CN106291708B - A kind of method and device for correcting data - Google Patents
A kind of method and device for correcting data Download PDFInfo
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- CN106291708B CN106291708B CN201610801978.7A CN201610801978A CN106291708B CN 106291708 B CN106291708 B CN 106291708B CN 201610801978 A CN201610801978 A CN 201610801978A CN 106291708 B CN106291708 B CN 106291708B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/362—Effecting static or dynamic corrections; Stacking
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/50—Corrections or adjustments related to wave propagation
- G01V2210/53—Statics correction, e.g. weathering layer or transformation to a datum
Abstract
The present invention provides a kind of method and device of data correction, the method includes：Based on the length that Test bench exposes on Rock And Soil surface, the corresponding finite element structure model of Test bench under each length is established；Using the nodes of locations of pedestal placement sensor as simulation monitoring node；Preset external drive load is applied to the bottom node group on the corresponding finite element structure model, obtains each bottom node vibration data and each simulation monitoring point vibration data；Each data correction function is fitted according to each bottom node vibration data and each simulation monitoring point vibration data；It is modified according to the vibration data that each data correction function pair pedestal sensor measures.So, vibration data measured by pedestal sensor can be modified according to each data correction function, the vibration data for obtaining practical measuring point on Rock And Soil is solved, so as to improve the precision of data and accuracy, more can accurately reflect practical measuring point vibration performance on Rock And Soil.
Description
Technical field
The present invention relates to ground technical field of measurement and test more particularly to a kind of method and devices for correcting data.
Background technology
In the wild in Rock And Soil vibration-testing, usually the vibration signal of ground is acquired using sensor is tested.
In the prior art, on measuring point vibration-testing sensor fixed form, it is direct that gypsum, 502 glue are usually used
Sensor is fixed on to tested Rock And Soil test position.Such method, there are four shortcomings：First, it is more loose for earth's surface
Scattered rock soil medium, fixed effect are bad；Second, for there is the point position of certain coating thickness, need to excavate to measuring point position
It puts, increases the additional work amount of test；Third, for particular surroundings, such as tunnel containing ponding, earth's surface exist short-term or normal
The side wall of the environment of year ponding (such as depression, streams) unsuitable working sensor, tunnel and Rock And Soil is first-class to be difficult to dispose biography
The environment of sensor, the normal work of sensor are obstructed；4th, for needing to test the vibration signal at Rock And Soil certain depth,
Sensor is directly fixed in measuring point earth's surface if not being excavated at measuring point, and measured vibration signal can not really reflect measuring point
The signal at place.Also, during the vibration data generated for bursting work is acquired, since blasting vibration acts on lower base
The dynamic response that holder structure generates so that measured blasting vibration data are with having centainly inclined at actual monitoring object's position
Difference influences the accuracy of data.
Based on this, at present there is an urgent need for the modification method and device of a kind of data, to solve the above problem of the prior art.
Invention content
In view of the problems of the existing technology, an embodiment of the present invention provides it is a kind of correct data method and device, with
It solves in the prior art, when using the vibration signal for the sensor measurement Rock And Soil being fixed on pedestal, due to blasting vibration
There are certain deviation at data and actual monitoring object's position, the technical issues of accuracy of data is caused to cannot ensure.
The present invention provides a kind of method for correcting data, the method includes
Based on the length that Test bench exposes on Rock And Soil surface, the corresponding finite element knot of Test bench under each length is established
Structure model；
Using the nodes of locations of pedestal placement sensor as simulation monitoring node；
Preset external drive load is applied to the bottom node group on corresponding finite element structure model, is obtained
Each bottom node vibration data and each simulation monitoring point vibration data；
Each data correction function is fitted according to each bottom node vibration data and each simulation monitoring point vibration data；
It is modified according to the vibration data that each data correction function pair pedestal sensor measures；Wherein, the data are repaiied
Positive function specifically includes：Frequency correction function and vibration velocity amplitude correction function.
In said program, establish the corresponding finite element structure model of Test bench under each height and specifically include：
According to the actual size of the pedestal all parts, established using dynamic finite element software ANSYS/LS-DYNA each
The corresponding finite element structure model of Test bench under height；Wherein,
The pedestal includes：
Fixed base station, one end of the fixed base station is connected with movable plate；
High bar is connect, described one end for connecing high bar is connected with the other end of the fixed base station；
Sensor, the sensor are mounted on the fixed base station；
Drill steel, one end of the drill steel are connected with the other end for connecing high bar.
In said program, when the length that the Test bench exposes in Rock And Soil is 25cm, the frequency corrects letter
Number is specially：fX=0.489fXM 1.1951、fY=0.489fYM 1.1951And fZ=1.6157fZM 0.9354；
The vibration velocity amplitude correction function is specially：vX=0.4185VXM 1.1538、vY=0.4898VYM 0.961And vZ=
0.9958VZM 0.9982；Wherein,
The fxFor the practical master oscillator frequenc of measuring point in the X direction, the fXMFor the sensing data in the X direction
Master oscillator frequenc；The fyFor the practical master oscillator frequenc of measuring point in the Y direction, the fYMFor the sensing data in the Y direction
Master oscillator frequenc；The fzFor the practical master oscillator frequenc of measuring point in z-direction, the fZMFor the master of practical measuring point in z-direction
Vibration frequency；
The vxFor the actual vibration velocity amplitude of measuring point in the X direction, the VXMIt is the sensing data in X-direction
On vibration velocity amplitude；The vyFor the actual vibration velocity amplitude of measuring point in the Y direction, the VYMFor the sensor number
According to vibration velocity amplitude in the Y direction；The vzFor the actual vibration velocity amplitude of measuring point in z-direction, the VZMFor institute
State the vibration velocity amplitude of sensing data in z-direction.
