CN107132137A - A kind of asphalt constrains test specimen wheel tracking test device and method - Google Patents
A kind of asphalt constrains test specimen wheel tracking test device and method Download PDFInfo
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- CN107132137A CN107132137A CN201710283596.4A CN201710283596A CN107132137A CN 107132137 A CN107132137 A CN 107132137A CN 201710283596 A CN201710283596 A CN 201710283596A CN 107132137 A CN107132137 A CN 107132137A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
Abstract
Test specimen wheel tracking test device and method is constrained the invention discloses a kind of asphalt, including environmental cabinet, shell in environmental cabinet and the controller in shell, hydraulic control box, headstock, supporting plate, tire, dolly, connecting rod, base, four the first rubber blankets, four the second rubber blankets, side metal wooden partition, for detecting the pressure sensor of the active force between tire and test specimen to be measured and displacement transducer for detecting tire vertical displacement, the device and method can disclose the stress restraint state of test specimen to be measured and the relation of rutting depth, and can measure bituminous paving in real road engineering reach capacity rutting depth when be subjected to the equivalent axles of standard load.
Description
Technical field
The present invention relates to a kind of wheel tracking test device and method, and in particular to a kind of asphalt constraint test specimen rut examination
Experiment device and method.
Background technology
In recent years, the increasing with country to investments in highway building dynamics, the highway engineering construction of China is very rapid.But
It is due to that highway in China construction is started late, experience and technological reserve are not enough, and particularly China's weather conditions are complicated, traffic loading
The heavy duty of severe and vehicle, overloading often occur so that quite a few highway is broken using just occurring in very short time
It is bad, the long-term use on road surface can not be realized at all.Wherein, pavement track is most commonly seen damage shape in many pavement damages
Formula, has had a strong impact on the expected imagination of highway, also result in huge economic loss.
The type of rut mainly has：Structural rut, motive rut, abrasiveness rut and the not enough caused car of compacting
Rut.It was verified that the different grades of bituminous paving of the bituminous concrete institute making of same specification, road surface during Vehicle Load
Internal structure stress is different, and the rutting depth formed is also different.The existing research method for pavement track, it is generally real
Border measures the size of pavement rutting depth, and conventional method has：Ruler mensuration, levelling process, surface elevation meter, laser break
Face instrument, ultrasonic range finder etc..For traditional rut measuring method, its principle simple operations is simple but workload compared with
Greatly, especially for Expressway Asphalt road rut measurement, operate inconvenience, while being had a certain impact to traffic.
And develop faster laser and ultrasound examination now and then want much convenient and swift.Automatic Measurement Technique of today is in data processing
Just await technology further more new development.For detect from now on it is more be intended to full-automation, data processing side and
Also will more accuracy.
Either traditional measuring method or Automatic Measurement Technique of today, are merely to measure a certain pavement track
The size of depth value, but the stress restraint state of test specimen to be measured and the relation of rutting depth can not be disclosed, while can not measure
In real road engineering bituminous paving reach capacity rutting depth when be subjected to the equivalent axles of standard load.
The content of the invention
It is an object of the invention to the shortcoming for overcoming above-mentioned prior art, there is provided a kind of asphalt constraint test specimen car
Rut experimental rig and method, the device and method can disclose the stress restraint state of test specimen to be measured and the relation of rutting depth,
And can measure bituminous paving in real road engineering reach capacity rutting depth when be subjected to the equivalent axles of standard load.
To reach above-mentioned purpose, asphalt constraint test specimen wheel tracking test device of the present invention include environmental cabinet,
Shell in environmental cabinet and the controller in shell, hydraulic control box, headstock, supporting plate, tire, dolly,
Connecting rod, base, four the first rubber blankets, four the second rubber blankets, side metal wooden partition, for detect tire and test specimen to be measured it
Between active force pressure sensor and displacement transducer for detecting tire vertical displacement；
Hydraulic control box is fixed on the top of shell, and headstock is located at the bottom of shell, and the two ends of supporting plate are fixed respectively
In on the side wall of shell, dolly is located in supporting plate, and base is fixed on dolly, and grooved hole is opened up in supporting plate, wherein, connecting rod
Lower end be connected with headstock, the upper end of connecting rod is connected through slotted eye with the bottom of dolly, is set in the middle part of base upper surface
There are rectangle boss, four sides of four the first rubber blankets respectively just to rectangle boss, side and the length of the first rubber blanket
The side of square boss is in contact, the upper surface of rectangle boss and the upper surface flush of four the first rubber blankets, test specimen to be measured
On rectangle boss and four the first rubber blankets, the upper surface of test specimen to be measured is provided with four the second rubber blankets, one second
Rubber blanket is just to first rubber blanket, and the side of side metal wooden partition lower end is connected with the side of base, side metal plate
The upper end of wall curves inwardly and is connected with the upper surface of the second rubber blanket, middle part and the test specimen to be measured of side metal wooden partition side
End face be connected, the output shaft of hydraulic control box is connected by hydraulically extensible bar with tire, tire be located at test specimen to be measured on；
The control end of controller and headstock, the control end of hydraulic control box, the control end of environmental cabinet, pressure sensor
Output end and the output end of displacement transducer are connected.
