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Structural Design of High-Rise Building in Toranomon-Azabudai Project (A Block)
Kazumasa, Okabe,Kai, Toyama,Takuya, Furuta,Jyunichi, Yamashita,Hiroki, Mukai,Takahiro, Goseki,Shingo, Masuda,Dai, Shimazaki,Yusuke, Miyagi,Yuji, Ozawa Council on Tall Building and Urban Habitat Korea 2022 International journal of high-rise buildings Vol.11 No.3
This paper explains about structural planning and structural design of the high-rise building in Toranomon-Azabudai Project (A Block) which is now under construction. The building is about 330 meters high, has 4.2 aspect ratio, and the outline of the building has shallow curve. We adopted seismic response control structure. The building is a steel rigid frame structure with braces, and it has enough stiffness to obtain its primary natural period to be less than about seven seconds, in consideration of wind response, seismic response and inhabitability for the wind shaking. In terms of business continuity plan, the building has a high seismic performance; value of story drift angle shall be 1/150 or less and members of the building remain almost undamaged while or after a large earthquake. Active mass dumper shall be installed at the top of the building to improve inhabitability while strong wind is blowing.