Abstract：In order to establish fragility curves of high-rise RC frame-core wall structures, nine typical RC frame-core wall structures with uniform story height, different spans and earthquake fortification intensity are designed and numerically modelled. Considering the randomness of earthquake ground motions input, seismic response is obtained through nonlinear dynamic time history analysis adopting Perform-3D as the finite element software. Ultimate damage states for entire structures are defined on the basis of current seismic design code so as to the construction of fragility functions. The influence of the structural span and seismic fortification intensity are analyzed. The results show that: low seismic fortification intensity makes no apparent effect on the structure vulnerability curve, while with the increasing of the intensity the variable getting obviously; Although the span is diverse, the fragility curves are similar under the same seismic fortification intensity, which indicates the design uncertainties contribute small to the variability in structural response. Then the fragility curves of this kind of structures are derived, which can provide a reference for seismic loss estimation of city high-rise buildings.
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