CN104655557B - The equipment that measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer - Google Patents
The equipment that measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer Download PDFInfo
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- CN104655557B CN104655557B CN201310594391.XA CN201310594391A CN104655557B CN 104655557 B CN104655557 B CN 104655557B CN 201310594391 A CN201310594391 A CN 201310594391A CN 104655557 B CN104655557 B CN 104655557B
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Abstract
It is coupled the equipment of anti-staight scissors performance with semi-rigid type base interlayer the invention discloses a kind of measurement asphalt surface course, it includes：Reaction frame；Test piece base, its at least a portion is fixed to the reaction frame, and the height of the test piece base corresponds to the thickness of semi-rigid type base in test specimen；Vertical load loading device, it includes vertical load generating unit, vertical load loading component, vertical load top and bearing plate；And horizontal load loading device, it includes horizontal load generating unit, horizontal load loading component and horizontal load top；Wherein, the vertical load generating unit applies 10 20KN pressure at right angle by vertical load loading component, vertical load top and bearing plate to test specimen；The horizontal load generating unit applies 0 50KN horizontal pressure force by horizontal load loading component and horizontal load top to test specimen, and the loading velocity of the horizontal pressure force is 1mm/min.
Description
Technical field
It is coupled the equipment of anti-staight scissors performance with semi-rigid type base interlayer the present invention relates to a kind of evaluation asphalt surface course, particularly
The measurement asphalt surface course for being related to a kind of displacement controllable is coupled the equipment of anti-staight scissors performance with semi-rigid type base interlayer.
Background technology
For semi-rigid asphalt pavement, it is ensured that good anti-shear performance ten between semi-rigid type base and asphalt surface course
Divide important.If surface layer is bad with basic unit anti-shear performance, asphalt surface course can be caused rut occur, gather around the diseases such as bag, crack, passage
Evil, substantially reduce the service life of highway.
In order to evaluate the anti-shear performance that semi-rigid type base is coupled with asphalt surface course interlayer, correlation is carried out both at home and abroad and has ground
To study carefully, however, due to not having clear and definite construction technique normalizing, cause test method is in disorder to differ, test apparatus is uneven, and
And these instruments be mostly from During Geotechnical Tests instrument reform, horizontal thrust effect under can with unqualified movement, if examination
It is not only meaningless to test the larger shear displacemant of generation, can also disturb normal reading.Simultaneously also without be used for be molded semi-rigid type base with
The die trial of asphalt surface course bilayer test specimen is big with shear after test block forming often using taking turns milling process forming double-layer test block
It is small not consistent, it is necessary to polish it, so structural plane can be caused to send out the standard for into slip, ultimately resulting in experiment before shearing
True property is by larger interference.
The information for being disclosed in the background of invention technology segment is merely intended to deepen the reason of the general background technology to the present invention
Solution, and be not construed as recognizing or imply known to those skilled in the art existing of the information structure in any form
Technology.
The content of the invention
It is an object of the invention to provide a kind of measurement asphalt surface course to be coupled setting for anti-staight scissors performance with semi-rigid type base interlayer
It is standby.The equipment can simulate the characteristics of asphalt surface course and semi-rigid type base interlayer and use environment, be molded the semi-rigid of different-thickness
Basic unit and asphalt surface course bilayer test specimen, and asphalt surface course and semi-rigid type base interlayer are evaluated by Bit andits control horizontal thrust
The anti-shear performance of connection.Meanwhile the equipment both can be used for job site, indoor detection can be used for.
