Method for measuring dynamic charges exerted on a road by the traffic.

摘要

1. A process for measuring the dynamic loads applied to a highway by the road traffic, in which a first rectilinear piezo-electric cable (1) is placed across the highway so that the wheels of the axles of the vehicles circulating on the highway (3) subject it, upon passage thereof, to a pressure to which it responds by the emission of an electrical (I1) and the corresponding dynamic load (F) is calculated from the parameters of said pulse, whilst the speed (V) of the vehicle is measured with the aid of the pulse (I2) delivered by a second rectilinear piezo-electric cable disposed on the highway at a certain distance (D) from said first cable (1), by determination of the duration of the time gap (t1-T0) separating the appearance of the pulses (I1, I2) respectively furnished by the two cables (1, 2) for the same wheel, said process being characterized by the fact that the dynamic load (F) being deduced from the area (A) of the contour, with respect to time, of the pulse delivered by the first cable (1) and from the speed (V) of the vehicle, by making the product of said area by said speed.