ESTIMATION OF CREEP BEHAVIOR OF THICK RUBBER BEARINGS FROM 47 YEARS OBSERVATION IN AN ACTUAL BUILDING

ESTIMATION OF CREEP BEHAVIOR OF THICK RUBBER BEARINGS FROM 47 YEARS OBSERVATION IN AN ACTUAL BUILDING

47 years long creep characteristics of thick natural rubber bearings could be estimated by using the existing measured creep displacement data of an actual vibration isolation building, which was established in 1966. From the estimated creep characteristics, it was confirmed that increment rate of c...

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Veröffentlicht in:AIJ Journal of Technology and Design 2022/02/20, Vol.28(68), pp.81-84
Hauptverfasser: MASAKI, Nobuo, KATO, Kouji, YAMAMOTO, Tomohiko, MIYAGAWA, Takayuki, FUJITA, Satoshi, OKAMURA, Shigeki
Format: Artikel
Sprache:eng ; jpn
Schlagworte:
Bearings
Creep (materials)
Creep characteristic
Displacement
Natural rubber
Seismic isolation
Thick rubber bearing
Time dependence
Vibration isolation
Vibration measurement
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Zusammenfassung:47 years long creep characteristics of thick natural rubber bearings could be estimated by using the existing measured creep displacement data of an actual vibration isolation building, which was established in 1966. From the estimated creep characteristics, it was confirmed that increment rate of creep displacement is gradually decreased with time. Therefore the time dependent formula for creep recommend in JIS K6410-2:2015 was applied to the estimated creep characteristics. As the formula matched the actual creep characteristics, so it was possible to predict the creep displacement 60 years after the start of measurement using this formula.
ISSN:1341-9463
1881-8188
DOI:10.3130/aijt.28.81