期刊
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
卷 56, 期 6, 页码 1525-1533出版社
SCIENCE PRESS
DOI: 10.1007/s11431-013-5234-1
关键词
ground motion intensity measure; super high-rise building; time-history analysis; collapse analysis
资金
- National Science and Technology [2011BAJ09B01]
- National Nature Science Foundation of China [51222804, 51261120377]
- Tsinghua University Initiative Scientific Research Program [2012THZ02-2, 2011THZ03]
- Fok Ying Dong Education Foundation [131071]
- Twelfth Five-Year plan major projects
Ground motion intensity measure (IM) is an important part in performance-based seismic design. A reasonable and efficient IM can make the prediction of the structural seismic responses more accurate. Therefore, a more reasonable IM for super high-rise buildings is proposed in this paper. This IM takes into account the significant characteristic that higher-order vibration modes play important roles in the seismic response of super high-rise buildings, as well as the advantages of some existing IMs. The key parameter of the proposed IM is calibrated using a series of time-history analyses. The collapse simulations of two super high-rise buildings are used to discuss the suitability of the proposed IM and some other existing IMs. The results indicate that the proposed IM yields a smaller coefficient of variation for the critical collapse status than other existing IMs and performs well in reflecting the contribution of higher-order vibration modes to the structural response. Hence, the proposed IM is more applicable to seismic design for super high-rise buildings than other IMs.
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