1 College of Civil Engineering and Construction, East China Jiaotong University, Nanchang 330013, China 2 Zhongyu Tiexin Transportation Technology Co., Ltd., Hengshui 053000, Hebei, China
Abstract: Bridge rubber bearings achieve horizontal displacement and rotational functionality through shear deformation and non-uniform compression of the rubber layers, and the aging characteristics of the rubber material directly influence the service performance of the bearings. To quantify the time-dependent variation of performance parameters of bearing rubber materials under different aging durations, this study designed accele-rated aging conditions for rubber materials at four temperatures—70 ℃, 80 ℃, 90 ℃, and 100 ℃—to comparatively analyze the material property changes under different thermal aging treatments, and to investigate the time-dependent variation trends, quantitative expressions, and service life prediction methods of rubber properties at varying temperatures. The results show that with increasing aging, the time-dependent degradation of rubber material properties becomes significant and cannot be ignored; at the same temperature, tensile strength and elongation at break of the rubber sheets gradually decrease with aging time, while stress at specified elongation and hardness—representing the elastic modulus—exhibit a continuous increasing trend, and the higher the aging temperature, the faster these property changes occur. Besides, the service life prediction method and multi-index comprehensive evaluation method of rubber materials based on single parameter data were proposed, and the service life of rubber materials in this test was 72.1 years. The analysis and findings presented provide valuable references for practical engineering applications.
吴刚, 吴春云, 贾雷雷, 刘旭政, 吴必涛, 曾天良. 基于加速老化试验的支座橡胶材料性能退化规律及寿命预测研究[J]. 材料导报, 2026, 40(9): 24120031-7.
WU Gang, WU Chunyun, JIA Leilei, LIU Xuzheng, WU Bitao, ZENG Tianliang. Study on the Performance Degradation Law and Service Life Prediction of Rubber Materials for Bearings Based on Accelerated Aging Tests. Materials Reports, 2026, 40(9): 24120031-7.
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2026, Vol. 40 
