CN110160457A - Geotechnical centrifugal model test three-dimensional whole field deformation measuring device and method - Google Patents
Geotechnical centrifugal model test three-dimensional whole field deformation measuring device and method Download PDFInfo
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- CN110160457A CN110160457A CN201910356584.9A CN201910356584A CN110160457A CN 110160457 A CN110160457 A CN 110160457A CN 201910356584 A CN201910356584 A CN 201910356584A CN 110160457 A CN110160457 A CN 110160457A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
Abstract
The invention discloses a kind of geotechnical centrifugal model test three-dimensional whole field deformation measuring device and methods, wherein, equipment includes: rotary type camera support, fixed channel steel bracket, phase unit, camera lens front apron, camera lens retainer plate, camera body retainer plate, set-top box, light supply apparatus and terminal device, wherein, terminal device is connected with set-top box, for the image procossing to image, and three-dimensional image analysis is carried out using image of the open source analysis software to the first and second top cameras, and two dimensional image analysis is carried out to the image of fixed cameras, obtain the change in displacement result cloud atlas of model, and it integrates and obtains three-dimensional whole field modified-image.The equipment can be handled model side (inside) and upper epidermis binding analysis, restore the Evolution of the truth of threedimensional model and its tensile failure deformation of slope surface.
Description
Technical field
The present invention relates to geotechnological mechanical model experimental rig technical field, in particular to a kind of geotechnical centrifugal model test
Three-dimensional whole field deformation measuring device and method.
Background technique
With the development of modern society, domestic and international large-scale construction project quantity is sharply increased, including reservoir, dam, dyke,
Large Span Underground engineering and super high-rise building etc., large-scale construction project propose higher requirement to the soil body and its ground.
Indoor centrifugal machine model trial is a kind of effective scale (model) test, is capable of effective inverting ground or side slope
Process of deformation and failure.The single camera that the indoor centrifugal machine model trial applied at present relies primarily on model casing side wall is clapped
The migration for capturing mark point is taken the photograph, which only reflects two-dimensional side (inside) deformation of side slope, and the destruction of side slope
Deformation is directed not only to slopes internal modification, also relates to the deformation failures such as the cracking, topsoil stripping and traction stretching on side slope surface
Form, surface and internal modification Evolution during system research Slope Failure, for further investigation landslide disaster mechanism and
Hazard prediction and prevention have great importance.Meanwhile being acted on by the frictional resistance between slopes and model casing organic glass,
Easily the internal generation of generation destroys and significant change does not occur yet for observation side, and the deformation of its side (inside) cannot represent slopes at this time
Distortion Disciplinarian.
Centrifuge 3-D image captures the two big difficulties with analysis system: on the one hand, how to obtain side slope model
Surface layer image；On the other hand, the image in three directions that how will acquire is fitted the three-dimensional for analyzing and then being integrated into model
Deformation.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of geotechnical centrifugal model test three-dimensional whole field deformation measurements to set
Standby, which can be handled model side (inside) and upper epidermis binding analysis, restore threedimensional model truth and its
The Evolution of the tensile failure deformation of slope surface.
It is another object of the present invention to propose a kind of geotechnical centrifugal model test three-dimensional whole field deformation measurement method.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of geotechnical centrifugal model test three-dimensional whole field
Strain gauge, comprising: rotary type camera support for fixing the first and second top cameras, and rotates first He
Second top camera is to adjust the angle；Fixed channel steel bracket, for fixing and supporting the rotary type camera support；Camera
Group tests ongoing image for acquiring, and the phase unit includes first and second top camera and centrifuge modelling test
The fixed cameras of case side；Camera lens front apron is used to support the camera lens of the phase unit；Camera lens retainer plate is used
In the camera lens of the fixation phase unit, lies in the camera lens on the surface plate of the camera lens front apron and keep
Stablize；Camera body retainer plate makes camera lie in the rotary type camera branch for fixing the camera body of the phase unit
On steel plate on frame and keep stable；Set-top box controls the phase unit work for unified IP address simultaneously；Light supply apparatus,
For supplementary light during testing, so that the clarity of described image meets preset condition；Terminal device, the terminal device
It is connected with the set-top box, for the image procossing to described image, and using open source analysis software to described first and second
The image of top camera carries out three-dimensional image analysis, and carries out two dimensional image analysis to the image of the fixed cameras, obtains
The change in displacement result cloud atlas of model, and integrate and obtain three-dimensional whole field modified-image.
