CN107957314A - The hydrodynamic pressure value test device of load and the lower road deck of dynamic water coincidence effect - Google Patents
The hydrodynamic pressure value test device of load and the lower road deck of dynamic water coincidence effect Download PDFInfo
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- CN107957314A CN107957314A CN201711308970.8A CN201711308970A CN107957314A CN 107957314 A CN107957314 A CN 107957314A CN 201711308970 A CN201711308970 A CN 201711308970A CN 107957314 A CN107957314 A CN 107957314A
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- road deck
- test specimen
- water tank
- pressure value
- water
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 230000000694 effects Effects 0.000 title claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 21
- 230000000630 rising effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- 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
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- 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
- G01N2203/0236—Other environments
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to the hydrodynamic pressure value test device of a kind of load and the lower road deck of dynamic water coincidence effect, including water tank, in water tank can fixed placement road deck test specimen, the hole for installing pressure sensor, pressure sensor connection digital independent device are opened up on road deck test specimen；The upside installation of road deck test specimen can compress road deck test specimen and carry out the rolling device of back and forth movement, and inlet opening is provided with water tank.The present invention into water tank water filling to form certain thickness moisture film on road deck test specimen, pass through fixation pressure sensor in the hole on road deck test specimen, flowing pressure can be measured, by setting rolling device, it is further applied load easy to the panel test specimen that satisfies the need and does straight line back and forth movement on road deck test specimen, more really flowing pressure is to the actual flowing pressure at concrete slab plate bottom and plate top under vehicular load repeat function on measurement road surface, and measurement is accurately.
Description
Technical field
The invention belongs to washout test field, and in particular to the dynamic hydraulic pressure of a kind of load and the lower road deck of dynamic water coincidence effect
Force value tests device.
Background technology
Cement or bituminous paving are chronically exposed under natural environment, in condition of raining or when having road table ponding, Hui roads table
Face forms one layer of cross flow moisture film.During the running at high speed of automobile, the moisture film between tire and road surface can be subject to one kind
Sluicing acts on, so as to produce an instantaneous dynamic water pressure.This flowing pressure washes away road surface repeatedly, and invades road surface
Inside configuration induces the road damages such as peeling, Moisture Damage.For bituminous paving, flowing pressure easily makes asphalt produce pine
Dissipate, peel off, reduce bitumen layer effective thickness, and then cause broken inside whole surface layer.And due to the gap of asphalt surface course
In the presence of erosion damage will certainly be produced in each structure sheaf by being oozed under ponding.For cement pavement, move water and mainly produced on road deck top
Raw souring, which forms craterlet and is sewn on plate bottom by cutting and produces, washes away infringement and forms purt mud and the infringement such as peel off, seriously
Influence the performance on road surface.
For above-mentioned Moisture Damage, for simulated roadway practical function environment, in recent years, research both domestic and external is also from static state
Moisture Damage has gradually been transferred to the broken ring effect on dynamic Moisture Damage i.e. load and the lower road surface of dynamic water coincidence effect.But in dynamic hydraulic pressure
In terms of the simulation of force value, hydrodynamic pressure value that simulation laboratory test uses usually all is by theory analysis or directly to use hydraulic pressure
Pressure value on table obtains, and lacks reliability and systematicness, it is impossible to the flowing pressure that the true actual road surface of reflection is subject to.
The content of the invention
It is an object of the invention to overcome problems of the prior art, there is provided under a kind of load and the effect of dynamic water coincidence
The hydrodynamic pressure value test device of road deck, can accurately measure the dynamic hydraulic pressure that load and the lower road deck of dynamic water coincidence effect are subject to
Force value.
In order to achieve the above object, the present invention adopts the following technical scheme that：
Including water tank, in water tank can fixed placement road deck test specimen, open up for installing pressure biography on road deck test specimen
The hole of sensor, pressure sensor connection digital independent device；The upside installation of road deck test specimen can compress road deck test specimen
And the rolling device of back and forth movement is carried out, it is provided with inlet opening on water tank.
Further, the bottom inside of water tank sets rubber slab base, the upper surface of rubber slab base be provided with it is raised and
Interconnected water storage tank.
Further, four inside sidewalls of water tank are provided with the rubber block for fixing road deck test specimen.
Further, after road deck test specimen is put into water tank, inlet opening is higher than the upper surface of road deck test specimen.
Further, water level line is provided with the inside of water tank, is opened up on the side of water tank with valvular spilled water hole.
Further, the hole on road deck test specimen is cylindrical cavity.
Further, pressure sensor by support brandreth be installed on road deck test specimen hole in, pressure sensor and
It is threaded connection between support brandreth.
