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Vibration control of bridges under moving loads

โœ Scribed by Ho-Chul Kwon; Man-Cheol Kim; In-Won Lee

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
339 KB
Volume
66
Category
Article
ISSN
0045-7949

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โœฆ Synopsis

AbstractรThis paper presents vibration control of bridges under moving loads using a tuned mass damper (TMD). TMD, a kind of passive type control device, has a variety of merits in that it has permanent service time, and only requires easy management and maintenance eorts and no external power supplying sources. TMD is tuned to the ยฎrst dominant vertical mode and installed in the middle of bridges. The dynamic response of bridges subjected to moving loads can be obtained using moving mass model that considers the eects of the vehicle mass, thus TGV high-speed trains are modeled as 2 degree of freedom (DOF) systems consisting of the wheel and body. To show the eciency of TMD in the case of the three-span bridge, the midpoint vertical displacements and their fast Fourier transform results are compared before and after the installation of TMD.

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