The geotechnical centrifugal model test three-dimensional whole field deformation measuring device of the embodiment of the present invention, can capture model side
And the change in displacement situation of upper surface can model surface and side (inside) during reduction test by image analysis processing
Deformation failure and Evolution, to obtain the deformation failure information of the three-dimensional whole field of model.
In addition, geotechnical centrifugal model test three-dimensional whole field deformation measuring device according to the above embodiment of the present invention may be used also
With following additional technical characteristic:
Further, in one embodiment of the invention, further includes: containing box, for storing the phase unit, described
It is rotary type camera support, the fixed channel steel bracket, the terminal device, the set-top box, the camera lens front apron, described
Camera lens retainer plate, the camera body retainer plate and the light supply apparatus.
Further, in one embodiment of the invention, the rotary type camera support includes: bottom steel plate and rotation
Steel plate, wherein the adjustment and fixation that the bottom steel plate and the rotation steel plate pass through multiple slidably bolts progress angle.
Further, in one embodiment of the invention, the slewing area of the rotary type camera support be 5 ° extremely
135°。
In order to achieve the above objectives, it is three-dimensional complete to propose a kind of geotechnical centrifugal model test for another aspect of the present invention embodiment
Field deformation measurement method, using the equipment as described in above-described embodiment, wherein method is the following steps are included: by described fixed
Channel steel bracket is fixed on the centrifuge modelling test case；The rotary type camera support is fixed on the channel steel bracket, and
It is adjusted to the first predetermined angleHorizontal installs first and second top camera on the steel plate, and utilizes the mirror
Head front apron and the retainer plate are fixed；The relative angle of first and second top camera is adjusted to the second preset angle
α is spent, while adjusting the angle of the rotary type camera support to third predetermined angleTo control image-capture field；Pass through
The fixed cameras and first and second top camera of set-top box connection side are adjusted in the terminal device
The whole light supply apparatus supplementary light；After the test, processing point is carried out using image sequence of the terminal device to acquisition
The image of first and second top camera is carried out three dimensional analysis by analysis, and the image that the fixed cameras is acquired carries out
Two-dimension analysis generates the three-dimensional whole field change in displacement image.
The geotechnical centrifugal model test three-dimensional whole field deformation measurement method of the embodiment of the present invention, can capture model side
And the change in displacement situation of upper surface can model surface and side (inside) during reduction test by image analysis processing
Deformation failure and Evolution, to obtain the deformation failure information of the three-dimensional whole field of model.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is to be shown according to the structure of the geotechnical centrifugal model test three-dimensional whole field deformation measuring device of the embodiment of the present invention
It is intended to；
Fig. 2 is connecting and rotating with centrifuge modelling test case for fixed channel steel bracket according to the embodiment of the present invention
The stay bolt schematic diagram that formula camera support is connect with fixed channel steel bracket；
Fig. 3 a is the image and two-dimensional process image schematic diagram acquired according to the left side top camera of the embodiment of the present invention；
Fig. 3 b is the image and two-dimensional process image schematic diagram acquired according to the right hand top camera of the embodiment of the present invention；
Fig. 3 c is the image and two-dimensional process image schematic diagram acquired according to the lateral fixing type camera of the embodiment of the present invention；
Fig. 3 d is the model upper surface image acquired according to the phase unit of the embodiment of the present invention, generates the three of model upper epidermis
Tie up displacement deformation cloud atlas；
Fig. 4 is the process according to the geotechnical centrifugal model test three-dimensional whole field deformation measurement method of the embodiment of the present invention
Figure；
Fig. 5 is the structural schematic diagram according to the fixed channel steel bracket of the embodiment of the present invention；
Fig. 6 a is the structural schematic diagram according to the rotary type camera support of the embodiment of the present invention；
Fig. 6 b is the side connection schematic diagram according to the rotary type camera support of the embodiment of the present invention；
Fig. 7 is camera lens front apron, camera lens retainer plate and the camera machine according to the stationary phase unit of the embodiment of the present invention
The schematic diagram of body retainer plate；
Fig. 8 is according to the rotary type camera support of the embodiment of the present invention and the assembling schematic diagram of phase unit.
