Protocols for Collecting and Using Traffic Data in Bridge Design
This report documents and presents the results of a study to develop a set of protocols and methodologies for using available recent truck traffic data to develop and calibrate live load models for Load and Resistance Factor Design (LRFD) bridge design. The HL-93, a combination of the HS20 truck and lane loads, was developed using 1975 truck data from the Ontario Ministry of Transportation to project a 75-year live-load occurrence. Because truck traffic volume and weight have increased and truck configurations have become more complex, the 1975 Ontario data do not represent present U.S traffic loadings. The goal of this project, therefore, was to develop a set of protocols and methodologies for using available recent truck traffic data collected at different US sites and recommend a step-by-step procedure that can be followed to obtain live load models for LRFD bridge design. The protocols are geared to address the collection, processing and use of national weigh-in-motion (WIM) data to develop and calibrate vehicular loads for LRFD superstructure design, fatigue design, deck design and design for overload permits. These protocols are appropriate for national use or data specific to a state or local jurisdiction where the truck weight regulations and/or traffic conditions may be significantly different from national standards. The study also gives practical examples of implementing these protocols with recent national WIM data drawn from states/sites around the country with different traffic exposures, load spectra, and truck configurations.
- Record URL:
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309429627
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Authors:
- Sivakumar, Bala
- Ghosn, Michel
- Moses, Fred
- Publication Date: 2009
Language
- English
Media Info
- Media Type: Web
- Edition: Contractor Final Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 514p
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Serial:
- NCHRP Web-Only Document
- Issue Number: 135
- Publisher: Transportation Research Board
Subject/Index Terms
- TRT Terms: Bridge design; Calibration; Data collection; Live loads; Load and resistance factor design; Mathematical models; Traffic data; Truck traffic; Weigh in motion
- Uncontrolled Terms: Overload permits (Bridge passage); Protocols
- Subject Areas: Bridges and other structures; Data and Information Technology; Design; Highways; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01126449
- Record Type: Publication
- ISBN: 9780309429627
- Report/Paper Numbers: NCHRP Project 12-76
- Files: TRIS, TRB
- Created Date: Apr 13 2009 3:45PM