CN105954113B - A kind of asphalt circuit wheel tracking test device and test method - Google Patents
A kind of asphalt circuit wheel tracking test device and test method Download PDFInfo
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- CN105954113B CN105954113B CN201610263827.0A CN201610263827A CN105954113B CN 105954113 B CN105954113 B CN 105954113B CN 201610263827 A CN201610263827 A CN 201610263827A CN 105954113 B CN105954113 B CN 105954113B
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/16—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces applied through gearing
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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
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
Abstract
The present invention relates to a kind of asphalt circuit wheel tracking test device and test methods, the device includes workbench and temperature control box, Power Component and controller are additionally provided on workbench, controller is connect with computer, the bottom of temperature control box is provided with ring-shaped guide rail, the placement platform with Power Component by transmission axis connection is provided in temperature control box, it is driven by Power Component by transmission shaft and places platform low-speed running, accelerating pulley group is installed in the bottom for placing platform, annular die trial is arranged in top, lifting support is provided with above annular die trial, pressure head or wheel load are connected with by load fixed link in the middle part of the crossbeam of lifting support, the present invention may be implemented different types of structure specimen molding and make molding and wheel tracking test function integration, the circular motion that test specimen makees single direction drives vehicle wheel rotation, to guarantee that wheel exists Unidirectional circuit is formed on test specimen, more meets the actual forced status of road driving, and wheel tracking test result is more true and reliable.
Description
Technical field
The invention belongs to performance of asphalt mixture studying technological domain, in particular to a kind of asphalt circuit track examination
Experiment device and test method.
Background technique
The service performance of fast development with highway in China, bituminous pavement is increasingly taken seriously, and track is not
The service life that reduced by only road surface, also drastically influences travel safety, and track becomes the Major Diseases of bituminous pavement, track
The permanent deformation of asphalt when occurring mainly with high temperature, wheel tracking test are the simple easy of evaluation asphalt high temperature deformation
Row method.
What wheel tracking test method was initially developed by Britain TRRL, since test method itself is fairly simple, test result is straight
It sees and very good with the track correlation of practical bituminous pavement, therefore is widely used.Wheel tracking test is that a kind of simulation is real
The engineering test method of track is walked on road surface and formed to border wheel load: in broad terms including indoor reciprocal track examination
It tests, rotates wheel tracking test, large-scale circular track test, linear track test, field condition accelerating and loading test etc. can be assumed that it is to belong to vehicle
The scope of rut test, it is exactly to tie by using wheel in plate-like test specimen or road surface that these, which test most basic and common principle,
It walks repeatedly on structure, observes and detect test block or the response of pavement structure, test knot is characterized with dynamic stability or rutting depth
Fruit.Wheel tracking test is the method evaluated asphalt and revolt plastic flow deformation ability under the conditions of predetermined temperature, passes through plate
Reciprocal relative movement between blocky test specimen and wheel makes test block generate densification under the Repeated Loading of wheel, shear, push away
It moves and flows, to generate track.Wheel tracking test is a kind of engineering test method, and test result can be used for establishing empirical equation
Guess asphalt pavement rut depth, or the rutting resistance for detecting asphalt.The maximum feature of wheel tracking test is
The actual conditions that wheels travel on bituminous pavement can sufficiently be simulated can also change temperature, lotus when being used for experimental study
Load, specimen thickness, size, condition of molding etc. analyze various factors variation to rutting deformation with the actual conditions of simulated roadway
It influences, if test specimen is in a water bath, can also to study the various destruction situations under the conditions of water.
Method currently used for testing asphalt mixture in track test is primarily present many shortcomings, conventional wheel tracking test
Time is generally too short, and rut test piece thickness is too thin, and size is less than normal, cannot the actual stress of simulated roadway well, be used for
Evaluation Bitumen Mixture Permanent Deformation performance has certain limitation.For this purpose, the present invention devises a kind of novel pitch mixing
Expect circuit wheel tracking test device, propose new test method on this basis, can more preferable simulation bituminous pavement reality
Stress.
