CN107655778A - A kind of programmable water-stable gravel two-phase rolls scouring instrument - Google Patents
A kind of programmable water-stable gravel two-phase rolls scouring instrument Download PDFInfo
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- CN107655778A CN107655778A CN201711148872.2A CN201711148872A CN107655778A CN 107655778 A CN107655778 A CN 107655778A CN 201711148872 A CN201711148872 A CN 201711148872A CN 107655778 A CN107655778 A CN 107655778A
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- 238000009991 scouring Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000005096 rolling process Methods 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000002474 experimental method Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000003204 osmotic effect Effects 0.000 abstract description 5
- 238000004088 simulation Methods 0.000 abstract description 4
- 238000005191 phase separation Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 35
- 238000011156 evaluation Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- Life Sciences & Earth Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Pathology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of programmable water-stable gravel two-phase provided by the invention rolls scouring instrument, including water-stable gravel washes away control water tank, and water-stable gravel, which washes away control water tank and is connected with two-phase and rolls, washes away room；Wash away control water tank by water-stable gravel and rolled to two-phase and offer liquid in room is provided so that experimental simulation complies fully with actual road Scouring Condition so that the structure of experiment is washed away closer to actual road；The present apparatus has considered the factors such as load, the phase separation of solid-liquid two, temperature, osmotic pressure, corrosion function, and device is more comprehensive, scientifical than ever.
Description
Technical field
The invention belongs to road engineering material technical field of performance test, is related to a kind of programmable water-stable gravel two-phase
Roll scouring instrument.
Background technology
Water-stable gravel has higher intensity, rigidity and bearing capacity, good anti-fatigue performance, is that China is current
A kind of the most widely used pavement structure.But as road comes into operation, usually occur due to water-stable gravel road surface
Scour resistance is insufficient and triggers the diseases such as road surface early-age crack, plat-bottom escape, and then has influence on the use function of road, significantly
The service level and service life on road surface are reduced, adds road surface overall life cycle cost.Therefore, it is a kind of effectively convenient to design
Water-stable gravel antierosion experiment device be necessary.
Through consulting literatures, it is existing evaluation water-stable gravel scour resistance experimental rig Patents mainly have with
Under it is several：
CN 203658190U, micro- flexure is produced under Vehicle Load by simulating the ponding concrete flag that comes to nothing
Deformable squeeze current horizontal radial washes away substrate top surface fines, and is damaged with the test specimen quality of default flushing time specified pressure flow velocity
The erosion resistibility of mistake rate and limiting scour Two indices overall merit Cement Pavement Base Course material.
CN104198367A proposes to hang test specimen, using clockwise, rotate counterclockwise blade rotating mould below test specimen
Intend current to test specimen souring, using down wash quality and test specimen total mass ratio as evaluation material antiscour index.
CN103344517A is proposed in dynamic triaxial apparatus balancing gate pit, passes through axial pressure system, confined pressure system and Frequency Adjustable
The factor stimulation flowing pressures such as pressure regulation, flowing pressure generation are to material souring.
CN102183452B is proposed to wash away flowing pressure, is washed away number, washes away frequency, washing away the factors such as angle to material punching
Brush.
The experimental rig of existing evaluation water-stable gravel scour resistance mainly has the disadvantage that device is excessively multiple
It is miscellaneous, it is unfavorable for the popularization and application of Practical Project；Consider that experiment variable is not comprehensive, mould is washed away to material without more real simulation water
Work done in the manner of a certain author is used；Evaluation index is unreasonable, does not consider the influence washed away for a long time sufficiently.Water-stable gravel is by souring
When, it should consider size, the frequency of wheel dynamic load, flow velocity, flow, angle, the flushing time of flowing water, the saliferous of flowing water
Amount, solid-liquid two-phase comprehensive function, the temperature stress inside basic unit, plat-bottom escape effect, substrate top surface pump-absorb action, test specimen into
The factors such as type method, dry weight and weight in wet base, rather than only consider the souring of vehicular load and dynamic water, this is steady with real reclaimed water
The actual conditions that crushed rock base course destroys by multiple action and under the main function of water are different.
