CN106769411A - A kind of pavement structure interlayer shearing test device - Google Patents
A kind of pavement structure interlayer shearing test device Download PDFInfo
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- CN106769411A CN106769411A CN201611205961.1A CN201611205961A CN106769411A CN 106769411 A CN106769411 A CN 106769411A CN 201611205961 A CN201611205961 A CN 201611205961A CN 106769411 A CN106769411 A CN 106769411A
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- loading
- pavement structure
- groove position
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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
- G01N3/02—Details
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to field of road, more particularly to a kind of pavement structure interlayer shearing test device.First aspect present invention provides a kind of pavement structure interlayer shearing test device, including support, the support is provided with fixing groove position, vertical tangential loading loading device and horizontal loading loading device, the vertical tangential loading loading device and horizontal loading loading device are located at the both sides of fixing groove position respectively, the vertical tangential loading loading device includes the vertical tangential loading loading pedestal on support and the vertical tangential loading loading groove position on vertical tangential loading loading pedestal, the position of the vertical tangential loading loading groove position is engaged with the position of fixing groove position.Pavement structure interlayer shearing test device provided by the present invention and pavement structure interlayer shearing test method, can the interlayer state of solving road engineering double-decker well test problem.
Description
Technical field
The present invention relates to field of road, more particularly to a kind of pavement structure interlayer shearing test device goes forward side by side one
Step provides a kind of pavement structure interlayer shearing test method, and the experimental rig and method can be used for road engineering double-decker
Interlayer shear state.
Background technology
High-performance asphalt surface course (formation composite runway pavement) is overlayed on Deteriorated concrete pavement road face, can not only be effectively improved
The structural bearing capacity in face, improves road face functional performance, and can implement under the conditions of not suspending, and is the master that airfield pavement is overlayed
Stream mode.The existing road face of China is based on cement concrete, wherein nearly 1/3 runway will be implemented to overlay at following 10 years, in advance
Composite runway pavement and quantity are counted by rapid growth.
In composite runway pavement structure design with evaluation, the interlayer proterties in asphalt overlay and Deteriorated concrete pavement road face is to determine
Design and evaluate rational central factor calmly.In traditional structural analysis, the interlayer for typically simply assuming composite runway pavement is
Completely continuous or a certain particular state, due to lacking the efficient association with actual conditions, often leads to design with evaluation result
It is unreasonable.In order to adapt to build the demand of a large amount of high-quality composite runway pavements, the analysis of interlayer in the urgent need to address and evaluation problem,
Its basis is the Mechanical Characters of Composite Ground and development law for grasping interlayer, and its solution is that the layer in road face is detected by Experimental Method in Laboratory
Between state.
At present, for the problem of composite runway pavement interlayer state, the uniform tests for obtaining extensive certification is not set up still in the world
Method, the method that various countries are used all is differed in test procedure, equipment and parameter etc..Part existing equipment is only capable of completion cannot
To the interlayer shear-strength test under load action, and the stressing conditions between surface layer under large aircraft load action are not met.Cause
This, the present invention is by improving existing instrument and equipment, there is provided a kind of interlayer state for detecting airport composite runway pavement of science
Direct shear test device, and may extend to the interlayer state verification application of field of road double-decker.
The content of the invention
The shortcoming of prior art, tries it is an object of the invention to provide a kind of shearing of pavement structure interlayer in view of the above
Experiment device, and a kind of pavement structure interlayer shearing test method is further provided for, for solving the problems of the prior art.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of pavement structure interlayer shearing examination
Experiment device, including support, the support are provided with fixing groove position, vertical tangential loading loading device and horizontal loading loading dress
Put, the vertical tangential loading loading device and horizontal loading loading device are described vertical respectively positioned at the both sides of fixing groove position
Tangential loading loading device includes that the vertical tangential loading on support loads pedestal and loads base positioned at vertical tangential loading
Vertical tangential loading loading groove position on seat, the position of the vertical tangential loading loading groove position matches with the position of fixing groove position
Close.
