A novel deployable tied arch bridge

George Lederman, Zhong You, Branko Glisic

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

This paper presents a novel type of vehicle launched deployable bridge for military or relief operations. Most existing vehicle launched deployable bridges (also known as assault bridges or mobile bridges) take the form of a simply supported beam and require mechanically complex deployment sequences. This bridge has, first, an innovative deployment sequence based on a single actuator and a tied arch form; second, a stackable cross-section to reduce the package size during transport; and third, vertical suspenders which allow for "smart" redistribution of load as the bridge deflects. Analysis of the bridge is presented along with experimental results from a three-meter long scale physical model. Load cells and fiber optic strain sensors are used to monitor the physical model, and the results are shown in relation to a statics analysis. Our results suggest this novel design would have lower forces and moments than existing deployable bridges, making it lighter and potentially advancing the current state of the art.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalEngineering Structures
Volume70
DOIs
StatePublished - Jul 1 2014

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Keywords

  • Actuation
  • Deployable structure
  • Fiber optic FBG strain sensors
  • Load cell
  • Scale testing
  • Smart structure
  • Tied arch bridge

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