The side of side metal wooden partition lower end is connected with the side of base by base fastening screw.
Dolly includes flat board and the wheel positioned at flat plate bottom, wherein, wheel is located in supporting plate, and base is fixed on flat
On plate, the upper end of connecting rod is connected with flat board.
Controller includes control panel, display screen and the power line being connected with extraneous power supply, wherein, control panel is with showing
Display screen, the control end of headstock, the control end of hydraulic control box, the control end of environmental cabinet, the output end of pressure sensor and position
The output end of displacement sensor is connected.
The upper end of side metal wooden partition curves inwardly and is connected by longitudinally secured screw with the upper surface of the second rubber blanket
Connect.
The middle part of side metal wooden partition side is connected with the end face of test specimen to be measured by adhesive.
Base is fixed on flat board by bottom screw.
Asphalt constraint test specimen wheel tracking test method of the present invention comprises the following steps：
Bitumen mixture specimen is divided into three test specimens, first test specimen is installed on into pitch as test specimen to be measured mixes
In material constraint test specimen wheel tracking test device, controller control hydraulic control box makes tire to first test specimen by hydraulically extensible bar
Apply active force, controller control headstock driving dolly drives first test specimen, tire is done on first test specimen back and forth
Roll motion, complete the wheel tracking test of first test specimen, obtain test specimen to be measured under all constraint operating modes and get on the bus the depth d of rut1；
First test specimen is replaced by second test specimen, then removes the second rubber blanket and side metal plate of the left and right sides
Wall, controller controls hydraulic control box tire is applied active force, controller control to second test specimen by hydraulically extensible bar
Headstock driving dolly drives second test specimen, tire is done on second test specimen and back and forth rolls motion, completes second examination
The wheel tracking test of part, obtains test specimen to be measured under local restriction operating mode and gets on the bus the depth d of rut2；
Second test specimen is replaced by the 3rd test specimen, then removes the second all rubber blankets and all side metal wooden partitions,
Controller controls hydraulic control box tire is applied active force, controller control headstock to the 3rd test specimen by hydraulically extensible bar
Drive dolly to drive the 3rd test specimen, tire is done the reciprocal wheel tracking test for rolling motion, completing the 3rd test specimen on the 3rd test specimen,
Obtain the depth d for rut of being got on the bus without test specimen to be measured under constraint operating mode3；
Calculate the free factor alpha of test specimen to be measured under staff cultivation operating mode1, wherein,Calculate and treated under local restriction operating mode
The free factor alpha of test block2, wherein,
Asphalt constraint test specimen wheel tracking test method of the present invention comprises the following steps：
Controller controls hydraulic control box tire is treated test block application active force P by hydraulically extensible bari, controller
Control headstock driving dolly to drive test specimen motion to be measured, tire is done on test specimen to be measured and continuously back and forth roll motion, until
Test specimen to be measured get on the bus rut depth be equal to predetermined limit rutting depth untill, obtain bituminous paving in real road engineering and reach capacity
The equivalent axles N of standard load is subjected to during rutting depth, wherein,Wherein, P is standard axle load, and n is to be tested
The reach capacity front tyre of rutting depth of part treats the rolling layer of test block.
