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:
  • Concrete bridges
  • Bridge construction
  • Bridge design
  • Prestressing
  • Pretensioning
  • Girders
  • Concrete bridges--Nebraska--Omaha--Design and construction
• 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.
  More +
• Format:
  PDF
• Funding:
  SPR-PL-1 (037) P587
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24399/dot_24399_DS1.pdf
• File Type:
  [PDF - 23.20 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:e917fa981d45e3aa478c99dc5164f273ca1c1651e1d7f3d11159ea3ace7d5eff52ae1eb4b491f950c101a237c63876e62898a1eda5be771741bb31163c7de59e