LONG-TERM DETERIORATION OF HIGH DAMPING RUBBER BRIDGE BEARING

In recent years, high damping rubber (HDR) bridge bearings have become widely used because of the excellent ability to provide high damping as well as flexibility. However, there are few systematic studies on the deterioration problems of HDRs during their service life, and usually the long-term per...

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Bibliographic Details
Published inSTRUCTURAL ENGINEERING / EARTHQUAKE ENGINEERING Vol. 23; no. 2; pp. 215s - 227s
Main Authors ITOH, Yoshito, GU, Haosheng, SATOH, Kazuya, YAMAMOTO, Yoshihisa
Format Journal Article
LanguageEnglish
Published Tokyo Japan Society of Civil Engineers 2006
Japan Science and Technology Agency
Subjects
deterioration
high damping rubber bearing
long-term performance
thermal oxidation
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Summary:In recent years, high damping rubber (HDR) bridge bearings have become widely used because of the excellent ability to provide high damping as well as flexibility. However, there are few systematic studies on the deterioration problems of HDRs during their service life, and usually the long-term performance was not considered in the design stage. In this research, through accelerated thermal oxidation tests on HDR blocks, the property variations inside the HDR bridge bearing are examined. A deterioration prediction model is developed to estimate the property profiles. Then using a constitutive model and carrying out FEM analysis, the behavior of a HDR bridge bearing during its lifespan is clarified. A design procedure is proposed that takes the long-term performance in the site environment into consideration.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0289-8063
1882-3424
DOI:10.2208/jsceseee.23.215s