An Instrument System for Measuring Pavement Deflections Produced by Moving Traffic Loads
An Instrument System for Measuring Pavement Deflections Produced by Moving Traffic Loads
The report describes a feasibility study which has led to the development of a first generation instrument system for measuring transient pavement deflections. Accelerometers embedded in the pavement structure are employed to sense the basic motion. Dual analog integration is used to obtain and record output indications proportional to displacement. The circuit characteristics are such that transient vertical movements as small as 0.002 inch, or horizontal movements as small as 0.0005 inch, occurring within less than two seconds can be recorded. These characteristics enable the system to be used, with vehicles travelling at speeds above 20 mph, in any normal pavement structure. These performance characteristics could be altered, if desired, to accommodate the larger, longer movements which occur on bridge decks. (Author)
Document information
An Instrument System for Measuring Pavement Deflections Produced by Moving Traffic Loads
1972
52 pages
Report
No indication
English
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