In said program, when the length that the Test bench exposes in Rock And Soil is 30cm, the frequency corrects letter
Number is specially：fX=0.7272fXM 1.1332、fY=2.3405fYM 0.8134And fZ=1.3762fZM 0.9894；
The vibration velocity amplitude correction function is specially：vX=0.2181VXM 1.6255、vY=0.3509VYM 1.2087And vZ
=0.9953VZM 0.9961。
In said program, when the length that the Test bench exposes in Rock And Soil is 35m, the frequency correction function
Specially：fX=2.2699fXM 0.8643、fY=2.1075fYM 0.8949And fZ=0.8069fZM 1.1271；
The vibration velocity amplitude correction function is specially：vX=0.0902VXM 2.2975、vY=0.2412VYM 1.559And vZ=
0.9968VZM 0.9934。
In said program, when the length that the Test bench exposes in Rock And Soil is 40m, the frequency correction function
Specially：fX=4.8804fXM 0.7062、fY=3.2278fYM 0.7639And fZ=1.3762fZM 0.9894；
The vibration velocity amplitude correction function is specially：vX=0.0665VXM 2.6674、vY=0.2127VYM 1.743And vZ=
0.9996VZM 0.9906。
In said program, when the length that the Test bench exposes in Rock And Soil is 45m, the frequency correction function
Specially：fX=12.601fXM 0.435、fY=3.5085fYM 0.749And fZ=1.3762fZM 0.9849；
The vibration velocity amplitude correction function is specially：vX=0.0794VXM 2.9451、vY=0.1738VYM 2.0956And vZ
=1.0032VZM 0.9848。
In said program, when the length that the Test bench exposes in Rock And Soil is 50m, the frequency correction function
Specially：fX=10.822fXM 0.4837、fY=3.3109fYM 0.7379And fZ=1.3762fZM 0.9849；
The vibration velocity amplitude correction function is specially：vX=0.0539VXM 3.7508、vY=0.1628VYM 2.4078And vZ
=1.0044VZM 0.9824。
In said program, when the length that the Test bench exposes in Rock And Soil is 55m, the frequency correction function
Specially：fX=10.068fXM 0.4822、fY=4.7793fYM 0.6468；
The vibration velocity amplitude correction function is specially：vX=0.1545VXM 3.3643、vY=0.352VYM 1.9237And vZ=
0.989VZM 0.984。
The present invention also provides a kind of device for correcting data, described device includes：
Unit is established, the unit of establishing is used for the length exposed based on Test bench on Rock And Soil surface, establishes each length
The lower corresponding finite element structure model of Test bench of degree；
Applying unit, the applying unit are used to apply preset external drive load to the corresponding finite element knot
In bottom node group on structure model, each bottom node vibration data and each simulation monitoring point vibration data are obtained；
Fitting unit, the fitting unit are used for according to each bottom node vibration data and each simulation monitoring point vibration data
It is fitted each data correction function；
Amending unit, the amending unit are used for the vibration data measured according to each data correction function pair pedestal sensor
It is modified；Wherein, the data correction function specifically includes：Frequency correction function and vibration velocity amplitude correction function；Institute
State the nodes of locations that simulation monitoring node places sensor for the pedestal.
The present invention provides a kind of method and device of data correction, the method includes：Based on Test bench in ground
The length that body surface is showed out establishes the corresponding finite element structure model of Test bench under each length；It is placed and sensed with the pedestal
The nodes of locations of device is as simulation monitoring node；Preset external drive load is applied to corresponding finite element structure model
Bottom node group on, obtain each bottom node vibration data and each simulation monitoring point vibration data；It is shaken according to each bottom node
Dynamic data and each simulation monitoring point vibration data are fitted each data correction function；Rock And Soil is surveyed according to each data correction function pair
The vibration data of different depth is modified；Wherein, the data correction function specifically includes：Frequency correction function and vibration speed
Spend amplitude correction function.In this way, the vibration data measured by pedestal sensor can be repaiied according to each data correction function
Just, the vibration data for obtaining practical measuring point on Rock And Soil is solved, it, more can be accurately so as to improve the precision of data and accuracy
Reflect practical measuring point vibration performance on Rock And Soil.
Description of the drawings
Fig. 1 is the method flow schematic diagram of amendment data that the embodiment of the present invention one provides；
Fig. 2 is the overall structure diagram of pedestal that the embodiment of the present invention one provides；
Fig. 3 is the vertical view of movable plate provided in an embodiment of the present invention；
Fig. 4 is the vertical view of fixed base station provided in an embodiment of the present invention；
Fig. 5 is the side view provided in an embodiment of the present invention for connecing high bar；
Fig. 6 is the vertical view provided in an embodiment of the present invention for connecing high bar；
Fig. 7 is the side view of drill steel provided in an embodiment of the present invention；
Fig. 8 is the vertical view of drill steel provided in an embodiment of the present invention；
Fig. 9 is the vertical view provided in an embodiment of the present invention for connecing high cylinder；
Figure 10 is the vertical view of force application part provided in an embodiment of the present invention；
Figure 11 is the apparatus structure schematic diagram provided by Embodiment 2 of the present invention for correcting data；
Figure 12 is the schematic diagram that the pedestal that the embodiment of the present invention three provides is fixed on decayed rock.
