CN209327137U - A kind of asphalt bilayer shearing test device - Google Patents
A kind of asphalt bilayer shearing test device Download PDFInfo
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- CN209327137U CN209327137U CN201822053058.9U CN201822053058U CN209327137U CN 209327137 U CN209327137 U CN 209327137U CN 201822053058 U CN201822053058 U CN 201822053058U CN 209327137 U CN209327137 U CN 209327137U
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Abstract
The utility model discloses a kind of asphalt bilayer shearing test devices, the double-deck shearing clamp including carrying out shearing test for clamping bitumen mixture specimen；The double-deck shearing clamp includes moveable centre panel and the two sides panel for being respectively arranged at centre panel opposite sides, centre panel forms two cavitys for placing bitumen mixture specimen between the panel of two sides respectively, and the double-deck shearing clamp further includes the bottom panel being fixed on mechanics machine and two guiding mechanisms for guiding centre panel to move；Double-shear fixture is by applying shearing force to two symmetrical test specimens, to offset generated horizontal force when shearing, the shearing test precision for improving asphalt, solve the shearing of traditional straight shear device because generation horizontal force caused by asphalt the lower defect of shearing test precision.
Description
Technical field
The utility model relates to asphalt the field of test technology more particularly to a kind of shearing examinations of asphalt bilayer
Experiment device.
Background technique
As the volume of traffic increases, axis, which carries, to be aggravated, and asphalt pavement rut phenomenon is more and more common on highway.Bituminous pavement
Track be formed as asphalt dense extrusion and shear-deformable coefficient result.Road insufficient for compactness
Face, initial stage compaction are more apparent；And or open to traffic good for compactness for a period of time after bituminous pavement, as axis carries
The increase of number, the asphalt below track generate isometric shear flow deformation, but due to causing by lateral compression
Mixture carries marginal swell in axis, forms track.
Cutting performance is the important mechanical index of asphalt, in close relations with the high-temperature stability of asphalt.
When using traditional direct shearing device, since test specimen has certain thickness, will generate one under shearing action rotates test specimen
Torque, cause shear plane to deviate, influence experimental results, while Lateral Force is in shear pressure head, it is long-term tired
Work causes pressure head permanently to deviate former action direction under using, cause the detection validity of stability at high temperature of asphalt mixture lower,
So that finally deviateing design value, drop by the practical capacity that the bituminous pavement that asphalt is laid with resists track in high temperature season
The low service life of bituminous pavement.
Designing a kind of effectively quick and economical and practical asphalt mixture shearing experimental rig is current to need what is solved to ask
One of topic.
Utility model content
Technical problems based on background technology, the utility model proposes a kind of asphalt bilayer shearing tests
Device improves the shearing test precision of asphalt.
The utility model proposes a kind of asphalt bilayer shearing test device, for clamping bitumen mixture specimen
Carry out the double-deck shearing clamp of shearing test；The double-deck shearing clamp includes moveable centre panel and is respectively arranged at median surface
The two sides panel of plate opposite sides, centre panel form two for placing bitumen mixture specimen between the panel of two sides respectively
Cavity.
Further, centre panel with offer two circular grooves on the panel opposite face of two sides, two circular grooves are coaxial
Line is arranged, and offers another circular groove corresponding with circular groove on the panel of two sides.
Further, the first mounting hole is offered in centre panel, is offered on the panel of two sides opposite with the first mounting hole
The second mounting hole, guide rod pass through first mounting hole and second mounting hole.
Further, the double-deck shearing clamp further includes the bottom panel being fixed on mechanics machine and for guiding, bottom surface
Adjustable two sides panel is arranged in another opposite sides in plate top, and two sides panel is arranged in parallel with centre panel.
Further, two guiding mechanism respectively with rear panel, front panel by least one bolt it is affixed, rear panel
It is fixed on bottom panel by least one bolt, the front panel is fixed on bottom panel by least one bolt.
Further, the pressure head connection of side and mechanics machine of the centre panel far from bottom panel, centre panel and pressure
It is provided between head and stressed mechanics sensor is applied to centre panel for detecting pressure head, rear panel and front panel are far from bottom surface
The side of plate is respectively arranged with two displacement sensor brackets, is provided on two displacement sensor brackets for detecting centre panel fortune
Two displacement sensors of dynamic displacement.
