Evaluation of a New Double-Composite Simply-Supported Steel Bridge System

Mahmoud, Hussam N; Hassan, Emad M

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Evaluation of a New Double-Composite Simply-Supported Steel Bridge System

2023-03-01
By Mahmoud, Hussam N ; Hassan, Emad M

File Language:

English

Details

Creators:

Mahmoud, Hussam N ; Hassan, Emad M
Corporate Creators:

Mountain-Plains Consortium ; Colorado State University. Department of Civil and Environmental Engineering
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
Subject/TRT Terms:
Publication/ Report Number:

MPC-23-495
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Mountain-Plains Consortium
Abstract:

Built-up plate girders are considered a viable solution for long-span bridges due to their ability to meet the requirements for deflection limits. They are made up of flanges, webs, and stiffeners, which are typically welded together. The webs in plate girders are relatively thin, which requires the addition of transverse stiffeners to achieve the required shear capacity. The thin webs can also corrode through fairly quickly once corrosion begins. From a maintenance perspective, the added stiffeners to enhance the shear capacity can trap debris and moisture on the bottom flange. This can give rise to corrosion fatigue, which is not addressed in the AASHTO Design Specifications. On the other hand, the use of rolled beams in steel bridges can be very advantageous since the webs are an integral part of the flanges in that the beams are rolled out of one piece of steel and the webs are significantly thicker than built-up girder webs. Therefore, there is no need for transverse stiffeners to enhance the shear capacity of the web. From a maintenance and deterioration perspective, the beams have smoother lines with no stiffeners to trap moisture and debris on the bottom flange.
Format:

PDF
Funding:

MPC-508
Download URL:

https://rosap.ntl.bts.gov/view/dot/74317/dot_74317_DS1.pdf
File Type:

[PDF - 4.35 MB]
Collection(s):

University Transportation Centers
Main Document Checksum:

urn:sha256:a12f56e824e15cc25059ee090361a5951aec328760359a26f64035b4d8374747

File Language:

English

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