Specific embodiment
In order to improve the precision of test data and accuracy so that test data more can accurately reflect practical measuring point
Vibration performance, the present invention provides a kind of method and device of data correction, the method includes：Based on Test bench in ground
The length exposed in body establishes the corresponding finite element structure model of Test bench under each height；Sensor is placed with the pedestal
Nodes of locations as simulation monitoring node；Preset external drive load is applied to corresponding finite element structure model
In bottom node group, each bottom node vibration data and each simulation monitoring point vibration data are obtained；It is vibrated according to each bottom node
Data and each simulation monitoring point vibration data are fitted each data correction function；It is surveyed according to each data correction function pair pedestal sensor
The vibration data obtained is modified；Wherein, the data correction function specifically includes：Frequency correction function and vibration velocity amplitude
Correction function.
Technical scheme of the present invention is described in further detail below by drawings and the specific embodiments.
Embodiment one
The present embodiment provides a kind of method of data correction, as shown in Figure 1, the described method comprises the following steps：
Step 110, it is corresponding to establish Test bench under each length for the length exposed based on Test bench on Rock And Soil surface
Finite element structure model.
In this step, according to the actual size of the pedestal all parts, dynamic finite element software ANSYS/LS- is utilized
DYNA establishes the corresponding finite element structure model of Test bench under each height；Material uses Soild164 dividing elements in model
For Lagrange grids.To ensure that grid is uniform, all size of mesh opening are divided into 0.2cm, calculate using cm-g-us units
System.Wherein, for the pedestal hardware configuration material using Q235 common carbon structural steels, material constitutive model takes MAT_
ELASTIC, design parameter are as follows：Density 7.85g/cm3, elasticity modulus 200GPa, Poisson's ratio 0.3, tensile strength 420MPa.
The length that the pedestal exposes in Rock And Soil can include：25cm、30cm、35cm、40cm、45cm、50cm、
55cm。
Wherein, as described in Figure 2, the pedestal includes fixed base station, and movable plate 1 connects high bar 2, sensor 3, drill steel 4；Its
In,
One end of the fixed base station is connected with movable plate 1；Described one end for connecing high bar 2 is another with the fixed base station
End is connected；The sensor 3 is mounted on the fixed base station, for testing the vibration signal of Rock And Soil；The one of the drill steel 4
End is connected with the other end for connecing high bar 2, for the pedestal to be screwed in the Rock And Soil.The sensor 3 is passed for vibration measuring
Sensor.
Specifically, referring to Fig. 2, the fixed base station includes：Fixed plate 5, matrix 6 and connect high cylinder 7；5 edge of fixed plate
Diagonal is disposed with the first screw rod, and first screw rod includes two, one jiao of the fixed plate 5 by the first screw rod with it is described
One jiao of movable plate 1 is connected, and another angle of the fixed plate 5 is connected by the first screw rod with another angle of the movable plate 1；Institute
The one end for stating matrix 6 is connected by welding with the other end of the fixed plate 5, and the other end of the matrix 6 passes through screw thread and institute
It states and connects one end of high bar 2 and be connected.One end of the drill steel 4 is connect high cylinder 7 and is connected with the other end for connecing high bar 2 by described.
Wherein, referring to Fig. 3, slot hole is offered on the movable plate 1, for dredging the wiring of the sensor 3；This implementation
In example, a diameter of 2cm in the slot hole, thickness 0.5cm；The center of the movable plate 1, which is enclosed, meets a height of 0.5cm, and thickness is
0.2cm, the movable plate 1 are additionally provided with the aileron of a length of 6cm of inner edge, with the displacement of limiting sensor 3.In other embodiment, institute
State diameter, the thickness in slot hole；Height, thickness, the aileron length of side are enclosed in the center of the movable plate 1 to be set according to actual needs
It is fixed.
Referring to Fig. 5, slot hole is offered on the fixed base station, for dredging the wiring of the sensor 3；The slot hole
A diameter of 2cm, thickness 0.5cm.
Referring to Fig. 6 and Fig. 7, described one end for connecing high bar 2 is additionally provided with three screw holes and screw thread, in the present embodiment, the spiral shell
A diameter of 2.5cm of line, the outer diameter for connecing high bar 2 are 5cm.Described connect is additionally provided with scale mark on high bar 2.Other embodiment
In, the diameter of thread for connecing high bar 2 and outer diameter can be set according to actual needs.
Referring to Fig. 8 and Fig. 9, one end of the drill steel 4 also is provided with three screw holes and screw thread, in the present embodiment, the drill steel 4
Length for 25cm, the conical section of the other end is 10cm.Scale mark is also equipped on the drill steel 4.Other embodiment
In, the length of the drill steel 4 and the length of conical section can be set according to actual needs.
Referring to Figure 10, in the present embodiment, the length for connecing high cylinder 7 is 5cm, internal diameter 1.5cm, outer diameter 5cm；Other
In embodiment, length, internal diameter and outer diameter that the drill steel connects high cylinder 7 can be set according to actual needs.
Here, in order to measure the vibration signal of Rock And Soil under different coating thicknesses or depth of accumulated water, it is described connect high bar 2 can
It is multiple to include, and the length for respectively connecing high bar 2 is different.
Step 111, using the nodes of locations of pedestal placement sensor as simulation monitoring node.
In this step, in the finite element structure model of foundation, using the pedestal place sensor nodes of locations as
Monitoring node is simulated, can more realistically simulate actual test environment so that simulation monitoring node data being capable of actual response reality
Sensing data in the test environment of border.
