Details
| Original language | English |
|---|---|
| Title of host publication | Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks |
| Subtitle of host publication | Proceedings of the 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016 |
| Editors | Andre T. Beck, Dan M. Frangopol, Tulio Nogueira Bittencourt |
| Pages | 522-529 |
| Number of pages | 8 |
| Publication status | Published - 2016 |
| Externally published | Yes |
| Event | 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016 - Foz do Iguaçu, Brazil Duration: 26 Jun 2016 → 30 Jun 2016 |
Publication series
| Name | Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks - Proceedings of the 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016 |
|---|
Abstract
In this paper, the applicability of the constant life diagram (CLD) methodology for fatigue strengthening of metallic members is described. The CLD methodology is a method that uses the combined effect of alternating stress, mean stress and material properties to predict the material life-time under high-cycle fatigue loading. The method could be used most efficiently to improve resistance to crack initiation in ‘safe-life’ members, which is, in fact, a preventive fatigue strengthening approach. The method can be used to increase the fatigue safety margins of un-cracked metallic members. Furthermore, an innovative pre-stressed un-bonded reinforcement (PUR) system has been developed and patented. The advantages of the developed PUR system arc: applicable to unsmooth surfaces (e.g., riveted or corroded), fast on-site installation (i.e., no glue and no surface preparation), no damage on metallic member (no weld, hole or grinding) and adjustable carbon fiber-reinforced polymer (CFRP) pre-stress level. The system can be easily disassembled and removed, if necessary, which makes it suitable for historical bridges as a temporary or permanent retrofit technique. Lastly, this paper presents details about fatigue strengthening of riveted girders in a 120-ycar-old railway (wrought iron) bridge using the PUR system such that the requirements of the CLD approach arc fulfilled.
ASJC Scopus subject areas
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Engineering(all)
- Civil and Structural Engineering
Cite this
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- Apa
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Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks : Proceedings of the 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016. ed. / Andre T. Beck; Dan M. Frangopol; Tulio Nogueira Bittencourt. 2016. p. 522-529 (Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks - Proceedings of the 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Fatigue strengthening of riveted girders in a historic railway metallic bridge in Switzerland using pre-stressed un-bonded CFRP laminates
AU - Ghafoori, E.
AU - Motavalli, M.
AU - Herwig, A.
AU - Nussbaumer, A.
AU - Prinz, G. S.
AU - Fontana, M.
PY - 2016
Y1 - 2016
N2 - In this paper, the applicability of the constant life diagram (CLD) methodology for fatigue strengthening of metallic members is described. The CLD methodology is a method that uses the combined effect of alternating stress, mean stress and material properties to predict the material life-time under high-cycle fatigue loading. The method could be used most efficiently to improve resistance to crack initiation in ‘safe-life’ members, which is, in fact, a preventive fatigue strengthening approach. The method can be used to increase the fatigue safety margins of un-cracked metallic members. Furthermore, an innovative pre-stressed un-bonded reinforcement (PUR) system has been developed and patented. The advantages of the developed PUR system arc: applicable to unsmooth surfaces (e.g., riveted or corroded), fast on-site installation (i.e., no glue and no surface preparation), no damage on metallic member (no weld, hole or grinding) and adjustable carbon fiber-reinforced polymer (CFRP) pre-stress level. The system can be easily disassembled and removed, if necessary, which makes it suitable for historical bridges as a temporary or permanent retrofit technique. Lastly, this paper presents details about fatigue strengthening of riveted girders in a 120-ycar-old railway (wrought iron) bridge using the PUR system such that the requirements of the CLD approach arc fulfilled.
AB - In this paper, the applicability of the constant life diagram (CLD) methodology for fatigue strengthening of metallic members is described. The CLD methodology is a method that uses the combined effect of alternating stress, mean stress and material properties to predict the material life-time under high-cycle fatigue loading. The method could be used most efficiently to improve resistance to crack initiation in ‘safe-life’ members, which is, in fact, a preventive fatigue strengthening approach. The method can be used to increase the fatigue safety margins of un-cracked metallic members. Furthermore, an innovative pre-stressed un-bonded reinforcement (PUR) system has been developed and patented. The advantages of the developed PUR system arc: applicable to unsmooth surfaces (e.g., riveted or corroded), fast on-site installation (i.e., no glue and no surface preparation), no damage on metallic member (no weld, hole or grinding) and adjustable carbon fiber-reinforced polymer (CFRP) pre-stress level. The system can be easily disassembled and removed, if necessary, which makes it suitable for historical bridges as a temporary or permanent retrofit technique. Lastly, this paper presents details about fatigue strengthening of riveted girders in a 120-ycar-old railway (wrought iron) bridge using the PUR system such that the requirements of the CLD approach arc fulfilled.
UR - http://www.scopus.com/inward/record.url?scp=85001124970&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85001124970
SN - 9781138028517
T3 - Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks - Proceedings of the 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016
SP - 522
EP - 529
BT - Maintenance, Monitoring, Safety, Risk and Resilience of Bridges and Bridge Networks
A2 - Beck, Andre T.
A2 - Frangopol, Dan M.
A2 - Bittencourt, Tulio Nogueira
T2 - 8th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2016
Y2 - 26 June 2016 through 30 June 2016
ER -