Further, two sides panel includes Left-Hand Panel and the right panel opposite with Left-Hand Panel, and Left-Hand Panel is opposite
Two sides are provided with left side column, and left side column is affixed by least one bolt with Left-Hand Panel, and right panel opposite sides is set
Right side uprights are equipped with, right side uprights are affixed by least one bolt with right panel.
Further, the relative position of rear panel and front panel offers at least one circular hole respectively, and left side column passes through
Bolt pass through circular hole connect respectively with rear panel, front panel, right side uprights by bolt across circular hole respectively with rear panel, front
Plate connection.
Further, bitumen mixture specimen is round pie bitumen mixture specimen, and the cavity is relative to centre panel
Symmetrically, bitumen mixture specimen is placed in the cavity, and is arranged respectively with centre panel, two sides panel with central axis, drip
Green compound test specimen is glued with centre panel, two sides panel by epoxy gluing agent respectively.
A kind of the advantages of asphalt bilayer shearing test device provided by the utility model, is: the utility model knot
A kind of asphalt bilayer shearing test device provided in structure, double-shear fixture is by applying shearing to two symmetrical test specimens
Power improves the shearing test precision of asphalt so that offsetting traditional straight shear device shearing is generated horizontal force；
The setting of mechanics sensor, range sensor does not only reach the shearing that real-time monitoring pressure head applies bitumen mixture specimen
Power, and pressure head can be adjusted in real time according to the pressure parameter set in control system, realize cutting for asphalt
Cut performance test；Both side plate is adjusted by heel post, so that two sides panel and centre panel after bonding bitumen mixture specimen
In parallel；Displacement sensor bracket can adjust the placement location of displacement sensor, to improve displacement sensor to intermediate slab movement
Detection accuracy.
Detailed description of the invention
Fig. 1 is a kind of assembling structure schematic diagram of shearing test device used for asphalt mixture of the utility model；
Fig. 2 is a kind of decomposition texture schematic diagram of shearing test device used for asphalt mixture of the utility model；
Fig. 3 is before a kind of bitumen mixture specimen of asphalt bilayer shearing test device of the utility model loads
Schematic diagram；
Fig. 4 is after a kind of bitumen mixture specimen of asphalt bilayer shearing test device of the utility model loads
Schematic diagram；
Fig. 5 is that a kind of bitumen mixture specimen of asphalt bilayer shearing test device of the utility model installs knot
Structure schematic diagram；
Wherein, 1, displacement sensor bracket, 2, Left-Hand Panel, 3, centre panel, 4, bitumen mixture specimen, 6, back
Plate, 7, right side uprights, 8, bolt, 9, bottom panel, 10, right panel, 11, guiding mechanism, 12, left side column, 13, guide rod,
14, front panel.
Specific embodiment
In the following, the technical solution of the utility model is described in detail by specific embodiment.
Referring to figs. 1 to 4, the utility model proposes a kind of asphalt bilayer shearing test device, for clamping drip
Green compound test specimen 4 carries out the double-deck shearing clamp of shearing test；The double-deck shearing clamp includes moveable centre panel 3 and divides
It is not set to the two sides panel of 3 opposite sides of centre panel, centre panel 3 is formed between the panel of two sides for placing drip respectively
Two cavitys of green compound test specimen 4.
Centre panel 3 is driven by mechanics machine and is moved, by cutting to two symmetrical applications of bitumen mixture specimen 4
Shear force improves the shearing test of asphalt to be the normal force passively generated during offsetting traditional direct shearing test
Precision.
The double-deck shearing clamp further include the bottom panel 9 being fixed on mechanics machine and for guide centre panel 3 move
Two guiding mechanisms 11,9 top of bottom panel, one opposite sides be fixedly installed rear panel 6 and front panel 14,9 top of bottom panel it is another
Adjustable two sides panel is arranged in opposite sides, and two sides panel is arranged in parallel with centre panel 3.Two guiding mechanism 11 is distinguished
Affixed by least one bolt with rear panel 6, front panel 14, the two sides of centre panel 3 along its length are set to described two
In the guide rail that guiding mechanism 11 opens up, rear panel 6 is fixed on bottom panel 9 by least one bolt；The front panel 14 is logical
At least one bolt is crossed to be fixed on bottom panel 9, the length direction of centre panel 3 respectively with bottom panel 9, rear panel 6 is vertical sets
It sets.
