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  1. B200 工学部/工学研究科
  2. B200e 会議資料
  3. 国際会議

LONG-TERM PERFORMANCE EVALUATION OF HIGH DAMPING RUBBER BEARINGS BY ACCELERATED THERMAL OXIDATION TEST

http://hdl.handle.net/2237/18871
5e13083e-58df-4342-b88d-d37e41a2bbc3
名前 / ファイル ライセンス アクション
B-113.pdf B-113.pdf (326.5 kB)
Item type 会議発表論文 / Conference Paper(1)
公開日 2013-11-12
タイトル
タイトル LONG-TERM PERFORMANCE EVALUATION OF HIGH DAMPING RUBBER BEARINGS BY ACCELERATED THERMAL OXIDATION TEST
言語 en
著者 Paramashanti

× Paramashanti

WEKO 50116

Paramashanti

Search repository
Itoh, Yoshito

× Itoh, Yoshito

WEKO 50117

Itoh, Yoshito

Search repository
Kitane, Yasuo

× Kitane, Yasuo

WEKO 50118

Kitane, Yasuo

Search repository
Gu, Haosheng

× Gu, Haosheng

WEKO 50119

Gu, Haosheng

Search repository
キーワード
主題Scheme Other
主題 High damping rubber bearing
キーワード
主題Scheme Other
主題 long-term performance
キーワード
主題Scheme Other
主題 accelerated exposure test
キーワード
主題Scheme Other
主題 aging
キーワード
主題Scheme Other
主題 base-isolation
抄録
内容記述タイプ Abstract
内容記述 High damping rubber (HDR) bearings are widely accepted as a base isolator in buildings and bridges in the world. It is well known that rubber materials change their properties when exposed to degradation factors including oxygen, ultraviolet, ozone, temperature, acid, and humidity. Among them, thermal oxidation is the predominant degradation factor for HDR in the built environments. In this study, based on the deterioration characteristics resulted from accelerated thermal oxidation tests of HDR bearings, a simple formula is derived to predict the variation of the equivalent shear stiffness of an HDR bearing. The long-term seismic performance of a base-isolated continuous steel bridge is evaluated by considering aging of HDR bearings. Using the simple formula, the equivalent stiffness and equivalent damping ratio of HDR bearings is calculated based on the size of bearing, an average temperature of the construction site, and various aging times up to 100 years. The results show that the equivalent shear stiffness of HDR bearing increases due to aging, which will cause the seismic force on the bridge to increase. The maximum stiffness change found in this study is about 14% of the initial stiffness. However, the most part of the change occurs soon after bearing installation.
内容記述
内容記述タイプ Other
内容記述 2nd International Conference on Advances in Experimental Structural Engineering, Tongji Univ., Shanghai, China, December 4-6, 2007
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_5794
タイプ conference paper
書誌情報
発行日 2007-12
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/18871
識別子タイプ HDL
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