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Structural Design of Mid-Story Isolated High-Rise Building - Roppongi Grand Tower

  • Nakamizo, Daiki (Structural Design Section, Structural Engineering Division, Engineering Department, Nikken Sekkei Ltd.) ;
  • Koitabashi, Yuichi (Structural Design Section, Structural Engineering Division, Engineering Department, Nikken Sekkei Ltd.)
  • Published : 2018.09.30

Abstract

Since the response reduction effect on over 200-meter-tall resulting from the seismic isolation system is smaller in general than low-rise and mid-rise buildings, mid-story isolated buildings are considered to reduce the response in the upper part above the isolation story, however, in many cases, the acceleration response just below the isolation story is likely to be the largest. This paper presents the structural design schemes, the design of the main structural frames, and the constructions of a 230-meter-tall super high-rise building with mid-story isolation mechanism integrated in Roppongi, Tokyo. Moreover, this paper shows how the architectural and structural design for integrating a mid-story isolation system in a super high-rise building has been conducted and what solutions have been derived in this project. The realization of this building indicates new possibilities for mid-story isolation design for super high-rise buildings.

Keywords

References

  1. Nakamizo, D., Asakawa, T., and Koitabashi, Y. (2017). Design Example of Mid-Story-Isolated Skyscraper with the Viscous Dampers to Reduce the Response Acceleration in Lower part of the Building, IABSE Symposium Report, 109, 3010-3017.
  2. Watanabe, K. (2014). Izumi Garden $\times$ Roppongi 3-Chome East Block Redevelopment Project -Connecting the City, Connecting the Time-. Urban Planning, 307: 78-80. (in Japanese)