Summary of the invention
In order to solve the deficiency in the presence of the above-mentioned prior art, the present invention provides a kind of single directions that can be realized
Circular motion and the pitch mixing that the rotation of drive wheel load can be rotated by test specimen, be capable of more real simulation road surface actual forced status
Expect circuit wheel tracking test device.
The present invention also provides a kind of asphalt rings realized with above-mentioned asphalt circuit wheel tracking test device
Road wheel tracking test method.
Used technical solution is the present invention to achieve the goals above:
The device includes workbench and the temperature control box that is mounted on workbench, and power is additionally provided on workbench
Component and the controller being electrically connected with Power Component, controller are connect with computer, and the bottom of temperature control box is provided with annular and leads
Rail, is provided with the placement platform with Power Component by transmission axis connection in temperature control box, passes through transmission shaft band by Power Component
It is dynamic to place platform low-speed running, it is equipped with to move and can drive along ring-shaped guide rail in the bottom for placing platform and places platform height
The accelerating pulley group of speed operating is provided with plastic test specimen on placing platform or places the annular die trial of test specimen, in annular die trial
Top is provided with lifting support, and lifting support is connect with Power Component by transmission component and passes through transmission component by Power Component
Transmitting power drives the crossbeam of lifting support to move up and down, and is connected with pressure by load fixed link in the middle part of the crossbeam of lifting support
Head or wheel load；
The pressure sensor and displacement sensor connecting with computer are additionally provided on the crossbeam of lifting support.
Above-mentioned Power Component by transmission shaft drive place platform operating speed be 60km/h hereinafter, Power Component and plus
It is 60~100km/h that fast wheel group starts the speed for driving placement platform to operate simultaneously.
Above-mentioned annular die trial is disassembled composite structure, can be and is made of 1~4 layer unit die trial stacking.
The structure of rut test piece is either distributed with the annular consistent ring specimen of die trial structure in above-mentioned annular die trial
In annular die trial and by the molding segmentation fan ring specimen of identical material or it is distributed across in annular die trial and by different materials
Expect molding segmentation fan ring specimen, can both form the test specimen of different structure.
A kind of rut test piece forming method realized with above-mentioned asphalt circuit wheel tracking test device is by following step
Rapid composition:
(1) roller is mounted in load fixed link to and is arranged the rolling pressure of roller, opens temperature control box, setting test specimen is ground
Molded temperature preheats roller；
(2) after temperature control box is preheated to set temperature, mix mixture, paves in annular die trial, pave end respectively
Afterwards, the beam height for adjusting lifting support makes roller slowly drop to the surface for touching mixture, passes through pressure sensor reality
When acquire signal, until the load that roller acts on mix surface, which reaches, stops decline after preset rolling pressure；
(3) Power Component drives annular die trial to circle by transmission shaft, so that roller be made to roll from circumferencial direction
The contact pressure of mixture, roller and mix surface is in dynamic balance state, until mixture reaches scheduled compactness,
Stopping rolls, and roller lifting, annular die trial stops operating, and completes the rut test piece molding of single layer structure.
Further include step (4) after above-mentioned steps (3), smears adhesion coating pitch, weight in the molding surface of test piece of step (3) institute
Multiple step (2) and step (3), complete the molding of the test specimen second layer and third layer structure, complete the rut test piece of composite structure
Molding.
Above-mentioned steps (2) may is that after temperature control box is preheated to set temperature, the different mixture of mix, segmentation paves
In annular die trial, after paving, the beam height for adjusting lifting support drops to roller slowly to touch mixture
Surface acquires signal by pressure sensor in real time, until the load that roller acts on mix surface reaches preset stone roller
Stop decline after pressure pressure, to form the segmentation test specimen of different mixtures.
It may also is that after temperature control box is preheated to set temperature, mix mixture, segmentation paves in ring above-mentioned steps (2)
In shape die trial, after paving, the beam height for adjusting lifting support makes roller slowly drop to the surface for touching mixture,
Signal is acquired in real time by pressure sensor, until the load that roller acts on mix surface reaches preset rolling pressure
Stop decline afterwards, the segmentation test specimen of identical mixture can also be formed.
