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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 TEMPERATURE MEASUREMENT OF RUBBER BRIDGE BEARING EXPOSED TO SOLAR RADIATION FOR AGING ESTIMATION

http://hdl.handle.net/2237/18875
6153903d-b0df-46a8-9983-0f0a5a96bedc
名前 / ファイル ライセンス アクション
B-131.pdf B-131.pdf (1.6 MB)
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

WEKO 50129

Ohkura, Shinya

Search repository
Paramashanti

× Paramashanti

WEKO 50130

Paramashanti

Search repository
Kitane, Yasuo

× Kitane, Yasuo

WEKO 50131

Kitane, Yasuo

Search repository
Itoh, Yoshito

× Itoh, Yoshito

WEKO 50132

Itoh, Yoshito

Search repository
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.
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
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 2011-06
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
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