Dynamic properties of stay cables on the Penobscot Narrows bridge.
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

i

Dynamic properties of stay cables on the Penobscot Narrows bridge.

Filetype[PDF-10.15 MB]


Select the Download button to view the document
This document is over 5mb in size and cannot be previewed
English
Details You May Also Like

Details:

  • Creators:
  • Corporate Creators:
    Genex Systems, LLC
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-HRT-14-067
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    United States. Federal Highway Administration. Office of Infrastructure Research and Development
  • Abstract:
    Cable-stayed bridges have been recognized as the most efficient and cost effective structural form for medium to long

    span bridges over the past several decades. With their widespread use, cases of serviceability problems associated with

    large amplitude vibration of stay cables have been reported. Stay cables are laterally flexible structural members with

    very low inherent damping and thus are highly susceptible to environmental conditions such as wind and rain/wind

    combination.

    Recognition of these problems led to the incorporation of different types of mitigation measures on many cable-stayed

    bridges around the world. These measures included surface modifications, cable crossties and external dampers.

    Modification of cable surfaces has been widely accepted as a means to mitigate rain/wind vibrations. Recent studies

    have firmly established the formation of a water rivulet along the upper side of the stay and its interaction with wind

    flow as the main cause of rain/wind vibrations. Appropriate modification of exterior cable surface effectively disrupts

    the formation of a water rivulet.

    The objective of this study was to supplement the existing knowledge base on some of the outstanding issues of stay

    cable vibrations and develop technical recommendations that may be incorporated into design guidelines. Specifically,

    this project focused on identification of in-situ cable dynamic properties and performance of external viscous dampers

    on the Penobscot Narrows Bridge. Forced vibration tests were conducted on the stay cables during the latter stages of

    construction, just prior to and following installation of viscous dampers. Cable properties, such as vibration frequencies

    and damping levels, were established and compared with design targets.

  • Format:
    PDF
  • Funding:
    DTFH61-07-D-00034
  • Collection(s):
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at rosap.ntl.bts.gov