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On the Separation between Moving Vehicles and Bridge

✍ Scribed by Y.S. Cheng; F.T.K. Au; Y.K. Cheung; D.Y. Zheng

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
224 KB
Volume
222
Category
Article
ISSN
0022-460X

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✦ Synopsis

In vehicle ±bridge interaction problems, the contact force between the moving vehicle and the bridge depends on the velocity and acceleration of the moving vehicle, the ¯exibility of the bridge as well as the roughness of the upper surface of the bridge. In some cases, the contact force may become zero, which implies that the moving vehicle separates from the bridge. Neglecting this separation phenomenon will lead to a tensile contact force, which will aect the results. This paper investigates the onset and eects of separation between the moving vehicle and bridge. An algorithm to account for the impact on the reestablishment of contact is proposed. Numerical results also show that the eects are not negligible.

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