Development of Non-Fracture Critical Steel Box Straddle Caps [Project Summary Report]

Details

• Creators:
  Helwig, Todd ; Zecchin, Esteban ; Williams, Emma ; Liang, Chen ; Engelhardt, Michael ; Williamson, Eric ; Hebdon, Matthew
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Fracture Critical Fracture Mechanics Redundancy Steel Straddle Caps Tensile Properties Internal Redundancy
• Publication/ Report Number:
  0-7012
• Resource Type:
  Brief
• Geographical Coverage:
  Texas;United States
• Edition:
  Project Summary Report
• Corporate Publisher:
  University of Texas at Austin. Center for Transportation Research
• Abstract:
  The research study included full-scale experimental testing and parametric finite element (FE) analyses, which resulted in a proposed methodology to estimate the flexural resistance of steel box caps following a potential fracture event. The work was conducted at the Ferguson Structural Engineering Laboratory at The University of Texas at Austin. The following major tasks were completed on this project: 1. Four full-scale specimens were tested to fracture by introducing an initial defect and cooling the steel to lower-shelf temperatures to induce brittle behavior: i. Baseline Specimen: a conventional all-welded box girder with no internal redundancy ii. Specimen A: an all-welded section with added post-tensioning bars anchored at component iii. Specimens B1 and B2: specimens with the bottom flange plate bolted to the rest of the section through flange connection plates, providing cross-boundary separation between these components.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:867e2ba38e4b02eeb558ce28e1907114d78251d09fcb24719d725c8cab6b9a89c12e0e95a61842b5f13caffafa710f67b217c7122cf53f0f77e14f512c167a04
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/79617/dot_79617_DS1.pdf
• File Type:
  [PDF - 245.67 KB ]