Two guiding mechanisms 11 being fixed on bottom panel 9 and rear panel 6 are parallel with 3 short transverse of centre panel, median surface
The two sides of plate 3 in the vertical direction are placed in the guide rail that two guiding mechanisms 11 open up, and centre panel 3 and guide rail vertical direction are flat
Capable setting improves the verticality that centre panel 3 moves under mechanics machine load, and centre panel 3 is being moved through
It is avoided in journey because corresponding movement hinders caused by guide rail is not parallel, thus influence the shearing test of bitumen mixture specimen 4
Performance test.
Centre panel 3 is connected with the pressure head of mechanics machine, and the pressure head driving centre panel 3 of mechanics machine can be upper and lower
It is mobile, by applying to centre panel applied force or displacement, while to the bitumen mixture specimen for being bonded in centre panel two sides
Shear action.
The pressure head of side and mechanics machine of the centre panel 3 far from bottom panel 9 connects, between centre panel 3 and pressure head
It is provided with and stressed mechanics sensor is applied to centre panel 3 for detecting pressure head, rear panel 6 and front panel 14 are far from bottom panel
9 side is respectively arranged with two displacement sensor brackets 1, is provided on two displacement sensor brackets 1 for detecting centre panel 3
Two displacement sensors of moving displacement.
To guarantee two bitumen mixture specimens 4 and Left-Hand Panel 2, right panel 10 holding position in bonding and installation process
Set it is symmetrical, centre panel 3 with offer two circular grooves on the panel opposite face of two sides, two circular grooves are coaxially set, two
Another circular groove corresponding with circular groove is offered on side panel, bitumen mixture specimen 4 is symmetrically disposed on round recessed
In slot, it is not only convenient for being co-axially mounted for two bitumen mixture specimens 4, and under the clamping of two sides panel and centre panel 3, dripped
When green compound test specimen 4 is under the load of mechanics machine, the horizontal force of load is counteracted, is avoided traditional direct
Test specimen caused by shearing generates the phenomenon that offset of shear plane caused by the torque of rotation, improves the precision of shearing test.
Mechanics sensor real-time monitoring pressure head is transported to mechanics examination to the application pressure of centre panel 3, and by monitoring data
It tests in the control system of machine and is analyzed and processed, control system output pressure controls on signal to pressure head, and then does not only reach reality
When monitoring pressure head shearing force that bitumen mixture specimen 4 is applied, and can be joined according to the pressure set in control system
Several pairs of pressure heads are adjusted in real time.
Two displacement sensor brackets 1 are respectively arranged at 14 upper end of rear panel 6 and front panel, and displacement sensor bracket 1 can be adjusted
The placement location of whole displacement sensor, to improve the detection accuracy that displacement sensor is displaced centre panel 3, while two displacements pass
The real time kinematics of sensor real-time detection centre panel 3 are displaced, and then determine position of the bitumen mixture specimen 4 under certain shearing force
Shifting parameter, and then obtain shearing test of the bitumen mixture specimen 4 under certain temperature, certain shearing force.
Two sides panel includes Left-Hand Panel 2 and the right panel 10 opposite with Left-Hand Panel 2,2 opposite sides of Left-Hand Panel
It is provided with left side column 12, it is affixed that left side column 12 and Left-Hand Panel 2 pass through at least one bolt, 10 opposite sides of right panel
Right side uprights 7 are provided with, right side uprights 7 are affixed by least one bolt with right panel 10.Left-Hand Panel 2, right panel
10 position passes through left side column 12 respectively, the realization of right side uprights 7 adjusts by a small margin, to adjust bitumen mixture specimen 4 because of system
Test specimen two sides is not parallel caused by the error generated during making.
