Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Protecting a five span prestressed bridge against ground deformations
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.ORCID-id: 0000-0001-8889-4237
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.ORCID-id: 0000-0002-1398-6118
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Byggkonstruktion och -produktion.
Vise andre og tillknytning
2015 (engelsk)Inngår i: IABSE Conference Geneva 2015: Structural Engineering: Providing Solutions to Global Challenges, Geneva: International Association for Bridge and Structural Engineering, 2015, s. 255-262Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

A 55 year-old, 121.5 m long, five span prestressed bridge was situated in the deformation zone close to a mine in Kiruna in northern Sweden. There was a risk for uneven ground deformations so the bridge was analyzed and monitored. Results and measures taken to ascertain the robustness of the bridge are presented.The analysis resulted in an estimate that the bridge could sustain 24 mm in uneven horizontal and 83 mm in uneven vertical displacement of the two supports of a span. To be able to sustain larger deformations, the columns of the bridge were provided with joints, where shims could be inserted to counteract the settlements. To accomplish this, each one of the 18 columns of the bridge was unloaded by help of provisional steel supports. The column was then cut and a new foot was mounted to it. This made it possible to lift each individual column with two jacks, when needed, and to adjust its height by inserting or taking away shim plates.The deformations of the bridge and the surrounding ground were monitored. The eigenmodes of the bridge were studied with accelerometers and by analysis with finite elements (FE) models. Comparison indicated good agreement between the model and the actual bridge, with calculated eigenfrequencies of 2.17, 4.15 and 4.67 Hz, for the first transversal, vertical and torsional modes, respectively. Measurements during winter resulted in higher values due to increased stiffness caused by frozen materials.

sted, utgiver, år, opplag, sider
Geneva: International Association for Bridge and Structural Engineering, 2015. s. 255-262
HSV kategori
Forskningsprogram
Konstruktionsteknik; Matematik; Attraktivt samhällsbyggande (FOI)
Identifikatorer
URN: urn:nbn:se:ltu:diva-34954Lokal ID: 94595912-e47e-4600-8e52-15aff592265eISBN: 9783857481406 (tryckt)OAI: oai:DiVA.org:ltu-34954DiVA, id: diva2:1008206
Konferanse
IABSE Conference : Structural Engineering: Providing Solutions to Global Challenges 23/09/2015 - 25/09/2015
Merknad
Godkänd; 2015; 20150527 (nikbag)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-03-26bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

http://www.iabse.org/Geneva2015Report

Personposter BETA

Bagge, NiklasNilimaa, JonnyEnochsson, OlaSabourova, NataliaGrip, NiklasEmborg, MatsElfgren, LennartTu, Yongming

Søk i DiVA

Av forfatter/redaktør
Bagge, NiklasNilimaa, JonnyEnochsson, OlaSabourova, NataliaGrip, NiklasEmborg, MatsElfgren, LennartTu, Yongming
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 344 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf