Abstract
Steel pipe dampers offer advantages such as a simple structure, low
cost, high energy absorption and dissipation, consistent functionality
under cyclic loading, and ductility. Dual-pipe dampers show improved
performance over single pipe dampers in terms of strength. The current
study focused on the structural performance of the dual-pipe system. The
seismic performance of steel-framed structures having 4, 8, or 16
stories with either a simple moment frame or a braced frame equipped
with pipe dampers were subjected to seismic loading and investigated
using the finite element method. The performance of the models was
examined by considering the base shear and lateral displacement of the
roof as well as the von Mises distribution. The stress distribution
caused by the plastic damage concentration increased in the pipe dampers
in the 4- and 8-story models and the base shear decreased 50% in the
4-story models equipped with a pipe damper. The results showed that, in
the 16-story models, the strength in the damping system should be
designed in accordance with the other elements. In addition, the
strength of the damping system can be increased by increasing the number
of pipes and their thickness.