Closed-form solution for the mode superposition analysis of the vibration in multi-span beam bridges caused by concentrated moving loads
2013 (English)In: Computers & structures, ISSN 0045-7949, E-ISSN 1879-2243, Vol. 119, 85-94 p.Article in journal (Refereed) Published
In this paper, a closed-form solution for evaluating the dynamical behavior of a general multi-span Bernoulli-Euler beam is derived. The natural frequencies of vibration and corresponding mode shapes are obtained by applying the boundary conditions to the characteristic function of a beam. A Laplace transformation is applied to the governing differential equation which is then solved for each normal mode in the frequency domain. The main contribution of this paper is to provide a closed-form solution for the vibration of continuous stepped beams under constant moving loads. Several numerical examples are included.
Place, publisher, year, edition, pages
2013. Vol. 119, 85-94 p.
Dynamic, Vibration, Railway bridge, High-speed train, Multi-span beam, Moving load
Other Civil Engineering
IdentifiersURN: urn:nbn:se:kth:diva-122104DOI: 10.1016/j.compstruc.2013.01.003ISI: 000317171000008ScopusID: 2-s2.0-84873620203OAI: oai:DiVA.org:kth-122104DiVA: diva2:621373
QC 201305142013-05-142013-05-132013-05-29Bibliographically approved