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LONG-TERM TEMPERATURE MEASUREMENT OF RUBBER BRIDGE BEARING EXPOSED TO SOLAR RADIATION FOR AGING ESTIMATION
http://hdl.handle.net/2237/18875
http://hdl.handle.net/2237/188756153903d-b0df-46a8-9983-0f0a5a96bedc
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
B-131.pdf (1.6 MB)
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| 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 TEMPERATURE MEASUREMENT OF RUBBER BRIDGE BEARING EXPOSED TO SOLAR RADIATION FOR AGING ESTIMATION | |||||
| 言語 | en | |||||
| 著者 |
Ohkura, Shinya
× Ohkura, Shinya× Paramashanti× Kitane, Yasuo× Itoh, Yoshito |
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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 | rubber bridge bearing | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | solar radiation | |||||
| 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 | temperature | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | aging | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Rubber bridge bearings have been used nationwide in Japan after the Hyogo-ken Nanbu earthquake in 1995. The equivalent shear stiffness of a rubber bridge bearing increases due to aging of rubber. It is currently assumed in the long-term performance prediction of rubber bridge bearings that rubber in the bearing has the same temperature as its surrounding ambient temperature because rubber bridge bearings are usually in the shadow as they are installed between the superstructure and the pier. However, in the actual environment, there are many bearings exposed to solar radiation that causes bearing temperature to increase. Since thermal oxidation is one of the major deterioration factors for rubber, temperature has a significant influence on the deterioration process of rubber in a bridge bearing. To accurately estimate a degree of rubber deterioration, the increase of bearing temperature due to solar radiation is necessary to be evaluated. To understand the solar radiation effect on long-term performance of rubber bridge bearing, internal bearing temperature, external bearing temperature, and global solar radiation were measured for one year for a bearing installed in outside environments in this study. Based on the measured data, an empirical relationship between solar radiation and the internal bearing temperature was obtained. In addition, the long-term increase of the equivalent shear stiffness of a rubber bridge bearing due to aging was estimated by including solar radiation effect on bearing temperature. The difference of 3% in the change of equivalent shear stiffness was found whether or not the effect of solar radiation was included. | |||||
| 言語 | en | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 4th International Conference on Advances in Experimental Structural Engineering, Ispra, Lombardy, Italy, June 29-30, 2011 | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | 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 2011-06 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/18875 | |||||
| 識別子タイプ | HDL | |||||
