Modification studies for a bridge girder of reinforced plastics.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates
...

to

...
Document Data
Library
People
Clear All
...
Clear All

For additional assistance using the Custom Query please check out our Help Page

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i

Modification studies for a bridge girder of reinforced plastics.



English
Details You May Also Like

Details:

  • Creators:
    McCormick, Fred C
  • Corporate Creators:
    Virginia Highway & Transportation Research Council
  • Subject/TRT Terms:
  • Publication/ Report Number:
    VHTRC 77-R5
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Virginia
  • Edition:
    Final report.
  • Corporate Publisher:
    Virginia Transportation Research Council (VTRC)
  • Abstract:
    Several modifications were made in the design of a glass-reinforced plastic girder in an effort to improve its load-deflection performance characteristics. The addition of lateral ties between the lower chords of adjacent girders in a trisectional structure significantly reduced the horizontal displacements of the sections due to vertical loads. Considerable improvement was also made in vertical deflections by the replacement of glass strands with Kevlar 49 strands in the tension elements. The replacement of pin-connected stiffener assemblies with rigid stiffeners did not indicate improved performance in a load test. Secondary creep deflections were estimated to increase at a rate of 0.03 inch per year in a trisectional structure loaded to 100 psf. Ultimate load tests indicated a safety factor of 8 based on AASHTO design loads for pedestrian bridges. Criteria for the design of triangular trussed girder structures should be based on limiting deflections, mechanical protection of stressed elements from degrading environmental factors, automated fabrication procedures, and the use of combinations of materials to effect cost benefits.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
  • Download URL:
  • File Type:
    Filetype[PDF-2.45 MB]

You May Also Like

Checkout today's featured content at staging-dot.cdc.gov