The content of the invention
It is an object of the invention to provide a kind of programmable water-stable gravel two-phase to roll scouring instrument, solves existing
The experimental rig of evaluation water-stable gravel scour resistance, which has device excessively complexity and considers that experiment variable is incomplete, to be lacked
Fall into.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of programmable water-stable gravel two-phase provided by the invention rolls scouring instrument, including water-stable gravel washes away
Control water tank, water circulation case and two-phase roll and wash away room, wherein, water-stable gravel washes away control water tank and two-phase rolls punching
Brush is connected between room by water circulation case.
Preferably, water-stable gravel wash away control water tank include tank body, be provided with tank body feeding gate with
For measuring and controlling the temperature control system of water temperature in water tank, wherein, feeding gate is located at the top of tank body.
Preferably, temperature control system includes thermocouple, adding thermal resistance plate, display and computer heating control button, wherein, add
Thermoelectricity baffle-wall is arranged on the bottom of tank body.
Preferably, water circulation case includes circulating box body, and sieves is provided with the inner chamber of circulating box body.
Preferably, two roll wash away room include wash away room body, demarcation strip, bearing member platform, rolling device and dynamic Control
System, wherein, demarcation strip is fixed on the inside for washing away room body, will wash away room body and is divided into upper and lower part；Bearing member platform is placed in
The centre position of demarcation strip, and the bottom of bearing member platform communicates with the centre position of demarcation strip, meanwhile, the bottom of bearing member platform is provided with
Rubber gauze pad；Rolling device is placed in the surface of bearing member platform, and provides power by power control system.
Preferably, rolling device includes rolling wheel and rotating brush, and rotating brush is provided with two, is respectively placed in the two of rolling wheel
Side, meanwhile, rotating brush and rolling wheel are connected by connecting rod with power control system.
Preferably, the direction of rotation of rotating brush and the direction of rotation of rolling wheel are opposite.
Preferably, power control system connection also has control button and pressure display unit.
Preferably, wash away on the body of room be provided with for wash away in case add solid particle feed hopper, the charging
Valve is provided with bucket.
Preferably, water-stable gravel, which washes away, controls water tank to roll punching with water circulation case, two respectively by mozzle
The top of brush room is rolled with two to be washed away the bottom of room and connects；Two are rolled and wash away the top of room and pass through guiding gutter and water circulation
Case connects.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of programmable water-stable gravel two provided by the invention rolls scouring instrument, is washed away by water-stable gravel
Control water tank rolls to two-phase washes away room offer liquid so that experimental simulation complies fully with actual road Scouring Condition so that
The structure of experiment is washed away closer to actual road.In the road of reality washes away, often solid-liquid two-phase acts on road simultaneously
On face, rather than just there is water；In addition, the temperature at plate bottom and top, osmotic pressure are also generally different, as winter spreads
After cryosel, the salt concentrations of road surface current is very big, temperature is relatively low, generally also can be by when road is acted on by current scour
To the corrosion function of salt；The present apparatus considered load, the phase separation of solid-liquid two, temperature, osmotic pressure, corrosion function etc. because
Element, device is more comprehensive, scientifical than ever.
Further, the temperature control system set is washed away on control water tank in water-stable gravel, can be controlled in reality
The temperature requirement of required liquid environment during testing.
Brief description of the drawings
Fig. 1 is the test principle figure of test specimen；
Fig. 2 is that water-stable gravel washes away control water tank schematic diagram；
Fig. 3 is water circulation case schematic diagram；
Fig. 4 is water circulation case schematic diagram；
Wherein, 1, tank body 2, circulating box body 3, wash away room body 4, demarcation strip 5, bearing member platform 6, rolling wheel 7, rotation
Brush 8, power control system 9, control button 10, pressure display unit 101, feeding gate 102, thermocouple 103, adding thermal resistance plate 104,
Display 105, computer heating control button 201, sieves 202, the first guiding gutter 301, feed hopper 302, the second guiding gutter.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is entered and described in detail.