The invention has the advantages that：
Asphalt of the present invention constrains test specimen wheel tracking test device and method in concrete operations, and pitch is mixed
Close material test specimen and be divided into three test specimens, then detect that obtaining test specimen to be measured under staff cultivation operating mode gets on the bus the depth d of rut1；Remove left and right
The second rubber blanket and side metal wooden partition of both sides, then detect that obtaining test specimen to be measured under local restriction operating mode gets on the bus the depth of rut
d2；Whole the second rubber blanket and the side metal wooden partition of whole are removed, then detects and obtains without under constraint operating mode on test specimen to be measured
The depth d of rut3, then calculate the free factor alpha of test specimen to be measured under staff cultivation operating mode1And test specimen to be measured under local restriction operating mode
Free factor alpha2, so that the stress restraint state of test specimen to be measured and the relation of rutting depth are disclosed, it is easy to operate, simply.Together
When, the present invention treats test block in concrete operations, by tire and applies active force Pi, then make tire company of doing on test specimen to be measured
It is continuous back and forth to roll motion, until test specimen to be measured get on the bus rut depth equal to untill predetermined limit rutting depth, obtain real road
In engineering bituminous paving reach capacity rutting depth when be subjected to the equivalent axles N of standard load, simple, convenient, test knot
Fruit is more accurate.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of controller 17 in the present invention；
Fig. 3 is the location diagram of base 13 and test specimen 12 to be measured in the present invention；
Fig. 4 is the location diagram of the rubber blanket 11 of test specimen 12 and second to be measured in the present invention；
Fig. 5 is the structural representation of dolly in the present invention.
Wherein, 1 it is environmental cabinet, 2 be shell, 3 be hydraulic control box, 4 be hydraulically extensible bar, 5 be tire, 6 is that longitudinal direction is tight
Gu screw, 7 be supporting plate, 8 be connecting rod, 9 be headstock, 10 be data wire, 11 be the second rubber blanket, 12 be test specimen to be measured, 13
For base, 14 be flat board, 15 be wheel, 16 be control panel, 17 be controller, 18 be display screen, 19 be slotted eye, 20 be side
Metal wooden partition, 21 are base fastening screw.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, asphalt of the present invention constrains test specimen wheel tracking test device bag
Include environmental cabinet 1, the shell 2 in environmental cabinet 1 and the controller 17 in shell 2, hydraulic control box 3, headstock 9,
Supporting plate 7, tire 5, dolly, connecting rod 8, base 13, four the first rubber blankets, four the second rubber blankets 11, side metal wooden partitions
20th, for detecting the pressure sensor of the active force between tire 5 and test specimen to be measured 12 and for detecting the vertical displacement of tire 5
Displacement transducer；Hydraulic control box 3 is fixed on the top of shell 2, and headstock 9 is located at the bottom of shell 2, the two ends of supporting plate 7
It is individually fixed on the side wall of shell 2, dolly is located in supporting plate 7, and base 13 is fixed on dolly, is offered in supporting plate 7
Slotted eye 19, wherein, the lower end of connecting rod 8 is connected with headstock 9, and the upper end of connecting rod 8 is connected through slotted eye 19 with the bottom of dolly
Connect, the middle part of the upper surface of base 13 is provided with rectangle boss, four sides of four the first rubber blankets respectively just to rectangle boss
Face, the side of the first rubber blanket is in contact with the side of rectangle boss, the upper surface of rectangle boss and four the first rubber
The upper surface flush of pad, test specimen 12 to be measured is located on rectangle boss and four the first rubber blankets, the upper surface of test specimen 12 to be measured
Provided with four the second rubber blankets 11, second rubber blanket 11 just to first rubber blanket, the lower end of side metal wooden partition 20
Side be connected with the side of base 13, the upper end of side metal wooden partition 20 curve inwardly and with the upper surface of the second rubber blanket 11
It is connected, the middle part of the side of side metal wooden partition 20 is connected with the end face of test specimen 12 to be measured, the output shaft of hydraulic control box 3 leads to
Cross hydraulically extensible bar 4 with tire 5 to be connected, tire 5 is located on test specimen 12 to be measured；The control end of controller 17 and headstock 9, liquid
The output end of control end, the control end of environmental cabinet 1, the output end of pressure sensor and the displacement transducer of control cabinet 3 is pressed to be connected
Connect.
