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author:

Lin, K. (Lin, K..) [1] | Xu, Y.-L. (Xu, Y.-L..) [2] | Lu, X. (Lu, X..) [3] | Guan, Z. (Guan, Z..) [4] | Li, J. (Li, J..) [5]

Indexed by:

Scopus

Abstract:

Accurate finite element models play significant roles in the design, health monitoring and life-cycle maintenance of long-span bridges. However, due to uncertainties involved in finite element modelling, updating of the finite element model to best represent the real bridge is inevitable. This is particularly true after a long-span bridge experiences a moderate or severe earthquake and suffers some damage. This study thus proposes a time history analysis-based nonlinear finite element model updating method for long-span cable-stayed bridges. Special efforts are made to (1) establish the response time history-based objective functions and associated acceptance criteria, (2) conduct comprehensive sensitivity analyses to select appropriate nonlinear updating parameters and (3) develop a highly efficient cluster computing-aided optimization algorithm. A scaled structure of the Sutong cable-stayed bridge in China is adopted as a case study. Three nonlinear test cases performed in the shake table tests of the scaled bridge are used to validate the feasibility and accuracy of the proposed method. A good agreement is observed between the simulated response time histories and the measured response time histories for the scaled bridge under both moderate and strong ground motions. The proposed method could provide an accurate nonlinear finite element model for better performance assessment, damage detection and life-cycle maintenance of long-span cable-stayed bridges. © The Author(s) 2020.

Keyword:

long-span cable-stayed bridge; Nonlinear finite element model updating; particle swarm optimization; shake table test; time history analysis

Community:

  • [ 1 ] [Lin, K.]Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
  • [ 2 ] [Lin, K.]College of Civil Engineering, Fuzhou University, Fuzhou, China
  • [ 3 ] [Xu, Y.-L.]Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
  • [ 4 ] [Lu, X.]Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Department of Civil Engineering, Tsinghua University, Beijing, China
  • [ 5 ] [Guan, Z.]Department of Bridge Engineering, Tongji University, Shanghai, China
  • [ 6 ] [Li, J.]Department of Bridge Engineering, Tongji University, Shanghai, China

Reprint 's Address:

  • [Xu, Y.-L.]Department of Civil and Environmental Engineering, The Hong Kong Polytechnic UniversityHong Kong

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Source :

Structural Health Monitoring

ISSN: 1475-9217

Year: 2020

5 . 9 2 9

JCR@2020

5 . 7 0 0

JCR@2023

ESI HC Threshold:132

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 27

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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