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LONG-TERM PERFORMANCE EVALUATION OF HIGH DAMPING RUBBER BEARINGS BY ACCELERATED THERMAL OXIDATION TEST
http://hdl.handle.net/2237/18871
http://hdl.handle.net/2237/188715e13083e-58df-4342-b88d-d37e41a2bbc3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
B-113.pdf (326.5 kB)
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| アイテムタイプ | 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× Itoh, Yoshito× Kitane, Yasuo× Gu, Haosheng |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 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. | |||||
| 言語 | en | |||||
| 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 | en | |||||
| 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 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 書誌情報 |
発行日 2007-12 |
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| 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 | |||||
