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Title:
FATIGUE ANALYSIS AND DESIGN OF STEEL ORTHOTROPIC DECK FOR BRONX-WHITESTONE BRIDGE, NEW YORK CITY
Accession Number:
00984608
Abstract:
A description is given of the parametric study done to evaluate the structural behavior of the replacement steel orthotropic deck planned for the Bronx-Whitestone Bridge in New York City. A principal objective was to analyze the deck details for stress ranges that indicated sensitivity to fatigue cracking. On the basis of the analysis findings, important modifications were made to the preliminary deck design. These changes were primarily to reduce the maximum stresses in the diaphragms and ribs around the diaphragm cutouts--locations that traditionally have been prone to cracking, as observed on orthotropic decks on other bridges. After the completion of the deck design, a full-scale prototype deck measuring 48 by 37 ft was fabricated and subjected to a series of laboratory-controlled fatigue tests. Proper boundary conditions and loading procedures were created to produce stress ranges similar to those in the full bridge model. Laboratory test results correlated well with the computed stress ranges and demonstrated that the deck had outstanding fatigue resistance and could readily provide the 75-year design service life specified for the orthotropic deck.
Supplemental Notes:
This paper appears in Transportation Research Record No. 1892, Design of Structures 2004.
Monograph Accession #:
00984600
Corporate Authors:
Transportation Research Board
500 Fifth Street, NW
Washington, DC 20001 United States
Authors:
Fanjiang, G-N
Ye, Q
Fernandez, O N
Taylor, L R
Features:
Figures
(10)
; Photos
(1)
; References
(7)
; Tables
(3)
Subject Areas:
Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls
Created Date:
Jan 25 2005 12:00AM
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