In order to design a kind of effective, convenient, comprehensive water-stable gravel antierosion experiment device, and propose one
The more rational evaluation index of kind is, it is necessary to develop a kind of water-stable gravel Anti brushing Performance experimental rig, test method
And evaluation index, with overall merit water-stable gravel Anti brushing Performance, it is proposed that following 4 kinds of requirements：
(1) experimental rig must be able to active force of the good simulating vehicle load to water-stable gravel；
(2) experimental rig must be able to souring of the good simulation water to water-stable gravel；
(3) experimental rig must account for temperature stress, salinity erosion, pump-absorb action；
(4) rational evaluation index must be proposed.
As shown in Figure 1 to Figure 3, a kind of programmable water-stable gravel two provided by the invention rolls scouring instrument, including
Water-stable gravel washes away control water tank, water circulation case and two-phase and rolls and wash away room, wherein, water-stable gravel washes away control
Water tank and two-phase are rolled to wash away between room and connected by water circulation case.
Wherein, water-stable gravel washes away control water tank, for controlling needed for water circulation and the experiment of whole system
Water temperature difference and salt concentration.Including tank body 1, tank body 1 is 1m × 1m × 1m cube structure.Tank body 1
On be provided with feeding gate 101 and temperature control system, wherein, feeding gate 101 is opened in the top of tank body 1.
For measuring and controlling the water temperature control system in water tank including thermocouple 102, adding thermal resistance plate 103, show
Show device 104 and computer heating control button 105, wherein, adding thermal resistance plate 103 is arranged on the bottom of tank body 1.
Feeding gate 101 is used to add solids and salinity into tank body 1, and cleans the inside of tank body 1.
Water circulation case rolls the solid and liquid washed away in the water of room for separating two-phase, and liquid circulation is utilized, and wraps
Circulating box body 2 is included, circulating box body 2 is 50cm × 50cm × 50cm cube structure；Set in the inner chamber of circulating box body 2
It is equipped with sieves 201.
Wherein, sieves 201 is used to separate the solid and liquid in recirculated water.
As shown in figure 4, two are rolled and wash away room, for simulating souring of the solid-liquid two-phase factor to test specimen.Including punching
Room body 3, demarcation strip 4, bearing member platform 5, rolling device and power control system are brushed, wherein, demarcation strip 4, which is fixed on, washes away room body
3 inside, room body 3 will be washed away and divided for upper and lower part；Bearing member platform 5 is placed in the centre position of demarcation strip 4, and bearing member platform 5
Bottom communicates with the centre position of demarcation strip 4, meanwhile, the bottom of bearing member platform 5 is provided with rubber gauze pad；Rolling device is placed in bearing member
The surface of platform 5, and provide power by power control system 8.
Rolling device includes rolling wheel 6 and rotating brush 7, and rotating brush 7 is provided with two, is respectively placed in the both sides of rolling wheel 6,
Meanwhile rotating brush 7 and rolling wheel 6 are connected by connecting rod with power control system 8.The direction of rotation of rotating brush 7 is with rolling
The direction of rotation of wheel 6 is opposite.
Rolling wheel 6 simulates the effect of rolling and the pump-absorb action of wheel, and what rotating brush 7 was simulated and enhanced current washes away work
With, while the solid particle manually added and the solid particle departed from from test specimen can be cleaned, prevent particle to silt wheel up.
What is be connected simultaneously with power control system 8 also has control button 9 and pressure display unit 10.
Wash away on room body 3 be provided with for wash away in case add solid particle feed hopper 301, the feed hopper
Valve is provided with 301；The solid particle uses steel ball of the particle diameter for 5mm.
Wash away on room body 3 and be additionally provided with pickup door.
Wash away the rectangular parallelepiped structure that room body 3 is 40cm × 50cm × 70cm；Bearing member platform 5 is 15cm × 20cm × 60cm's
Metallic channel；The size of rubber gauze pad is 25cm × 55cm；Rolling wheel is height 20cm, diameter 12cm wheel.
Water-stable gravel, which washes away control water tank and rolled respectively with water circulation case, two by mozzle, washes away the upper of room
Portion rolls with two to be washed away the bottom of room and connects；Two are rolled and wash away the top of room and pass through the second guiding gutter 302 and water circulation
The first guiding gutter 202 docking connection on case.
