CN209215082U - A kind of simulating vehicle load moves the experimental rig of water scouring effect - Google Patents
A kind of simulating vehicle load moves the experimental rig of water scouring effect Download PDFInfo
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- CN209215082U CN209215082U CN201821498140.6U CN201821498140U CN209215082U CN 209215082 U CN209215082 U CN 209215082U CN 201821498140 U CN201821498140 U CN 201821498140U CN 209215082 U CN209215082 U CN 209215082U
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Abstract
A kind of simulating vehicle load moves the experimental rig of water scouring effect, is made of pressure vessel, test test specimen, pressure simulation system, flood pattern and computer control system.Computer control system sets target component according to test requirements document and purpose, realizes and moves water souring to the simulation under test test specimen difference duration, different numbers and different pressures rank.Flood pattern can realize the control to fluid temperature (F.T.) during test and flow by thermal station.The utility model is suitable for measuring water stability performance indicator of a plurality of types of bitumen mixture specimens under water-Wen-lotus collective effect, by quick positive pressurization and reversely vacuumize to change the atmospheric pressure of specimen surface, to realize that the dynamic to sample internal water pressure substitutes, dynamic water scour process of the simulation pore water to asphalt.
Description
Technical field
The utility model relates to asphalt anti-water damage property measuring technologies, more particularly to caused by vehicular load
Hole flowing pressure washes away asphalt with what is gathered materials, causes cohesive force to reduce, permeability increase, a series of water is caused to damage
The ancillary test analogue technique of evil phenomenon.
Background technique
Moisture Damage phenomenon is the damage type for being acknowledged as making number one in breaking of pitch surface in early stage, by domestic and international
The great attention of scholar and engineering staff, investigation, which shows the asphalt highway being generally open to traffic 1 year or more, can generate not
With the Water Damage of degree, in the presence of having Free water in pavement structure, the structural failure that wheel load generates each time is than road surface
40 times or more are higher by when relatively dry.
In recent years, the water sprinkling path engineering that carries out of needs of protection environment is disposed due to fugitive dust in city, watering frequency height, when
Between it is long, in addition to the freezed in winter phase, almost daily all continual progress, thus bring artificial " precipitation " phenomenon, also exacerbate
The Water Damage degree of urban road.
Currently, mainly having two major classes to the Moisture Susceptibility Evaluation of bituminous concrete, one kind is for loose pitch
Mixture carries out qualitative test, and the removing journey of surface of aggregate asphalt membrane is mainly evaluated by visual observation or instrument inspection
Degree, in this, as the foundation of adhesiveness between determining pitch and gathering materials.Such methods can only reflect in loose asphalt mixture
Adhesiveness between pitch and mineral aggregate cannot characterize the true Riddled Condition in road surface and stress condition, so this kind of test method is often made
For the test for simply differentiating material.
Another kind of is that quantitative test is carried out for molded bitumen mixture specimen or core sample, main to pass through test test specimen
Mechanics index of physics under the conditions of immersion as the standard for judging stability of asphalt mixture, split by such as Marshall stability
Resistance to spalling, radial modulus of resilience etc., main test method have immersion Marshall test, indirect tensile test on frozen-thaw, Immersion rut examination
It tests.Such method mainly carries out Moisture Damage test with molding bitumen mixture specimen, simulates road in different ways
Face by water, temperature and load destruction, test it is comprehensive stronger, not only reflect the adhesion property of pitch and building stones,
Also reflect the whole cohesive force of mixture.However above-mentioned test simulation load-destructive process of the water-temperature to mixture in,
Mixture is substantially the effect for being in hydrostatic pressure, and test specimen inner pore aqueous fluid cannot form dynamic pressure, and there is no embody load
Caused dynamic water souring and to the infiltrative aggravation of mixture act on.
Summary of the invention
The purpose of the utility model is to provide the experimental rigs that a kind of simulating vehicle load moves water scouring effect.
