Free vibration analysis of multi-span orthotropic bridge deck with rubber bearings
1
Applied Mechanics of New Materials Laboratory, University of 8 Mai 1945 Guelma, P.O.B 401, Guelma 24000, Algeria
2
Mechanic and Structures Laboratory, University of 8 May 1945-Guelma, Algeria
3
Center for Urban Science and Progress and Department of Civil Engineering, Tandon School of Engineering, New York University, United States of America
Submission date: 2020-04-30
Final revision date: 2020-11-18
Acceptance date: 2021-01-05
Online publication date: 2021-01-08
Publication date: 2021-03-04
Corresponding author
Abdelouahab Rezaiguia
Applied Mechanics of New Materials Laboratory, University of 8 Mai 1945 Guelma, P.O.B 401, Guelma 24000, Algeria
Applied Mechanics of New Materials Laboratory, University of 8 Mai 1945 Guelma, P.O.B 401, Guelma 24000, Algeria
Diagnostyka 2021;22(1):11–21
KEYWORDS
TOPICS
ABSTRACT
In this paper, a semi-analytical approach is proposed for free vibration analysis of a multi-span, orthotropic bridge deck with rubber bearings. This allows more realistic modeling of vibration transmission from a bridge’s deck to its supports. The approach is based on modal superposition incorporating intermodal coupling. The bridge deck was modeled as a continuous, multi-span, orthotropic rectangular plate with equivalent rigidities. The rubber bearings were inserted between the girders and rigid supports to absorb traffic-induced vibrations. The rubber bearing was modeled by linear elastic, vertical supports as very flexible in rotation and highly rigid in the vertical direction. The method’s efficacy was validated against two numerical examples. The absolute error was less than 10%.
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