Meanwhile valve is provided with mozzle；Wash away on the top mozzle of room body and be additionally provided with high-pressure hydraulic pump.
Compared with conventional erosion resistibility measure device, the present invention has the advantage that：
(1) washed away in the road of reality, often solid-liquid two-phase is acted on road surface simultaneously, rather than just there is water
Effect；In addition, the temperature at plate bottom and top, osmotic pressure are also generally different, and after spreading cryosel such as winter, the salinity of road surface current
Concentration is very big, temperature is relatively low, generally also can be by the corrosion function of salt when road is acted on by current scour；This hair
It is bright to have considered the factors such as load, the phase separation of solid-liquid two, temperature, osmotic pressure, corrosion function, than ever device more comprehensively,
Science；
(2) conventional erosion resistibility evaluation index is typically the difference of the quality with the quality before washing away and after washing away with rushing
Evaluation index of the ratio of quality as erosion resistibility before brush, but the destruction of test specimen is nonlinear, certain time internal loss
Quality be not enough to evaluate the erosion resistibility of test specimen, this evaluation index can not accurately reflect the antiscour energy of test specimen
Power, and the evaluation index of the present invention is the flex point time t that test specimen destroys t-beta curve0, than the unit interval loss mass ratio more
Add science.
In test, the size of test specimen is 15cm × 20cm × 30cm, and bearing member platform can place two test specimens simultaneously；The stream of water
Speed is set to 3m/s~12m/s, and steamboat maximum pressure is the 60% of test specimen compression strength, and the speed of brush is identical with steamboat, speed
For 5m/s~20m/s, salt concentration is arranged to 5%, and maximum temperature difference is 10 DEG C.
Bearing member platform places two test specimens simultaneously, can be very good to simulate the pump-absorb action of basic unit, the institute of schematic diagram below figure 1
Show：Two test specimens are placed on the bearing member platform for spreading rubber gauze pad side by side, and when steamboat is close to test specimen seam, rubber gauze pad, which is pressurized, to be become
Shape, test specimen tilt, the current direction test specimen direction of motion；When steamboat drives into second piece of test specimen, first piece of test specimen is replied as former state, and second
Rubber gauze pad under block test specimen is pressurized, and causes second piece of test specimen and first piece of test specimen to form faulting of slab ends, current deviate from test specimen motion side
To, therefore can also form current scour at plate bottom.Meanwhile the load action for bearing steamboat of test specimen repeatedly, in water and load
Pump-absorb action is formd under effect.
The specific operation process of instrument of the present invention is as follows：
(1) water-stable gravel wash away control water tank in plus about 80% water, start valve so that current are surely broken from water
Ground mass floor washes away control water tank and rolled into two-phase and washed away in the bottom of room, and causes water to be completely filled with lower part box；
(2) from gallery ports to adding a certain amount of salinity in the remaining water of casing so that the salinity contained in water is dense
Degree reaches requirement of experiment, starts computer heating control button, using remaining water in the heating water tank of adding thermal resistance plate 103, and uses thermoelectricity
Coupling 102 detects the temperature of Water in Water Tanks stream, and the temperature data in water tank can be read from temperature indicator, is heated in water tank
Water is higher than about 10 DEG C of water in original water tank, then reduces power so that the water of water tank is always maintained at this temperature；
(3) test specimen is washed away in shaping, and size is 20cm × 30cm × 40cm, and health is taken out after 7 days, is wiped with clean rag
Totally, to determine the erosion resistibility of test specimen, and the quality for determining now two test specimens is m1；Pickup door is opened, by test specimen
It is put into bearing member platform, and fixes from pickup door；
(4) valve is opened, two-phase is set by control button and rolls and wash away the flow and flow rate of room reclaimed water, open charging
The control valve of bucket, the speed gathered materials is filled in room to control feed hopper to roll to wash away to two-phase；Power control system is opened to press
Button, the rotary speed of rotating brush and the pressure of rolling wheel, the speed of service are set, related data can be read from display.