The utility model is a kind of experimental rig of dynamic water scouring effect of simulating vehicle load, by pressure vessel, pressure mould
Quasi- loading system, flood pattern and computer control system composition, pressure vessel by pedestal 1, sample ring 3, standing screw 4,
Top cover 7, clamping screw 8 and buffering spacer 9 form, and the lower part of pedestal 1 is equipped with inlet valve 2 and flowing water Valve 12, sample ring 3,
Top cover 7 is fixed on pedestal 1 by standing screw 4, clamping screw 8；Pressure simulation loading system by being fixed in sample ring 3 on
The vacuum-pumping pipeline 6 in portion, pressure pipeline 10, balance pipeline 11 and pressure gauge 5 are constituted；Flood pattern is by water tank 23, heating
Device 25, temperature control device 22 and flow control valve 21 are constituted, and wherein heating device 25 is located at the inside of water tank 23, flowmeter
20 and flow control valve 21 be located at the right side of water tank outlet valve 19,2 phase of inlet valve of outlet valve 19 and pressure vessel
Even.
The utility model has the beneficial effects that the utility model is the improvement to conventional immersion Marshall test.Existing skill
For art in simulation load-destructive process of the water-temperature to mixture, mixture is substantially in the effect of hydrostatic pressure, in test specimen
Hole aqueous fluid cannot form dynamic pressure, and there is no embody to move water souring and infiltrative to mixture caused by load
Aggravation effect.The utility model can be filled up and can be studied based on the stability of asphalt mixture under dynamic pore effect of water pressure
Test method.
Detailed description of the invention
Some specific implementations of the utility model are described in detail by way of example and not limitation in attached drawing, and attached drawing may not
It is drawn to scale.Fig. 1 is that the utility model simulates dynamic water scouring effect apparatus system general illustration, and Fig. 2 is that this is practical
Novel analog moves water scouring effect device pedestal structure top view, and Fig. 3 is that the utility model simulates dynamic water scouring effect device examination
Sample ring structure top view, Fig. 4 are that the utility model simulates dynamic water scouring effect device cap structure top view.Appended drawing reference and right
Answer title are as follows: 1-pressure vessel pedestal, 2-inlet valves, 3-sample rings, 4-standing screws, 5-pressure gauges, 6-take out very
Blank pipe road, 7-pressure vessels top covers, 8-buffering spacers, 9-clamping screws, 10-pressure pipelines, 11-balance pipelines, 12-
Flowing water Valve, 13-test test specimens, 14-pressure vessel cavitys, 15-computer control systems, 16-control encoders, 17-
Circuit protection device, 18-power-supply systems, 19-water tank flowing water Valves, 20-flowmeters, 21-flow control valves, 22-temperature
Control device, 23-water tanks, the inlet valve of 24-water tanks, 25-heating rods.
Specific embodiment
As shown in Figure 1, the utility model is a kind of experimental rig of dynamic water scouring effect of simulating vehicle load, held by pressure
Device, pressure simulation loading system, flood pattern and computer control system composition, pressure vessel is by pedestal 1, sample ring 3, solid
To determine screw rod 4, top cover 7, clamping screw 8 and buffering spacer 9 to form, the lower part of pedestal 1 is equipped with inlet valve 2 and flowing water Valve 12,
Sample ring 3, top cover 7 are fixed on pedestal 1 by standing screw 4, clamping screw 8；Pressure simulation loading system is by being fixed on examination
The vacuum-pumping pipeline 6 of 3 middle and upper part of sample ring, pressure pipeline 10, balance pipeline 11 and pressure gauge 5 are constituted；Flood pattern is by water storage
Case 23, heating device 25, temperature control device 22 and flow control valve 21 are constituted, and wherein heating device 25 is located at the interior of water tank 23
Portion, flowmeter 20 and flow control valve 21 are located at the right side of water tank outlet valve 19, outlet valve 19 and pressure vessel into
Penstock 2 is connected.
As shown in Figure 1, the 220V power interface of the power supply system 18 in computer control system 15 respectively with pressure pipeline
10 solenoid valves and balance 11 power of electromagnetic valve interface of pipeline are connected, the 24V power interface and vacuum-pumping pipeline 6 of power supply system 18
Solenoid valve is connected.
As shown in Figure 1, the 16 preset loop time range of control encoder in computer control system 15 is 0~9999s,
Ringing numbers range is 0~9999 time.
As Figure 1 and Figure 4, the 6 flow parameter range of vacuum-pumping pipeline of pressure simulation loading system is 4~6L/min, most
Big ultimate vacuum pressure is 0.088MPa, and highest frequent start-stop number is about 1,800,000 times.
