Fatigue failure of welded connections at orthotropic bridges
Orthotropic decks were applied to the long span bridges after World War II due to several advantages, such as light weight, high strength, few deck joints, durability, rapid construction, life-cycle economy. The fatigue problem of orthotropic decks was realized twenty years ago since fatigue failu...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2009-07-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero9/numero_9_art_11.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841562276909285376 |
|---|---|
| author | D. Abruzzese Z.H. Qian |
| author_facet | D. Abruzzese Z.H. Qian |
| author_sort | D. Abruzzese |
| collection | DOAJ |
| description | Orthotropic decks were applied to the long span bridges after World War II due to several advantages, such as light weight, high strength, few deck joints, durability, rapid construction, life-cycle economy. The fatigue problem of orthotropic decks was realized twenty years ago since fatigue failure was found. In the past two decades large amount of studies and investigations were carried out and fruitful achievements were obtained. It was found that most of the fatigue cracks were occurred at the welded connection details, such as rib-to-deck plate, rib-to-diaphragm, and rib-to-diaphragm-to-deck plate (RDDP). These connections are sensitive to fatigue cracking due to high concentrated stress and residual stress at welded connections. In this paper practical fatigue failure cases at the welded connections, ease to occur fatigue cracking, are presented, and analyzed through a numerical modeling of orthotropic deck via FE (finite element) software. Furthermore, the improvement technologies of fatigue are also discussed. The results of the analysis can be contributed to the evaluation of the fatigue design for the orthotropic deck. |
| format | Article |
| id | doaj-art-df70e64f82a743589539bc8f62039210 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2009-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-df70e64f82a743589539bc8f620392102025-01-03T01:03:17ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932009-07-0139105112Fatigue failure of welded connections at orthotropic bridgesD. AbruzzeseZ.H. QianOrthotropic decks were applied to the long span bridges after World War II due to several advantages, such as light weight, high strength, few deck joints, durability, rapid construction, life-cycle economy. The fatigue problem of orthotropic decks was realized twenty years ago since fatigue failure was found. In the past two decades large amount of studies and investigations were carried out and fruitful achievements were obtained. It was found that most of the fatigue cracks were occurred at the welded connection details, such as rib-to-deck plate, rib-to-diaphragm, and rib-to-diaphragm-to-deck plate (RDDP). These connections are sensitive to fatigue cracking due to high concentrated stress and residual stress at welded connections. In this paper practical fatigue failure cases at the welded connections, ease to occur fatigue cracking, are presented, and analyzed through a numerical modeling of orthotropic deck via FE (finite element) software. Furthermore, the improvement technologies of fatigue are also discussed. The results of the analysis can be contributed to the evaluation of the fatigue design for the orthotropic deck.http://www.gruppofrattura.it/pdf/rivista/numero9/numero_9_art_11.pdfFatigue failureWelded connectionOrthotropic deckNumerical modelingRib-to-deck plate connection. |
| spellingShingle | D. Abruzzese Z.H. Qian Fatigue failure of welded connections at orthotropic bridges Fracture and Structural Integrity Fatigue failure Welded connection Orthotropic deck Numerical modeling Rib-to-deck plate connection. |
| title | Fatigue failure of welded connections at orthotropic bridges |
| title_full | Fatigue failure of welded connections at orthotropic bridges |
| title_fullStr | Fatigue failure of welded connections at orthotropic bridges |
| title_full_unstemmed | Fatigue failure of welded connections at orthotropic bridges |
| title_short | Fatigue failure of welded connections at orthotropic bridges |
| title_sort | fatigue failure of welded connections at orthotropic bridges |
| topic | Fatigue failure Welded connection Orthotropic deck Numerical modeling Rib-to-deck plate connection. |
| url | http://www.gruppofrattura.it/pdf/rivista/numero9/numero_9_art_11.pdf |
| work_keys_str_mv | AT dabruzzese fatiguefailureofweldedconnectionsatorthotropicbridges AT zhqian fatiguefailureofweldedconnectionsatorthotropicbridges |