Description of symbols:
Rotary type camera support 1, fixed channel steel bracket 2, phase unit 3, camera lens front apron 4, camera lens retainer plate 5,
Camera body retainer plate 6, set-top box 7, light supply apparatus 8, terminal device 9, centrifuge modelling test case 10, fixed cameras 11, point light
Source 12, strip light 13, stay bolt 14, slopes model 15, poly (methyl methacrylate) plate 16, display device 17, bottom steel plate 18, rotation steel
Plate 19, connection bolt 20, slidably bolt 21 and nut 22.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The geotechnical centrifugal model test three-dimensional whole field deformation proposed according to embodiments of the present invention is described with reference to the accompanying drawings
Measuring device and method describe the geotechnical centrifugal model test proposed according to embodiments of the present invention three-dimensional with reference to the accompanying drawings first
Full field deformation measure equipment.
Fig. 1 is that the structure of the geotechnical centrifugal model test three-dimensional whole field deformation measuring device of one embodiment of the invention is shown
It is intended to.
As shown in Figure 1, the geotechnical centrifugal model test three-dimensional whole field deformation measuring device includes: rotary type camera support
1, fixed channel steel bracket 2, phase unit 3, camera lens front apron 4, camera lens retainer plate 5, camera body retainer plate 6, set-top box
7, light supply apparatus 8 and terminal device 9.
Wherein, rotary type camera support 1 is for fixing the first and second top cameras, and rotates the first and second top phases
Machine is to adjust the angle.Fixed channel steel bracket 2 is for fixing and supporting rotary type camera support 1.Phase unit 3 is for acquiring experiment
Ongoing image, phase unit 3 include the fixed cameras of 10 side of the first and second top cameras and centrifuge modelling test case
11.Camera lens front apron 4 is used to support the camera lens of phase unit 3.Camera lens retainer plate 5 is used for the camera of stationary phase unit 3
Camera lens lies in camera lens on the surface plate of camera lens front apron 4 and keeps stable.Camera body retainer plate 6 is for fixing
The camera body of phase unit 3 on the steel plate for lying in camera on rotary type camera support 1 and keeps stable.Set-top box 7 is used for
Unified IP address controls the work of phase unit 3 simultaneously.Light supply apparatus 8 is for supplementary light during testing, so that image is clear
Degree meets preset condition.Terminal device 9 is connected with set-top box 7, for the image procossing to image, and utilizes open source analysis software
Three-dimensional image analysis is carried out to the image of the first and second top cameras, and two dimensional image is carried out to the image of fixed cameras 11
Analysis obtains the change in displacement result cloud atlas of model, and integrates and obtain three-dimensional whole field modified-image.The equipment of the embodiment of the present invention
Model side (inside) and upper epidermis binding analysis can be handled, restore the truth and its slope surface of threedimensional model
The Evolution of tensile failure deformation.