As Figure 1 and Figure 4, the 10 flow parameter range of pressure pipeline of pressure simulation loading system is 10~12L/min,
Maximum adjustable pressure is 0.75MPa.
As Figure 1 and Figure 4, flood pattern compact water storage tank is 10L, and the preset temperature range of temperature control device 22 is 10 DEG C
~80 DEG C.
As shown in Figure 1, dynamic water scouring simulation test device is by pressure vessel, test test specimen, pressure simulation system, water filling
System and computer control system composition.Computer control system is according to the target component automatic pressure control simulation loading of setting
The alternating of system, the pore water pressure of Control experiment test specimen changes, the temperature and water inlet of water during flood pattern Control experiment
Amount.
As shown in Figure 2, Figure 3, Figure 4, test platform is made of pedestal 1, sample ring 3, standing screw 4, top cover 7.Wherein, bottom
Seat lower part is equipped with inlet valve 2, flowing water Valve 12, and test test specimen 13 is placed in the fixed groove of pedestal, passes through four on pedestal
Sample ring 3 and top cover 7 are fixed on pedestal 1 by root standing screw 4, and buffering spacer 8 and fixing bolt 9 are utilized locking tool
Locking, completes the sealing of entire pressure vessel.
Pressure simulation system by being fixed on pressure gauge 5, the vacuum-pumping pipeline 6 of 3 middle and upper part of sample ring, pressure pipeline 10 and
Pipeline 11 is balanced to constitute.By the control of computer control system 15, pressure simulation system can be to pressure vessel internal cavity 14
Gas carry out positive/negative-pressure alternating action, positive pressurization and reversed is realized to the pore water pressure in test specimen by the variation of air pressure
The effect inhaled is pumped, and then forms a kind of effect that power washes away.
Flood pattern is made of water tank 23, temperature control device 22 and flow control valve 21.Wherein temperature control device is by water tank
Embedded heating rod 25 and temperature control device 22 form.19 be water tank outlet valve, flowmeter 20 and flow control valve 21
In the right side of outlet valve 19.Water yield and the rate of output water are adjusted by adjusting flow control valve, reach test requirements document stream
After amount and temperature, the inlet valve 2 of pressure vessel and the outlet valve 19 of water tank are closed.
Computer control system is made of power supply system 18, protective device 17 and control encoder 16, control of power supply system
Vacuum-pumping pipeline 6, pressure pipeline 10 and the opening and closing for balancing 11 solenoid valve system of pipeline, protective device 17 may be implemented to entire
The overload protection of pilot system circuit, control encoder may be implemented to the cycle-index of test, the setting of circulation time and repair
Change.
The working process of the utility model is as follows:
(1) by computer control system to the cycle-index of pressure simulation loading system in test, the positive pressure duration,
Draw vacuum duration, equilibration time, intercycle time are set.The basic procedure for the pressure circulation system entirely tested
(atmospheric pressure)-positive pressurization is balanced for positive pressurization-balance (atmospheric pressure)-reversely vacuumizing-；
(2) prepare test specimen and water tank is filled the water, open heating device.Bitumen mixture specimen is placed in pressure
On the fixed base of container base, closed pressure container；
(3) it opens flood pattern bottom flowing water Valve and the inlet valve of pressure vessel pedestal starts to fill the water, and pass through
Flow monitoring system controls inflow and outle water rate, closes Inlet and outlet water valve after reaching the water value of test requirements document；
(4) start computer control system, the dynamic water for carrying out sample washes away simulated circulation test；
(5) after the completion of setting cycle-index, power-supply system is closed, test specimen is taken out from pressure vessel, carried out next
The test job of step.
Claims (6)
1. a kind of simulating vehicle load moves the experimental rig of water scouring effect, by pressure vessel, pressure simulation loading system, water filling
System and computer control system composition, it is characterised in that pressure vessel by pedestal (1), sample ring (3), standing screw (4),
Top cover (7), clamping screw (8) and buffering spacer (9) composition, the lower part of pedestal (1) are equipped with inlet valve (2) and flowing water Valve
(12), sample ring (3), top cover (7) are fixed on pedestal (1) by standing screw (4), clamping screw (8)；Pressure simulation load
System is by being fixed on the vacuum-pumping pipeline (6) of sample ring (3) middle and upper part, pressure pipeline (10), balance pipeline (11) and pressure
Table (5) is constituted；Flood pattern is by water tank (23), heating device (25), temperature control device (22) and flow control valve (21) structure
At wherein heating device is located at the inside of water tank (23), and flowmeter (20) and flow control valve (21) are located at water tank
The right side of outlet valve (19), outlet valve (19) are connected with the inlet valve (2) of pressure vessel.
