  This paper presents a novel application of tensegrity systems as lightweight
and noninvasive braces for seismically resistant structures. The analyzed
braces consist of D-bar systems equipped with shape memory alloy cables with
superelastic response. These structures are able to markedly amplify the
applied longitudinal displacements in the transverse direction, thus allowing
for considerably large deformations of the SMA cables and high energy
dissipation. The mechanics and the application of tensegrity braces for the
reinforcement of anti-seismic structures are presented. A comparative study
matches the seismic response of the analyzed systems with that of devices
employing fluid viscous dampers. The results highlight the fact that D-bar
units can be profitably employed as building blocks for innovative bracing
systems, whose energy dissipation properties can easily surpass those of
conventional anti-seismic braces.