Step 112, preset external drive load is applied to the bottom on the corresponding finite element structure model and saved
In point group, each bottom node vibration data and each simulation monitoring point vibration data are obtained.
In this step, in order to can be with the vibration data of Rock And Soil in actual response actual test environment, by preset outside
Excitation load applies to the bottom node group on the corresponding finite element structure model, obtains each bottom node vibration data
And each simulation monitoring point vibration data.
Wherein, external drive load specifically includes：The master of 20Hz, 30Hz, 40Hz, 50Hz, 60Hz, 80Hz, 100Hz shake frequently
Rate；The vibration velocity amplitude of 1cm/s, 2cm/s, 3cm/s, 4cm/s, 5cm/s, 6cm/s, 7cm/s.The master oscillator frequenc and vibration velocity amplitude
49 groups of excitation loads are combined with each other into apply to the finite element structure model of corresponding each exposed length, for example,
20Hz forms seven groups of excitation loads with 1cm/s, 2cm/s, 3cm/s, 4cm/s, 5cm/s, 6cm/s, 7cm/s respectively, and by this group
Excitation load applies to exposed length as on 25cm finite element structure models, and so on, share 49 groups of excitation loads.
Step 113, each data correction letter is fitted according to each bottom node vibration data and each simulation monitoring point vibration data
Number.
In this step, when loads being encouraged to be respectively applied to the finite element structure mould that exposed length is 25cm 49 groups of numbers
When in type, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and the vibration of simulation monitoring point
Data.Portion's node vibrations data and simulation monitoring point vibration data are fitted according to least square method, get exposing length
Correction function when spending for 25cm, the data correction function specifically include：Frequency correction function and vibration velocity amplitude correction
Function, it is specific as follows：
The frequency correction function is specially：fX=0.489fXM 1.1951、fY=0.489fYM 1.1951And fZ=
1.6157fZM 0.9354；
The vibration velocity amplitude correction function is specially：vX=0.4185VXM 1.1538、vY=0.4898VYM 0.961And vZ=
0.9958VZM 0.9982；Wherein,
The fxFor the practical master oscillator frequenc of measuring point in the X direction, the fXMFor the sensing data in the X direction
Master oscillator frequenc；The fyFor the practical master oscillator frequenc of measuring point in the Y direction, the fYMFor the sensing data in the Y direction
Master oscillator frequenc；The fzFor the practical master oscillator frequenc of measuring point in z-direction, the fZMFor the master of practical measuring point in z-direction
Vibration frequency；
The vxFor the actual vibration velocity amplitude of measuring point in the X direction, the VXMIt is the sensing data in X-direction
On vibration velocity amplitude；The fzFor the actual vibration velocity amplitude of measuring point in the Y direction, the VYMFor the sensor number
According to vibration velocity amplitude in the Y direction；The vzFor the actual vibration velocity amplitude of measuring point in z-direction, the VZMFor institute
State the vibration velocity amplitude of sensing data in z-direction.
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 30cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.Portion's node vibrations data and simulation monitoring point vibration data are fitted according to least square method, get exposed length
Correction function during for 30cm, it is specific as follows：
When the length that the Test bench exposes in Rock And Soil is 30cm, the frequency correction function is specially：fX
=0.7272fXM 1.1332、fY=2.3405fYM 0.8134And fZ=1.3762fZM 0.9894；
The vibration velocity amplitude correction function is specially：vX=0.2181VXM 1.6255、vY=0.3509VYM 1.2087And vZ
=0.9953VZM 0.9961。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 35cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.Portion's node vibrations data and simulation monitoring point vibration data are fitted according to least square method, get exposed length
Correction function during for 35cm, it is specific as follows：
The frequency correction function is specially：fX=2.2699fXM 0.8643、fY=2.1075fYM 0.8949And fZ=
0.8069fZM 1.1271；
The vibration velocity amplitude correction function is specially：vX=0.0902VXM 2.2975、vY=0.2412VYM 1.559And vZ=
0.9968VZM 0.9934。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 40cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.Portion's node vibrations data and simulation monitoring point vibration data are fitted according to least square method, get exposed length
Correction function during for 40cm, it is specific as follows：
The frequency correction function is specially：fX=4.8804fXM 0.7062、fY=3.2278fYM 0.7639And fZ=
1.3762fZM 0.9894；
The vibration velocity amplitude correction function is specially：vX=0.0665VXM 2.6674、vY=0.2127VYM 1.743And vZ=
0.9996VZM 0.9906。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 45cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.Portion's node vibrations data and simulation monitoring point vibration data are fitted according to least square method, get exposed length
Correction function during for 45cm, it is specific as follows：
The frequency correction function is specially：fX=12.601fXM 0.435、fY=3.5085fYM 0.749And fZ=
1.3762fZM 0.9849；
The vibration velocity amplitude correction function is specially：vX=0.0794VXM 2.9451、vY=0.1738VYM 2.0956And vZ
=1.0032VZM 0.9848。
Correspondingly, when by the vibration velocity amplitude of the master oscillator frequenc of 80Hz and 6cm/s for one group of excitation load apply to expose grow
When spending on the finite element structure model for 50cm, 49 groups of result of calculations can be obtained, the result of calculation is shaken including bottom node
Dynamic data and simulation monitoring point vibration data.According to least square method to portion's node vibrations data and simulation monitoring point vibration data
It is fitted, correction function when getting exposed length as 50cm is specific as follows：
The frequency correction function is specially：fX=10.822fXM 0.4837、fY=3.3109fYM 0.7379And fZ=
1.3762fZM 0.9849；
The vibration velocity amplitude correction function is specially：vX=0.0539VXM 3.7508、vY=0.1628VYM 2.4078And vZ
=1.0044VZM 0.9824。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 50cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.Portion's node vibrations data and simulation monitoring point vibration data are fitted according to least square method, get exposed length
Correction function during for 55cm, it is specific as follows：
The frequency correction function is specially：fX=10.068fXM 0.4822、fY=4.7793fYM 0.6468；
The vibration velocity amplitude correction function is specially：vX=0.1545VXM 3.3643、vY=0.352VYM 1.9237And vZ=
0.989VZM 0.984。
Step 114, the vibration data measured according to each data correction function pair pedestal sensor is modified.
