Abstract
One way to reduce vibrations of a bridge abutment is to add an absorber tuned to the structure. It is important to properly design an absorber, which the most common design is a sprung mass because of its simple structure. A new parameter optimization criterion was proposed - consisting in minimizing the probability of the maximum vibrations of the structure exceeding a certain permissible value of displacements. This criterion means maximizing the reliability of the vibrating structure with regard to the maximum vibration amplitudes. The authors analyzes when vehicles are passing by a bridge abutment in two situations: there is a lot of traffic and the movement is small. In both the cases random vibrations of the bridge abutment are emulated by a filtered Poisson process. When traffic is so small that excitations can be considered separately, in the other way – a series of impulses. Numerical solutions and selection of optimum absorber parameters are presented for both situations.
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Podwórna, M., Grosel, J. (2022). Absorbers Impact on the Reliability of Bridge Abutments. In: Akimov, P., Vatin, N. (eds) XXX Russian-Polish-Slovak Seminar Theoretical Foundation of Civil Engineering (RSP 2021). RSP 2021. Lecture Notes in Civil Engineering, vol 189. Springer, Cham. https://doi.org/10.1007/978-3-030-86001-1_44
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DOI: https://doi.org/10.1007/978-3-030-86001-1_44
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