Laser dynamic deflection survey vehicle

Abstract

The invention provides a laser dynamic deflection survey vehicle. The survey vehicle comprises a mobile measuring table, a measuring cross beam, a running wheel, a velocity measuring wheel, an accelerometer and a data acquiring and processing device. The laser dynamic deflection survey vehicle provided by the invention has the following advantages: according to the laser Doppler velocity measurement principle and the inertia measurement principle, during the driving process of the vehicle at a normal traffic velocity (15-80km/h), a plurality of laser Doppler vibration meters arranged in the front of loading wheels of the vehicle synchronously measure the relative movement velocity of various measuring points on a road surface; the instantaneous deflection deformation velocity of the road surface is obtained through inertia compensation calculation; and a dynamic deflection value of the road surface is obtained through inversion by utilizing a road layered elastic mechanical model and used for general investigation and assessment of the bearing capacity of a road network.

Description

technical field [0001] The invention relates to a deflection measurement vehicle, in particular to a laser dynamic deflection measurement vehicle, which can be widely used in the deflection measurement of highways, national and provincial highways, urban roads and airport runways in the traffic field. Background technique [0002] Since 1960, laser Doppler technology has attracted attention because it has high spatial and temporal resolution in measurement, does not touch the measurement object, does not disturb the measurement object, and can measure objects that are difficult to measure with the original speed measurement technology. In 1964, after YEH and CUMMIUS published the first paper on speed measurement by laser Doppler technology, this technology immediately received attention from all sides and a lot of theoretical analysis and experimental research were carried out, and remarkable results were achieved. After the 1970s, foreign manufacturers have begun to provide...

AI Technical Summary

Problems solved by technology

[0023] First of all, the current mainstream deflection testing methods are all less than 5 km / h in terms of speed, and there are shortcomings such as potential safety hazards and affecting normal traffic during the test; Continuous deflection test;

Images