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Slip between glulam beams in stress-laminated timber bridges: finite element model and full-scale destructive test
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.ORCID-id: 0000-0002-0145-080X
Martinssons Träbroar AB.
SP Trätek.
2011 (Engelska)Ingår i: Journal of Bridge Engineering, ISSN 1084-0702, E-ISSN 1943-5592, Vol. 16, nr 2, s. 188-196Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Stress laminated timber bridge decks consist of several sawn timber beams or glulam beams held together with prestressed steel bars. Frictional shear stresses between the beams transfer loads between individual beams. The vertical (transverse) shear stress component has been discussed extensively before; this paper further considers the horizontal shear stress. A full-scale test and corresponding finite element simulations for a specific load case confirmed the occurrence of horizontal slip between beams. The finite element model handled both vertical and horizontal frictional slip using an elastic-plastic material model. The results showed that the finite element model gives reliable results and that slip in general leads to permanent deformations that may increase with load cycling. Horizontal slip between beams over a large area of the bridge deck begin at a low load, resulting in a redistribution of load between beams, but do not lead to immediate failure. Vertical slip between beams start at a high load close to the load application point and lead to failure.

Ort, förlag, år, upplaga, sidor
2011. Vol. 16, nr 2, s. 188-196
Nyckelord [en]
Civil engineering and architecture - Building engineering
Nyckelord [sv]
Samhällsbyggnadsteknik och arkitektur - Byggnadsteknik
Nationell ämneskategori
Annan maskinteknik
Forskningsämne
Träteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-12304DOI: 10.1061/(ASCE)BE.1943-5592.0000153ISI: 000287879700002Scopus ID: 2-s2.0-79952296551Lokalt ID: b6a698f0-d1ed-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-12304DiVA, id: diva2:985254
Anmärkning
Validerad; 2011; 20101007 (matse)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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