A kind of asphalt circuit wheel tracking test side realized with above-mentioned asphalt circuit wheel tracking test device
Method comprises the steps of:
(1) wheel is mounted in load fixed link, and be arranged wheel to the rolling pressure of rut test piece, place platform
Velocity of rotation, the test temperature of temperature control box lay sensor according to the structure of rut test piece in annular die trial, determine that data acquire
Section；
(2) starting temperature control box is warming up to set temperature, and 6~20h of heat preservation starts to test, and the crossbeam for adjusting lifting support is high
Degree, pressure sensor acquire the load information of rut test piece in real time, control wheel to the rolling pressure of rut test piece, until pressure
Sensor pressure collected reaches the rolling pressure of setting, keeps wheel height；
(3) according to test needs, placement platform is driven to make low speed circular motion or lead to by transmission shaft by Power Component
It crosses Power Component and accelerating pulley group while starting drive placement platform and make high speed circular motion, so that wheel be made to grind from circumferencial direction
Rut test piece is pressed, keeps the contact pressure on wheel and rut test piece surface to be in dynamic balance state, is opened after starting precompressed 2min
Beginning wheel tracking test acquires corresponding section track examination by the pressure sensor and displacement sensor that are arranged between data collection zone in real time
The stress and strain information of part is simultaneously sent to computer；
(4) computer receives pressure sensor and displacement sensor acquires the stress of corresponding section rut test piece in real time and answers
Become information, and it is further processed, for the rut test piece of same pavement structure, maximum track measures each data collection zone
Between average value, and be averaged as performance rating standard；For the test specimen of different pavement, under same experimental condition
Respective maximum track amount is evaluation criteria.
The structure of the rut test piece described in step (1) is either distributed with the annular consistent ring specimen of die trial structure
In annular die trial and by the molding segmentation fan ring specimen of identical material or it is distributed across in annular die trial and by different materials
Expect molding segmentation fan ring specimen.
Compared with prior art, advantages of the present invention is as follows:
(1) the device of the invention realizes the function integration of different types of structure specimen molding and wheel tracking test, removes this
Except the tests such as uniaxial penetration or simulated roadway structure can also be realized by the pressure head or wheel load exchanged in load fixed link
In-situ test, and structure is simple, it is easy to operate.
(2) present invention drives its rotation when placing platform rotation by being mounted on the annular die trial placed on platform, makees
The circular motion of single direction, test specimen rotation is to drive vehicle wheel rotation, so that it is unidirectional to guarantee that wheel is formed on test specimen
Circuit, more meets the actual forced status of road driving, and wheel tracking test result is more true and reliable.
(3) rut test piece of the invention is meeting on the molding basis of the same pavement structure of simple single layer, multilayer, real
Test specimen sectional is showed while having formed the pavement structure of different structure Yu different materials type combination, i.e., a ring specimen is by several
A continuous different pavement collectively constitutes, and for examining the performance of various pavement structures under identical conditions, improves test
Efficiency.
(4) present invention provides two dynamical systems to platform is placed using Power Component and accelerating pulley group, so as to adjust
The running speed of whole test specimen, the speed of analog road vehicle traveling.
Detailed description of the invention
Fig. 1 is the experimental rig structural schematic diagram of embodiment 1.
Fig. 2 is the structural schematic diagram of annular die trial 5 in Fig. 1.
Specific embodiment
Technical solution of the present invention is further described now in conjunction with drawings and examples.
Embodiment 1
As shown in Figure 1, the asphalt circuit wheel tracking test device of the present embodiment is by workbench 1, Power Component
2, temperature control box 3, place platform 4, annular die trial 5, lifting support 6, pressure sensor 7, displacement sensor 8, load fixed link 9,
Wheel load 10, transmission shaft 11, accelerating pulley group 12, controller 14 and the combination of ring-shaped guide rail 13 are constituted.
