A static analysis method for barge-impact design of bridges with consideration of dynamic amplification : final report, November 2009.

Details

• Creators:
  Consolazio, Gary R.
• Corporate Creators:
  University of Florida. Dept. of Civil and Coastal Engineering
• Corporate Contributors:
  Florida. Department of Transportation
• Subject/TRT Terms:
  • Bridge construction
  • Bridge design
  • Barge carriers
  • Bridges
  • Crashes
  • Bridges--Design and construction
  • Bridges--Accidents
  • Barges--Accidents
• Publication/ Report Number:
  00068901
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Edition:
  Final report.
• Corporate Publisher:
  University of Florida. Department of Civil and Coastal Engineering
• Abstract:
  Current practice with regard to designing bridge structures to resist impact loads associated with barge collisions relies upon the ; use of the American Association of State Highway and Transportation Officials (AASHTO) bridge design specifications. The AASHTO ; barge impact design provisions, which were developed from pendulum impact-hammer testing of reduced-scale barge models, employ a ; static analysis approach. However, recent studies have revealed that significant dynamic amplifications of structural demands (pier design ; forces) are produced as the result of mass-related inertial forces associated with the bridge superstructure. These same studies have also ; demonstrated that currently employed static analysis procedures fail to capture or account for such amplification effects. ; In the present study, an equivalent static analysis procedure is developed for use in barge impact design and assessment of bridge ; structures. In contrast to the AASHTO static analysis procedure, the new method proposed here, called the static bracketed impact analysis ; (SBIA) method, employs static loading conditions and static structural analyses, but produces bridge design forces that conservatively ; approximate dynamic amplification effects associated with superstructure mass. Alternatively stated, the SBIA method produces bridge ; design forces that are equivalent to—or greater than—those that would be predicted using more refined dynamic time-domain methods ; such as the previously developed coupled vessel impact analysis (CVIA) method. Due to its simplicity, SBIA is particularly appropriate for ; situations involving preliminary design of bridges or the design of relatively regular bridge structures for which time-domain dynamic ; analysis is not warranted. ; In this report, a detailed discussion of mass-related dynamic amplifications in bridges subjected to barge impact loading is ; presented. Based on insights gained through characterization of dynamic amplification modes, the static bracketed impact analysis (SBIA) ; method is developed and described in detail. A parametric study is then conducted using the SBIA method to demonstrate that ; conservative, dynamically amplified bridge design forces are produced.
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• Format:
  PDF
• Funding:
  BD-545 RPWO 85
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17470/dot_17470_DS1.pdf
• File Type:
  [PDF - 2.50 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:cc8eea11bd1a611540679ba52cefff8abdd0a72bb5b653681fcc6b9467ee6d10