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JDR Vol.3 No.6 pp. 479-502
(2008)
doi: 10.20965/jdr.2008.p0479

Paper:

The Next Generation of Seismic Isolation
Going Beyond Seismic Design Dominated by Earthquakes

Mitsuo Miyazaki

Dynamic Design Inc., ISE Building 3F, 1-16 Sumiyoshi-cho, Shinjuku-ku, Tokyo, Japan

Received:
July 11, 2008
Accepted:
August 19, 2008
Published:
December 1, 2008
Keywords:
seismic isolation, seismic design, response spectrum, strong earthquake ground motion, long period structure
Abstract

Seismic isolation can provide superior building safety and dynamic response during strong earthquakes, however, performance is only assured below the design earthquake intensity level. This paper opens with a study of observed strong, near-source ground motions and long-period earthquake waves proposed by researchers. Through the examination of a widerange of earthquake response and input energy spectra, up to a period of 100 seconds, the most suitable range of damping values and isolation periods are found. The optimal period range is further confirmed by evaluating earthquake-wave amplification features during propagation from bedrock to the ground surface. Three types of next-generation seismic isolation systems are proposed along with new parameters to evaluate the dynamic response of seismically isolated structures. By comparing the dynamic response performance of four isolation systems, including a “conventional” 4-second period system, the superior seismic performance of the three next-generation isolation systems is confirmed. The paper shows the direction for a new generation of seismically isolated structures, with periods exceeding 10 seconds, and which minimize the elastic strain energy stored in the structure. Seismically isolated structures possessing these properties will survive strong earthquake input regardless of the uncertainty inherent in earthquake ground motions.

Cite this article as:
M. Miyazaki, “The Next Generation of Seismic Isolation
Going Beyond Seismic Design Dominated by Earthquakes,” J. Disaster Res., Vol.3, No.6, pp. 479-502, 2008.
Data files:
References
    [1] L. Herbert-Gustar and P. Nott, "John Milne, Father of Modern Seismology," Paul Norbury Publications, Ltd., 1980 (Japanese edition, Nippon-housoh Shuppan kyokai, Feb., 1982).
    [2] L. M. Megget, "The Design and Construction of a Base-Isolated Concrete Frame Building in Wellington, New Zealand," Proc., 8th. WCEE, San Francisco, USA, 1984.
    [3] "Seismically Isolated Building (Technology Developments and Earthquake Observation Results)," Building Center of Japan, Nov., 1992.
    [4] "Sumitomo Seismic Isolation Method using Lead Rubber Bearings," Technical Report of Seismic Isolation Committee, Building Center of Japan, Dec., 1985.
    [5] M. Miyazaki et al., "Design and Its Performance Verification of a Base Isolated Building using Lead Rubber Bearings in Japan," Proc., 9th. WCEE, Kyoto, Japan, 1988.
    [6] I. G. Buckle, et al., "Seismic Base Isolation Using Lead-Rubber Bearings," Dynamic Isolation Systems, Inc., 1983.
    [7] I. G. Buckle and R. L. Mayes, "Seismic Isolation: History, Application, and Performance . AWorld View," Earthquake Spectra, EERI, Vol.6, No.2, pp. 161-201, 1990.
    [8] R. I. Skinner, W. H. Robinson, and G. H.McVerry, "An Introduction to Seismic Isolation," John Wiley & Sons, 1993.
    [9] H. Akiyama, "Earthquake Resistant Design to meet to Diversified Performance," Journal of Structural and Construction Engineering (Transactions of AIJ), Architectural Institute of Japan, Vol.472, pp. 85-90, June, 1995.
    [10] M. Takayama et al., supervised by H. Tada, "The Way to 4-Seconds Seismic Isolation," Rikoh-Tosho, pp. 14-19, Aug., 1997.
    [11] "Structural Response and Performance for Long Period Seismic Ground Motions," Architectural Institute of Japan, Chap.II and Sec.III-6, Dec., 2007.
    [12] Simposium "How to Design Buildings against Inland Crustal Earthquakes in Osaka City," Kinki-branch, Architectural Institute of Japan, Mar., 2008.
    [13] M. Miyazaki et al., "Can Seismic Isolation Meet the Extreme Demands of Near-Source Ground Motions?" No.28 Ground Motion Symposium, Architectural Institute of Japan, Nov., 2000.
    [14] H. Akiyama, "Earthquake-Resistant Design Method for Buildings based on Energy Balance," Gihodo-Syuppan, Nov., 1999.
    [15] H. Akiyama, "Earthquake-Resistant Ultimate Design for Buildings," Tokyo-daigaku-Syuppankai, Sept., 1980.
    [16] Y. Oota and H. Kagami, "Ultimate Values of Period and Amplitude on Seismic Input Motions in Relation to a Large-Scale Structure," Journal of Structural and Construction Engineering (Transactions of AIJ), Architectural Institute of Japan, Vol.249, pp. 53-60, Nov., 1976.
    [17] K. Seo, "Can Design Input Earthquake Motions be Defined Considering Site Ground Characteristics ?" The Kentiku Gijutsu, pp. 142-147, July, 1999.
    [18] K. Seo et al., "Present Situation and Future Prospects on Design Input Earthquake Motions for Tall Buildings and Base-Isolated Buildings," AIJ Journal of Technology and Design, No.15, pp. 77-82, Jun., 2002.
    [19] Y. Oosaki, "New . Introduction to Spectrum Analysis of Earthquake Ground Motions," Kajima-Publishing Co., May, 1994.
    [20] M. D. Trifunac et al., "Correction for Misalignment and Cross Axis Sensitivity of Strong Earthquake Motion recorded by SMA-1 Accelerographs," University of Southern California, Dept. of Civil Engineering, Report No.CE95-06, Aug. 1995.
    [21] "Strong-Motion Earthquake Accelerograms Digitized and Plotted Data," Volume II Corrected Accelerograms and Integrated Ground Velocity and Displacement Curves, Part A . Accelerograms IIA001 through IIA020, EERL 71-50, California Institute of Technology, Earthquake Engineering Research Laboratory.
    [22] A. G. Brady et al., "Seismic Engineering Data Report The Imperial Valley Earthquake, October 15, 1979 Digitization and Processing of Accelerograph Records," Open File Report 80-703, United States Department of the Interior Geological Survey, April, 1980.

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