The workbench 1 of the present embodiment is to provide installation environment for whole device, is installed inside workbench 1 dynamic
Component 2, and the control for controlling that each sensor carries out data acquisition and Power Component 2 works is installed on workbench 1
Device 14, Power Component 2 include lifting motor and rotary electric machine and the chain drive machine for being mounted on lifting motor power output end
Structure, the power output end of rotary electric machine are connected with transmission shaft 11, are outputed power by transmission shaft 11.Involved in the present embodiment
Lifting motor and rotary electric machine pass through conducting wire respectively and connect with controller 14, control it by controller 14 and respectively work, can adopt
With commercially available servo motor, chain transminssion mechanism used also belongs to common transmission mechanism, by the power output of lifting motor.This implementation
The controller 14 of example is commercially available programmable controller 14, and display screen, real-time display can also be installed on workbench 1
The data and each component working condition of each sensor acquisition.Temperature control box 3 is installed above workbench 1, the present embodiment
Temperature control box 3 belongs to common temperature control box 3, ring-shaped guide rail 13 is fixedly installed with threaded fastener in the bottom of temperature control box 3, in temperature control
Platform 4 is placed by being equipped with annular in the top of 3 annular guide rail 13 of case, places platform 4 and passes through transmission shaft 11 and rotary electric machine
Output axis connection, and by rotary electric machine by transmission shaft 11 driving place platform 4 slowly run, meet revolving speed in 60km/h
The rotation of power demand below, as placement platform 4 provides the first power, bottom and ring-shaped guide rail in the placement platform 4
The position of 13 faces is equipped with can be along the accelerating pulley group 12 of 13 high-speed cruising of ring-shaped guide rail, the accelerating pulley group 12 of the present embodiment
It is made of the accelerating pulley 12 in multiple self-powered sources, i.e. the output axis connection of the shaft of accelerating pulley and speed regulating motor, by adjusting the speed
Motor drives accelerating pulley high-speed rotation, starts simultaneously with Power Component 2, can meet revolving speed in the power demand of 100km/h, simultaneously
Also the second power is provided to place the rotation of platform 4 and reach the target of the support placement balance of platform 4,.On placing platform 4
Annular die trial 5 is installed, which is disassembled composite structure, and the present embodiment is by 3 unit die trial stacking groups
At being provided with lifting support 6 in the top of annular die trial 5, which can use portal support, and one branch be fixed on
The interior circle center of annular die trial 5 makes its crossbeam across above annular die trial 5, and the bottom of the lifting support 6 passes through chain drive
The power output axis connection of mechanism and lifting motor drives the crossbeam of lifting support 6 to move up and down by lifting motor.It is going up and down
A load fixed link 9 normal thereto is fixed in the middle part of the crossbeam of bracket 6, the bottom end of the load fixed link 9 is solid by pin shaft
Surely there is wheel load 10, which can be roller or wheel, both can also be carried out wheel tracking test test with shaping test piece, and risen
It is also embedded with pressure sensor 7 and displacement sensor 8 on the crossbeam of descending branch frame 6, is respectively used to the stress and strain of detection test specimen
Situation, the pressure sensor 7 and displacement sensor 8 are connect by data line with computer respectively.
Rut test piece is first formed with above-mentioned asphalt circuit wheel tracking test device, recycles the device real later
Existing asphalt circuit wheel tracking test method, specific as follows:
The method of molding rut test piece comprises the steps of:
(1) roller is mounted in load fixed link 9 to and is arranged the rolling pressure of roller, temperature control box 3 is opened, according to pitch
Type and performance be arranged test specimen roller-compaction temperature, preheat roller；
(2) after temperature control box 3 be preheated to setting roll temperature after, the different mixture of mix respectively, segmentation, which is divided equally, to pave
In annular die trial 5, fan annular paves, and after paving, the beam height of adjustment lifting support 6 makes it slowly drop to roller
The surface for touching mixture acquires signal by pressure sensor 7, until roller acts on the load of each mix surface in real time
Stop decline after reaching preset rolling pressure；
(3) Power Component 2 drives annular die trial 5 to circle by transmission shaft 11, to make roller from circumferencial direction
Mixture is rolled, roller and the contact pressure of each mix surface are in dynamic balance state, until each mixture reaches predetermined
Compactness, stop rolling, roller lifting, annular die trial 5 stops operating, and completes the first layer composite structure molding of each test specimen；
(4) adhesion coating pitch is smeared in the molding each surface of test piece of first layer composite structure, repeats step (2) and step (3),
The molding for completing the test specimen second layer and third layer structure, completes the rut test piece of the composite structure of the fan ring structure of each segmentation
Molding, referring to fig. 2.