To achieve the above object, the invention provides one kind measurement asphalt surface course to be coupled anti-staight scissors with semi-rigid type base interlayer
The equipment of performance, it includes：Reaction frame, it is rigid support；Test piece base, its at least a portion are fixed to the reaction frame,
And the height of the test piece base corresponds to the thickness of semi-rigid type base in test specimen；Vertical load loading device, it is included vertically
Load generating unit, vertical load loading component, vertical load top and bearing plate；Wherein, the vertical load generating unit
The reaction frame is fixed to, the bearing plate is arranged on the top of test specimen, and the vertical load loading component vertically may be used
The vertical load generating unit is movably attached to, the bottom of the vertical load loading component connects the vertical load top
Head, and when in use, the vertical load withstands on the center of the bearing plate, so as to apply vertical pressure to test specimen
Power；And horizontal load loading device, it includes horizontal load generating unit, horizontal load loading component and horizontal load top
Head；Wherein, the horizontal load loading component is slidably coupled on the reaction frame in the horizontal direction, and the horizontal load adds
The one end for carrying part is connected to the horizontal load generating unit, and the other end of the horizontal load loading component connects the water
Flat load top, the shape for the contact surface that horizontal load top contacts with test specimen correspond to the shape of the outer surface of test specimen；And
And it is provided with horizontal pressure force sensor and horizontal displacement sensors on the horizontal load loading component；Wherein, the vertical load
Lotus generating unit applies 10-20KN vertical pressure by vertical load loading component, vertical load top and bearing plate to test specimen
Power；The horizontal load generating unit applies 0-50KN water by horizontal load loading component and horizontal load top to test specimen
Concora crush power, and the loading velocity of the horizontal pressure force is 1mm/min.
The equipment that above-mentioned measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer also includes data acquisition
Control device and display device；Wherein, the data acquisition control device passes with the horizontal pressure force sensor and horizontal displacement
Sensor is electrically connected with, and receives the data of horizontal pressure force sensor and the horizontal displacement sensors output；Also, the data
Acquisition control device is also electrically connected with the display device, so as to which the data received are exported to the display after processing
Device.
The equipment that above-mentioned measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer also includes being used to be molded
The die trial of test specimen；The die trial include can vertical one be split into two two semi arches, its both sides respectively welding two bolts simultaneously be equipped with
One connecting rod, for dismantling die trial；Wherein, the die trial also includes multiple and its diameter identical clean steel pad, passes through group
The pad of different-thickness is closed, is molded the test specimen of different height.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, the test piece base
Including Part I and Part II；The Part I is fixed to the bottom of the side of the reaction frame, and the Part II can
Dismounting is connected to Part I, the inner surface configuration pair of the receiving portion of the test piece base of the Part I and Part II composition
Should be in the external surface shape of test specimen.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, and the test specimen includes
Asphalt surface course and semi-rigid type base and the interlayer being arranged between asphalt surface course and semi-rigid type base are coupled measure.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, the horizontal load
The contact site contacted with test specimen is come directly towards at the asphalt surface course.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, and the test specimen is straight
The thickness of footpath 150mm cylinder specimen, wherein semi-rigid type base is 80mm, and the thickness of asphalt surface course is 30mm, 40mm, 50mm
Or 80mm.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, the horizontal load
The contact surface that top contacts with test specimen is shaped as semi arch.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, the horizontal load
Generating unit includes servomotor and decelerator, the input of the output end connection reducer of the servomotor, the decelerator
Output end connects the horizontal load loading component, to apply loading velocity as 1mm/min to the horizontal load generating unit
Horizontal pressure force.
Above-mentioned measurement asphalt surface course is coupled with semi-rigid type base interlayer in the equipment of anti-staight scissors performance, the vertical load
Generating unit is motor or jack.
After the present invention takes above technical scheme, it has the advantages that：
1st, the characteristics of equipment of the invention can simulate asphalt surface course and semi-rigid type base interlayer and use environment, respectively into
The double-deck test specimen of type different-thickness, different attachment materials, and the good fit of test specimen and test piece base, it is ensured that experiment it is accurate
Property.
2nd, when in use, experiment loading procedure is to utilize Bit andits control loading velocity to equipment of the invention, and can be led to
Cross display device and show stress-time, displacement versus time, the data of stress-displacement.