Further, rolling device includes being used for the experiment wheel for compressing road deck test specimen upper surface, and experiment wheel is connected to
The oil gear of pressure is adjusted, oil gear passes through linkage connecting power device.
Further, experiment wheel uses the rubber experiment wheel with tyre tread.
Further, power set use motor, and speed regulator and connection linkage are set on the output shaft of motor.
Compared with prior art, the present invention has technique effect beneficial below：
Water filling on road deck test specimen to form certain thickness moisture film into water tank by the present invention, by road deck test specimen
Upper setting hole, the fixation pressure sensor in hole, can measure flowing pressure, by setting rolling device, easy to satisfy the need
Panel test specimen is further applied load and straight line back and forth movement is done on road deck test specimen, and more really measurement road surface is repeated in vehicular load
Actual flowing pressure of the lower flowing pressure to concrete slab plate bottom and plate top is acted on, the present invention is common using dynamic load and moisture film
Effect, the damage for the surface concrete that satisfies the need beneficial to research load and dynamic water collective effect, to load and is moved by digital independent device
The hydrodynamic pressure value that the lower road deck of water coincidence effect is subject to is read out, and measurement is accurate.The present invention is rational in infrastructure, easy to operate,
Control is flexible.
Further, the present invention has certain elasticity, can preferably make test specimen bottom by setting rubber slab base
Water formation is washed away and pump-absorb action, simulation effect are more preferable.
Further, the present invention can alleviate what road deck test specimen was come due to experiment rolling pressure zone by setting rubber block
Vibrations.
Further, the present invention can observe by setting water level line and spilled water hole and adjust water film thickness, will not damage
Upside mechanism.
Further, can measurement position as needed to be threadedly coupled between pressure sensor of the present invention and support brandreth
The depth of thread that is screwed into of depth adjustment pressure sensor.
Further, the present invention can change the size of flowing pressure by setting oil gear by varying oil pressure,
Realize the accurate control to scour process.
Further, the present invention is by using the rubber experiment wheel with tyre tread, the actual effect of rolling of more preferable simulation.
Further, the present invention can change the rotating speed of motor output shaft by setting speed regulator, change dynamic water and wash away
Frequency, realize the accurate control to scour process.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Wherein, 1 is linkage, and 2 be oil gear, and 3 be moisture film, and 4 be inlet opening, and 5 be pressure sensor, and 6 be support
Brandreth, 7 be motor, and 8 be experiment wheel, and 9 be water tank, and 10 be spilled water hole, and 11 be rubber block, and 12 be road deck test specimen, and 13 be rubber
Plate base.
Embodiment
The present invention is described in further details below in conjunction with the accompanying drawings.
Referring to Fig. 1, the present invention includes water tank 9, in water tank 9 can fixed placement road deck test specimen 12, road deck test specimen 12
Centre drills through one and is used to installing the hole of pressure sensor 5, which is cylindrical cavity, a diameter of 80mm；Pressure sensing
Device 5 is connected by supporting brandreth 6 to be installed in the hole of road deck test specimen 12 between pressure sensor 5 and support brandreth 6 for screw thread
Connect, wherein pressure sensor 5 carries external screw thread, and support brandreth 6 carries internal thread, by with externally threaded pressure sensor 5
The buried depth that support brandreth 6 controls sensor is screwed into, supports the hole between brandreth 6 and hole to be filled by fine sand closely knit；Pressure
Force snesor 5 connects digital independent device, and digital independent device can be the transmitter or data collecting card being connected with host computer
Deng.The upside installation of road deck test specimen 12 can compress road deck test specimen 12 and carry out the rolling device of back and forth movement.
Rolling device includes being used for the experiment wheel 8 for compressing 12 upper surface of road deck test specimen, is further applied load to test specimen；Experiment wheel
8 be connected to adjust the oil gear 2 that experiment wheel 8 satisfies the need 12 pressure of panel test specimen, can change dynamic water by varying oil pressure
The size of pressure, realizes the accurate control to scour process.Oil gear 2 is by 1 connecting power device of linkage, by dynamic
Power apparatus drives linkage 1 to move, so as to do straight line back and forth movement on road deck test specimen 12 with dynamic test wheel 8.Experiment wheel 8
Using the rubber experiment wheel with tyre tread shape.Power set use motor 7, and rotational speed regulation is set on the output shaft of motor 7
Device and connection linkage 1, by setting speed regulator, change the rotating speed of motor output shaft, change the frequency that dynamic water washes away,
Realize the accurate control to scour process.
