The Building Code of Japan (the Building Standard Law of Japan) has been changed from the former prescriptive type into a performance-based type in June, 2000. This paper presents the evaluation procedures for seismic performance of seismically isolated buildings against major earthquake motions newly introduced to the Building Code of Japan in October, 2000. The evaluation procedures apply the equivalent single-degree-of-freedom (ESDOF) system, equivalent linearization and response spectrum analysis. The basic concept of seismic design spectra for major earthquake motions is (1) basic design spectra defined at the engineering bedrock, and (2) evaluation of site response from geotechnical data of surface soil layers. The principle of evaluation procedures is that the predicted response values should not exceed estimated limit values. The evaluation criteria of each portion of a building are (1) the isolation system shall be designed so that the maximum response displacement does not exceed the design limit displacement, and (2) the structure above the isolation system and the foundation and structural elements below the isolation system shall be designed so that the working stress does not exceed the allowable stress. The scope of application of the evaluation procedures is (1) buildings not exceeding 60 meters in height, and (2) base isolation buildings on the soil layers excluding very soft soils.
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e-mail: midori@kenken.go.jp
e-mail: iiba@kenken.go.jp
e-mail: koshika@krc.kajima.co.jp
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February 2004
Technical Papers
Seismic Performance Evaluation of Seismically Isolated Buildings Introduced to the Building Code of Japan
Mitsumasa Midorikawa,
e-mail: midori@kenken.go.jp
Mitsumasa Midorikawa
Building Research Institute, 1 Tachihara, Tsukuba, Ibaraki, 305-0802 Japan
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Masanori Iiba,
e-mail: iiba@kenken.go.jp
Masanori Iiba
Building Research Institute, 1 Tachihara, Tsukuba, Ibaraki, 305-0802 Japan
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Norihide Koshika
e-mail: koshika@krc.kajima.co.jp
Norihide Koshika
Kajima Corporation, 6-5-30, Akasaka, Minato-ku, Tokyo, 107-8502 Japan
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Mitsumasa Midorikawa
Building Research Institute, 1 Tachihara, Tsukuba, Ibaraki, 305-0802 Japan
e-mail: midori@kenken.go.jp
Masanori Iiba
Building Research Institute, 1 Tachihara, Tsukuba, Ibaraki, 305-0802 Japan
e-mail: iiba@kenken.go.jp
Norihide Koshika
Kajima Corporation, 6-5-30, Akasaka, Minato-ku, Tokyo, 107-8502 Japan
e-mail: koshika@krc.kajima.co.jp
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division March 30, 2003; revision received June 25, 2003. Associate Editor: G. C. Slagis.
J. Pressure Vessel Technol. Feb 2004, 126(1): 18-24 (7 pages)
Published Online: February 26, 2004
Article history
Received:
March 30, 2003
Revised:
June 25, 2003
Online:
February 26, 2004
Citation
Midorikawa, M., Iiba, M., and Koshika, N. (February 26, 2004). "Seismic Performance Evaluation of Seismically Isolated Buildings Introduced to the Building Code of Japan ." ASME. J. Pressure Vessel Technol. February 2004; 126(1): 18–24. https://doi.org/10.1115/1.1638390
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