3rd, equipment of the invention is relatively light, and each composition system and device works independently, convenient maintenance；And tear open
Unload flexibly, carrying easy to remove, therefore can both in-door and outdoor detection simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is Fig. 1 A-A diagrammatic cross-sections.
Embodiment
Shown in refer to the attached drawing, the invention provides one kind measurement asphalt surface course to be coupled anti-staight scissors with semi-rigid type base interlayer
The equipment of energy, it can include：
Reaction frame 1, the reaction frame 1 are rigid support, and reaction frame is mainly used to fix staight scissors test specimen, and when staight scissors are provided
Act on counter-force；
Test piece base 2, its at least a portion is fixed to reaction frame 1, and the height of the test piece base 2 corresponds to test specimen
The thickness of semi-rigid type base in 100；
Vertical load loading device 4, it includes vertical load generating unit 41, vertical load loading component 42, vertical load
Lotus top 43 and bearing plate 44；Wherein, vertical load generating unit 41 is fixed to reaction frame 1, and bearing plate 44 is arranged on test specimen 100
Top, vertical load loading component 42 is attached to vertical load generating unit 41 movably in a vertical direction, the vertical load
The bottom connection vertical load top 43 of lotus loading component 42, and when in use, vertical load top 43 withstands on bearing plate
44 center, so as to apply pressure at right angle to test specimen 100；
Horizontal load loading device 5, it includes horizontal load generating unit 51, horizontal load loading component 52 and horizontal load
Lotus top 53；Wherein, horizontal load loading component 52 is slidably coupled on reaction frame 1 in the horizontal direction, the horizontal load
One end of loading component 52 is connected to horizontal load generating unit 51, and the other end of the horizontal load loading component 52 connects water
Flat load top 53, the shape for the contact surface that horizontal load top 53 contacts with test specimen 100 correspond to the outer surface of test specimen 100
Shape；Also, horizontal pressure force sensor and horizontal displacement sensors are provided with horizontal load loading component 52（It is not shown）；
Wherein, vertical load generating unit 41 passes through vertical load loading component 42, vertical load top 43 and bearing plate
44 pairs of test specimens 100 apply 10-20KN pressure at right angle（It is 0.6~1.1MPa to be converted to pressure）；Horizontal load generating unit 51
The 53 couples of application of test specimens 100 0-50KN horizontal pressure force, and the water are come directly towards by horizontal load loading component 52 and horizontal load
The loading velocity of concora crush power is 1mm/min.
In the present invention, measurement asphalt surface course, which is coupled the equipment of anti-staight scissors performance with semi-rigid type base interlayer, to include
Data acquisition control device and display device（It is not shown）；Wherein, data acquisition control device and horizontal pressure force sensor and water
Prosposition displacement sensor is electrically connected with, and receives the data of horizontal pressure force sensor and horizontal displacement sensors output；Also, data
Acquisition control device is also electrically connected with display device, so as to which the data received are exported to display device after processing.
Data acquisition control device can be realized by technical means commonly used by such a person skilled in the art, because level is pressed
Force snesor sensing be horizontal pressure force data and horizontal displacement sensors sensing be displacement data, therefore, data are adopted
Data after collection control device processing can be the relation of horizontal pressure force and time（That is stress time curve）, or displacement with
The relation of time（That is displacement-time curve）, or horizontal pressure force and the relation of displacement（That is stress-displacement curve）.It is in addition, defeated
These data gone out to display device can also be stored or printed；Also, the display of these data can be real-time.
In the present invention, measurement asphalt surface course, which is coupled the equipment of anti-staight scissors performance with semi-rigid type base interlayer, to include
Die trial for shaping test piece（It is not shown）.The die trial can include can vertical one be split into two two semi arches, its both sides
Respectively one connecting rod of two bolts of welding and outfit, for dismantling die trial；Wherein, the die trial also includes multiple with its diameter phase
Same clean steel pad, by combining the pad of different-thickness, can be molded the test specimen of different height.