The side of the lower end of side metal wooden partition 20 is connected with the side of base 13 by base fastening screw 21；Dolly bag
Flat board 14 and the wheel 15 positioned at the bottom of flat board 14 are included, wherein, wheel 15 is located in supporting plate 7, and base 13 is fixed on flat board
On 14, the upper end of connecting rod 8 is connected with flat board 14；Controller 17 include control panel 16, display screen 18 and with extraneous power supply phase
The power line of connection, wherein, control panel 16 and display screen 18, the control end of headstock 9, the control end of hydraulic control box 3, ring
The output end of the control end of border case 1, the output end of pressure sensor and displacement transducer is connected；Side metal wooden partition 20 it is upper
End curves inwardly and is connected by longitudinally secured screw 6 with the upper surface of the second rubber blanket 11；The side of side metal wooden partition 20
Middle part be connected with the end face of test specimen 12 to be measured by adhesive；Base 13 is fixed on flat board 14 by bottom screw.
The control of control end, the control end of hydraulic control box 3, environmental cabinet 1 that controller 17 passes through data wire 10 and headstock 9
The output end at end processed, the output end of pressure sensor and displacement transducer is connected.
The concrete operations of the wheel tracking test of test specimen 12 to be measured are：
First set tire 5 to be applied to the active force of test specimen 12 to be measured on controller 17, and rolling layer n is set, control
Device 17 controls hydraulic control box 3 to treat the application active force of test block 12 by hydraulically extensible bar 4 and tire 5, and then headstock 9 leads to
Cross connecting rod 8 and drive trolley travelling, so as to realize that tire 5 treats rolling for test block 12, detect wheel in real time by pressure sensor
Tire 5 treats the active force of test block 12, and the active force that tire 5 is treated into test block 12 is forwarded to controller 17, controller 17
The force profile of test block 12 is treated by the display of tyre 5 of display screen 18, when the rolling layer that tire 5 treats test block 12 reaches
During to setting number of times, headstock 9 is stopped, and then measures the rutting depth on the surface of test specimen 12 to be measured.
In real road engineering, the difference of category of roads, road surface is also correspondingly formed different degrees of rut, multilane
Highway, its pavement track is typically less, not only good relevant with design level height and materials quality, also as in vehicle traveling
During remaining track the support effect of cross force is provided for stress track, the track being so stressed directly is ground repeatedly in load
The lateral displacement of pressure will just reduce, and then the rutting depth ultimately formed is just smaller；For low-grade highway, number of lanes compared with
It is few, the mutual underbraced between each plate of road surface, then road surface is easier to occur greatly under the repeated action of vehicular load
Scale rut.It is an object of the invention to study the rutting depth that test specimen 12 to be measured is formed under the constraints of different power
Difference, and the relation probed between rutting depth and constraints.
Asphalt constraint test specimen wheel tracking test method of the present invention comprises the following steps：
Bitumen mixture specimen is divided into three test specimens, first test specimen is installed on into pitch as test specimen 12 to be measured mixes
Close in material constraint test specimen wheel tracking test device, controller 17 controls hydraulic control box 3 to make tire 5 pair the by hydraulically extensible bar 4
One test specimen applies active force, and the control driving dolly of headstock 9 of controller 17 drives first test specimen, makes tire 5 at first
The reciprocal wheel tracking test for rolling motion, completing first test specimen is done on test specimen, test specimen 12 to be measured under all constraint operating modes is obtained and gets on the bus
The depth d of rut1；
First test specimen is replaced by second test specimen, then removes the second rubber blanket 11 and side metal plate of the left and right sides
Wall 20, controller 17 controls hydraulic control box 3 second test specimen of tire 5 pair is applied active force, control by hydraulically extensible bar 4
The control driving dolly of headstock 9 of device 17 drives second test specimen, tire 5 is done on second test specimen and back and forth rolls motion, complete
Into the wheel tracking test of second test specimen, the depth d of rut on test specimen 12 to be measured under local restriction operating mode is obtained2；
Second test specimen is replaced by the 3rd test specimen, then removes the second all rubber blankets 11 and all side metal wooden partitions
20, controller 17 controls hydraulic control box 35 pair of the 3rd test specimen of tire is applied active force, controller 17 by hydraulically extensible bar 4
Control the driving dolly of headstock 9 to drive the 3rd test specimen, tire 5 is done on the 3rd test specimen and back and forth roll motion, complete the 3rd and try
The wheel tracking test of part, is obtained without the depth d for constraining rut on test specimen 12 to be measured under operating mode3；
Calculate the free factor alpha of test specimen 12 to be measured under staff cultivation operating mode1, wherein,Calculate under local restriction operating mode
The free factor alpha of test specimen 12 to be measured2, wherein,
Asphalt constraint test specimen wheel tracking test method of the present invention comprises the following steps：
Controller 17 controls hydraulic control box 3 tire 5 is treated the application active force of test block 12 by hydraulically extensible bar 4
Pi, the control driving dolly of headstock 9 of controller 17 drives test specimen 12 to be measured to move, tire 5 is done on test specimen 12 to be measured continuously
Motion back and forth is rolled, untill the depth of rut on test specimen 12 to be measured is equal to predetermined limit rutting depth, real road work is obtained
In journey bituminous paving reach capacity rutting depth when be subjected to the equivalent axles N of standard load, wherein,Wherein, P
For standard axle load, n is that the reach capacity front tyre 5 of rutting depth of test specimen 12 to be measured treats the rolling layer of test block 12.
