A vehicle-mounted dynamic monitoring method for settlement deformation of high-speed railway bridge foundation

Abstract

The invention provides a vehicle-mounted dynamic monitoring method for settlement deformation of a high-speed railway bridge foundation. Camera shooting measurement equipment, inertial measurement equipment and photoelectric measurement equipment are integrated on a track inspection vehicle, and a system for synchronously measuring track inspection vehicle platform motion parameters (elevations, positions and attitudes) and track inspection vehicle / high-speed railway track relative postures is formed. According to the measurement system, synchronous compensation for the shaking amount of a track inspection vehicle platform relative to a track is carried out on the basis of measuring the elevation of the track inspection vehicle platform, the actual elevation of the track is obtained and compared with a reference value, and then the settlement volume of the track is obtained. Due to the fact that settlement of the high-speed railway track and settlement of the bridge foundation are synchronous and integrated, the settlement deformation of the high-speed railway bridge foundation is obtained through measurement of the track settlement volume.

Description

technical field [0001] The invention relates to the field of rail traffic dynamic monitoring, in particular to a vehicle-mounted dynamic measurement method for high-speed railway bridge foundation settlement. The invention realizes the measurement of high-speed railway bridge foundation settlement by measuring the settlement of high-speed railway tracks on a rail inspection vehicle. The method of the invention has high speed and high efficiency for measuring the settlement of the foundation of the high-speed railway bridge, greatly saves manpower and financial resources, and will bring a major technical change to the rapid and high-precision detection of the settlement of the foundation of the high-speed railway bridge. Background technique [0002] China has become the country with the most complete high-speed railway system technology, the strongest integration capability, the longest operating mileage, the highest operating speed and the largest construction scale in the w...

AI Technical Summary

Problems solved by technology

Chinese patent application (publication number 103419812A) discloses a method of railway subgrade settlement measurement based on the combination of camera, satellite and inertial measurement. The satellite positioning difference base station and the camera measurement mark base station are arranged at an interval of 5-10 kilometers. Between the camera measurement marks , to update the position, attitude and speed of the system by satellite / inertial depth fusion measurement, limited by the accuracy of satellite navigation, the elevation measurement accuracy is above 10 mm, which does not meet the measurement accuracy requirements of high-speed railway bridge foundation settlement of 2-5 mm

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