In one embodiment of the invention, the thickness of the die trial is 15mm, a diameter of 150mm, is highly 240mm, and
And die trial is made using clean steel.In order to control the thickness of semi-rigid type base and asphalt surface course, the supporting mould is made a diameter of
150mm, thickness is respectively 30mm, 40mm, 50mm clean steel pad, by combining the pad of different-thickness, then can be molded not
Level test specimen.For example, cylinder specimen of the test specimen for diameter 150mm, the wherein thickness of semi-rigid type base are 80mm, interlayer
Connection measure is that emulsified asphalt class, heat spill the interlayer management measures such as type pitch class, crushed stone sealing class, and thickness is in 5mm or so, not
In the case of increasing pad, the height of whole test specimen is 240mm；And if one 40mm of increase pad, the height of whole test specimen
Degree is then 200mm；Or in the case of one 40mm of increase pad and 50mm pad, the height of whole test specimen
For 150mm.Therefore, in the test specimen that the present invention is molded, the thickness of asphalt surface course can be 30mm, 40mm, 50mm or 80mm.
In one embodiment of the invention, test piece base 2 can include Part I 21 and Part II 22；This first
Part 21 is fixed to the bottom of the side of reaction frame 1, and the Part II 22 is removably connected to Part I 21, and this first
The inner surface configuration of the receiving portion for the test piece base 2 that part 21 and Part II 22 form corresponds to the external surface shape of test specimen.
That is, in the case where test specimen is cylinder, the inner surface of the receiving portion of test piece base 2 should also form corresponding cylinder
Shape.
Further, in the present invention, horizontal load generating unit 51 can include servomotor and decelerator, the servo
The input of the output end connection reducer of motor, the output end connection horizontal load loading component 52 of the decelerator, with to water
Flat load generating unit 52 applies the horizontal pressure force that loading velocity is 1mm/min.In addition, vertical load generating unit 41 can be
Motor or jack, vertical load generating unit 41 is motor in the embodiment shown in fig. 1.
Below, the use of the equipment of the present invention is illustrated with an instantiation.
First, using the die trial shaping test piece in the present invention, it can select the pad of different-thickness according to design requirement
（80mm semi-rigid type bases and 40mm asphalt surface courses are selected in this example）, the thick semi-rigid type bases of 80mm are molded using static pressure method
Test specimen, health terminate after in its surface smear attachment material（Crushed stone sealing, per square meter 1.5kg/m2Heated bitumen, above heated bitumen
Paving 10kg/m is spread again29.5mm~13.2mm rubbles, average thickness be 5mm be coupled measure between left and right）, material cooling to be coupled
Afterwards, test specimen is fitted into die trial again, using static pressure method in its upper shaping asphalt（Asphalt surface course thickness 40mm）Examination
Part, it is standby after the demoulding.
Then, the test specimen after shaping is placed in test piece base, and by the Part I and Part II of test piece base
Connection is to fasten test specimen, and the wherein height of test piece base should correspond to the thickness of semi-rigid type base in test specimen, that is to say, that interlayer
The level height of connection measure should have on the upper surface of test piece base so that test piece base will not be coupled measure to interlayer
The active force of horizontal direction.
Then, come directly towards using vertical load generating unit by vertical load loading component and vertical load by pressure at right angle
It is applied on bearing plate, and pressure is evenly applied on the upper surface of test specimen by bearing plate.The vertical load generating unit
Part can be with other devices such as motor or weight stack or jack.In this example, vertical load 0.7MPa, should
Vertical load is mainly used in the pressure of simulated automotive tire road pavement, and the ground connection pressure of automobile tire is in 0.6~1.1MPa, therefore
It is than convenient to be arranged on 0.7MPa.
