1 AIT Asian Institute of Technology

Random vibrations of a girder bridge due to a vehicle moving over a rough surface

AuthorInbanathan, Mahil Jacob
Call NumberAIT Thesis no.ST-82-08
Subject(s)Girders--Vibration
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractThe dynamic response of a box girder bridge due to a vehicle moving across the span is presented. The effect of the randomly varying dynamic force generated by the vehicle moving over a rough bridge deck is considered in the analysis. Discretized equations of motion for a lumped mass system, obtained using the finite element approach, are solved using the Newmark integration method. A comparison is made of results obtained by modelling the vehicle as an unsprang mass and as a force. A statistical analysis of the results shows that, for the system analyzed, peak impact factors for deflection, moments and shear are considerably greater than those normally prescribed in bridge codes, especially when the vehicle isĀ· moving at high speed. The effect of vehicle mass is also more significant at higher speeds.
Year1982
TypeThesis
SchoolSchool of Engineering and Technology
DepartmentDepartment of Civil and Infrastucture Engineering (DCIE)
Academic Program/FoSStructural Engineering (STE) /Former Name = Structural Engineering and Construction (ST)
Chairperson(s)Wireland, Martin
Examination Committee(s)Loo, Yew-Chaye ; Ogawa, Junji
Scholarship Donor(s)The Australian Government
DegreeThesis (M.Eng.)- Asian Institute of Technology, 1982


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