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:
[+]
Barge Carriers Barges--Accidents Bridge Construction Bridge Design Bridges Bridges--Accidents Bridges--Design And Construction Crashes
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.


Format:
PDF
Funding:
BD-545 RPWO 85
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:cc8eea11bd1a611540679ba52cefff8abdd0a72bb5b653681fcc6b9467ee6d10
Download URL:
https://rosap.ntl.bts.gov/view/dot/17470/dot_17470_DS1.pdf
File Type:

Supporting Files

• No Additional Files

More +