Simple for Dead, Continuous for Live Load Steel Superstructures [Research Summary]

Details

• Creators:
  Derner, Jon
• Corporate Creators:
  Horner & Shifrin, Inc. ; University of Missouri--Columbia
• Contributor:
  Hosey, Jenni
• Corporate Contributors:
  Missouri. Department of Transportation. Construction and Materials Division ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Static loads
  • Finite element method
  • Bridges
  • Design methods
  • Guidelines
  • Steel structures
  • Literature reviews
  • Field tests
  • Bridge construction
  • Bridge decks
  More +
• Publication/ Report Number:
  cmr26-011
• Resource Type:
  Brief
• Geographical Coverage:
  United States ; Missouri
• Edition:
  Research Summary
• Corporate Publisher:
  Missouri. Department of Transportation. Construction and Materials Division
• Description:
  The Missouri Department of Transportation (MoDOT) is using a bridge design method known as Simple for Dead Load, Continuous for Live Load (SDCL) on several steel bridges in Missouri. In this method, steel beams are designed to act as simple spans while the concrete deck is being built and then act more like a continuous bridge after the concrete has hardened. MoDOT currently has approximately 55 bridges in its inventory using this design method, including 50 constructed as part of Design-Build bridge bundles. To validate the EPG procedures, the research team reviewed the literature to develop an understanding of critical issues, materials, and other DOT guidance and experience, policies, developed details, and past research results. The review showed that formal design provisions for SDCL steel bridges are limited, with only a few states mentioning SDCL or similar concepts. Previous research showed that, after the bridge is complete, slab reinforcement in tension and steel connection blocks in compression were the main contributors to the negative flexural resistance. Previous studies also showed that some continuity can develop during construction.
• Format:
  PDF
• Funding:
  TR202505
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93895/dot_93895_DS1.pdf
• File Type:
  [PDF - 344.52 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:30af02dfd65955d0324b46127b14c4ceedc217961ae0b4e792e0a68fec0a9c22bc4e486598abd4b5ab47cb50f27cca6287c0df4ea7ecd0e69262f4a62351b362