ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES

Toshio Nishi; Nobuo Murota

doi:10.1007/s10118-013-1217-8

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ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES

Special Issue: The 10th International Symposium on Polymer Physics (2012) | Updated：2023-01-03

- ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES
- ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES
- Chinese Journal of Polymer Science 2013年31卷第1期页码：50-57
- Affiliations：
  
  a.International Division, Tokyo Institute of Technology, Tokyo, Japan
  b.Department of Seismic Isolation &Vibration Control Development, Bridgestone Kanagawa, Japan
- Author bio：
  
  *Toshio Nishi, E-mail: nishi.t.ad@m.titech.ac.jp
- Funds：
- DOI：10.1007/s10118-013-1217-8
  中图分类号：
- 收稿：2012-09-17，
  
  修回：2012-10-26，
  
  录用：2012-10-31，
  
  纸质出版：2013-01
- Accepted：
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Toshio Nishi, Nobuo Murota. ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES[J]. Chinese Journal of Polymer Science, 2013,31(1):50-57.

Toshio Nishi, Nobuo Murota. ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES[J]. Chinese Journal of Polymer Science, 2013, 31(1): 50-57.
Toshio Nishi, Nobuo Murota. ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES[J]. Chinese Journal of Polymer Science, 2013,31(1):50-57. DOI： 10.1007/s10118-013-1217-8.

Toshio Nishi, Nobuo Murota. ELASTOMERIC SEISMIC-PROTECTION ISOLATORS FOR BUILDINGS AND BRIDGES[J]. Chinese Journal of Polymer Science, 2013, 31(1): 50-57. DOI： 10.1007/s10118-013-1217-8.

摘要

Abstract

A giant earthquake of magnitude 9.0 occurred in Pacific Ocean off of Tohoku District Japan on March 11

2011. The highest seismic intensity of 7 in JMA scale was recorded in Miyagi. In the Tohoku district

around 230 buildings are seismically isolated (hereafter

SI) mainly by elastomeric isolators (seismic rubber bearings). According to the official survey reports by several organizations (for example)

the records of those buildings have verified the effectiveness of the seismic isolation. The response acceleration of the SI buildings was reduced by 30% to 50% of the input ground acceleration. Additionally

the difference of the conditions inside the room between SI and the fixed-base buildings was obvious as well as the damage in main structures of the buildings. The displacements of the isolators by the earthquake were around 200 mm according to the records of the instruments. As a result

the performance of SI buildings and the elastomeric isolators in the Tohoku District — Off the Pacific Ocean Earthquake 2011 were excellent

and the efficiency of the seismic isolation was verified by the records of many buildings in wide area.

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