Crack Width Prediction for Exterior Portion of Inverted “T” Bent Caps

Details

• Creators:
  Zhu, Ronnie Rong-Hua ; Hsu, Thomas T. C.
• Corporate Creators:
  University of Houston. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Texas Department of Transportation
• Subject/TRT Terms:
  • Bents
  • Cracking
  • Mathematical models
  • Mathematical prediction
  • T beams
  • Reinforced concrete
  • Serviceability
  • Data analysis
• Publication/ Report Number:
  0-1854-4
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Corporate Publisher:
  University of Houston. Dept. of Civil and Environmental Engineering
• Abstract:
  Unacceptable diagonal cracks frequently occur at the re-entrant corners between the cantilever ledges and the web of inverted “T” bent caps at service load. In order to control the diagonal cracks, an extensive investigation was carried out. The first phase of this research was to predict the diagonal crack widths at the interior portions of the bent caps. A 2-D analytical model, called Compatibility-Aided Strut-and-Tie Model (CASTM), was developed and calibrated by the test results of seven full-size 2-D specimens. The first phase of research was reported in TxDOT research report 0-1854-3. This report (0-1854-4) describes the second phase of research to predict the diagonal crack widths at the end faces of the exterior portions of bent caps. In this second-phase research, the CASTM was extended to 3-D analysis. Ten 3-D specimens were then tested, and the resulting data were used to calibrate the model. Crack control methods for the exterior end faces were recommended.
• Format:
  PDF
• Funding:
  0-1854
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86108/dot_86108_DS1.pdf
• File Type:
  [PDF - 2.78 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:482c672b247f11fbef51e213bcc6f9ec2aac0c31a4e3439c9d620bd104727d2e22b5466c407c261ee3203e17e9bfdfdf39d8bf52ef7d8eae7a8bfed11ea13530