of Bridge Columns with FRP-Jacketed Lap Splices Designed for Moderate Ductility Enhancement , 2007 .

[7]  Qingbin Li,et al.  Behavior of Smart Concrete Beams with Embedded Shape Memory Alloy Bundles , 2007 .

[8]  Qingbin Li,et al.  Behavior of concrete beam with embedded shape memory alloy wires , 2006 .

[9]  M. Saiidi,et al.  Exploratory Study of Seismic Response of Concrete Columns with Shape Memory Alloys Reinforcement , 2006 .

[10]  Chris P. Pantelides,et al.  SEISMIC RETROFIT OF STATE STREET BRIDGE ON INTERSTATE 80 , 2004 .

[11]  J-integral and fatigue life computations in the incremental plasticity analysis of large scale yielding by p-version of F.E.M. , 2004 .

[12]  Y. Chung,et al.  Seismic performance and damage assessment of reinforced concrete bridge piers with lap-spliced longitudinal steels , 2004 .

[13]  Reginald DesRoches,et al.  CYCLIC PROPERTIES OF SUPERELASTIC SHAPE MEMORY ALLOY WIRES AND BARS , 2004 .

[14]  W. Cai,et al.  Damping behavior of a Ti44Ni47Nb9 shape memory alloy , 2003 .

[15]  Toshiya Nakamura,et al.  Fundamental Deformation and Recovery Behaviors of Ni-Ti-Nb Shape Memory Alloy , 2001 .

[16]  Parviz Soroushian,et al.  Repair and Strengthening of Concrete Structures Through Application of Corrective Posttensioning Forces with Shape Memory Alloys , 2001 .

[17]  Arup K. Maji,et al.  Smart Prestressing with Shape-Memory Alloy , 1998 .

[18]  F. Seible,et al.  SEISMIC RETROFIT OF CIRCULAR BRIDGE COLUMNS FOR ENHANCED FLEXURAL PERFORMANCE , 1991 .

[19]  C. M. Wayman,et al.  Effects of deformation on the transformation hysteresis and shape memory effect in a Ni47Ti44Nb9 alloy , 1990 .

[20]  Mete A. Sozen,et al.  SUBSTITUTE-STRUCTURE METHOD FOR SEISMIC DESIGN IN R/C , 1976 .