Realize that asphalt circuit wheel tracking test method comprises the steps of:
(1) wheel is changed the outfit in load fixed link 9, and rolling pressure, placement platform 4 of the wheel to rut test piece is set
Velocity of rotation, the test temperature of temperature control box 3 determines according to the structural segmented laying sensor of rut test piece in annular die trial 5
Between different data collection zones；
(2) starting temperature control box 3 is warming up to set temperature, starts to test after keeping the temperature 12h, and the crossbeam for adjusting lifting support 6 is high
Degree, pressure sensor 7 acquire the load information of each segmentation rut test piece in real time, control wheel to the rolling pressure of rut test piece,
Until the pressure collected of pressure sensor 7 reaches the rolling pressure of setting, wheel height is kept；
(3) according to test needs, by Power Component 2 by transmission shaft 11 drive place platform 4 make low speed circular motion or
Person starts drive placement platform 4 by Power Component 2 and accelerating pulley group 12 simultaneously and makees high speed circular motion, to make wheel from circle
Circumferential direction rolls rut test piece, keeps the contact pressure on wheel and rut test piece surface to be in dynamic balance state, starts precompressed
Start wheel tracking test after 2min, the pressure sensor 7 being arranged between the data collection zone on annular rut test piece is fanned by each segmentation
The stress and strain information of section rut test piece corresponding with the acquisition in real time of displacement sensor 8 is simultaneously sent to computer；
(4) computer receive pressure sensor 7 and displacement sensor 8 acquire in real time corresponding section rut test piece stress and
Strain information, and it is further processed, the rut test piece of different pavement is selected, is marked using maximum track amount as evaluation
Standard can be used for studying the performance superiority and inferiority of different pavement under same experimental condition.
Embodiment 2
The asphalt circuit wheel tracking test device of the present embodiment is same as Example 1, and annular die trial 5 therein is single
The unit die trial of layer, for realizing single layer specimen molding.
Rut test piece is first formed with asphalt circuit wheel tracking test device, the device is recycled to realize pitch later
Mixture circuit wheel tracking test method, specific as follows:
The method of molding rut test piece comprises the steps of:
(1) roller is mounted in load fixed link 9 to and is arranged the rolling pressure of roller, temperature control box 3 is opened, according to pitch
Type and performance be arranged test specimen roller-compaction temperature, preheat roller；
(2) after temperature control box 3 be preheated to setting roll temperature after, mix mixture uniformly paves in annular die trial 5,
After paving, the beam height of adjustment lifting support 6 makes roller slowly drop to cylinder contact to the surface of mixture, passes through
Pressure sensor 7 acquires signal in real time, until after the load that roller acts on mix surface reaches preset rolling pressure
Stop decline；
(3) Power Component 2 drives annular die trial 5 to circle by transmission shaft 11, to make roller from circumferencial direction
Roll mixture, the contact pressure of roller and mix surface is in dynamic balance state, until mixture reaches scheduled pressure
Solidity stops rolling, and roller lifting, annular die trial 5 stops operating, and completes the annular track specimen molding of single layer structure.
