Abstract
This paper reports a seismic assessment of ground-chimney interaction system based on the seismic response analyses of an actural chimey structure with in a 2D plane strain condition. It finds that, 1) seismic stability of aboveground structure cannot evaluate only from the degree of input acceleration, but the relationship between natural frequency of structure and dominant frequency of input seismic motion is important. That is, if natural frequency of structure and dominant frequency of input seismic motion is close, resonance of the structure causes large oscillation. Moreover, if ground liquefies, the decline in the bearing force of the ground and the consequent unevenness in the settlement of the structure causes collapse. 2) If the irregularity of geological formation was take into accout for evaluation, residual displacement of the structure increases. 3) If presence of an adjacent structure was take into account for evaluation, residual displacement of the structure increase towards each other direction which indicate that the seismic stability assessment of isolated structure with in a crowded place may calculate smaller displacement.
