FEASIBILITY OF UTILIZING HIGHWAY BRIDGES TO WEIGH VEHICLES IN MOTION. STRAIN GAGES AT BRIDGE BEARINGS
This report provides the theoretical background and experimental data gained in the study of stresses to which bridges are subject, as so much of this background is directly applicable to this feasibility study. A method for weighing vehicles in motion using highway structures is provided, together with the theoretical analysis and justification for the proposed procedure. An instrumentation system is selected to provide automated processing of the high volume of data that would require analysis. The information provided by the system includes traffic data such as headway, identification of the type of vehicle, number of axles per vehicle, axle spacing, headway between vehicles and time of arrival. Weight data such as gross vehicle weight, individual axle weight and dynamic vehicle loads are provided for vehicles weighing over 10,000 lbs. It is recommended that the basic concept be subject to field tests to optimize the data processing circuitry before A/D conversion and computer programming are committeed. This report is the third in a series. The others in the series are: 75-33, Exotic Sensors on the Bridge Deck, Not yet available; 75-34, Strain Gages on Main Longitudinal Members, Not yet available.
- Sponsored by DOT and FHWA.
ASE, Incorporated5090 Central Highway
Pennsauken, NJ United States 08109
- Siegel, H J
- Publication Date: 1974-11
- Pagination: 171 p.
- TRT Terms: Bridge bearings; Gross vehicle weight; Highway bridges; Information processing; Instrumentation; Motion; Motor vehicles; Strain gages; Stresses; Theory
- Uncontrolled Terms: Moving vehicles
- Subject Areas: Bridges and other structures; Highways; Operations and Traffic Management;
- Accession Number: 00139798
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: FHWA-RD-75- 35 Final Rpt., FCP-35F7-062
- Contract Numbers: DOT-FH-11-8470
- Files: TRIS, USDOT
- Created Date: Oct 6 1976 12:00AM