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Serviceability-related issues for bridge live load deflection and construction closure pours.

File Language:
English


Details

  • Creators:
    Fu, Chung C. ; Zhao, Gengwen ; Ye, Yunchao ; Zhang, Fan
  • Corporate Creators:
    University of Maryland (College Park, Md.)
  • Subject/TRT Terms:
  • Publication/ Report Number:
    MD-15-SP309B4M
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Maryland
  • Corporate Publisher:
    Maryland. State Highway Administration. Office of Policy & Research
  • Abstract:
    This study investigated the design criteria and practices in an effort to improve the quality of bridge designs in the ; State of Maryland and beyond. This first criterion investigated was the live load deflection for steel bridges. The ; second design/construction criterion investigated was designing and detailing bridge deck closure pours. ; Previous and current practices and future planning on the serviceability of bridges have been documented. ; State-of-the-practice methods from federal and other state agencies were collected. Three bridges were chosen for ; refined analyses to investigate the live load deflections. Field measurements for these three bridges were collected ; from the research team to facilitate this study. Thirty steel girder bridges from the Maryland State Highway ; Administration’s (SHA) inventory were selected for statistical analyses. Steel bridges designed with the live load ; deflection limit have been evaluated. Closure-pour analyses were conducted by line-girder models, ; two-dimensional grid models or three-dimensional finite element models. All three methods generate accurate ; enough camber diagrams to predict differential deflections between stages for straight girder systems, if creep is ; not considered. Creep effect could be alleviated by proper camber and scheduling on pouring.
  • Format:
    PDF
  • Funding:
    SP309B4M
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/29143/dot_29143_DS1.pdf
  • File Type:
    Filetype[PDF - 2.74 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:5d7999eae9c82d85786eaaa4c5f5b6ea318958b223d33674ad6756bc01294129
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