Structural Design of Vibration Controlled Tall Building with Overhang Structure

Ishibashi, Yoji; Yoshizawa, Katsuhito; Ogawa, Ichiro; Tamari, Masatoshi; Nagayama, Kenji; Oki, Hatsuka

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자료유형: 학술저널

저자정보: Ishibashi, Yoji (Structural Engineering Department, Mitsubishi Jisho Sekkei Inc.) Yoshizawa, Katsuhito (Structural Engineering Department, Mitsubishi Jisho Sekkei Inc.) Ogawa, Ichiro (Structural Engineering Department, Mitsubishi Jisho Sekkei Inc.) Tamari, Masatoshi (Structural Engineering Department, Mitsubishi Jisho Sekkei Inc.) Nagayama, Kenji (Structural Engineering Department, Mitsubishi Jisho Sekkei Inc.) Oki, Hatsuka (Structural Engineering Department, Mitsubishi Jisho Sekkei Inc.)

저널정보: 한국초고층도시건축학회 International journal of high-rise buildings International journal of high-rise buildings 제8권 제3호

발행연도: 2019.1

수록면: 177 - 183 (7page)

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This paper describes the structural design of a 212 m tall building currently under construction in the Tokiwabashi District Redevelopment Project facing Tokyo Station. In this project there was a requirement to rationally solve many issues arising from the conditions of the redevelopment project. In particular, the following two points were considered to be important from the point of view of structural design. 1) To provide an overhang frame with the perimeter columns on the lower stories inclined, in order to enable a typical floor area that greatly exceeded the limitations of the underground structure shape. 2) To provide high grade seismic performance for the office buildings to be constructed on prime city center land. LSCVCS (Lower Stories Concentrated Vibration Control System) was proposed as the method of rationally designing the overhang frame, which is an extremely disadvantageous element in the structural scheme of the tall building with a large slenderness ratio. LSCVCS is a system to provide effective damping by arranging vibration control devices in a concentrated manner in a lower story with large story height, that produces large deformation in an earthquake. Also, the vibration control devices arranged in the lower story are limited to viscous devices, to take into consideration the residual deformation of the overhang frame after an earthquake. The results of investigations into the specific effects of the system for the seismic design are reported, including Performance-based seismic design.

#Tall buildings #Overhang #Performance-based seismic design #Damping devices #Energy absorption #Dynamic Torsional Deformation

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