U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Exploratory study of partial isolation of highway bridges.

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    Utah State University. Dept. of Civil and Environmental Engineering
  • Corporate Contributors:
    Utah. Dept. of Transportation
  • Subject/TRT Terms:
  • Publication/ Report Number:
    UT-11-03
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Utah
  • Edition:
    Final; 11/2007 ¿ 01/2011.
  • Corporate Publisher:
    Utah. Dept. of Transportation. Research Division
  • NTL Classification:
    NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures
  • Abstract:
    A special class of seismically isolated bridges shares a common feature in that both ends of the superstructure are restrained and isolators over the columns of bridge uncouple the superstructure from the ground motions. They are defined as partial isolation bridges. From measured acceleration responses, the effectiveness of full seismic isolation had been confirmed widely. However, the seismic isolation behavior in the partial isolation has not been widely observed.

    The effectiveness of partial isolation is evaluated in this study. The static design procedures for linear and nonlinear partially isolated bridges are developed. Results from the static analysis of linear and nonlinear partially isolated bridges, compared with conventional and fully isolated bridges, demonstrate that the effectiveness of nonlinear partial isolation is close to full isolation for reducing the yield force and displacement of the columns in some parameter ranges. However, increased displacement demands at the abutments are observed. Nonlinear time history analyses of the different bridge models under earthquake excitations are carried out to investigate the accuracy of the design procedure for nonlinear partial isolation. In addition, an example shows the application of nonlinear partial isolation to a practical bridge.

  • Format:
    PDF
  • Funding:
    2659910
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:e848c75c091f46c68d299965214f1d15e8e20d8d792f3ebba3dac2facba639d5
  • Download URL:
  • File Type:
    Filetype[PDF - 1.08 MB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
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.
BACK TO TOP