Seismic Assessment of Arch Dams Using Fragility Curves
Abstract: In the present
paper, the IDA approach is applied to analyzing a thin high arch dam. The
parameters of Sa, PGA and PGV are used as intensity measure (IM) and the
overstressed area (OSA) is utilized as engineering demand parameter (EDP) and
then, three limit states are assigned to the considered structure using the IDA
curves. Subsequently, fragility curves are calculated and it is showed that the
PGA is a better parameter to be taken as IM. In addition, it is found that the
utilizing the proposed methodology, quantifying the qualitative limit states is
probable. At last, having the fragility curves and considering their slope in
addition to the other routine data which can be extracted from these curves,
one may be able to conclude that in what performance level the considered dam
body seems to be weak and needs retrofitting works.
Author: Vandad Kadkhodayan,
S.Meisam Aghajanzadeh, Hasan Mirzabozorg
Journal Code: jptsipilgg150037
