Load Rating of Reinforced Concrete Slab Bridges Using Field Testing

Andrawes, Bassem; Colombani, Isaias A; Mirdad, Md Abdul H; Chen, Alexander J; Illinois Center for Transportation; University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering

doi:10.36501/0197-9191/24-025

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Load Rating of Reinforced Concrete Slab Bridges Using Field Testing

2024-12-01
By Andrawes, Bassem ; Colombani, Isaias A ; Mirdad, Md Abdul H ; ...

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Creators:

Andrawes, Bassem ; Colombani, Isaias A ; Mirdad, Md Abdul H ; Chen, Alexander J

Andrawes, Bassem ; Colombani, Isaias A ; Mirdad, Md Abdul H ; Chen, Alexander J Less -
Corporate Creators:

Illinois Center for Transportation ; University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering

Illinois Center for Transportation ; University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering Less -
Corporate Contributors:

Illinois Department of Transportation. Bureau of Research ; United States. Department of Transportation. Federal Highway Administration

Illinois Department of Transportation. Bureau of Research ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Bearing Capacity Bridge Decks Bridge Design Live Loads Load Transfer Reinforced Concrete Bridges
Publication/ Report Number:

FHWA-ICT-24-022
DOI:

https://doi.org/10.36501/0197-9191/24-025
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report 7/16/19–12/15/24
Corporate Publisher:

Illinois. Department of Transportation
Abstract:

Bridge load-rating analysis is typically used to assess the safe load-carrying capacity of bridges. However, in many cases, this analytical approach was proven to be too conservative, which leads to unnecessary bridge postings and road restrictions. In such cases, field testing is sought as a more reliable method for assessing the structural condition of the investigated bridge. This study focused on investigating the efficacy and practicality of performing load rating on reinforced concrete slab bridges in Illinois using two field testing methods—namely, diagnostic and proof load testing. The versatility of both methods was examined through testing six different slab bridges of varying characteristics and conditions. The tested bridges included single- and double-span bridges with span lengths varying between 20.5 ft and 32 ft, and skew angles varying between 0 and 55 degrees. The bridges also varied in age, with the first tested bridge’s construction dating as far back as 1925. The research assessed the type of instrumentation and data acquisition system used as well as the challenges associated with setting up these devices in the field. The analytical and field-based load-rating factors were compared for each bridge. The results showed the effectiveness of field testing in providing a relatively fast and reliable assessment of the structural condition of the investigated bridges. The methods adopted and developed in this research will assist the Illinois Department of Transportation in making future decisions about the condition of bridges in Illinois.
Format:

PDF
Funding:

R27-205
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha-512:a037026b6b91b49c3144aee0ffbe9018bc15bc824c1d3421c0d3b98a37edbb78644c40a0bc24133391cb8dd3881f4ee3df30e7fb371e5d8cce4e647077e2b9da
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https://rosap.ntl.bts.gov/view/dot/78893/dot_78893_DS1.pdf
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Load Rating of Reinforced Concrete Slab Bridges Using Field Testing

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