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Corresponding Author

艾辉林ai hui lin

Abstract

The structures of continuous multi-span curved footbridges are gentle, and the problem of human-induced vibration is prominent. Thus, it is essential to carry out vibration reduction design for it. This paper adopted Ansys finite element analysis software to study the changes in maximum acceleration response of each bridge span under different tuned mass damper (TMD) layout schemes based on the vibration response of a continuous multi-span curved footbridge under the action of different crowds, and evaluated the vibration reduction effect of TMDs. The results demonstrate that there is a difference in vibration response between uniformly and non-uniformly distributed crowds, and the most unfavorable response of both should be considered in vibration reduction design. The curve shape has an influence on the arrangement direction of TMDs under the lateral bending vibration mode, and the reasonable TMD arrangement direction should be determined for each bridge span based on the vibration mode and response situation. Meanwhile, the vibration reduction effect of multi-span TMDs is closely related to the vibration reduction rate of single-span TMDs, and the vibration reduction effect of single-span TMDs is generally better.

Publication Date

11-8-2022

DOI

10.14048/j.issn.1671-2579.2022.05.013

First Page

72

Last Page

77

Submission Date

April 2025

Reference

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