Extension of semi-analytical approach to determine natural frequencies and mode shapes of multi-span orthotropic bridge deck
|Title:||Extension of semi-analytical approach to determine natural frequencies and mode shapes of multi-span orthotropic bridge deck||Authors:||Rezaiguia, Abdelouahab
|Permanent link:||http://hdl.handle.net/10197/4874||Date:||10-Jul-2012||Abstract:||This paper extends a single equation, semi-analytical approach for three-span bridges to multispan ones for the rapid and precise determination of natural frequencies and natural mode shapes of an orthotropic, multi-span plate. This method can be used to study the dynamic interaction between bridges and vehicles. It is based on the modal superposition method taking into account intermodal coupling to determine natural frequencies and mode shapes of a bridge deck. In this paper, a four- and a five-span orthotropic roadway bridge decks are compared in the first 10 modes with a finite element method analysis using ANSYS software. This simplified implementation matches numerical modeling within 2% in all cases. The paper verifies that applicability of single formula approach as a simpler alternative to finite element modeling.||Type of material:||Journal Article||Publisher:||Techno-press Ltd||Copyright (published version):||2012 Techno-press||Keywords:||natural frequencies; natural mode shapes; multi-span orthotropic bridge deck; dynamic loading; traffic||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Earth Institute Research Collection|
Civil Engineering Research Collection
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