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A roadbed compaction evaluation method, device, equipment and readable storage medium

An evaluation method and roadbed technology, which is applied to measuring devices, instruments, and the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., can solve problems such as the inability to separate and identify the fundamental and harmonic parts of acceleration signals, and the inability to evaluate roadbed compaction. Achieve the effect of improving adaptability and precision

Active Publication Date: 2022-03-22
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing continuous compaction control theory only unilaterally considers the variation of the frequency domain amplitudes of the harmonics and fundamental waves of the vibration signal during the vibration compaction process, and cannot separate the fundamental and harmonic parts of the acceleration signal. and identification, it is impossible to obtain an accurate subgrade compaction evaluation through continuous compaction control theory

Method used

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  • A roadbed compaction evaluation method, device, equipment and readable storage medium
  • A roadbed compaction evaluation method, device, equipment and readable storage medium
  • A roadbed compaction evaluation method, device, equipment and readable storage medium

Examples

Experimental program
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Embodiment 1

[0054] This embodiment provides a roadbed compaction evaluation method.

[0055] see figure 1 , the figure shows that the method includes step S100, step S200, step S300 and step S400.

[0056] S100. Obtain the time-history curve of the vertical acceleration signal of the vibrating wheel. The time-history curve of the acceleration signal is collected by an acceleration sensor arranged on the vibrating wheel of the road roller. ;

[0057] S200. Divide the acceleration signal time-history curve into a plurality of sub-curves;

[0058] Specifically, this step is to divide the acceleration signal time-history curve collected during a subgrade compaction process into several sub-curves, so as to be conveniently brought into the subsequent evaluation index algorithm for calculation.

[0059] Specifically, this step includes step S210 and step S220.

[0060] S210. Obtain the length of the detection unit for roadbed compaction and the total length of the compacted roadbed;

[006...

Embodiment 2

[0100] Such as Figure 6 As shown, this embodiment provides a roadbed compaction evaluation device, see Figure 6 This unit includes:

[0101] The first acquisition unit 1 is used to obtain the vertical acceleration signal time history curve of the vibrating wheel, and the acceleration signal time history curve is collected by an acceleration sensor arranged on the vibrating wheel of the road roller;

[0102] A splitting unit 2 is used to divide the acceleration signal time-history curve into a plurality of sub-curves;

[0103] A decomposing unit 3, configured to decompose each sub-curve to obtain first information, the first information includes sub-information corresponding to each sub-curve, and the sub-information includes a plurality of components;

[0104] The evaluation unit 4 is configured to calculate roadbed compaction evaluation information according to each sub-curve, the first information and roadbed compaction detection information.

[0105] Wherein, optionall...

Embodiment 3

[0128] Corresponding to the above method embodiment, this embodiment also provides a roadbed compaction evaluation device, and the roadbed compaction evaluation device described below and the roadbed compaction evaluation method described above can be referred to in correspondence.

[0129] Figure 7 It is a block diagram of a roadbed compaction evaluation device 800 shown according to an exemplary embodiment. Such as Figure 7 As shown, the roadbed compaction evaluation device 800 may include: a processor 801 and a memory 802 . The roadbed compaction evaluation device 800 may also include one or more of a multimedia component 803 , an input / output (I / O) interface 804 , and a communication component 805 .

[0130]Wherein, the processor 801 is used to control the overall operation of the roadbed compaction evaluation equipment 800, so as to complete all or part of the steps in the above roadbed compaction evaluation method. The memory 802 is used to store various types of da...

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Abstract

The invention provides a roadbed compaction evaluation method, device, equipment and readable storage medium, which relate to the field of roadbed compaction. By introducing the variational mode decomposition algorithm into the field of roadbed compaction, the variational mode decomposition algorithm is used to analyze the vibratory road roller. The time-history curve of the acceleration signal on the vibration wheel is processed to obtain a series of variational modal functions reflecting the local characteristics of the vibration signal, which can effectively identify the fundamental wave and harmonic in the acceleration signal of the vibration wheel of the vibratory roller, and based on the decomposition results The roadbed compaction evaluation information can be obtained more accurately.

Description

technical field [0001] The present invention relates to the technical field of high-speed railway foundation compaction, in particular, to a roadbed compaction evaluation method, device, equipment and a readable storage medium. Background technique [0002] In recent years, the compaction quality control of subgrade structures has gradually developed from traditional methods (such as foundation coefficient K30, dynamic deformation modulus Evd) to continuous compaction control (CCC). There is a certain relationship between the degree of distortion of the acceleration signal and the degree of compaction of the filler. The CMV index widely used at home and abroad mainly evaluates the compaction quality of the packed packing by Fourier transforming the vertical acceleration signal of the vibrating wheel and the amplitude ratio of the first harmonic in the frequency spectrum to the fundamental wave. However, the existing continuous compaction control theory only unilaterally con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04G01N29/44
CPCG01N29/045G01N29/4472G01N2291/023
Inventor 杨长卫岳茂张志方张良苏珂童心豪
Owner SOUTHWEST JIAOTONG UNIV