Specifically, fixed channel steel bracket 2 expands acquisition range for fixing and supporting rotary type camera support 1.Turn
Dynamic formula camera support 1 is rotated for fixing the first and second top cameras to adjust the angle.Phase unit 3 is for testing in progress
Image Acquisition, including 10 lateral fixing type camera 11 of two top cameras and model casing.Camera lens front apron 4 is used to support
The camera lens of phase unit 3, thus prevent phase unit 3 by 3 deformation of phase unit caused under the influence of high centrifugal acceleration very
The case where falling off to camera lens.Camera lens retainer plate 5 is used for fixed camera camera lens, and camera lens is made to lie in camera lens front
It keeps stablizing on the surface plate of plate 4, while preventing longer camera lens folding because caused by being influenced by high centrifugal acceleration
Disconnected situation.Camera body retainer plate 6 is used for the camera body of stationary phase unit 3, lies in camera on rotary type camera support
Steel plate on keep stablizing, while prevent camera body long and by high centrifugal acceleration influenced caused by fracture situation.Machine
Top box 7 is used for the connection of polyphaser and terminal device 9, and the unified address IP controls three cameras (the i.e. first and second tops simultaneously
Camera, fixed cameras 11) carry out Image Acquisition.Light supply apparatus 8 is clear to capture for supplementing enough illumination during testing
Clear image.Terminal device 9 is used for the image procossing to acquisition image, using open source analysis software to two camera of top (i.e. the
One and second top camera) image that captures carries out three-dimensional image analysis, the image that side fixed cameras 11 captures is carried out
Two dimensional image analysis obtains the change in displacement result cloud atlas of model, can finally integrate to obtain three-dimensional whole field modified-image.
Need bright, phase unit 3 is referred to as top camera, and top camera includes the first and second top cameras,
Top camera is for acquiring geotechnical centrifuge model upper surface image；Fixed cameras 11 is for acquiring geotechnical centrifuge model side
Face image.Wherein, the first top camera can be the left side top camera in phase unit 3 as shown in Figure 1, the second top camera
It can be the right hand top camera in phase unit 3 as shown in Figure 1.Optionally, phase unit 3 can use Daheng MER-132-
43GM/C GigE interface CCD industrial digital camera, certainly, those skilled in the art can be according to the specific camera of actual selection
Model, herein only as an example, being not specifically limited.
Optionally, set-top box 7 can be TP-LINK TL-WTR9520, and certainly, those skilled in the art can be according to reality
Border selects specific set-top box, herein only as an example, being not specifically limited.
Optionally, terminal device 9 can be host computer or laptop, and those skilled in the art can be according to reality
The use needs on border seek the specific terminal device of selection, are not specifically limited herein.
Wherein, in one embodiment of the invention, rotary type camera support 1 includes: bottom steel plate and rotation steel plate.Its
In, bottom steel plate and rotation steel plate by multiple slidably bolts progress angle adjustment and fixation, rotary type camera support
Slewing area is 5 ° to 135 °.
Wherein, in one embodiment of the invention, light supply apparatus 8 may include point light source 12 and strip light 13.Wherein,
Point light source 12 is used to supplement light source for phase unit 3；Strip light 13 is used to be 11 supplementary light of lateral fixing type camera.
Further, in one embodiment of the invention, the equipment of the embodiment of the present invention further include: stay bolt 14, slope
Body Model 15, poly (methyl methacrylate) plate 16 and display device 17.
Wherein, display device 17 can be computer monitor, certainly, those skilled in the art can according to the actual situation into
Row setting, is not specifically limited herein.As shown in Fig. 2, the equipment of the embodiment of the present invention can use stay bolt 14 will be fixed
Channel steel bracket 2 and centrifuge modelling test case 10 are attached fixation, using stay bolt 14 by rotary type camera support 1 and fixed slot
Steel bracket 2 is attached fixation.
Further, as shown in figure 3, Fig. 3 is that geotechnical centrifugal model test according to an embodiment of the invention is three-dimensional
The image of full field deformation measure equipment acquisition carries out three peacekeeping two-dimension analysis, and is integrated in conjunction with archetype to obtain three-dimensional
The schematic diagram of whole audience variation.
