In assessing to some structural problems of existing high-rise buildings, it is necessary to comprehend states of that precisely. This study focuses on the components and characteristics of that, and constructs the seismic analysis model on basis of typical specifications, which is investigated by literature survey. The analysis result against long-period ground motion shows two suggestions. One is that the seismic performance of existing buildings may not be weak comparing to current buildings, and the other is that the cumulative damage of beam ends concentrates lower stories.
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