Dynamic testing of a soil-steel composite railway bridge
2010 (English)In: Proc. 5th Int. conference on bridge maintenance, safety and management (IABMAS 2010), 2010, 2944-2948 p.Conference paper (Refereed)
The dynamic response of a long-span arch soil-steel composite railway bridge is studied. The bridge has a span of 11 m and a rise of 4.3 m. Strains, displacements and vertical ballast accelerations were measured during passages of a locomotive at different speeds. The results indicate that the speed of the locomotive has a large influence on the displacements, thrusts and moments. The structure was found to be safe when measured values of moments and thrusts were compared with the live load calculations according to design codes. However, dynamic amplification factors as high as 1.45 were obtained for the moments at the quarter point and this is found to be much greater than the values specified in bridge design codes. Despite this, due to the high damping involved, bridges of this kind are believed to be less sensitive to resonance problems from passing trains.
Place, publisher, year, edition, pages
2010. 2944-2948 p.
Bridge design, Design codes, Different speed, Dynamic amplification factors, Dynamic testing, High damping, Live loads, Long span, Railway bridges, Resonance problem
IdentifiersURN: urn:nbn:se:kth:diva-78839ISI: 000320615005017ScopusID: 2-s2.0-84856725257OAI: oai:DiVA.org:kth-78839DiVA: diva2:492924
5th Int. conference on bridge maintenance, safety and management (IABMAS 2010), Philadelphia, Pennsylvania, USA
QC 201202092012-02-082012-02-082013-12-19Bibliographically approved