Prediction method and device for roadbed compactness spatial distribution

Abstract

The invention discloses a prediction method and device for roadbed compactness spatial distribution, and belongs to the field of earthwork detection. The method comprises the following steps: S1, determining a rolling compaction research region on roadbed earthwork, carrying out the mesh generation of the research region, and obtaining a compaction parameter corresponding to each mesh; S2, when the vibratory roller carries out compaction quality continuous detection along the rolling belt, keeping the vibratory roller to run forwards and keeping the vibration frequency stable, collecting a vertical acceleration signal of a vibrating wheel on the vibratory roller, and processing the vertical acceleration signal by utilizing a semi-variation function method so as to obtain constraint random field parameters; S3, establishing a complete random field model corresponding to each compaction parameter by using a covariance matrix decomposition method, and performing mathematical transformation on the complete random field model based on a Kriging interpolation method to form a constrained random field model; and S4, predicting the spatial distribution characteristics of the roadbed soil compactness by using the constrained random field model. The construction management level, efficiency and construction quality can be improved.

Description

technical field [0001] The invention belongs to the field of earthwork detection, and more particularly relates to a prediction method and a prediction device for the spatial distribution of roadbed compaction degree. Background technique [0002] Highway engineering has made great contributions to strengthening regional connections and promoting regional economic development. The development of regional economy has promoted the development of passenger and freight transportation, and high-speed and heavy-duty traffic has higher requirements for the quality of road construction. However, some highways may have quality problems in a short period of time after they are completed. The main reason is that the compaction quality lacks process control during the construction process. The problem of replacement; the compaction quality parameters during the construction process cannot be obtained in real time. Once there is a compaction quality problem, it will be difficult and cos...

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a prediction method and a prediction device for the spatial distribution of the degree of subgrade compaction. This solves the technical problems of low construction management efficiency and poor construction quality of highway construction caused by large spatial variability of compaction quality parameters on the rolling surface

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