It, can be according to each data correction function pair pedestal sensor after each data correction function obtains in this step
The vibration data measured is modified.
The method provided in this embodiment for correcting data based on the length that Test bench exposes on Rock And Soil surface, is established
The corresponding finite element structure model of Test bench under each length, according under different length according to each bottom node vibration data and
Each simulation monitoring point vibration data is fitted each data correction function；Pedestal sensor can be surveyed according to each data correction function
The vibration data obtained is modified, and the vibration data for obtaining practical measuring point on Rock And Soil is solved, so as to improve the precision of data
And accuracy, it more can accurately reflect practical measuring point vibration performance.
Embodiment two
Corresponding to embodiment one, the present embodiment provides a kind of devices for correcting data, as shown in figure 11, described device packet
It includes：Establish unit 101, applying unit 102, fitting unit 103, amending unit 104；Wherein,
The unit 101 of establishing is used for the length exposed based on Test bench on Rock And Soil surface, establishes under each length and surveys
Try the corresponding finite element structure model of pedestal.
Specifically, it is described to establish actual size of the unit 101 according to the pedestal all parts, it is soft using dynamic finite element
Part ANSYS/LS-DYNA establishes the corresponding finite element structure model of Test bench under each height；Material uses in model
Soild164 dividing elements are Lagrange grids.To ensure that grid is uniform, all size of mesh opening are divided into 0.2cm, calculate
Using the cm-g-us system of units.Wherein, the pedestal hardware configuration material is using Q235 common carbon structural steels, material constitutive
Model takes MAT_ELASTIC, and design parameter is as follows：Density 7.85g/cm3, elasticity modulus 200GPa, Poisson's ratio 0.3, tension
Intensity 420MPa.
The length that the pedestal exposes in Rock And Soil can include：25cm、30cm、35cm、40cm、45cm、50cm、
55cm。
Wherein, as described in Figure 2, the pedestal includes fixed base station, and movable plate 1 connects high bar 2, sensor 3, drill steel 4；Its
In,
One end of the fixed base station is connected with movable plate 1；Described one end for connecing high bar 2 is another with the fixed base station
End is connected；The sensor 3 is mounted on the fixed base station, for testing the vibration signal of Rock And Soil；The one of the drill steel 4
End is connected with the other end for connecing high bar 2, for the pedestal to be screwed in the Rock And Soil.The sensor 3 is passed for vibration measuring
Sensor.
Specifically, referring to Fig. 2, the fixed base station includes：Fixed plate 5, matrix 6 and connect high cylinder 7；5 edge of fixed plate
Diagonal is disposed with the first screw rod, and first screw rod includes two, one jiao of the fixed plate 5 by the first screw rod with it is described
One jiao of movable plate 1 is connected, and another angle of the fixed plate 5 is connected by the first screw rod with another angle of the movable plate 1；Institute
The one end for stating matrix 6 is connected by welding with the other end of the fixed plate 5, and the other end of the matrix 6 passes through screw thread and institute
It states and connects one end of high bar 2 and be connected.One end of the drill steel 4 is connect high cylinder 7 and is connected with the other end for connecing high bar 2 by described.
Wherein, referring to Fig. 3, slot hole is offered on the movable plate 1, for dredging the wiring of the sensor 3；This implementation
In example, a diameter of 2cm in the slot hole, thickness 0.5cm；The center of the movable plate 1, which is enclosed, meets a height of 0.5cm, and thickness is
0.2cm, the movable plate 1 are additionally provided with the aileron of a length of 6cm of inner edge, with the displacement of limiting sensor 3.In other embodiment, institute
State diameter, the thickness in slot hole；Height, thickness, the aileron length of side are enclosed in the center of the movable plate 1 to be set according to actual needs
It is fixed.
Referring to Fig. 5, slot hole is offered on the fixed base station, for dredging the wiring of the sensor 3；The slot hole
A diameter of 2cm, thickness 0.5cm.
Referring to Fig. 6 and Fig. 7, described one end for connecing high bar 2 is additionally provided with three screw holes and screw thread, in the present embodiment, the spiral shell
A diameter of 2.5cm of line, the outer diameter for connecing high bar 2 are 5cm.Described connect is additionally provided with scale mark on high bar 2.Other embodiment
In, the diameter of thread for connecing high bar 2 and outer diameter can be set according to actual needs.
Referring to Fig. 8 and Fig. 9, one end of the drill steel 4 also is provided with three screw holes and screw thread, in the present embodiment, the drill steel 4
Length for 25cm, the conical section of the other end is 10cm.Scale mark is also equipped on the drill steel 4.Other embodiment
In, the length of the drill steel 4 and the length of conical section can be set according to actual needs.