The relative position of rear panel 6 and front panel 14 offers at least one circular hole respectively, and left side column 12 passes through bolt
Connect respectively with rear panel 6, front panel across circular hole, right side uprights 7 by bolt pass through circular hole respectively with rear panel 6, front
Plate 14 connects.
Bitumen mixture specimen 4 is round pie bitumen mixture specimen, and the cavity is symmetrical relative to centre panel 3, drip
Green compound test specimen 4 is placed in the cavity, and is arranged respectively with centre panel 3, two sides panel with central axis, pitch mixing
Material test specimen 4 is glued with centre panel 3, two sides panel by epoxy gluing agent respectively.Two bitumen mixture specimens 4 are specifications
Identical test specimen.
The first mounting hole is offered in centre panel 3, and second peace opposite with the first mounting hole is offered on the panel of two sides
Hole is filled, guide rod 13 passes through first mounting hole and second mounting hole.
4 columns are used in the present embodiment, i.e. two right side uprights 7 and two left side columns 12, right side uprights 7 include the
One right side uprights and the second right side uprights being oppositely arranged with first right side uprights, left side column 12 include that the first left side is vertical
Column and and the second left side column for being oppositely arranged with first left side column, rear panel 6 is fixed on first by 3 bolts
On right side uprights, rear panel 6 is fixed on the first left side column by 3 bolts, and front panel 14 is fixed on by 3 bolts
On two right side uprights, front panel 14 is fixed on the second left side column by 3 bolts, and two guiding mechanism 11 is respectively and below
Plate 6, front panel 14 are affixed by four bolts, and two guiding mechanisms 11 are fixed on rear panel 6 and front by four bolts respectively
On plate 14.Circular groove is depth 1mm, and diameter 150mm, bitumen mixture specimen 4 is using diameter 150mm, the circle of height 100mm
Cylindricality test specimen.
As shown in figure 5, the installation process of two bitumen mixture specimens 4 are as follows:
Firstly, removing the displacement sensor bracket 1 of experimental rig, centre panel 3, Left-Hand Panel 2 and right panel 10.
Left-Hand Panel 2 is horizontally arranged, circular groove is upward；Ring is uniformly smeared first bitumen mixture specimen two sides
Oxygen resinoid bond is placed in the circular groove of Left-Hand Panel 2；It is inserted into the second mounting hole that Left-Hand Panel 2 is opened up
Four guide rods 13；Centre panel 3 is installed, four guide rods 13 is made to pass through first opened up of centre panel 3 in installation process
Mounting hole；Epoxy adhesive is uniformly smeared second bitumen mixture specimen two sides, is placed in the circle of centre panel 3
In groove；Right panel 10 is installed, the second installation for opening up four guide rods 13 by right panel 10
Hole；Standing removes guide rod 13 after epoxy adhesive is fully cured.
The bolt of left side column 12, right side uprights 7 can be individually fixed in by adjusting Left-Hand Panel 2, right panel 10
Length realizes that the bitumen mixture specimen 4 of different size carries out shearing test using the device, improves the applicable model of the device
It encloses.
Centre panel 3 is passed through guiding mechanism 11 to be connected with mechanics machine；Left-Hand Panel 2 and right panel 10 are installed
8 bolts, so that two sides panel is fixedly connected with left side column 12, right side uprights 7 by bolt 8 respectively, bolt is all disposed
It is successively tightened again after in screw hole；Centre panel 3 is connected with mechanical test compressing head；Displacement sensor bracket is installed.It is real
The installation of existing two bitumen mixture specimens 4.
In installation, the first mounting hole opened up in centre panel 3 is opened up on the panel of two sides corresponding with the first mounting hole
Second mounting hole is to be easy to implement pitch mixing for the ease of having corresponding guiding function when bitumen mixture specimen installation
Expect test specimen 4, centre panel 3, the heart coaxially to each other between the panel of two sides.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (9)
1. a kind of asphalt bilayer shearing test device, which is characterized in that carried out for clamping bitumen mixture specimen (4)
The double-deck shearing clamp of shearing test；
The double-deck shearing clamp includes moveable centre panel (3) and the two sides for being respectively arranged at centre panel (3) opposite sides
Panel, centre panel (3) form two cavitys for placing bitumen mixture specimen (4) between the panel of two sides respectively.