After pressure at right angle is stable, the servomotor of horizontal load loading device is opened, and controls the rotating speed of servomotor
So that the loading velocity of horizontal pressure force is controlled in constant 1mm/min, pass through horizontal load loading component and horizontal load comes directly towards
Apply the horizontal pressure force of the 1mm/min loading velocities to test specimen.Wherein, the contact site that the horizontal load top contacts with test specimen
At the asphalt surface course, and correspondingly, contact surface that horizontal load top contacts with test specimen is shaped as semicircle
Arc, the semi arch is corresponding with the shape of the test specimen of cylinder, so as to which horizontal pressure force to be evenly applied to the drip of test specimen
At blue or green surface layer.
While horizontal pressure force is applied, horizontal pressure force sensor and horizontal displacement are obtained using data acquisition control device
The data of sensor, and gather and handle related data.
As horizontal load loading device constantly applies the horizontal pressure force of 1mm/min loading velocities, horizontal pressure force sensing
The level pressure value that device measures can gradually increase, and when reaching a certain numerical value, semi-rigid type base separates with asphalt surface course（That is layer
Between be coupled measure failure）, and the level pressure value that now horizontal pressure force sensor measures can decline to a great extent suddenly, and what this was measured
Maximum then can be used for evaluating the anti-shear performance between semi-rigid type base and asphalt surface course, i.e. the value is exactly that interlayer connection is arranged
Apply the maximum shearing resistance shearing stress that can bear.
Claims (9)
- A kind of 1. equipment for measuring asphalt surface course and being coupled anti-staight scissors performance with semi-rigid type base interlayer, it is characterised in that including：Reaction frame, it is rigid support；Test piece base, it is fixed to the reaction frame, and the height of the test piece base corresponds to semi-rigid type base in test specimen Thickness；Vertical load loading device, it includes vertical load generating unit, vertical load loading component, vertical load top and held Pressing plate；Wherein, the vertical load generating unit is fixed to the reaction frame, and the bearing plate sets and contacted on the top of test specimen Portion, the vertical load loading component are attached to the vertical load generating unit movably in a vertical direction, the vertical load The bottom of lotus loading component connects the vertical load top, and when in use, the vertical load withstands on described The center of bearing plate, so as to apply pressure at right angle to test specimen；AndHorizontal load loading device, it includes horizontal load generating unit, horizontal load loading component and horizontal load top；Its In, the horizontal load loading component is slidably coupled on the reaction frame in the horizontal direction, the horizontal load loading unit One end of part is connected to the horizontal load generating unit, and the other end of the horizontal load loading component connection level carries Lotus comes directly towards, and the shape for the contact surface that horizontal load top contacts with test specimen corresponds to the shape of the outer surface of test specimen；Also, institute State and horizontal pressure force sensor and horizontal displacement sensors are provided with horizontal load loading component；Wherein, the vertical load generating unit is come directly towards by vertical load loading component, vertical load and bearing plate is to test specimen Apply 10-20KN pressure at right angle；The horizontal load generating unit is come directly towards by horizontal load loading component and horizontal load Apply 0-50KN horizontal pressure force to test specimen, and the loading velocity of the horizontal pressure force is 1mm/min；The test piece base includes Part I and Part II；The Part I is fixed under the side of the reaction frame Portion, and the Part II is removably solidly connected to Part I, the appearance of the test piece base of the Part I and Part II composition Receive portion inner surface configuration correspond to test specimen external surface shape；Wherein, described measurement asphalt surface course, which is coupled the equipment of anti-staight scissors performance with semi-rigid type base interlayer, also includes data acquisition Control device and display device.
- 2. the equipment that measurement asphalt surface course according to claim 1 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The data acquisition control device is electrically connected with the horizontal pressure force sensor and horizontal displacement sensors, and receives institute State the data of horizontal pressure force sensor and horizontal displacement sensors output；Also, the data acquisition control device also with it is described Display device is electrically connected with, so as to which the data received are exported to the display device after processing.