Claims (9)
1. a kind of asphalt constrains test specimen wheel tracking test device, it is characterised in that including environmental cabinet (1), positioned at environmental cabinet
(1) shell (2) in and the controller (17) in shell (2), hydraulic control box (3), headstock (9), supporting plate
(7), tire (5), dolly, connecting rod (8), base (13), four the first rubber blankets, four the second rubber blankets (11), side metals
Wooden partition (20), the pressure sensor for detecting the active force between tire (5) and test specimen to be measured (12) and for detecting tire
(5) displacement transducer of vertical displacement；
Hydraulic control box (3) is fixed on the top of shell (2), and headstock (9) is located at the bottom of shell (2), the two of supporting plate (7)
End is individually fixed on the side wall of shell (2), and dolly is located in supporting plate (7), and base (13) is fixed on dolly, supporting plate
(7) grooved hole (19) is opened up on, wherein, the lower end of connecting rod (8) is connected with headstock (9), and the upper end of connecting rod (8) passes through slotted eye
(19) it is connected with the bottom of dolly, the middle part of base (13) upper surface is provided with rectangle boss, four the first rubber blanket difference
Just to four sides of rectangle boss, the side of the first rubber blanket is in contact with the side of rectangle boss, rectangle boss
Upper surface and the upper surface flush of four the first rubber blankets, test specimen (12) to be measured is located at rectangle boss and four the first rubber
On pad, the upper surface of test specimen (12) to be measured is provided with four the second rubber blankets (11), and second rubber blanket (11) is just to one the
One rubber blanket, the side of side metal wooden partition (20) lower end is connected with the side of base (13), side metal wooden partition (20)
Upper end curves inwardly and is connected with the upper surface of the second rubber blanket (11), the middle part of side metal wooden partition (20) side with it is to be measured
The end face of test specimen (12) is connected, and the output shaft of hydraulic control box (3) is connected by hydraulically extensible bar (4) with tire (5), wheel
Tire (5) is located on test specimen to be measured (12)；
Controller (17) and the control end of headstock (9), the control end of hydraulic control box (3), the control end of environmental cabinet (1), pressure
The output end of force snesor and the output end of displacement transducer are connected.
2. asphalt according to claim 1 constrains test specimen wheel tracking test device, it is characterised in that side metal plate
The side of wall (20) lower end is connected with the side of base (13) by base fastening screw (21).
3. asphalt according to claim 1 constrains test specimen wheel tracking test device, it is characterised in that dolly includes flat
Plate (14) and the wheel (15) positioned at flat board (14) bottom, wherein, wheel (15) is located in supporting plate (7), and base (13) is solid
Due on flat board (14), the upper end of connecting rod (8) is connected with flat board (14).
4. asphalt according to claim 1 constrains test specimen wheel tracking test device, it is characterised in that controller (17)
Including control panel (16), display screen (18) and the power line being connected with extraneous power supply, wherein, control panel (16) and display
Shield (18), the control end of headstock (9), the control end of hydraulic control box (3), the control end of environmental cabinet (1), pressure sensor
Output end and the output end of displacement transducer are connected.
5. asphalt according to claim 1 constrains test specimen wheel tracking test device, it is characterised in that side metal plate
The upper end of wall (20) curves inwardly and is connected by longitudinally secured screw (6) with the upper surface of the second rubber blanket (11).
6. asphalt according to claim 1 constrains test specimen wheel tracking test device, it is characterised in that side metal plate
The middle part of wall (20) side is connected with the end face of test specimen to be measured (12) by adhesive.
7. asphalt according to claim 1 constrains test specimen wheel tracking test device, it is characterised in that base (13) leads to
Bottom screw is crossed to be fixed on flat board (14).
