Change search
ReferencesLink to record
Permanent link

Direct link
Numerical evaluation of the mid-span assumption in the calculation of total load effects in railway bridges
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering. Roughan and O'Donovan Innovative Solutions, Ireland.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
2016 (English)In: Engineering structures, ISSN 0141-0296, E-ISSN 1873-7323, Vol. 107, 1-8 p.Article in journal (Refereed) PublishedText
Abstract [en]

Maximum load effects in simply supported railway bridges traversed by trains are generally investigated at the mid-span section. However, this assumption is not necessarily correct. The true maximum load effect might occur at some other bridge section and its magnitude could be significantly greater. This paper quantifies the underestimation of the load effects as a result of exclusively considering the middle section, with special emphasis on resonant situations. A 2D numerical model of a vehicle-track-bridge system was used to evaluate different vehicle velocities, bridge properties and track irregularity conditions. The error due to the mid-span assumption depends on the particular case considered but can be related to the relative energy content of the higher modes of vibration. The results show that the error is greatest for accelerations, smaller for bending moments and is almost negligible for displacements.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 107, 1-8 p.
Keyword [en]
Bridge, Dynamic, Railway, Resonance, Mid-span, Acceleration
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-180477DOI: 10.1016/j.engstruct.2015.11.005ISI: 000366775600001ScopusID: 2-s2.0-84946866203OAI: oai:DiVA.org:kth-180477DiVA: diva2:894538
Note

QC 20160115

Available from: 2016-01-15 Created: 2016-01-14 Last updated: 2016-01-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Cantero, DanielKaroumi, Raid
By organisation
Civil and Architectural EngineeringStructural Engineering and Bridges
In the same journal
Engineering structures
Civil Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 85 hits
ReferencesLink to record
Permanent link

Direct link