The bottom inside of water tank 9 sets rubber slab base 13, has certain elasticity, and the upper surface of rubber slab base 13 is set
There are larger protrusion and interconnected water storage tank, the bottom of water tank 9 is formed roughness, can preferably make test specimen bottom
The water formation in portion is washed away and pump-absorb action, simulation effect are more preferable.Four inside sidewalls of water tank 9 are provided with for fixing road deck
The rubber block 11 of test specimen 12, can alleviate road deck test specimen 12 since experiment wheel 8 rolls the vibrations brought.
The external cable of pressure sensor 5 is exported by the lower section of 12 hole of road deck test specimen, through rubber slab base 13,
And passed through between rubber slab base 13 and water tank 9, through being pierced by connection digital independent device between rubber block 11 and water tank 9.Electricity
Cable can use water-proof cable, and rubber slab base 13 and rubber block 11 also function to the effect of hermetically-sealed cable.
The inlet opening 4 of valve, after road deck test specimen 12 is put into water tank 9, the position of inlet opening 4 are provided with water tank 9
Higher than the upper surface of road deck test specimen 12.Water level line is carved with the inner side of water tank 9, can observe the thickness of moisture film 3, in water tank 9
Opened up on side with valvular spilled water hole 10, when more than the moisture film of required thickness, the valve opened on spilled water hole 10 carries out
Adjust, and open valve in off-test and carry out draining.
The present invention main operation principle and process：
During experiment, a monoblock road deck test specimen 12 is placed in the top surface of rubber slab base 13, by rubber block 11 by road
Panel test specimen 12 is fixed.The flowing pressure for first passing through the road surface depth for needing to measure is screwed into pressure sensor 5, by pressure sensing
Device 5 is embedded in cylindrical cavity together with support brandreth 6, is filled up at hole with fine sand.The valve on inlet opening 4 is opened to water
Water filling in case 9, forms certain thickness moisture film 3 and stops water filling, places experiment wheel 8 after the completion of the 12 surface water filling of road deck test specimen
To 12 surface of road deck test specimen, contact and compress.1 joint test wheel 8 of linkage and oil gear 2, start motor 7
Afterwards, motor 7 does straight line back and forth movement with dynamic test wheel 8 by linkage 1 on slideway, 12 surface area water of road deck test specimen by
Extruding to experiment wheel 8 forms flowing pressure 12 surface of panel test specimen of satisfying the need and constantly washes away.The ponding on 12 surface of road deck test specimen
Entered by hole inside road deck test specimen 12, and certain flowing pressure formed on pressure sensor 5, by transmitter or
Data collecting card uploads to host computer, you can the hydrodynamic pressure value at different depth is read on host computer such as computer.Pass through increasing
The oil pressure to add deduct in few oil gear 2, so that flowing pressure size can be adjusted by changing, changes motor by speed regulator
The rotating speed of 7 outputs, can control dynamic water to wash away frequency.
The present invention is by drilling through cylindrical cavity, by supporting brandreth 6 that pressure sensing is fixedly installed in cylindrical cavity
Device 5, can measure the flowing pressure of Different Ground depth, by setting experiment wheel 8 and oil gear 2, easy to be applied to test specimen
Loading carries, and by setting power set and linkage 1, band dynamic test wheel 8 does straight line back and forth movement on test specimen, more really
Measuring road surface, flowing pressure, can be more to the actual flowing pressure at concrete slab plate bottom and plate top under vehicular load repeat function
The generation of real simulation cement concrete pavement flowing pressure, more really measures road surface under vehicular load repeat function
Flowing pressure, is closely connected with actual cement pavement panel Scouring Condition, satisfies the need beneficial to research load with dynamic water collective effect
The damage of surface concrete.The present invention provides the pressure value test device of a kind of load and the lower road deck of dynamic water coincidence effect, energy
Flowing pressure caused by enough simulated driving vehicles is to the souring on Cement Concrete Pavement Slab top and plate bottom, rational in infrastructure, behaviour
Make simply, control is flexible.
The present invention embedding pressure sensor of different depth inside test specimen, and dynamic load and moisture film collective effect are used, more
Real simulated roadway flowing pressure actually washing away to concrete slab under vehicular load repeat function, more really measures road
The flowing pressure that panel is subject to.
Claims (10)
- A kind of 1. hydrodynamic pressure value test device of load and the lower road deck of dynamic water coincidence effect, it is characterised in that：Including water tank (9), in water tank (9) can fixed placement road deck test specimen (12), open up for installing pressure sensing on road deck test specimen (12) The hole of device (5), pressure sensor (5) connection digital independent device；The upside installation of road deck test specimen (12) can compress road Panel test specimen (12) and the rolling device for carrying out back and forth movement, are provided with inlet opening (4) on water tank (9).