In some implementation methods of the invention, the vertical tangential loading loading groove position is with fixing groove position in the horizontal direction
Leave spacing.
In some implementation methods of the invention, the vertical tangential loading loading pedestal includes loading base body and flexible
Device, the base body is connected by retractor device with support.
In some implementation methods of the invention, it is additionally provided with the support for guiding vertical tangential loading loading pedestal to move
The guider in dynamic direction.
In some implementation methods of the invention, the horizontal loading loading device is provided with pull pressure sensor.
In some implementation methods of the invention, the horizontal loading loading device includes hydraulic transmission, the hydraulic pressure
Transmission device is provided with driving member.
Second aspect present invention provides a kind of pavement structure interlayer shearing test method, is cut using the pavement structure interlayer
Experimental rig is cut, is comprised the following steps：
(1) pavement structure test specimen is placed in fixing groove position, and is located at the interface of the structure sheaf of pavement structure test specimen
Between vertical tangential loading loading groove position and fixing groove position；
(2) horizontal loading loading device road pavement structural test piece applies horizontal loading；
(3) tangential loading loading device road pavement structural test piece applies vertical tangential loading vertically.
In some implementation methods of the invention, the displacement point occurred by vertical tangential loading and/or pavement structure test specimen
Analyse the interlayer state of the interface of the structure sheaf of pavement structure test specimen.
In some implementation methods of the invention, in the step (3), apply Vertical Load to pavement structure test specimen and produced to it
Raw failure by shear.
Pavement structure interlayer shearing test device provided by the present invention and pavement structure interlayer shearing test method, can be with
The test problem of the interlayer state of solving road engineering double-decker well, by the straight of laboratory test specimen or live core sample
Shearing test is connect, the interlayer Mechanical Characters of Composite Ground and development law on road surface can be grasped, evaluating the interlayer adhesion that various structures are combined
The shear behavior attenuation on existing road surface, can be estimated, for the design and evaluation on road surface provide the research technique of science.
Brief description of the drawings
Fig. 1 is shown as side view of the present invention.
Fig. 2 is shown as dimensional structure diagram of the present invention.
Component label instructions
1 support
2 fixing grooves position
3 vertical tangential loading loading devices
31 vertical tangential loading loading pedestals
311 base bodies
312 retractor devices
32 vertical tangential loading loading groove positions
33 guiders
4 horizontal loading loading devices
41 hydraulic transmissions
42 driving members
5 pull pressure sensor
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages of the invention and effect easily.
Refer to Fig. 1 to Fig. 2.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to
Coordinate the content disclosed in specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where effect that can be generated of the invention and the purpose to be reached is not influenceed, all should still fall in disclosed skill
In the range of art content is obtained and can covered.Meanwhile, in this specification it is cited as " on ", D score, "left", "right", " centre " and
The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness
It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
As shown in Figure 1-2, the present invention provides a kind of pavement structure interlayer shearing test device, including support 1, the support
1 is provided with fixing groove position 2, vertical tangential loading loading device 3 and horizontal loading loading device 4, and the vertical tangential loading adds
Carry put 3 and horizontal loading loading device 4 be located at the both sides of fixing groove position 2 respectively, the vertical tangential loading loading device 3 wraps
Include the vertical tangential loading loading pedestal 31 on support 1 and the vertical tangential lotus on vertical tangential loading loading pedestal
Loading groove position 32 is carried, the position of the vertical tangential loading loading groove position 32 is engaged with the position of fixing groove position 2.It is described vertical
Tangential loading loading groove position 32 can be hollow cylinder groove of the opening towards fixing groove position 2, and the cross section of cylinder is straight
Footpath can be 10-20cm, highly can be 3-7cm, and fixing groove position 2 can be hollow semicolumn, its cross-sectional diameter with it is perpendicular
Straight tangential loading loading groove position 32 is engaged, and the height of fixing groove position 2 can be that (short transverse of groove position is level to 10-15cm
Direction).