Referring to Figure 10, in the present embodiment, the length for connecing high cylinder 7 is 5cm, internal diameter 1.5cm, outer diameter 5cm；Other
In embodiment, length, internal diameter and outer diameter that the drill steel connects high cylinder 7 can be set according to actual needs.
Here, in order to measure the vibration signal of Rock And Soil under different coating thicknesses or depth of accumulated water, it is described connect high bar 2 can
It is multiple to include, and the length for respectively connecing high bar 2 is different.
After the finite element structure model foundation of pedestal is good, the applying unit 102 is used for preset external drive
Load applies to the bottom node group on the corresponding finite element structure model, obtains each bottom node vibration data and each
Simulate monitoring point vibration data；
Specifically, external drive load specifically includes：The master of 20Hz, 30Hz, 40Hz, 50Hz, 60Hz, 80Hz, 100Hz shake
Frequency；The vibration velocity amplitude of 1cm/s, 2cm/s, 3cm/s, 4cm/s, 5cm/s, 6cm/s, 7cm/s.The master oscillator frequenc and vibration velocity width
Value intercombination applies into 49 groups of excitation loads to the finite element structure model of corresponding each exposed length, for example,
20Hz forms seven groups of excitation loads with 1cm/s, 2cm/s, 3cm/s, 4cm/s, 5cm/s, 6cm/s, 7cm/s respectively, and by this group
Excitation load applies to exposed length as on 25cm finite element structure models, and so on, share 49 groups of excitation loads.
The applying unit 102 places the nodes of locations of sensor as monitoring node is simulated using the pedestal, with can be more
True simulation actual test environment so that the sensor that simulation monitoring node data can be in actual response actual test environment
Data.In order to preset external drive load be applied with the vibration data of Rock And Soil in actual response actual test environment
In bottom node group on to the corresponding finite element structure model, each bottom node vibration data and each simulation monitoring are obtained
Point vibration data.
After the applying unit 102 gets each bottom node vibration data and each simulation monitoring point vibration data, institute
Fitting unit 103 is stated for being fitted each data correction letter according to each bottom node vibration data and each simulation monitoring point vibration data
Number.
Specifically, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 25cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 25cm, the data correction function specifically include：Frequency correction function and vibration
Velocity amplitude correction function, it is specific as follows：
The frequency correction function is specially：fX=0.489fXM 1.1951、fY=0.489fYM 1.1951And fZ=
1.6157fZM 0.9354；
The vibration velocity amplitude correction function is specially：vX=0.4185VXM 1.1538、vY=0.4898VYM 0.961And vZ=
0.9958VZM 0.9982；Wherein,
The fxFor the practical master oscillator frequenc of measuring point in the X direction, the fXMFor the sensing data in the X direction
Master oscillator frequenc；The fyFor the practical master oscillator frequenc of measuring point in the Y direction, the fYMFor the sensing data in the Y direction
Master oscillator frequenc；The fzFor the practical master oscillator frequenc of measuring point in z-direction, the fZMFor the master of practical measuring point in z-direction
Vibration frequency；
The vxFor the actual vibration velocity amplitude of measuring point in the X direction, the VXMIt is the sensing data in X-direction
On vibration velocity amplitude；The vyFor the actual vibration velocity amplitude of measuring point in the Y direction, the VYMFor the sensor number
According to vibration velocity amplitude in the Y direction；The vzFor the actual vibration velocity amplitude of measuring point in z-direction, the VZMFor institute
State the vibration velocity amplitude of sensing data in z-direction.
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 30cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 30cm, it is specific as follows：
When the length that the Test bench exposes in Rock And Soil is 30cm, the frequency correction function is specially：fX
=0.7272fXM 1.1332、fY=2.3405fYM 0.8134And fZ=1.3762fZM 0.9894；
The vibration velocity amplitude correction function is specially：vX=0.2181VXM 1.6255、vY=0.3509VYM 1.2087And vZ
=0.9953VZM 0.9961。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 35cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 35cm, it is specific as follows：
The frequency correction function is specially：fX=2.2699fXM 0.8643、fY=2.1075fYM 0.8949And fZ=
0.8069fZM 1.1271；
The vibration velocity amplitude correction function is specially：vX=0.0902VXM 2.2975、vY=0.2412VYM 1.559And vZ=
0.9968VZM 0.9934。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 40cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 40cm, it is specific as follows：
The frequency correction function is specially：fX=4.8804fXM 0.7062、fY=3.2278fYM 0.7639And fZ=
1.3762fZM 0.9894；
The vibration velocity amplitude correction function is specially：vX=0.0665VXM 2.6674、vY=0.2127VYM 1.743And vZ=
0.9996VZM 0.9906。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 45cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 45cm, it is specific as follows：
The frequency correction function is specially：fX=12.601fXM 0.435、fY=3.5085fYM 0.749And fZ=
1.3762fZM 0.9849；
The vibration velocity amplitude correction function is specially：vX=0.0794VXM 2.9451、vY=0.1738VYM 2.0956And vZ
=1.0032VZM 0.9848。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 50cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 50cm, it is specific as follows：
The frequency correction function is specially：fX=10.822fXM 0.4837、fY=3.3109fYM 0.7379And fZ=
1.3762fZM 0.9849；
The vibration velocity amplitude correction function is specially：vX=0.0539VXM 3.7508、vY=0.1628VYM 2.4078And vZ
=1.0044VZM 0.9824。
Correspondingly, when loads being encouraged to be respectively applied to the finite element structure model that exposed length is 50cm 49 groups of numbers
When upper, 49 groups of result of calculations can be obtained, the result of calculation includes bottom node vibration data and simulation monitoring point vibration number
According to.The fitting unit 103 is fitted portion's node vibrations data and simulation monitoring point vibration data according to least square method,
Correction function when getting exposed length as 55cm, it is specific as follows：
The frequency correction function is specially：fX=10.068fXM 0.4822、fY=4.7793fYM 0.6468；
The vibration velocity amplitude correction function is specially：vX=0.1545VXM 3.3643、vY=0.352VYM 1.9237And vZ=
0.989VZM 0.984。
After each data correction function obtains, the amending unit 104 is used for according to each data correction function pair pedestal
The vibration data that sensor measures is modified.
