1. Vehicle-bridge interaction and the tuned-mass damper effect on bridges during vertical earthquake excitation.
- Author
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Homaei, Hossein, Dimitrakopoulos, Elias G., and Bakhshi, Ali
- Subjects
EARTHQUAKES ,SEISMIC response ,EFFECT of earthquakes on bridges - Abstract
Many seismic studies treat a vehicle-bridge coupled system as a bridge-TMD (tuned-mass damper) system, and, unsurprisingly, have found that the vehicle usually reduces the seismic response of the bridge. The current study challenges this notion by looking deeper into how a vehicle in motion influences the seismic performance of the bridge that it traverses. Specifically, the analysis explores the underlying physical mechanisms of vehicle-bridge interaction (VBI) and TMD, identifies the dominant terms in each system, and highlights both their similarities and differences. In this context, the study compares via pertinent numerical simulations the effect of a moving vehicle versus a stationary vehicle on the bridge, under a set of natural earthquake records along solely the vertical direction. The study also shows how the vehicle's speed and timing (i.e., time difference between a vehicle's entry to the bridge and the earthquake's occurrence) influence the seismic response of the bridge. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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