2. asphalt bilayer shearing test device according to claim 1, which is characterized in that centre panel (3) exists
With two circular grooves are offered on the panel opposite face of two sides, two circular grooves are coaxially set, offered on the panel of two sides with circle
The corresponding another circular groove of connected in star.
3. asphalt bilayer shearing test device according to claim 1, which is characterized in that in centre panel (3)
The first mounting hole is offered, second mounting hole opposite with the first mounting hole is offered on the panel of two sides, guide rod (13) passes through
First mounting hole and second mounting hole.
4. asphalt bilayer shearing test device according to claim 1, which is characterized in that the double-deck shearing clamp is also
Two guiding mechanisms (11) including the bottom panel (9) being fixed on mechanics machine and for guiding centre panel (3) to move, bottom
Rear panel (6) and front panel (14), another opposite sides in bottom panel (9) top is fixedly installed in one opposite sides of panel (9) top
Adjustable two sides panel is set, and two sides panel is arranged in parallel with centre panel (3).
5. asphalt bilayer shearing test device according to claim 4, which is characterized in that two guiding mechanism
(11) affixed by least one bolt with rear panel (6), front panel (14) respectively, rear panel (6) passes through at least one bolt
It is fixed on bottom panel (9), the front panel (14) is fixed on bottom panel (9) by least one bolt.
6. asphalt bilayer shearing test device according to claim 4, which is characterized in that centre panel (3) is remote
The pressure head of side and mechanics machine from bottom panel (9) connects, and is provided between centre panel (3) and pressure head for detecting pressure
Head applies the side of stressed mechanics sensor, rear panel (6) and front panel (14) far from bottom panel (9) to centre panel (3)
It is respectively arranged with two displacement sensor brackets (1), is provided on two displacement sensor brackets (1) for detecting centre panel (3)
Two displacement sensors of moving displacement.
7. -6 any asphalt bilayer shearing test device according to claim 1, which is characterized in that two sides panel
Including Left-Hand Panel (2) and the right panel (10) opposite with Left-Hand Panel (2), Left-Hand Panel (2) opposite sides is provided with a left side
Heel post (12), left side column (12) and Left-Hand Panel (2) are affixed by least one bolt, right panel (10) opposite sides
It is provided with right side uprights (7), right side uprights (7) are affixed by least one bolt with right panel (10).
8. -6 any asphalt bilayer shearing test device according to claim 1, which is characterized in that rear panel
(6) and the relative position of front panel (14) offers at least one circular hole respectively, and left side column (12) passes through circular hole by bolt
Connect respectively with rear panel (6), front panel (14), right side uprights (7) by bolt pass through circular hole respectively with rear panel (6), preceding
Panel (14) section connection.
9. -6 any asphalt bilayer shearing test device according to claim 1, which is characterized in that pitch mixing
Expect test specimen (4) be round pie bitumen mixture specimen, the cavity relative to centre panel (3) symmetrically, bitumen mixture specimen
(4) it is placed in the cavity, and is arranged respectively with centre panel (3), two sides panel with central axis, bitumen mixture specimen
(4) it is glued respectively with centre panel (3), two sides panel by epoxy gluing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822053058.9U CN209327137U (en) | 2018-12-07 | 2018-12-07 | A kind of asphalt bilayer shearing test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822053058.9U CN209327137U (en) | 2018-12-07 | 2018-12-07 | A kind of asphalt bilayer shearing test device |
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| Publication Number | Publication Date |
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| CN209327137U true CN209327137U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822053058.9U Active CN209327137U (en) | 2018-12-07 | 2018-12-07 | A kind of asphalt bilayer shearing test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490102A (en) * | 2018-12-07 | 2019-03-19 | 中铁四局集团有限公司 | A kind of asphalt bilayer shearing test device |
-
2018
- 2018-12-07 CN CN201822053058.9U patent/CN209327137U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490102A (en) * | 2018-12-07 | 2019-03-19 | 中铁四局集团有限公司 | A kind of asphalt bilayer shearing test device |
| CN109490102B (en) * | 2018-12-07 | 2024-05-28 | 中铁四局集团有限公司 | Double-deck shear test device of bituminous mixture |
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