In practical application, unit 101, applying unit 102, fitting unit 103, the amending unit 104 established can be by
Central processing unit (CPU, Central Processing Unit), digital signal processor (DSP, Digtal in the device
Signal Processor), programmable logic array (FPGA, Field Programmable Gate Array), microcontroller list
First (MCU, Micro Controller Unit) is realized.
The device provided in this embodiment for correcting data based on the length that Test bench exposes on Rock And Soil surface, is established
The corresponding finite element structure model of Test bench under each length, according under different length according to each bottom node vibration data and
Each simulation monitoring point vibration data is fitted each data correction function；Pedestal sensor can be measured according to each data correction function
Vibration data be modified, solve and obtain the vibration data of practical measuring point on Rock And Soil, so as to improve the precision of data and
Accuracy more can accurately reflect practical measuring point vibration performance.
Embodiment three
In practical application, the Rock And Soil of varying environment can be tested using the pedestal of embodiment one, obtain vibration
Data, and using embodiment one provide data correcting method and embodiment two provide data correction device to be directed to data into
Row is corrected, specific as follows：
When Rock And Soil is decayed rock, sensor is not fixed easily, and as shown in figure 12, arranges the first sensing on the base
Device 121 is monitored vibration signal.In order to verify the accuracy of correction algorithm, rock top weathered layer is excavated to form ditch
Slot, and arrange second sensor 122, the vibration signal measured with through accomplishing the revised vibration amplitude of algorithm, frequency is compared
Compared with.Pedestal exposed length is 55cm during actual monitoring.The vibration monitoring data finally obtained are as shown in table 1：
Table 1
The data measured using the data correction function pair first sensor 121 that pedestal exposed length is 55cm are modified
Data afterwards are as shown in table 2：
Table 2
From table 2 it can be seen that the vibration velocity that measures of the vibration velocity of revised first sensor 121 and second sensor 122 it
Between error be up to 2.81%, frequency error is up to 4.02%, illustrates the precision of the data correcting method or good.
When Rock And Soil is friable soil, sensor is not fixed easily, using the pedestal to the earth's surface under friable soil environment
Vibration is monitored.According to live actual environment, pedestal ride out is selected as 25cm, gets first sensor 121 and monitors number
After (monitoring vibration velocity and monitoring frequency), the data correction function pair first sensor 121 that pedestal exposed length is 25cm is utilized
After the data measured are modified, revised data are as shown in table 3：
Table 3
When being monitored using the pedestal to the Rock And Soil under ponding environment, according to live actual environment, pedestal exposes
30cm is highly selected as, after getting 121 monitoring data of first sensor (monitoring vibration velocity and monitoring frequency), is exposed using pedestal and grown
It spends after the data measured for the data correction function pair first sensor 121 of 30cm are modified, revised data such as 4 institute of table
Show：
Table 4
The data that first sensor 121 measures are carried out using the data correcting method that embodiment one provides in the present embodiment
After amendment, it can more accurately reflect practical measuring point vibration performance.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc. should be included in the protection of the present invention
Within the scope of.
Claims (10)
- A kind of 1. method for correcting data, which is characterized in that the method includesBased on the length that Test bench exposes on Rock And Soil surface, the corresponding finite element structure mould of Test bench under each length is established Type；Using the nodes of locations of pedestal placement sensor as simulation monitoring node；Preset external drive load is applied to the bottom node group on corresponding finite element structure model, obtains each bottom Portion's node vibrations data and each simulation monitoring point vibration data；Each data correction function is fitted according to each bottom node vibration data and each simulation monitoring point vibration data；It is modified according to the vibration data that each data correction function pair pedestal sensor measures；Wherein, the data correction letter Number specifically includes：Frequency correction function and vibration velocity amplitude correction function.
- 2. the method as described in claim 1, which is characterized in that establish the corresponding finite element structure mould of Test bench under each height Type specifically includes：According to the actual size of the pedestal all parts, each height is established using dynamic finite element software ANSYS/LS-DYNA The corresponding finite element structure model of lower Test bench；Wherein,The pedestal includes：Fixed base station, one end of the fixed base station is connected with movable plate；High bar is connect, described one end for connecing high bar is connected with the other end of the fixed base station；Sensor, the sensor are mounted on the fixed base station；Drill steel, one end of the drill steel are connected with the other end for connecing high bar.
