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Earthquakes and Structures
  Volume 19, Number 3, September 2020, pages 175-188

Seismic design and elastic–plastic analysis of the hengda group super high-rise office buildings
Xiaomeng Zhang, Qingying Ren, Wenting Liu, Songlin Yang and Yilun Zhou

    The Hengda Group super high-rise building in Jinan City uses the frame-core tube structural system. With a height of 238.3 m, it is above the B-level height limit of 150 m for buildings within 7-magnitude seismic fortification zones. Therefore, it is necessary to apply performance-based seismic design to this super high-rise building. In this study, response spectrum analysis and comparative analysis of the structure are conducted using two software applications. Moreover, elastic time-history analysis, seismic analysis under an intermediate earthquake, and elastic–plastic time-history analysis under rare earthquakes are performed. Based on the analysis results, corresponding strengthening measures are implemented at weaker structural locations, such as corners, wall ends connected to framed girders, and coupling beams connected to framed girders. The failure mode and failure zone of major stress components of the structure under rare earthquakes are analysed. The conclusions to this research demonstrate that weaker locations and important parts of the structure satisfy the requirements for elastic–plastic deformation in the event of rare earthquakes.
Key Words
    high-rise building beyond the cold-specificatio; elastic-plastic analysis; performance-based seismic design; frame-corewall structure; seismic calculation
China Architecture Design and Research Group, Beijing 100044, China

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