- 2. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：The bottom inside of water tank (9) sets rubber slab base (13), and the upper surface of rubber slab base (13) is provided with convex The water storage tank for rising and being interconnected.
- 3. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Four inside sidewalls of water tank (9) are provided with the rubber block (11) for fixing road deck test specimen (12).
- 4. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：After road deck test specimen (12) is put into water tank (9), inlet opening (4) are higher than the upper surface of road deck test specimen (12).
- 5. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Water level line is provided with the inside of water tank (9), is opened up on the side of water tank (9) with valvular spilled water hole (10).
- 6. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Hole on road deck test specimen (12) is cylindrical cavity.
- 7. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Pressure sensor (5) is by supporting brandreth (6) to be installed in the hole of road deck test specimen (12), pressure sensing It is threaded connection between device (5) and support brandreth (6).
- 8. the hydrodynamic pressure value test device of a kind of load according to claim 1 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Rolling device includes being used for the experiment wheel (8) for compressing road deck test specimen (12) upper surface, experiment wheel (8) connection For adjusting the oil gear (2) of pressure, oil gear (2) passes through linkage (1) connecting power device.
- 9. the hydrodynamic pressure value test device of a kind of load according to claim 8 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Experiment wheel (8) uses the rubber experiment wheel with tyre tread.
- 10. the hydrodynamic pressure value test device of a kind of load according to claim 8 and the lower road deck of dynamic water coincidence effect, It is characterized in that：Power set use motor (7), and speed regulator and connection linkage are set on the output shaft of motor (7) (1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308970.8A CN107957314B (en) | 2017-12-11 | 2017-12-11 | Dynamic water pressure value testing device of road panel under load and dynamic water coupling effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711308970.8A CN107957314B (en) | 2017-12-11 | 2017-12-11 | Dynamic water pressure value testing device of road panel under load and dynamic water coupling effect |
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| Publication Number | Publication Date |
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| CN107957314A true CN107957314A (en) | 2018-04-24 |
| CN107957314B CN107957314B (en) | 2024-04-19 |
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| CN201711308970.8A Active CN107957314B (en) | 2017-12-11 | 2017-12-11 | Dynamic water pressure value testing device of road panel under load and dynamic water coupling effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798835A (en) * | 2019-02-20 | 2019-05-24 | 同济大学 | Asphalt pavement surface water film thickness single-point monitoring device and installation method |
| CN111521755A (en) * | 2020-04-29 | 2020-08-11 | 中铁第四勘察设计院集团有限公司 | Testing device and testing method for research on single-side water-soaking disintegration characteristics of mudstone |
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| JP2000193572A (en) * | 1998-12-28 | 2000-07-14 | Kanto Auto Works Ltd | Test apparatus for evaluating durability of concrete, and durability evaluating method of concrete |
| CN101907548A (en) * | 2010-07-20 | 2010-12-08 | 申爱琴 | Bituminous pavement material hydrodynamic pressure washing tester |
| CN204594787U (en) * | 2015-05-26 | 2015-08-26 | 中国电建集团中南勘测设计研究院有限公司 | A kind of test unit measuring plunge pool floor block gap flowing pressure |
| CN204882282U (en) * | 2015-08-19 | 2015-12-16 | 长安大学 | Wheel stone roller formula road surface cement concrete board moves water washout test device |
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| CN106092784A (en) * | 2016-05-31 | 2016-11-09 | 长安大学 | A kind of constant speed carries formula load flowing pressure scouring instrument and using method thereof surely |
| CN106644788A (en) * | 2016-11-11 | 2017-05-10 | 长安大学 | A tester and testing method for stimulating fatigue load and dynamic water erosion action |
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2017
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| JPH0278923A (en) * | 1988-09-14 | 1990-03-19 | Chubu Electric Power Co Inc | Measuring method for dynamic water pressure and dynamic water pressure meter |
| JP2000193572A (en) * | 1998-12-28 | 2000-07-14 | Kanto Auto Works Ltd | Test apparatus for evaluating durability of concrete, and durability evaluating method of concrete |
| CN101907548A (en) * | 2010-07-20 | 2010-12-08 | 申爱琴 | Bituminous pavement material hydrodynamic pressure washing tester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798835A (en) * | 2019-02-20 | 2019-05-24 | 同济大学 | Asphalt pavement surface water film thickness single-point monitoring device and installation method |
| CN111521755A (en) * | 2020-04-29 | 2020-08-11 | 中铁第四勘察设计院集团有限公司 | Testing device and testing method for research on single-side water-soaking disintegration characteristics of mudstone |
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| Publication number | Publication date |
|---|---|
| CN107957314B (en) | 2024-04-19 |
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