Specifically, Fig. 3 a to 3d is surveyed using the geotechnical centrifugal model test three-dimensional whole field deformation of the embodiment of the present invention
A model image for measuring equipment handles analysis examples.In geotechnical centrifugal model test, three cameras capture more times simultaneously
The model image of point.It is screened using laptop to referring to image and analysis image, Fig. 3 a is that left side top camera is adopted
The image (comprising referring to figure and comparison diagram) and two-dimensional process image of collection；Fig. 3 b is that the image of right hand top camera acquisition (includes
Referring to figure and comparison diagram) and two-dimensional process image；Fig. 3 c is the image of lateral fixing type camera acquisition (comprising referring to figure and comparison
Figure) and two-dimensional process image；Fig. 3 d is the model upper surface image acquired according to two camera of top, generates the three of model upper epidermis
Tie up displacement deformation cloud atlas.
Further, in one embodiment of the invention, the equipment of the embodiment of the present invention further include: containing box.Wherein,
Containing box, for storing phase unit 3, rotary type camera support 1, fixed channel steel bracket 2, terminal device 9, set-top box 7, mirror
Head front apron 4, camera lens retainer plate 5, camera body retainer plate 6 and light supply apparatus 8.
It should be noted that containing box can be conventional composite light-weight material, consequently facilitating Assembly part is stored, when
So, those skilled in the art can select other materials according to actual use demand, be not specifically limited herein.
The geotechnical centrifugal model test three-dimensional whole field deformation measuring device proposed according to embodiments of the present invention, can capture
The change in displacement situation of model side and upper surface can model surface and side during reduction test by image analysis processing
The deformation failure and Evolution in face (inside), to obtain the deformation failure information of the three-dimensional whole field of model.
The geotechnical centrifugal model test three-dimensional whole field deformation proposed according to embodiments of the present invention is described referring next to attached drawing
Measurement method.
Fig. 4 is the process of the geotechnical centrifugal model test three-dimensional whole field deformation measurement method of one embodiment of the invention
Figure.
As shown in figure 4, the geotechnical centrifugal model test three-dimensional whole field deformation measurement method, using such as above-described embodiment
Equipment, wherein method the following steps are included:
In step S401, fixed channel steel bracket is fixed on centrifuge modelling test case.
It is understood that fixed channel steel bracket is mounted on the default position on centrifuge modelling test case by the embodiment of the present invention
Set place.Wherein, predeterminated position those skilled in the art can be configured according to practical situation, be not specifically limited herein.
Specifically, as shown in Figure 1, according to preset fixed point, using stay bolt 14 by fixed channel steel bracket 2 with from
Scheming model casing 10 carries out Mulit-point Connection and fixes, and guarantee will not generate vibration even separation situation, while its during the test
Height ensure that the enough coverages of top camera.
In step S402, rotary type camera support is fixed on channel steel bracket, and is adjusted to the first predetermined angle
It is understood that rotary type camera support is fixed on fixed channel steel bracket according to coverage needs
Tail portion, and set the first predetermined angleWherein, the first predetermined angleIt is referred to as initial angle of depression value
Specifically, as shown in Figure 1, the bottom steel plate of rotary type camera support 1 is fixed on fixation using stay bolt 14
The tail portion of formula channel steel bracket 2, and rotation steel plate is threaded to certain angle.
In step S403, horizontal installs the first and second top cameras on the steel plate, and using camera lens front apron and admittedly
Fixed circle is fixed.
It is understood that two cameras (i.e. the first and second top cameras) to be lain in the rotation of rotary type camera support
Turn on steel plate, adjusts its relative angle α until image-capture field covers entire upper surface, and to camera lens and fuselage
It is fixed.