Claims (10)
1. a kind of programmable water-stable gravel two-phase rolls scouring instrument, it is characterised in that：Control is washed away including water-stable gravel
Water tank, water circulation case and two-phase processed roll and wash away room, wherein, water-stable gravel washes away control water tank and two-phase is rolled and washed away
Connected between room by water circulation case.
2. a kind of programmable water-stable gravel two-phase according to claim 1 rolls scouring instrument, it is characterised in that：Water is steady
Crushed rock base course, which washes away control water tank, includes tank body (1), and feeding gate (101) is provided with and for measuring on tank body (1)
With control water tank in water temperature temperature control system, wherein, feeding gate (101) is located at the top of tank body (1).
3. a kind of programmable water-stable gravel two-phase according to claim 2 rolls scouring instrument, it is characterised in that：Temperature
Control system includes thermocouple (102), adding thermal resistance plate (103), display (104) and computer heating control button (105), wherein,
Adding thermal resistance plate (103) is arranged on the bottom of tank body (1).
4. a kind of programmable water-stable gravel two-phase according to claim 1 rolls scouring instrument, it is characterised in that：Current
Circulating box includes circulating box body (2), and sieves (201) is provided with the inner chamber of circulating box body (2).
5. a kind of programmable water-stable gravel two-phase according to claim 1 rolls scouring instrument, it is characterised in that：Two
Roll and wash away room including washing away room body (3), demarcation strip (4), bearing member platform (5), rolling device and power control system, wherein,
Demarcation strip (4) is fixed on the inside for washing away room body (3), will wash away room body (3) and is divided into upper and lower part；Bearing member platform (5) is put
In the centre position of demarcation strip (4), and the bottom of bearing member platform (5) communicates with the centre position of demarcation strip (4), meanwhile, bearing member platform
(5) bottom is provided with rubber gauze pad；Rolling device is placed in the surface of bearing member platform (5), and is provided by power control system (8)
Power.
6. a kind of programmable water-stable gravel two-phase according to claim 5 rolls scouring instrument, it is characterised in that：Roll
Device includes rolling wheel (6) and rotating brush (7), and rotating brush (7) is provided with two, is respectively placed in the both sides of rolling wheel (6), together
When, rotating brush (7) and rolling wheel (6) are connected by connecting rod with power control system (8).
7. a kind of programmable water-stable gravel two-phase according to claim 6 rolls scouring instrument, it is characterised in that：Rotation
The direction of rotation for brushing (7) is opposite with the direction of rotation of rolling wheel (6).
8. a kind of programmable water-stable gravel two-phase according to claim 7 rolls scouring instrument, it is characterised in that：Power
Control system (8) connection also has control button (9) and pressure display unit (10).
9. a kind of programmable water-stable gravel two-phase according to claim any one of 5-8 rolls scouring instrument, its feature
It is：Wash away on room body (3) be provided with for wash away in case add solid particle feed hopper (301), the feed hopper
(301) valve is provided with.
10. a kind of programmable water-stable gravel two-phase according to claim any one of 1-8 rolls scouring instrument, its feature
It is：Water-stable gravel washes away control water tank and rolls the top for washing away room with water circulation case, two respectively by mozzle
Rolled with two and wash away the bottom of room and connect；Two are rolled and wash away the top of room and be connected by guiding gutter with water circulation case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148872.2A CN107655778B (en) | 2017-11-17 | 2017-11-17 | Two-phase rolling and flushing instrument for programmable water-stabilized macadam base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148872.2A CN107655778B (en) | 2017-11-17 | 2017-11-17 | Two-phase rolling and flushing instrument for programmable water-stabilized macadam base |
Publications (2)
| Publication Number | Publication Date |
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| CN107655778A true CN107655778A (en) | 2018-02-02 |
| CN107655778B CN107655778B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711148872.2A Active CN107655778B (en) | 2017-11-17 | 2017-11-17 | Two-phase rolling and flushing instrument for programmable water-stabilized macadam base |
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| CN (1) | CN107655778B (en) |
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