- 3. the equipment that measurement asphalt surface course according to claim 2 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：Also include the die trial for shaping test piece；The die trial include can vertical one be split into two two semi arches, its both sides respectively welding two bolts simultaneously be equipped with a company Bar, for dismantling die trial；Wherein, the die trial also includes multiple and its diameter identical clean steel pad, passes through and combines difference The pad of thickness, it is molded the test specimen of different height.
- 4. the equipment that measurement asphalt surface course according to claim 1 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The test specimen includes asphalt surface course and semi-rigid type base and is arranged between asphalt surface course and semi-rigid type base Interlayer be coupled measure.
- 5. the equipment that measurement asphalt surface course according to claim 4 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The contact site that the horizontal load top contacts with test specimen is at the asphalt surface course.
- 6. the equipment that measurement asphalt surface course according to claim 4 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The test specimen is diameter 150mm cylinder specimen, and the wherein thickness of semi-rigid type base is 80mm, asphalt surface course Thickness be 30mm, 40mm, 50mm or 80mm.
- 7. the equipment that measurement asphalt surface course according to claim 6 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The contact surface that the horizontal load top contacts with test specimen is shaped as semi arch.
- 8. the equipment that measurement asphalt surface course according to claim 1 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The horizontal load generating unit includes servomotor and decelerator, and the output end connection of the servomotor is slowed down The input of device, the output end of the decelerator connects the horizontal load loading component, with to the horizontal load generating unit Apply the horizontal pressure force that loading velocity is 1mm/min.
- 9. the equipment that measurement asphalt surface course according to claim 1 is coupled anti-staight scissors performance with semi-rigid type base interlayer, its It is characterised by：The vertical load generating unit is motor or jack.
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| CN201310594391.XA CN104655557B (en) | 2013-11-21 | 2013-11-21 | The equipment that measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer |
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|---|---|---|---|
| CN201310594391.XA CN104655557B (en) | 2013-11-21 | 2013-11-21 | The equipment that measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer |
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| CN108240965B (en) * | 2017-12-06 | 2020-12-22 | 江西省高速公路投资集团有限责任公司 | Asphalt pavement interlayer bonding strength detection device and detection method thereof |
| CN110633505B (en) * | 2019-08-21 | 2021-02-05 | 西南交通大学 | Train operation safety evaluation method and device |
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| US4934185A (en) * | 1988-01-25 | 1990-06-19 | Mitsubishi Denki Kabushiki Kaisha | Device for measuring adhesive strength and shear strength of coated film |
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| CN2800265Y (en) * | 2005-05-12 | 2006-07-26 | 长安大学 | Tester for anti-shear performance of bituminous pavement structural layer |
| CN102207436A (en) * | 2010-07-26 | 2011-10-05 | 水利部交通运输部国家能源局南京水利科学研究院 | High performance direct shearing apparatus for large contact surfaces |
| CN203053776U (en) * | 2013-01-10 | 2013-07-10 | 长安大学 | Bituminous mixture Marshall specimen forming mould |
| CN203630026U (en) * | 2013-11-21 | 2014-06-04 | 交通运输部科学研究院 | Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer |
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- 2013-11-21 CN CN201310594391.XA patent/CN104655557B/en active Active
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|---|---|---|---|---|
| US4934185A (en) * | 1988-01-25 | 1990-06-19 | Mitsubishi Denki Kabushiki Kaisha | Device for measuring adhesive strength and shear strength of coated film |
| CN2800265Y (en) * | 2005-05-12 | 2006-07-26 | 长安大学 | Tester for anti-shear performance of bituminous pavement structural layer |
| CN1769859A (en) * | 2005-07-27 | 2006-05-10 | 马骉 | Instrument for testing shearing performance of pavement flexible material |
| CN102207436A (en) * | 2010-07-26 | 2011-10-05 | 水利部交通运输部国家能源局南京水利科学研究院 | High performance direct shearing apparatus for large contact surfaces |
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| CN104655557A (en) | 2015-05-27 |
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