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Rehabilitation Design and Construction of an RC Arch Bridge

  • “Leon” Lung-Yang LaiEmail author
Conference paper
Part of the Structural Integrity book series (STIN, volume 11)

Abstract

This paper summarizes the highlights of rehabilitation design and construction of a reinforced concrete arch bridge. The bridge consists of five open-spandrel arch spans and nine closed-spandrel arch spans, with a total structure length of 420 m and an out-to-out width of 24.4 m. The bridge was originally constructed in 1913 and has exhibited deteriorations in many structural members, including the arch ribs, spandrel columns, arch barrels, and concrete floorbeams. Load rating analyses were conducted to determine the capacity of the bridge for the current design loadings based on the as-inspected condition. Additional analyses were also conducted for staged construction, temperature effects, and additional defects during reconstruction due to construction. The load rating analyses for the arches and spandrel columns are based on strain compatibility (P-M capacity interaction curves). The floorbeams exhibited concrete spalls and exposed reinforcing rebars at the midspan. The lap lengths of the reinforcing steels were determined to be insufficient, which resulted in low ratings of the floorbeams based on the as-inspected condition. The floorbeams were therefore needed to be replaced.

Keywords

Arch Design Rehabilitation Construction 

References

  1. 1.
    AASHTO LRFD Bridge Design Specifications, American Association of State Highway Transportation Officials, Eighth Edition, Washington, DC (2018)Google Scholar
  2. 2.
    AASHTO Manual for Condition Evaluation and Load and Resistance Factor Rating (LRFR) of Highway Bridges, American Association of State Highway Transportation Officials, Washington, DC (2003)Google Scholar
  3. 3.
    Lai, L. : Thermal effect on load ratings of RC open-spandrel arch bridges. ASCE Structures Congress Proceedings, Pittsburgh (2013)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Specialty Engineering, Inc.BristolUSA

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