A Thermo-mechanical Coupled Model of Hysteresis Behavior of HDR Bearings
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Bibliographic Details
| Author(s): |
Yuqing Tan
(Kyoto University, Uji, Kyoto, Japan)
Akira Igarashi (Kyoto University, Uji, Kyoto, Japan) Ji Dang (Saitama University, Saitama, Saitama, Japan) Takehiko Himeno (Kawakin Core-Tech Co., Ltd., Yuki, Ibaraki, Japan) Yuki Hamada (Kawakin Core-Tech Co., Ltd., Yuki, Ibaraki, Japan) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022 | ||||
| Published in: | IABSE Symposium Prague 2022 | ||||
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| Page(s): | 1574-1581 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/prague.2022.1574 | ||||
| Abstract: |
The hysteretic behavior of High Damping Rubber (HDR) bearings is significantly affected by inner temperature and hysteresis self-heating interactions, the stiffness of HDR is increased at lower inner temperature. To introduce the HDR bearings in cold earthquake prone regions, a temperature- dependent hysteresis model is of great concern. In this study, a thermo-mechanical coupled model is proposed for HDR bearings. The model parameters are identified from quasi-static loading tests at ambient temperatures of 23°C, 0°C and −20°C, and the validity of the model is discussed based on a comparison of the numerical seismic response of a bridge model using HDR bearings with the hybrid simulation result at 23°C, 0°C and −20°C. An acceptable agreement can be observed between the model and test result at the 23°C and 0°C under seismic loading conditions. |
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| Keywords: |
temperature effect restoring force model high damping rubber bearing self-heating hybrid simulation
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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