Experimental investigation and numerical analysis of a hybrid bridge isolation system utilizing bonded and unbonded laminated rubber bearings

To enhance the seismic resilience of bridges equipped with nonseismic laminated rubber bearings, a novel seismic isolation system is proposed, leveraging hybrid bonded and unbonded laminated rubber bearings. An experimental program is conducted to investigate the seismic behavior of this innovative hybrid bearing system. Cyclic loadings are applied to bonded, unbonded, and hybrid bearings to assess their force-displacement hysteretic response, energy dissipation, and restoring performance. The experimental findings reveal that unbonded rubber bearings exhibit significant energy dissipation through sliding but show limitations in restorability. Conversely, bonded bearings demonstrate superior restoring capacity but offer limited energy dissipation. The proposed hybrid bearings, combining bonded and unbonded bearings, achieve a favorable equilibrium between energy dissipation and restoring performance. Compared to individual bonded and unbonded bearings, the hybrid bearings exhibit a remarkable increase in energy dissipation by 110 % and restoring performance by 185 %. Furthermore, a numerical simulation method is proposed to accurately capture the critical hysteretic behavior of the hybrid bearings.

• Record URL:
  • https://doi.org/10.1016/j.engstruct.2024.118991
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0141029624015530
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Xiang, Nailiang
  • Huang, Jinhui
  • Xu, Hanxiang
  • Wang, Jian
  • Wu, Xiaoxue
  • Zhong, Jian
• Publication Date: 2024-12-15

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: 118991
• Serial:
  • Engineering Structures
  • Volume: 321
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0141-0296
  • Serial URL: http://www.sciencedirect.com/science/journal/01410296

Subject/Index Terms

• TRT Terms: Base isolation; Bridge bearings; Dissipation; Hysteresis; Laminates; Numerical analysis; Seismicity
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01934567
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 21 2024 5:01PM