Seismic response control of bridges with nonlinear tuned vibration absorbers

authored by

Said Elias, Rajesh Rupakhety, Dario De Domenico, Simon Olafsson

Abstract

The paper investigates seismic response control of bridges with nonlinear tuned vibration absorbers (n-TVAs). A three-span continuous bridge is used as case study. The n-TVAs are designed to act in both longitudinal and transverse directions of the bridge. The n-TVAs are modelled as inelastic springs with bilinear hysteretic behavior. A simple and effective method to design the parameters of the n-TVAs for controlling structural displacement is presented. The performance of the proposed n-TVAs is compared with the optimum linear TVAs (o-TVAs) and elasto-plastic bilinear TVAs (bn-TVAs). The results show that the n-TVAs are at least as effective as o-TVAs in controlling structural response. Because the n-TVAs do not require additional dashpots like the o-TVAs, they provide a more economical solution. It is observed that although effective in controlling structural response, their stroke is of the same order as that of o-TVAs. Addition of a viscous dashpot to the device is found to reduce their stroke, although accompanied by an inherent detrimental effect on the structural control performance.

External Organisation(s)

University of Iceland

Type

Article

Journal

Structures

Volume

34

Pages

262-274

No. of pages

13

ISSN

2352-0124

Publication date

12.2021

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality, Building and Construction, Civil and Structural Engineering, Architecture

Electronic version(s)

https://doi.org/10.1016/j.istruc.2021.07.066 (Access: Closed)