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IMPACT RESPONSE OF BRIDGES WITH ELASTIC BEARINGS TO MOVING LOADS

โœ Scribed by J.-D. YAU; Y.-S. WU; Y.-B. YANG

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
478 KB
Volume
248
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

In this paper, the dynamic response of bridge girders with elastic bearings to moving train loads is studied using an analytical approach. Such a problem ha`s not been very well investigated in the literature. The present results indicate that the dynamic response of the beam at resonance remains generally constant, if the e!ect of damping is taken into account, and that the insertion of elastic bearings at the supports of the beam for the purpose of isolating the earthquake forces may adversely amplify the dynamic response of the beam to moving train loads. An envelope impact formula is derived for the de#ection of the beam with light damping, which serves as a useful, preliminary design aid to railway engineers.

2001 Academic Press

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