In a specific example of the invention, as shown in Fig. 5 to Fig. 8, camera lens are blocked using camera lens front apron 4,
Guarantee that camera lens will not be detached from because centrifugal force acts on；And utilize camera lens retainer plate 5 and camera body retainer plate 6 by phase
Unit 3 (phase unit 3 includes two top cameras) is fixed on the rotation steel plate of rotary type camera support, guarantees camera lens or machine
Body will not fracture.Wherein, phase unit 3 is but is not limited to Daheng MER-132-43GM/C GigE interface CCD (Charge-
Coupled Device, charge coupled cell) industrial digital camera.
In step s 404, the relative angle of the first and second top cameras is adjusted to the second predetermined angle α, is adjusted simultaneously
The angle of rotary type camera support is to third predetermined angleTo control image-capture field.
In step S405, the fixed cameras and the first and second top cameras for connecting side by set-top box are in terminal
Equipment, and adjust light supply apparatus supplementary light.
It is understood that connecting side fixed cameras and two cameras in same terminal device by set-top box, and adjust
Whole light supply apparatus supplements illumination appropriate.
Specifically, centrifuge modelling test case is placed on centrifuge cantilever, after carrying out connection and relevant parameter setting, from
In scheming rotation process, the phase unit at top and the fixed camera of side are acquired simultaneously.
As shown in Figure 1, when the phase unit 3 for fixing top and by the lifting of centrifuge modelling test case 10 on centrifuge after, will
Lateral fixing type camera 11 is uniformly connected to terminal device 9 using set-top box 7 with two top cameras in phase unit 3, then
Using display device 17, IP address, the parameters such as exposure and frame number are set；13 position of point light source 12 and strip lamp is adjusted again, is mended
Enough illumination is filled, three cameras is enable to capture clearly image.
As a specific example, as shown in figure 6 a and 6b, rotary type camera support 1 mainly by bottom steel plate 18, turn
Dynamic steel plate 19 connects bolt 20 and the slidably composition of bolt 21.Bottom steel plate 17 and rotation steel plate 18 can be by connecting bolt
19 are rotated, wherein there are two strip-shaped grooves respectively on rotation steel plate, to guarantee that slidably bolt 20 can be slided wherein
It is dynamic, and be fixed in place using nut 22, to reach angle appropriate
In step S406, after the test, processing analysis is carried out using image sequence of the terminal device to acquisition, by
One and second top camera image carry out three dimensional analysis, by fixed cameras acquisition image carry out two-dimension analysis, generate three
Tie up whole audience change in displacement image.
It is understood that after the test, the image sequence of acquisition is subjected to image processing and analyzing using terminal device,
The change in displacement cloud atlas of upper surface and side (inside) is respectively obtained, and then obtains the three-D displacement deformation result of the whole audience.
For example, terminal device is by taking laptop as an example and to test the image acquired after a certain period of time
Example can use the image that laptop acquires two camera of top and carry out three-dimensional change in displacement analysis, obtains original mould
The deformation of type top slope surface；The image that side fixed camera is acquired again carries out two-dimensional change in displacement analysis, obtains original
The deformation of beginning model side；It is finally based on archetype form, the displacement cloud atlas of upper surface and side (inside) is integrated
Three-D displacement as the whole audience changes cloud atlas.
Specifically, three camera captured images are respectively processed using laptop, obtain the three-dimensional of model
The image of two top cameras is carried out three dimensional analysis by the whole field deformation rule of development, and the image of side camera acquisition carries out two dimension
Analysis, is finally integrated into whole audience three-D displacement modified-image for model surface layer and side (inside) change in displacement.
Wherein, model surface layer and side (inside) change in displacement are integrated into whole audience three-D displacement modified-image, into one
Step includes: laptop according to archetype by the analysis result images of surface layer and side according to coordinate conversion is carried out, with original
Beginning model side and upper surface relative position are matched, to obtain the Complete three-dimensional change in displacement cloud atlas of archetype.