Realize that asphalt circuit wheel tracking test method comprises the steps of:
(1) wheel is changed the outfit in load fixed link 9, and rolling pressure, placement platform 4 of the wheel to rut test piece is set
Velocity of rotation, the test temperature of temperature control box 3, pressure sensor 7 and position are laid according to the structure of rut test piece in annular die trial 5
Displacement sensor 8 determines between data collection zone；
(2) starting temperature control box 3 is warming up to set temperature, starts to test after keeping the temperature 6h, and the crossbeam for adjusting lifting support 6 is high
Degree, pressure sensor 7 acquire the load information of rut test piece in real time, control wheel to the rolling pressure of rut test piece, until pressure
The pressure collected of force snesor 7 reaches the rolling pressure of setting, keeps wheel height；
(3) according to test needs, by Power Component 2 by transmission shaft 11 drive place platform 4 make low speed circular motion or
Person, which starts Power Component and accelerating pulley group 12 simultaneously and drives, to be placed platform 4 and makees high speed circular motion, running speed can 60~
It is adjusted between 100km/h, so that wheel be made to roll rut test piece from circumferencial direction, keeps the contact of wheel and rut test piece surface
Pressure is in dynamic balance state, starts wheel tracking test after starting precompressed 2min, the pressure sensing being arranged by data collection zone
Device 7 and displacement sensor 8 acquire the stress and strain information of corresponding section rut test piece in real time and are sent to computer；
(4) computer receives the stress and strain letter that pressure sensor 7 and displacement sensor 8 acquire rut test piece in real time
Breath, and it is further processed, using maximum track amount as evaluation criteria.
Embodiment 3
The asphalt circuit wheel tracking test device of the present embodiment is same as Example 1, and annular die trial 5 is by 4 layers
Unit die trial stacking composition, may be implemented the molding of multiple layer combination structural test piece.
Rut test piece is first formed with asphalt circuit wheel tracking test device, the device is recycled to realize pitch later
Mixture circuit wheel tracking test method, specific as follows:
The method of molding rut test piece comprises the steps of:
(1) roller is mounted in load fixed link 9 to and is arranged the rolling pressure of roller, temperature control box 3 is opened, according to pitch
Type and performance be arranged test specimen roller-compaction temperature, preheat roller；
(2) after temperature control box 3 be preheated to setting roll temperature after, mix mixture, segmentation divide equally paves in annular die trial 5
Interior, fan annular paves, and after paving, the beam height of adjustment lifting support 6 makes it slowly drop to cylinder contact to mixing
The surface of material acquires signal by pressure sensor 7 in real time, until roller, which acts on to close, expects that the load on surface reaches preset
Stop decline after rolling pressure；
(3) Power Component 2 drives annular die trial 5 to circle by transmission shaft 11, to make roller from circumferencial direction
Mixture is rolled, roller and the contact pressure of each mix surface are in dynamic balance state, until each mixture reaches predetermined
Compactness, stop rolling, roller lifting, annular die trial 5 stops operating, and completes the first layer composite structure molding of each test specimen；
(4) adhesion coating pitch is smeared in the molding each surface of test piece of first layer composite structure, repeats step (2) and step (3),
The molding for completing the test specimen second layer and third layer structure, completes the rut test piece of the composite structure of the fan ring structure of each segmentation
Molding.
Realize that asphalt circuit wheel tracking test method comprises the steps of:
(1) wheel is changed the outfit in load fixed link 9, and rolling pressure, placement platform 4 of the wheel to rut test piece is set
Velocity of rotation, the test temperature of temperature control box 3 determines according to the structural segmented laying sensor of rut test piece in annular die trial 5
Between different data collection zones；
(2) starting temperature control box 3 is warming up to set temperature, starts to test after keeping the temperature 10h, and the crossbeam for adjusting lifting support 6 is high
Degree, pressure sensor 7 acquire the load information of each segmentation rut test piece in real time, control wheel to the rolling pressure of rut test piece,
Until the pressure collected of pressure sensor 7 reaches the rolling pressure of setting, wheel height is kept；
(3) according to test needs, by Power Component 2 by transmission shaft 11 drive place platform 4 make low speed circular motion or
Person drives placement platform 4 to make high speed circular motion by accelerating pulley group 12, so that wheel be made to roll rut test piece from circumferencial direction, protects
The contact pressure for holding wheel and rut test piece surface is in dynamic balance state, starts wheel tracking test after starting precompressed 2min, leads to
The pressure sensor 7 and displacement sensor 8 being arranged between the data collection zone crossed on each annular rut test piece of segmentation fan acquire in real time
The stress and strain information of corresponding section rut test piece is simultaneously sent to computer；
(4) computer receive pressure sensor 7 and displacement sensor 8 acquire in real time corresponding section rut test piece stress and
Strain information, and it is further processed, for the rut test piece of same pavement structure, maximum track measures each data acquisition
The average value in section, and be averaged as performance rating standard.
