Appendix D : FIB-54 tests.

Details

• Alternative Title:
  End region detailing of pretensioned concrete bridge girders, appendix D : FIB-54 tests.
• Creators:
  Hamilton, H.R. ; Consolazio, Gary R. ; Ross, Brandon E.
• Corporate Creators:
  University of Florida. Dept. of Civil and Coastal Engineering
• Subject/TRT Terms:
  Bridge Design Finite Element Method Girders Load Tests Prestressed Concrete Pretensioning Reinforcement (Engineering) Serviceability Shear Strength
• Publication/ Report Number:
  UF Project No. 00072910 ; UF Project No. 00074016
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ; NTL-HIGHWAY/ROAD TRANSPORTATION-Design ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
• Abstract:
  Confinement reinforcement is placed near the end of pretensioned concrete I-girders to
  
  enclose prestressing strands in the bottom flange. Experimental and analytical test programs
  
  were conducted to investigate the function of confinement reinforcement and to provide the basis
  
  for a confinement reinforcement design model. Five 54-in. deep Florida I-Beam (FIB-54)
  
  girders were fabricated and load tested in the experimental program. Each end of each girder
  
  had a different combination of variables, which resulted in ten unique test specimens. Variables
  
  included: presence or absence of embedded steel bearing plates, quantity and configuration of
  
  confinement reinforcement, strand bond pattern, strand quantity, and quantity of horizontal and
  
  vertical end region reinforcement. Data were collected during and after prestress transfer to
  
  evaluate the effects of test variables on bottom flange cracking. Load tests were then conducted
  
  on each specimen (end) to determine the effects of test variables on girder behavior and capacity.
  
  Specimens were loaded in three-point bending at a shear span-to-depth ratio of 2.0. Failure
  
  modes in the test program included web-shear, bond-shear, and lateral-splitting. Primary
  
  outcomes of the research include an improved understanding of the function of confinement
  
  reinforcement during prestress transfer and at ultimate load, and an improved understanding the
  
  interaction between confinement reinforcement and the other end region variables.
  
  
• Format:
  PDF
• Alternate URL:
  http://ntl.bts.gov/lib/47000/47400/47427/FDOT-BDK75-977-05-rpt.pdf
• Funding:
  BDK75 977-05
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:96776d1422b04a72f5d07c83070bbb777d7adc9b990fcd3835cfc95786b37090a382ceaf2bd9ee00d4d336cd30c0375ae1403f1ea479d4c2e7ef5517f7effb8f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25877/dot_25877_DS1.pdf
• File Type:
  [PDF - 4.08 MB ]