The effect of bridge deck design methodology on crack control.

Details

• Creators:
  Schmeckpeper, Edwin R. ; Nielsen, Richard ; Shiner, Craig ; Blandford, Matthew
• Corporate Creators:
  National Institute for Advanced Transportation Technology (NIATT) (U.S.)
• Corporate Contributors:
  Idaho. Transportation Department ; United States. Department of Transportation
• Subject/TRT Terms:
  • Bridge decks
  • Bridge superstructures
  • Concrete structures
  • Cracking of concrete pavements
  • Empirical methods Concrete structures
  • Bridges
  • Concrete Bridge Decks
  • Empirical Method
  • AASHTO LRFD
• Publication/ Report Number:
  N09-08
• Resource Type:
  Tech Report
• Geographical Coverage:
  Idaho
• Edition:
  Final report; 1/08-12/09.
• Corporate Publisher:
  Idaho Transportation Department
• Abstract:
  At present, the Idaho Transportation Department (ITD) Bridge Design Manual allows engineers to use the AASHTO empirical method to ; design concrete bridge decks. However, the ITD Bridge Section would like to compare their design practices to those employed by other ; state DOTs. The Bridge Section is also interested in the ability of the empirical deck design method to control deck cracking. ; AASHTO’s empirical deck design method and traditional design method are summarized. We reviewed the literature regarding the ; effect of bridge deck design methodology on deck cracking. Many researchers agree that the empirical bridge deck design method ; needs to be modified to limit cracking. For example, Frosch and Radabaugh believe that the empirical method does not require a large ; enough reinforcement ratio to adequately control cracking. Others such as Krauss believe that the deck‐to‐girder stiffness has a greater ; effect on deck cracking and should be increased in the empirical method. ; We also surveyed bridge deck design methods and typical deck designs for all of the states in the U.S. Bridge deck properties such as ; deck thickness, rebar size and rebar spacing from other states were compared to those specified by ITD. Most states and Canada use a ; significantly smaller spacing and larger reinforcement bar size. We believe that reducing the spacing and increasing the size of rebar ; would mitigate ITD’s deck cracking problem, although the degree to which deck crack spacing and width would be mitigated would ; require further research.
  More +
• Format:
  PDF
• Funding:
  RP-184
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24633/dot_24633_DS1.pdf
• File Type:
  [PDF - 1.32 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a73e7f8810dfbfe93ffc4bc5e989e77584d377db5099c3bb7ac281119f3920ada8259c8e687f40c1f0509fa3ea8ea4da42b2f6504065499b9e0c3dff8ab20ca5