FE analysis of a steel bridge strengthened with CFRP laminates

A. Al-Mosawe, R. Al-Mahaidi, Dia Alwash, Xiao Lin Zhao , A. Hosseini, M. Motavalli, E. Ghafoori

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

An old steel bridge located in Melbourne, Australia, was strengthened with carbon fibrereinforced polymer (CFRP) laminates. A prestressed unbonded CFRP system was used in strengthening the bridge. A long-term wireless monitoring system was installed on the strengthened girders to monitor the strain evolution of the CFRP laminates, the temperature readings on the adhesive layer and air temperature. Short-term monitoring devices were also mounted on the girders for the purpose of on-site measurement. The on-site measurements were recorded when the bridge was subjected to a 42.5-ton loaded truck before and after strengthening. The results showed significant decreases in the bending stresses at the bottom of the girders when prestressed un-bonded CFRP laminates were used. This paper presents a linear finite element modelling of the bridge with the CFRP strengthening system. The results were validated using field measurements and a parametric study was carried out to understand the effect of change in temperature on the stress development on the steel girders. The paper also presents details of the bridge modelled with the prestressed unbonded strengthening sys-tem. The results showed good validation of the model, and the insignificant effect of the change of temperature on the prestressed strengthened girders.

Original languageEnglish
Title of host publicationBridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
EditorsHiroshi Yokota, Dan M. Frangopol
PublisherCRC Press/Balkema
Pages1424-1430
Number of pages7
ISBN (Electronic)9780429279119
ISBN (Print)9780367232788
DOIs
Publication statusPublished - Apr 2021
Externally publishedYes
Event10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020 - Sapporo, Japan
Duration: 11 Apr 202115 Apr 2021

Publication series

NameBridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020

Conference

Conference10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
Country/TerritoryJapan
CitySapporo
Period11/04/2115/04/21

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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