In pavement structure interlayer shearing test device provided by the present invention, vertical tangential loading loads groove position 32 and fixes
Spacing is left in groove position 2 in the horizontal direction, and spacing can be 0.8-1.2cm.So that the boundary of the structure sheaf of pavement structure test specimen
Face may be located between vertical tangential loading loading groove position and fixing groove position, and as a rule, pavement structure test specimen is preferentially fixed on
On fixing groove position 2.The position of the vertical tangential loading loading groove position 32 generally matches with the position of horizontal loading loading device 4
Close, horizontal loading loading device 4 can apply horizontal loading, horizontal loading loading device 4 so applying with road pavement structural test piece
Horizontal loading be generally directed towards vertical tangential loading loading groove position 32.
In pavement structure interlayer shearing test device provided by the present invention, the vertical tangential loading loading pedestal 31 can
So that including loading base body 311 and retractor device 312, the base body 311 is connected by retractor device 312 with support 1,
Moved such that it is able to make base body 311 make vertical direction, such that it is able to make vertical tangential loading loading device road pavement structure
Test specimen applies vertical tangential loading, and the retractor device 312 can be such as spring etc., and the coefficient of elasticity of spring can be
5500-6500N/m.It is also provided with the support 1 for guiding leading for the vertical tangential loading loading moving direction of pedestal 31
To device 33, for example, guider 33 can include bearing and the axis of guide, the axis of guide can be located at erecting on support 1
Straight metallic rod, the bearing can be connected and be socketed on the axis of guide with base body 311, such that it is able to guide base body
Moving direction during 311 vertical shift.
Can be with pavement structure interlayer shearing test device provided by the present invention, on the horizontal loading loading device 4
Pressure (pulling force and pressure) sensor 5 is provided with, such that it is able to show that horizontal loading loading device 4 is applied to pavement structure test specimen
Horizontal loading, the precision of the sensor can be more than 3 ‰.The horizontal loading loading device 4 can be passed including hydraulic pressure
Dynamic device 41, the hydraulic transmission 41 is provided with driving member 42, and the driving member 42 can apply hydraulic transmission 41
Plus horizontal loading pass to pavement structure test specimen.The hydraulic transmission 41 can be hydraulic cylinder etc., the driving member 42
Can be rosette, the card of the rosette generally fits in pavement structure test specimen.
In pavement structure interlayer shearing test device provided by the present invention, the support 1, fixing groove position 2, base body
311st, the part such as vertical tangential loading loading groove position 32, driving member 42 can generally be prepared using high-strength material, for example can be with
It is ferroalloy materials.
The pavement structure interlayer shearing test that the pavement structure interlayer shearing test device provided using the present invention is carried out
The detailed process of method is as follows：
(1) experimental rig of the invention is arranged on universal testing machine, makes the seaming chuck alignment test of universal testing machine
The base body of device.
(2) pavement structure test specimen is obtained, is obtained (or being prepared from by laboratory) from existing pavement structure core boring sampling.Road
Face structural test piece is two-layer compound test specimen, and bottom is the circle of diameter 15cm, and total height 10cm, the height per Rotating fields is
5cm。
(3) test specimen is horizontally placed on the test specimen groove position of experimental rig, fixing groove position is preferentially filled up, makes the friendship of pavement structure test specimen
Interface is located in two gaps of test specimen groove position.
(4) start hydraulic transmission, horizontal loading applied to test specimen by rosette, by pull pressure sensor and
Display instrument control load size.
(5) start universal testing machine, vertical tangential loading is applied until it produces shearing broken to test specimen by base body
It is bad.
(6) universal testing machine is stopped, experimental rig is in situ by spring-return, removes test specimen.