In one embodiment of the invention, the three-D displacement variation cloud atlas of obtained model can be exported, and be used
In scientific research or other purposes.Such as: with * .vtk, the three-dimensional cloud atlas of the 3 dimensional format output model of * .vtu is directly described
Test result；Or the three-dimensional cloud atlas of model is used for subsequent numerical result and is compared.That is, can be by the three of object
Dimension module is exported into * .vtk, * .vtu etc. common 3 dimensional format, convenient for being shown to model three-D displacement cloud atlas.
The geotechnical centrifugal model test three-dimensional whole field deformation measurement method of the embodiment proposed according to embodiments of the present invention,
The change in displacement situation that model side and upper surface can be captured can model during reduction test by image analysis processing
The deformation failure and Evolution on surface and side (inside), to obtain the deformation failure information of the three-dimensional whole field of model.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (5)
1. a kind of geotechnical centrifugal model test three-dimensional whole field deformation measuring device characterized by comprising
Rotary type camera support, for fixing the first and second top cameras, and rotate first and second top camera with
It adjusts the angle；
Fixed channel steel bracket, for fixing and supporting the rotary type camera support；
Phase unit tests ongoing image for acquiring, the phase unit include first and second top camera and from
The fixed cameras of scheming model casing side；
Camera lens front apron is used to support the camera lens of the phase unit；
Camera lens retainer plate makes the camera lens lie in the camera lens for fixing the camera lens of the phase unit
On the surface plate of front apron and keep stable；
Camera body retainer plate makes camera lie in the rotary type camera branch for fixing the camera body of the phase unit
On steel plate on frame and keep stable；
Set-top box controls the phase unit work for unified IP address simultaneously；
Light supply apparatus, for supplementary light during testing, so that the clarity of described image meets preset condition；And
Terminal device, the terminal device are connected with the set-top box, for the image procossing to described image, and utilize open source
It analyzes software and three-dimensional image analysis is carried out to the image of first and second top camera, and to the figure of the fixed cameras
As carrying out two dimensional image analysis, the change in displacement result cloud atlas of model is obtained, and integrate and obtain three-dimensional whole field modified-image.
2. equipment according to claim 1, which is characterized in that further include:
Containing box, for storing the phase unit, the rotary type camera support, the fixed channel steel bracket, the terminal
Equipment, the set-top box, the camera lens front apron, the camera lens retainer plate, the camera body retainer plate and the light
Source device.
3. equipment according to claim 1, which is characterized in that the rotary type camera support includes: bottom steel plate and turns
Dynamic steel plate, wherein the adjustment and fixation that the bottom steel plate and the rotation steel plate pass through multiple slidably bolts progress angle.
4. equipment according to claim 3, which is characterized in that the slewing area of the rotary type camera support be 5 ° extremely
135°。
5. a kind of geotechnical centrifugal model test three-dimensional whole field deformation measurement method, which is characterized in that using such as claim 1-4
Described in any item equipment, wherein method the following steps are included:
The fixed channel steel bracket is fixed on the centrifuge modelling test case；
The rotary type camera support is fixed on the channel steel bracket, and is adjusted to the first predetermined angle
Horizontal installs first and second top camera on the steel plate, and utilizes the camera lens front apron and the fixation
Circle is fixed；
The relative angle of first and second top camera is adjusted to the second predetermined angle α, while adjusting the rotary type phase
The angle of machine support is to third predetermined angleTo control image-capture field；
The fixed cameras and first and second top camera for connecting side by the set-top box are in the terminal
Equipment, and adjust the light supply apparatus supplementary light；
After the test, processing analysis is carried out using image sequence of the terminal device to acquisition, by described first and second
The image of top camera carries out three dimensional analysis, and the image that the fixed cameras is acquired carries out two-dimension analysis, generates described three
Tie up whole audience change in displacement image.
Priority Applications (1)
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| CN111337221A (en) * | 2020-02-24 | 2020-06-26 | 同济大学 | Tower type multifunctional automatic soil body accelerating device for geotechnical centrifugal test |
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