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Development of the core‐suspended isolation system
Author(s) -
Nakamura Yutaka,
Saruta Masaaki,
Wada Akira,
Takeuchi Toru,
Hikone Shigeru,
Takahashi Teiichi
Publication year - 2010
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.1036
Subject(s) - truss , structural engineering , seismic isolation , pendulum , engineering , isolation (microbiology) , mechanism (biology) , core (optical fiber) , earthquake shaking table , bearing (navigation) , base isolation , natural rubber , vibration isolation , geotechnical engineering , mechanical engineering , computer science , vibration , materials science , physics , telecommunications , microbiology and biotechnology , quantum mechanics , frame (networking) , artificial intelligence , composite material , biology
A new type of seismic isolation system—called the core‐suspended isolation (CSI) system—has been developed and first building application recently completed. The CSI system consists of a reinforced concrete core on top of which a seismic isolation mechanism composed of a double layer of inclined rubber bearings is installed to create a pendulum isolation mechanism. A multi‐level structure is then suspended from a hat‐truss or an umbrella girder constructed on the seismic isolation mechanism. In this paper, the mechanics of the CSI system are described, followed by a discussion of results of shaking table tests and quasi‐static loading tests of rubber bearings with rotated flanges, and a description of the first building constructed utilizing the CSI system, located in Tokyo, Japan. Copyright © 2010 John Wiley & Sons, Ltd.
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