Experimental research on mechanical properties of high damping thick rubber bearings

被引：0
|
作者：
Kuang, Cheng-Gang [1 ]
Tan, Ping [1 ]
Chen, Mu-Feng [2 ]
Li, Zhi-Xiang [3 ]
Luo, Hao-Jie [4 ]
机构：
[1] School of Civil Engineering, Guangzhou University, Guangzhou
[2] School of Civil Engineering, Guangzhou Institude of Science and Technology, Guangzhou
[3] Zhen’an Technology Co., Ltd., Kunming
[4] Shanghai Xinlan Real Estate Development Co., Ltd., Shanghai
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2024年 / 37卷 / 09期
关键词：
compressive stress correlation; experimental research; high damping thick rubber bearing; mechanical properties; shear strain correlation;
D O I：
10.16385/j.cnki.issn.1004-4523.2024.09.015
中图分类号：
学科分类号：
摘要：
In order to explore the mechanical properties of high-damping thick-layer rubber bearings, this paper studies the force characteristics of horizontal shear and vertical compression of high-damping thick-layer rubber bearings under vertical compressive stress. A model considering horizontal shear deformation is established, and a vertical stiffness correction theory is proposed based on compressive stress changes. To verify the accuracy of the theoretical model, three types of high-damping thick-layer rubber bearings with different first shape coefficients were designed for horizontal quasi-static shear and vertical compression tests. The results show that the equivalent horizontal stiffness and equivalent damping ratio of the high-damping thick-layer rubber bearing are changed by the restraint effect of the internal steel plate. As the vertical compressive stress increases, the horizontal equivalent stiffness gradually decreases. In the vertical compression test, as the vertical pressure increases, the vertical compressive stiffness presents nonlinear strengthening characteristics. Through the comparative analysis of theoretical and experimental results, it can be seen that the mechanical model of horizontal shear deformation constructed in this paper can better describe the mechanical properties of high-damping thick-layer rubber bearing in horizontal shear, and the vertical stiffness correction theory can accurately calculate its vertical stiffness. The deviations from the test results under different working conditions are all within 5%. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：1584 / 1592
页数：8
相关论文
共 17 条
  • [1] Kelly J M., Earthquake-Resistant Design with Rubber, (1993)
  • [2] Xue Yantao, Status and application of base-isolation technique of buildings, Building Structure, 41, 11, pp. 82-87, (2011)
  • [3] Ge Qingzi, Yang Yijian, Dai Kaoshan, Et al., Review of mechanical properties of high damping rubber bearing, Building Structure, 52, 12, pp. 70-79, (2022)
  • [4] Zheng Jie, Gu Ranxing, Jia Junfeng, Et al., Mechanical properties of high damping rubber isolation bearings and its application in bridge engineering, Journal of Institute of Disaster Prevention, 24, 2, pp. 1-15, (2022)
  • [5] Chen Yanjiang, Guo Kaimin, Li Yong, Et al., Behavior of high damping seismic isolation rubber bearings for bridges, Journal of Vibration and Shock, 34, 9, pp. 136-140, (2015)
  • [6] Wei Wei, Yuan Yong, Tan Ping, Et al., A rate-dependent constitutive model of high damping rubber bearings considering the influence of compressive load and its effect on the seismic response, Chinese Civil Engineering Journal, 53, 2, pp. 23-32, (2020)
  • [7] Lei Tuo, Zhang Yongwang, Yang Yongrui, Et al., Composite material preparation and properties research of high damping isolation bearing, Chinese Civil Engineering Journal, 51, pp. 1-7, (2018)
  • [8] Shen Chaoyong, Zhou Fulin, Cui Jie, Et al., Dependency test research of mechanical performance of HDR and its parameter value analysis, Earthquake Engineering and Engineering Dynamics, 32, 6, pp. 95-103, (2012)
  • [9] Newland D E, Hunt H E M., Isolation of buildings from ground vibration:a review of recent progress[J], Proceedings of the Institution of Mechanical Engineers. Part C:Journal of Mechanical Engineering Science, 205, 1, pp. 39-52, (1991)
  • [10] Li Jichao, Shang Qingxue, Luo Qingyu, Et al., Tests for mechanical performance of thick rubber bearings, Journal of Vibration and Shock, 38, 9, pp. 157-165, (2019)
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