(7) by the tangential Vertical Load of computer recording and the tangential displacement data of test specimen, and it is bent to draw shear load-displacement
Line.
(8) the interlayer state of pavement structure test specimen is analyzed by trial curve.
In sum, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
Into all equivalent modifications or change, should be covered by claim of the invention.
Claims (9)
1. a kind of pavement structure interlayer shearing test device, it is characterised in that including support (1), the support (1) is provided with solid
Determine groove position (2), vertical tangential loading loading device (3) and horizontal loading loading device (4), the vertical tangential loading loading dress
Put the both sides that (3) and horizontal loading loading device (4) are located at fixing groove position (2) respectively, the vertical tangential loading loading device
(3) pedestal (31) is loaded and on vertical tangential loading loading pedestal including the vertical tangential loading on support (1)
Vertical tangential loading loading groove position (32), the position of vertical tangential loading loading groove position (32) and the position of fixing groove position (2)
Put and be engaged.
2. a kind of as claimed in claim 1 pavement structure interlayer shearing test device, it is characterised in that tangential lotus vertically
Carry loading groove position (32) and leave spacing in the horizontal direction with fixing groove position (2).
3. a kind of as claimed in claim 1 pavement structure interlayer shearing test device, it is characterised in that the vertical cutting
Loading pedestal (31) to load includes loading base body (311) and retractor device (312), and the base body (311) passes through
Retractor device (312) is connected with support (1).
4. a kind of as claimed in claim 1 pavement structure interlayer shearing test device, it is characterised in that the support
(1) guider (33) for guiding vertical tangential loading to load pedestal (31) moving direction is additionally provided with.
5. a kind of as claimed in claim 1 pavement structure interlayer shearing test device, it is characterised in that the horizontal lotus
Carry loading device (4) and be provided with pull pressure sensor (5).
6. a kind of as claimed in claim 1 pavement structure interlayer shearing test device, it is characterised in that the horizontal lotus
Carrying loading device (4) includes hydraulic transmission (41), and the hydraulic transmission (41) is provided with driving member (42).
7. a kind of pavement structure interlayer shearing test method, is tied using the road surface as described in claim 1-6 any claims
Structure interlayer shear-strength test device, comprises the following steps：
(1) pavement structure test specimen is placed in fixing groove position, and the interface of the structure sheaf of pavement structure test specimen is located at vertically
Between tangential loading loading groove position and fixing groove position；
(2) horizontal loading loading device road pavement structural test piece applies horizontal loading；
(3) tangential loading loading device road pavement structural test piece applies vertical tangential loading vertically.
8. a kind of pavement structure interlayer shearing test method as claimed in claim 7, it is characterised in that by vertical tangentially lotus
The interlayer state of the interface of the structure sheaf of the Displacement Analysis pavement structure test specimen that load and/or pavement structure test specimen occur.
9. a kind of pavement structure interlayer shearing test method as claimed in claim 7, it is characterised in that in the step (3),
Apply Vertical Load to pavement structure test specimen and produce failure by shear to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205961.1A CN106769411B (en) | 2016-12-23 | 2016-12-23 | Interlayer shear test device for pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611205961.1A CN106769411B (en) | 2016-12-23 | 2016-12-23 | Interlayer shear test device for pavement structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106769411A true CN106769411A (en) | 2017-05-31 |
| CN106769411B CN106769411B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611205961.1A Active CN106769411B (en) | 2016-12-23 | 2016-12-23 | Interlayer shear test device for pavement structure |
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| AU8053487A (en) * | 1986-10-31 | 1988-05-05 | William Ian Wood | Pavement testing machine and method of testing pavements |
| JPH10325788A (en) * | 1997-05-26 | 1998-12-08 | Fujita Corp | Apparatus and method for test of shear strength of bedrock in original position |
| CA2330431A1 (en) * | 2001-01-08 | 2002-07-08 | Stephen Norman Goodman | In situ shear strength test facility |
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