In 1~3 asphalt circuit wheel tracking test device of above-described embodiment, the fixed wheel load in load fixed link 9
10 can also change pressure head into, the in-situ test of the tests such as uniaxial penetration or simulated roadway structure be realized, for unspecified
Connection type belongs to common technology means, in addition, lifting motor and lifting support, mobile motor and placement in above-described embodiment
Power transmission between platform belongs to routine techniques, can also use angular wheel group or the side such as belt transmission or roller screw
Formula is replaced.
The material property that the structure of above-mentioned rut test piece can according to need evaluation is adjusted, and for placing platform
The speed of 4 rotations can also need to be adjusted according to test.
Claims (2)
1. a kind of test method for realizing asphalt circuit track using asphalt circuit wheel tracking test device, the ring
Road wheel tracking test device are as follows: the temperature control box (3) that is arranged on workbench (1), Power Component (2) and with Power Component (2) electricity
The controller (14) of connection, controller (14) are connect with computer, and the bottom of temperature control box (3) is provided with ring-shaped guide rail (13),
The placement platform (4) that the useful transmission shaft (11) of setting connect with Power Component (2) in temperature control box (3), places the bottom of platform (4)
It is provided with accelerating pulley group (12), annular die trial (5), is provided with lifting support (6) above annular die trial (5), lifting support (6)
In the middle part of crossbeam by load fixed link (9) be connected with pressure head or wheel load (10, be provided with and calculate on the crossbeam of lifting support (6)
The pressure sensor (7) and displacement sensor (8) of machine connection；
It is characterized in that the test method of asphalt circuit track comprises the steps of:
(1) rut test piece forms
1) roller is mounted on load fixed link (9) to and is arranged the rolling pressure of roller, is opened temperature control box (3), test specimen is set
Roller-compaction temperature preheats roller；
2) after temperature control box (3) is preheated to set temperature, mix mixture, paves in annular die trial (5), pave end respectively
Afterwards, the beam height for adjusting lifting support (6) makes roller slowly drop to the surface for touching mixture, passes through pressure sensor
(7) signal is acquired in real time, until the load that roller acts on mix surface stops decline after reaching preset rolling pressure；
3) Power Component (2) drives annular die trial (5) to circle by transmission shaft (11), rolls roller from circumferencial direction
The contact pressure of mixture, roller and mix surface is in dynamic balance state, until mixture reaches scheduled compactness,
Stopping rolls, and roller lifting, annular die trial (5) stops operating, and completes the rut test piece molding of single layer structure；
4) in institute, molding surface of test piece smears adhesion coating pitch, repeats step 2) and step 3), completes the test specimen second layer and third
The molding of layer structure, is prepared into the rut test piece of composite structure；
(2) wheel is mounted on load fixed link (9), and be arranged wheel to the rolling pressure of rut test piece, place platform (4)
Velocity of rotation, the test temperature of temperature control box (3), according in annular die trial (5) rut test piece structure lay pressure sensor
(7) and displacement sensor (8) it, determines between data collection zone；
(3) starting temperature control box (3) is warming up to set temperature, and 6~20h of heat preservation starts to test, and the crossbeam for adjusting lifting support (6) is high
Degree, pressure sensor (7) acquire the load information of rut test piece in real time, control wheel to the rolling pressure of rut test piece, until
Pressure sensor (7) pressure collected reaches the rolling pressure of setting, keeps wheel height；
(4) according to test needs, placement platform (4) is driven to make low speed circular motion by transmission shaft (11) by Power Component (2)
Or drive placement platform (4) is started by Power Component (2) and accelerating pulley group (12) simultaneously and makees high speed circular motion, to make
Wheel rolls rut test piece from circumferencial direction, and the contact pressure on wheel and rut test piece surface is kept to be in dynamic balance state,
Start wheel tracking test after starting precompressed 2min, passes through the pressure sensor (7) and displacement sensor (8) being arranged between data collection zone
The stress and strain information of corresponding section rut test piece is acquired in real time and is sent to computer；
(5) computer receive the stress of the corresponding section rut test piece of pressure sensor (7) and displacement sensor (8) acquisition in real time with
Strain information, and it is further processed, for the rut test piece of same pavement structure, maximum track measures each data acquisition
The average value in section, and be averaged as performance rating standard；For the test specimen of different pavement, with same experimental condition
Under respective maximum track amount be evaluation criteria.