- 3. method as claimed in claim 2, which is characterized in that when the length that the Test bench exposes in Rock And Soil is During 25cm, the frequency correction function is specially：fX=0.489fXM 1.1951、fY=0.489fYM 1.1951And fZ= 1.6157fZM 0.9354；The vibration velocity amplitude correction function is specially：vX=0.4185VXM 1.1538、vY=0.4898VYM 0.961And vZ= 0.9958VZM 0.9982；Wherein,The fxFor the practical master oscillator frequenc of measuring point in the X direction, the fXMFor the sensing data, master in the X direction shakes Frequency；The fyFor the practical master oscillator frequenc of measuring point in the Y direction, the fYMFor the master of the sensing data in the Y direction Vibration frequency；The fzFor the practical master oscillator frequenc of measuring point in z-direction, the fZMIt shakes frequently for the master of practical measuring point in z-direction Rate；The vxFor the actual vibration velocity amplitude of measuring point in the X direction, the VXMFor the sensing data in the X direction Vibration velocity amplitude；The vyFor the actual vibration velocity amplitude of measuring point in the Y direction, the VYMExist for the sensing data Vibration velocity amplitude in Y-direction；The vzFor the actual vibration velocity amplitude of measuring point in z-direction, the VZMFor the biography The vibration velocity amplitude of sensor data in z-direction.
- 4. the method described in claim 3, which is characterized in that when the length that the Test bench exposes in Rock And Soil is 30cm When, the frequency correction function is specially：fX=0.7272fXM 1.1332、fY=2.3405fYM 0.8134And fZ= 1.3762fZM 0.9894；The vibration velocity amplitude correction function is specially：vX=0.2181VXM 1.6255、vY=0.3509VYM 1.2087And vZ= 0.9953VZM 0.9961。
- 5. the method described in claim 3, which is characterized in that when the length that the Test bench exposes in Rock And Soil is 35m When, the frequency correction function is specially：fX=2.2699fXM 0.8643、fY=2.1075fYM 0.8949And fZ= 0.8069fZM 1.1271；The vibration velocity amplitude correction function is specially：vX=0.0902VXM 2.2975、vY=0.2412VYM 1.559And vZ= 0.9968VZM 0.9934。
- 6. the method described in claim 3, which is characterized in that when the length that the Test bench exposes in Rock And Soil is 40m When, the frequency correction function is specially：fX=4.8804fXM 0.7062、fY=3.2278fYM 0.7639And fZ= 1.3762fZM 0.9894；The vibration velocity amplitude correction function is specially：vX=0.0665VXM 2.6674、vY=0.2127VYM 1.743And vZ= 0.9996VZM 0.9906。
- 7. the method described in claim 3, which is characterized in that when the length that the Test bench exposes in Rock And Soil is 45m When, the frequency correction function is specially：fX=12.601fXM 0.435、fY=3.5085fYM 0.749And fZ=1.3762fZM 0.9849；The vibration velocity amplitude correction function is specially：vX=0.0794VXM 2.9451、vY=0.1738VYM 2.0956And vZ= 1.0032VZM 0.9848。
- 8. the method described in claim 3, which is characterized in that when the length that the Test bench exposes in Rock And Soil is 50m When, the frequency correction function is specially：fX=10.822fXM 0.4837、fY=3.3109fYM 0.7379And fZ= 1.3762fZM 0.9849；The vibration velocity amplitude correction function is specially：vX=0.0539VXM 3.7508、vY=0.1628VYM 2.4078And vZ= 1.0044VZM 0.9824。
- 9. the method described in claim 3, which is characterized in that when the length that the Test bench exposes in Rock And Soil is 55m When, the frequency correction function is specially：fX=10.068fXM 0.4822、fY=4.7793fYM 0.6468；The vibration velocity amplitude correction function is specially：vX=0.1545VXM 3.3643、vY=0.352VYM 1.9237And vZ= 0.989VZM 0.984。
- 10. a kind of device for correcting data, which is characterized in that described device includes：Unit is established, the unit of establishing is used for the length exposed based on Test bench on Rock And Soil surface, established under each length The corresponding finite element structure model of Test bench；Applying unit, the applying unit are used to apply preset external drive load to the corresponding finite element structure mould In bottom node group in type, each bottom node vibration data and each simulation monitoring point vibration data are obtained；Fitting unit, the fitting unit are used for according to each bottom node vibration data and each simulation monitoring point vibration data fitting Each data correction function；Amending unit, the amending unit are used to be carried out according to the vibration data that each data correction function pair pedestal sensor measures It corrects；Wherein, the data correction function specifically includes：Frequency correction function and vibration velocity amplitude correction function；The mould Intend the nodes of locations that monitoring node places sensor for the pedestal.
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|---|---|---|---|---|
| JPH09242003A (en) * | 1996-03-06 | 1997-09-16 | Railway Technical Res Inst | Stabilizing method for balast railway |
| CN101052896A (en) * | 2004-08-27 | 2007-10-10 | 普拉德研究及发展公司 | Improved geophone calibration technique |
| CN101813785A (en) * | 2010-05-10 | 2010-08-25 | 中南大学 | Sensor tailstock for seismic exploration or vibration test |
| CN104749615A (en) * | 2015-03-18 | 2015-07-01 | 中南大学 | Radio detector for seismic exploration or vibration test |
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| JP4348415B2 (en) * | 2007-04-26 | 2009-10-21 | 古野電気株式会社 | Bottom sediment discrimination device and bottom sediment discrimination method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09242003A (en) * | 1996-03-06 | 1997-09-16 | Railway Technical Res Inst | Stabilizing method for balast railway |
| CN101052896A (en) * | 2004-08-27 | 2007-10-10 | 普拉德研究及发展公司 | Improved geophone calibration technique |
| CN101813785A (en) * | 2010-05-10 | 2010-08-25 | 中南大学 | Sensor tailstock for seismic exploration or vibration test |
| CN104749615A (en) * | 2015-03-18 | 2015-07-01 | 中南大学 | Radio detector for seismic exploration or vibration test |
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