Study on Aging Performance of Building SMA/Rubber Composite Isolation Bearing |
Received:November 23, 2023 Revised:November 23, 2023 |
DOI:10.12136/j.issn.1000-890X.2024.06.0415 |
Key Words: building isolation bearing;SMA;NBR;BIIR;aging performance;mechanical performance |
Author Name | Affiliation | E-mail | ChENG Rongbo* | Guangxi Vocational&Technical Institute of Industry | pyy98987@163.com | ZHANG Xiaoling | Guangxi Vocational&Technical Institute of Industry | | 唐荣芳 | Guangxi Vocational&Technical Institute of Industry | | TANG Rongwen | Guangxi Qiaoyi Food Processing Co.,Ltd | |
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Abstract: |
The aging performance of the building shape memory alloys(SMA)/rubber composite isolation bearings was studied.The results showed that when nitrile rubber(NBR)/brominated butyl rubber(BIIR) blend ratio was 45/55,the aging resistance of NBR/BIIR blend was the best.The hysteresis curves of the building SMA/rubber composite isolation bearing with the best NBR/BIIR blend ratio after heat aging changed little,so its horizontal mechanical performance was stable.The properties of the building SMA/rubber composite isolation bearing was affected by ultraviolet radiation and temperature,but the impact was limited,which was possible to reduce the impact of ultraviolet radiation and temperature by adding shielding materials,thereby prolong the service life of the building SMA/rubber composite isolation bearing. |
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