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Nonlinear Dynamic Analysis of a Track Bridge Structure Designed for a Floating Bridge

  • H. Sedarat
  • A. Kozak
  • I. Talebinejad
  • V. Jacob
  • A. Krimotat
  • T. Cooper
  • J. Sleavin
  • P. Cornish
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS, volume 35)

Abstract

The addition of Light Rail Trains (LRT) to the Homer M. Hadley Memorial Bridge, the widest floating bridge in the world located in Seattle, Washington, is currently in its design process. The design team has concluded that a transition Track Bridge (TB) is necessary to accommodate large movements induced by the floating bridge in relation to the fixed approach structures and to provide reliable LRT service along the I-90 corridor. Dynamic train-structure interaction analysis was required to evaluate the TB performance and ride quality. A high fidelity finite element model of the bridge was developed along with two TBs. Each TB has been designed with 34 double-concave Friction Pendulum Bearings (FPBs) supporting bearer bars at both ends. The FPB model includes bottom and top plates and a slider in between, all modeled with solid elements. Simulation of frictional contact interaction between the plates and slider allows limited transverse movement of the rail under moving train loads. In addition to numerical analysis, component and full scale tests have been planned to examine the TB kinematics as well as FPB behavior. This paper presents a unique multi-scale FE analysis of a train-structure interaction system which includes detailed model of TBs incorporated in the global model of the floating bridge.

Keywords

Dynamic analysis Floating bridge Light rail train Track bridge system Friction pendulum bearing 

References

  1. 1.
    As-built drawings – SR s 3rd Lake Washington Floating Bridge, Approaches and transition spansGoogle Scholar
  2. 2.
    Automatic Dynamic Incremental Nonlinear Analysis, ADINA, ADINA, R&D, http://www.adina.com
  3. 3.
    Draft Basis of Design Report (BODR), February 2012, prepared by Parsons BrinckerhoffGoogle Scholar

Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  • H. Sedarat
    • 1
  • A. Kozak
    • 1
  • I. Talebinejad
    • 1
  • V. Jacob
    • 1
  • A. Krimotat
    • 1
  • T. Cooper
    • 2
  • J. Sleavin
    • 3
  • P. Cornish
    • 3
  1. 1.SC Solutions IncSunnyvaleUSA
  2. 2.Parsons BrinckerhoffNew YorkUSA
  3. 3.Sound Transit, StSeattleUSA

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