2. asphalt circuit wheel tracking test method according to claim 1, it is characterised in that: the institute in step (2)
The structure for stating rut test piece is and the consistent ring specimen of annular die trial (5) structure or is distributed across in annular die trial (5) simultaneously
By the molding segmentation fan ring specimen of identical material or it is distributed across in annular die trial (5) and by the molding segmentation of different materials
Fan ring specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263827.0A CN105954113B (en) | 2016-04-26 | 2016-04-26 | A kind of asphalt circuit wheel tracking test device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263827.0A CN105954113B (en) | 2016-04-26 | 2016-04-26 | A kind of asphalt circuit wheel tracking test device and test method |
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| CN106771103B (en) * | 2016-11-09 | 2019-03-15 | 长安大学 | Measuring Device in a kind of orientation continous way room |
| CN107063902B (en) * | 2017-04-08 | 2019-12-13 | 温州信达交通工程试验检测有限公司 | rut test device and rut test method based on same |
| CN107044943B (en) * | 2017-05-20 | 2020-08-11 | 浙江交科工程检测有限公司 | Contrast type automatic rut tester |
| CN108693052A (en) * | 2018-04-10 | 2018-10-23 | 张中华 | The device and test method of asphalt water permeability under a kind of evaluation cyclic load |
| CN108508190A (en) * | 2018-04-18 | 2018-09-07 | 长沙理工大学 | A kind of vehicle tracking test instrument under simulation braking state |
| CN109060381B (en) * | 2018-08-28 | 2024-04-02 | 山东高速集团有限公司 | Rut testing device and rut testing method for single-point type large-scale pavement acceleration loading system |
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| CN110044748A (en) * | 2019-04-11 | 2019-07-23 | 吉林大学 | It is a kind of for simulating the experimental rig and its test method of asphalt pavement rut forming process |
| CN110501244B (en) * | 2019-08-28 | 2022-03-15 | 中国港湾工程有限责任公司 | Asphalt mixture rut test device |
| US11320341B2 (en) * | 2019-10-11 | 2022-05-03 | Independent Test Services | Spindle support arrangement used in biaxial testing for measuring forces acting on a wheel and tire assembly |
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| CN114002261B (en) * | 2021-11-29 | 2024-02-20 | 广西交科集团有限公司 | Asphalt mixture line shrinkage coefficient measuring device and using method thereof |
| CN114383960B (en) * | 2022-01-20 | 2024-01-02 | 广西北投交通养护科技集团有限公司 | Asphalt mixture rut resistance test device and application method thereof |
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| US5641901A (en) * | 1995-11-06 | 1997-06-24 | Powell; Raymond | Asphalt concrete sample rutting machine |
| CN1154840C (en) * | 2002-01-24 | 2004-06-23 | 刘廷国 | Vertical loading wheel tester for asphlat pavement |
| CN2788174Y (en) * | 2005-04-11 | 2006-06-14 | 长安大学 | Pitch mixed material accelerating and loading tester |
| CN100543444C (en) * | 2005-12-26 | 2009-09-23 | 长安大学 | Indoor rotary wheel rutting test machine for asphalt mixture |
| CN101281190B (en) * | 2008-04-25 | 2011-11-23 | 长安大学 | Multifunctional wheel rutting test |
| CN101736680B (en) * | 2010-02-08 | 2011-04-20 | 长安大学 | Continuous type multifunctional track tester |
| RU2554289C2 (en) * | 2013-09-04 | 2015-06-27 | Открытое акционерное общество Башкирское Специальное Конструкторское Бюро "Нефтехимавтоматика" (ОАО БСКБ "Нефтехимавтоматика") | Machine determining rutting of asphalt-concrete pavements by rolling of loaded wheel (versions) |
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