| Summary: | 碩士 === 國立中央大學 === 土木工程研究所 === 82 === In addition to its easy manufacturing and installation and
economy, the Added Damping and Stiffness (ADAS) device has been
proved to be an efficient energy dissipation device in reducing
the structural responses. In this study a design procedure is
proposed for the steel structure with ADAS device made of
triangular plates (TADAS). In the proposed design procedure,
the percentage of story shear to be resisted by the TADAS
device is assumed first, denoted as a, followed by the
determination of yield displacement of TADAS device by using
the response spectrum of design earthquake and the desired
ductility for the TADAS device. With the TADAS device being
designed, the entire structure is then designed to meet the
seismic design requirements. From this study, the following
conclusions can be drawn: (1) The story shear, inter-story
displacements of the steel structure designed using the
proposed procedure can be effectively reduced, as compared with
that without TADAS device. (2) the nonlinear dynamic analysis
indicates that most of the yielding occur at TADAS devices,
resulting in yielding at only few places in the structure
during strong motion. The computed ductility for the TADAS
device compares well with the assumed value. (3) The use of
TADAS device can reduce the amount of steel used. (4) For the
top stories where the percentage of story shear resisted by the
TADAS device is less than 70% of the desired value for a, can
be designed without using TADAS.
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