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Author:

Wu, Huan (Wu, Huan.) | Wang, Zhanfei (Wang, Zhanfei.) | Zhang, Qiang (Zhang, Qiang.) | Sui, Weining (Sui, Weining.)

Indexed by:

Scopus SCIE

Abstract:

Unseating may be one of the most severe forms of damage to a bridge caused by an earthquake; such an event may lead to catastrophic span falling or collapse. A novel elastomeric bearing incorporated within steel ring restrainers (EB-SRRs) to prevent the unseating of bridges is therefore proposed. The EB-SRRs consists mainly of an elastomeric bearing in the center and multiple steel ring restrainers (SRRs) symmetrically distributed on both sides. The finite element (FE) model of the EB-SRRs is established, and its reliability is validated using data from earlier experiments. A parametric analysis of the EB-SRR performance is undertaken using the FE method. Finally, a method for the prediction of the mechanical behavior of the EB-SRRs is proposed. The results show that EB-SRRs can provide multi-level mechanical properties: compared with traditional EB, EB-SRRs has the same behavior under small horizontal load but provide a slight increase in strength and energy dissipation under moderate horizontal load and a greater increase in strength and energy dissipation under large horizontal load. The cross-section height h and cross-section width w mainly affect the ultimate bearing capacity Fu and the energy dissipation of the EB-SRRs; steel ring radius R, guide pulley diameter D, and straight part length a mainly affect the ultimate displacement delta u; the straight part length a significantly affect the activation displacement delta a. The method of predicting the force-displacement curves of the EB-SRRs proposed in this study is shown to be accurate.

Keyword:

Numerical simulation Elastomeric bearing Steel ring restrainer Predictive formulae Seismic isolation Parametric analysis

Author Community:

  • [ 1 ] [Wu, Huan]Shenyang Jianzhu Univ, Sch Transportat & Geomatics Engn, Shenyang 110168, Peoples R China
  • [ 2 ] [Wang, Zhanfei]Shenyang Jianzhu Univ, Sch Transportat & Geomatics Engn, Shenyang 110168, Peoples R China
  • [ 3 ] [Zhang, Qiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Sui, Weining]Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang 110168, Peoples R China

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Source :

STRUCTURES

ISSN: 2352-0124

Year: 2023

Volume: 52

Page: 117-130

4 . 1 0 0

JCR@2022

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 0

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