8. a kind of asphalt constrains test specimen wheel tracking test method, it is characterised in that mixed based on the pitch described in claim 1
Material constraint test specimen wheel tracking test device is closed, is comprised the following steps：
Bitumen mixture specimen is divided into three test specimens, first test specimen is installed on into pitch as test specimen to be measured (12) mixes
In material constraint test specimen wheel tracking test device, controller (17) control hydraulic control box (3) makes tire by hydraulically extensible bar (4)
(5) active force is applied to first test specimen, controller (17) control headstock (9) driving dolly drives first test specimen, makes wheel
Tire (5) does the reciprocal wheel tracking test for rolling motion, completing first test specimen on first test specimen, obtains and is treated under all constraint operating modes
The depth d of rut on test block (12)1；
First test specimen is replaced by second test specimen, then removes the second rubber blanket (11) and side metal wooden partition of the left and right sides
(20), controller (17) control hydraulic control box (3) makes tire (5) apply work to second test specimen by hydraulically extensible bar (4)
Firmly, controller (17) control headstock (9) driving dolly drives second test specimen, tire (5) is done on second test specimen
It is reciprocal to roll motion, the wheel tracking test of second test specimen is completed, the depth of rut on test specimen (12) to be measured under local restriction operating mode is obtained
Spend d2；
Second test specimen is replaced by the 3rd test specimen, then removes all the second rubber blankets (11) and all side metal wooden partitions
(20), controller (17) control hydraulic control box (3) makes tire (5) act on the 3rd test specimen application by hydraulically extensible bar (4)
Power, controller (17) control headstock (9) driving dolly drives the 3rd test specimen, tire (5) is made reciprocal stone roller on the 3rd test specimen
Pressure motion, completes the wheel tracking test of the 3rd test specimen, obtains without the depth d for constraining rut on test specimen (12) to be measured under operating mode3；
Calculate the free factor alpha of test specimen (12) to be measured under staff cultivation operating mode1, wherein,Calculate and treated under local restriction operating mode
The free factor alpha of test block (12)2, wherein,
9. a kind of asphalt constrains test specimen wheel tracking test method, it is characterised in that mixed based on the pitch described in claim 1
Material constraint test specimen wheel tracking test device is closed, is comprised the following steps：
Controller (17) control hydraulic control box (3) makes tire (5) treat test block (12) application work by hydraulically extensible bar (4)
Firmly Pi, controller (17) control headstock (9) driving dolly drives test specimen (12) to be measured motion, makes tire (5) to be tested
Done on part (12) and continuously back and forth roll motion, until the depth of rut is equal to predetermined limit rutting depth on test specimen to be measured (12)
Only, obtain bituminous paving in real road engineering reach capacity rutting depth when be subjected to the equivalent axles N of standard load, wherein,Wherein, P is standard axle load, and n is that the reach capacity front tyre (5) of rutting depth of test specimen to be measured (12) is treated
The rolling layer of test block (12).
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| CN201710283596.4A CN107132137B (en) | 2017-04-26 | 2017-04-26 | A kind of asphalt constraint test specimen wheel tracking test device and method |
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| CN201710283596.4A CN107132137B (en) | 2017-04-26 | 2017-04-26 | A kind of asphalt constraint test specimen wheel tracking test device and method |
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| CN107132137B CN107132137B (en) | 2019-08-06 |
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| CN108614094A (en) * | 2018-05-12 | 2018-10-02 | 张中华 | The experimental rig and method of performance of asphalt mixture under load-osmotic pressure coupling |
| CN110044741A (en) * | 2019-04-29 | 2019-07-23 | 山东省交通科学研究院 | A kind of multipoint mode asphalt high temperature anti-rut behavior evaluation method |
| CN110618050A (en) * | 2019-09-27 | 2019-12-27 | 长安大学 | Base material washout test device based on wheel load |
| CN110658087A (en) * | 2019-10-18 | 2020-01-07 | 温州大学 | Piezoelectric road test device under simulation traffic load effect |
| CN110823659A (en) * | 2019-11-21 | 2020-02-21 | 云南省公路科学技术研究院 | Vibration wheel-grinding forming instrument for asphalt mixture track test piece and using method thereof |
| CN116296929A (en) * | 2023-05-08 | 2023-06-23 | 昆明理工大学 | Iron tailing sand asphalt concrete rutting test device |
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