Invited Student Paper-A Procedure for Load Rating Reinforced Concrete Slab Bridges without Plans
In New Mexico, bridges without plans are currently an issue as in other states in the U.S. Standard techniques cannot be used for load rating due to the lack of design plans that contain necessary information such as material properties and the amount and location of the steel reinforcement. In this study, the state departments of transportation were surveyed regarding their load rating policies and procedures for planless bridges. Many states reported a significant amount of bridges without plans in particular reinforced concrete bridges and the rating approaches vary from state to state. This project was conducted for the New Mexico Department of Transportation (NMDOT) to develop an effective method to load rate reinforced concrete slab bridges without plans and obtain more representative estimates of load-carrying capacity. Twenty-three reinforced concrete slab bridges (simple and continuous span) were load rated and evaluated using simple analytical and non-destructive testing techniques. The procedure includes field measurement of the bridge dimensions and geometry, Windsor Probe testing of the concrete strength, scanning of the hidden steel reinforcement, generation of as-built drawings, and modeling the bridge with a load rating software. The procedure provided the NMDOT with as-built plans as well as more realistic load rating results reinforced concrete slab bridges without design plans. Comparisons are made with other state policies to illustrate the differences in the load ratings.
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Supplemental Notes:
- This paper was sponsored by TRB committee AHD30 Standing Committee on Structures Maintenance.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Cuaron, Alain M
- Jáuregui, David V
- Weldon, Brad D
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Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 17p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Load factor; Nondestructive tests; Plans (Drawings); Policy; Reinforced concrete bridges; State departments of transportation; Surveys
- Geographic Terms: New Mexico
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01626766
- Record Type: Publication
- Report/Paper Numbers: 17-01754
- Files: PRP, TRIS, TRB, ATRI
- Created Date: Feb 27 2017 9:26AM