Rapid construction of Pacific Street Bridge with o.7 inch strands.

Details

• Creators:
  Hanna, Kromel E. ; Morcous, George ; Tadros, Maher K.
• Corporate Creators:
  University of Nebraska--Lincoln. Dept. of Civil Engineering
• Corporate Contributors:
  Nebraska. Dept. of Roads
• Subject/TRT Terms:
  Bridge Construction Bridge Design Concrete Bridges Concrete Bridges--Nebraska--Omaha--Design And Construction Girders Prestressing Pretensioning
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska
• Edition:
  Final report.
• Corporate Publisher:
  Nebraska. Dept. of Roads
• Abstract:
  The Pacific Street Bridge over I-680 in Omaha, NE is the first bridge in the United States to use 0.7-in.-diameter prestressing
  
  strands in pretensioned concrete girders. This project was funded by FHWA through NDOR under the Innovative Bridge Research
  
  and Deployment (IBRD) program. The bridge construction was completed in August 2008 as a replacement to an existing bridge.
  
  The old bridge was 74-ft-wide and had four spans that were 44-ft 6-in. 73-ft, 73-ft 6-in., and 30-ft long. Each span consisted of 11
  
  steel I-girders at 7-ft spacing. The new bridge consists of two identical spans, 98-ft-long each with 17 deg. skew angle.
  
  The bridge has six traffic lanes with a total width of 105 ft 8 in. (32.2 m). The bridge superstructure consists of twenty NU900
  
  I-girders (ten for each span) that are 35.4 in.-deep and spaced at 10-ft, 8 in. Each girder was pretensioned using thirty 0.7-in.-
  
  diameter strands that are spaced at 2 in. horizontal spacing and 2.5 in. vertical spacing. Since the design and production of the
  
  bridge girders were completed before the successful testing of a girder with 2 in. by 2 in. spacing, that optimal spacing was not
  
  allowed on this bridge.
  
  This report presents the testing of second and third generations of threaded rod continuity systems. The negative moment area
  
  (over the pier) using progressively simplified reinforcement details was tested twice, as labeled “second generation” and “third
  
  generation’ threaded rod connection details. The details show excellent performance with little extra details compared to
  
  conventional continuous-for-live-load details. Under this threaded rod system, superior long term performance at an optimum cost
  
  is achieved.
  
  
• Format:
  PDF
• Funding:
  SPR-PL-1 (037) P587
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:e917fa981d45e3aa478c99dc5164f273ca1c1651e1d7f3d11159ea3ace7d5eff52ae1eb4b491f950c101a237c63876e62898a1eda5be771741bb31163c7de59e
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24399/dot_24399_DS1.pdf
• File Type:
  [PDF - 23.20 MB ]