Proposal for an Efficient Damping System for High-Rise Buildings in Major Earthquakes
Katsuhide Murakami, Masato Ishii, Kentaroh Miyazaki, and Yasuhiro Tsuneki
Engineering Department, Structural Engineering Division, Nikken Sekkei Ltd.
2-18-3 Iidabashi, Chiyoda-ku, Tokyo, Japan
Recent vibration resistant designs for buildings in Japan often adopt a vibration control structure with dampers arranged in the framework. Generally, the dampers are arranged in the building’s core in a geometry that works most effectively to protect against story shearing deformation. It is already known, however, that the above-mentioned arrangement of dampers does not provide good damping effects for the upper stories of high-rise buildings with large aspect ratios, because the protection mechanism is designed to decrease the shearing deformation components of the building’s horizontal deformation caused by its horizontal loads.
A new type of dampers, called force-restricted tuned viscous mass dampers (FRTVMD), has been recently developed for such circumstances, amplifying the deformation of viscous dampers with their tuned mass effects. This paper, therefore, first presents a tuned mass damper (TMD) system, effective for high-rise buildings with large aspect ratios against great earthquakes, and then proposes a new vibration control structural system capable of generating better damping effects with FRTVMD. In addition, we review its characteristics and effects by analyzing its vibration response, as well as verify that a combined use of such vibration control structural systems will generate far greater damping effects than an individual system.
-  B. S. Smith and I. Salim, “Parameter study of outrigger-braced tall building structures,” Journal of the Structural Division, Vol.107, No.10, pp. 2001-2014, 1981.
-  R. J. Smith and M. R. Willford, “The damped outrigger concept for tall buildings,” The Structural Design of Tall and Special Buildings, Vol.16, No.4, pp. 501-517, doi:10.1002/tal.413, 2007.
-  N. Inoue and K. Ikago, “Design of Buildings for Displacement Control,” Maruzen Publishing Co., Ltd., Japan, 2012.
-  H. Kida, K. Ikago, and N. Inoue, “Applicability of Force-Restricted Tuned Viscous Mass Dampers to High-Rise Buildings Subjected to Long-Period Ground Motions,” 15th World Conference on Earthquake Engineering, Lisbon, Portugal, Paper ID 0138, 2014.
-  M. Ishii, H. Kazama, K. Miyazaki, and K. Murakami, “Application of Tuned Viscous Mass Damper to Super-High-Rise Buildings,” 6th World Conference of the International Association for Structural Control and Monitoring (6WCSCM), Barcelona, Spain, 2014.
-  The Research Consortium of the Chubu Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism et al., “Development of synthetic bedrock ground motions for seismic retrofitting considering regional characteristics in the Sanno-Maru district, Nagoya City,” 2004 (in Japanese).
-  K. Miyazaki, M. Ishii, H. Kazama, and K. Murakami, “Robustness of Tuned Viscous Mass Damper Seismic Control system Considering Variation of the Damper Properties,” 2013 Summaries of Technical Papers of Annual Meeting, Architectural Institute of Japan, Hokkaido, Japan, Structure-2, pp. 985-986. 2013.