United States Department of Transportation
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.
i
Impact of Imperfections, Residual Stresses, Erection Fit-Up and Distortion on Curved Steel Bridge Service Life
-
2024-09-01
[PDF-8.20 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:Curved steel girders experience large deflection and rotations during construction and service that can intensify the web breathing effect. In addition, the curvature-induced lateral forces in slender curved webs can lead to critical web boundary stresses that do not typically occur in straight bridges. These distortion mechanisms are amplified by millions of traffic load cycles over the life of the bridge, and therefore, the goals of this research were to investigate the web behavior of composite curved steel bridges and define design methodology that could be applied to the fatigue limit state. The web stress development mechanisms from construction to service were addressed through parametric finite element modeling of a horizontally curved composite bridge. Three regions of high bending, high shear, and high bend and shear locations were studied. Also, a novel LiDAR structural monitoring (LSM) method was investigated and used to survey horizontally curved steel girders during construction.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