2. the experimental rig that simulating vehicle load according to claim 1 moves water scouring effect, it is characterised in that computer
The 220V power interface of power supply system (18) in control system (15) respectively with pressure pipeline (10) solenoid valve and balance pipe
Road (11) power of electromagnetic valve interface is connected, and the 24V power interface of power supply system (18) is connected with vacuum-pumping pipeline (6) solenoid valve.
3. the experimental rig that simulating vehicle load according to claim 1 moves water scouring effect, it is characterised in that computer
Control encoder (16) preset loop time range in control system (15) is 0~9999s, and ringing numbers range is 0
~9999 times.
4. the experimental rig that simulating vehicle load according to claim 1 moves water scouring effect, it is characterised in that pressure mould
Vacuum-pumping pipeline (6) the flow parameter range of quasi- loading system is 4~6L/min, and greatest limit vacuum pressure is 0.088MPa,
Highest frequent start-stop number is about 1,800,000 times.
5. the experimental rig that simulating vehicle load according to claim 1 moves water scouring effect, it is characterised in that pressure mould
Pressure pipeline (10) the flow parameter range of quasi- loading system is 10~12L/min, and maximum adjustable pressure is 0.75MPa.
6. the experimental rig that simulating vehicle load according to claim 1 moves water scouring effect, it is characterised in that water filling system
System compact water storage tank is 10L, and the preset temperature range of temperature control device (22) is 10 DEG C~80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498140.6U CN209215082U (en) | 2018-09-13 | 2018-09-13 | A kind of simulating vehicle load moves the experimental rig of water scouring effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821498140.6U CN209215082U (en) | 2018-09-13 | 2018-09-13 | A kind of simulating vehicle load moves the experimental rig of water scouring effect |
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| Publication Number | Publication Date |
|---|---|
| CN209215082U true CN209215082U (en) | 2019-08-06 |
Family
ID=67454005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821498140.6U Expired - Fee Related CN209215082U (en) | 2018-09-13 | 2018-09-13 | A kind of simulating vehicle load moves the experimental rig of water scouring effect |
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| CN (1) | CN209215082U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873669A (en) * | 2019-11-27 | 2020-03-10 | 江苏中路工程检测有限公司 | Device and method for evaluating and testing long-term water stability of asphalt mixture |
| CN112525745A (en) * | 2020-11-03 | 2021-03-19 | 北京科技大学 | Physical simulation test device for scouring erosion of tundish lining refractory and using method |
| CN112881214A (en) * | 2021-01-14 | 2021-06-01 | 北京科技大学 | Synchronous high-frequency mechanical loading test system for hydrodynamic pressure environment |
| CN112881142A (en) * | 2021-01-14 | 2021-06-01 | 北京科技大学 | Asphalt health-preserving test container and method for stepped erosion in dynamic water pressure environment |
-
2018
- 2018-09-13 CN CN201821498140.6U patent/CN209215082U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873669A (en) * | 2019-11-27 | 2020-03-10 | 江苏中路工程检测有限公司 | Device and method for evaluating and testing long-term water stability of asphalt mixture |
| CN110873669B (en) * | 2019-11-27 | 2021-01-05 | 中路交科(江苏)检测科技有限公司 | Device and method for evaluating and testing long-term water stability of asphalt mixture |
| CN112525745A (en) * | 2020-11-03 | 2021-03-19 | 北京科技大学 | Physical simulation test device for scouring erosion of tundish lining refractory and using method |
| CN112881214A (en) * | 2021-01-14 | 2021-06-01 | 北京科技大学 | Synchronous high-frequency mechanical loading test system for hydrodynamic pressure environment |
| CN112881142A (en) * | 2021-01-14 | 2021-06-01 | 北京科技大学 | Asphalt health-preserving test container and method for stepped erosion in dynamic water pressure environment |
| CN112881142B (en) * | 2021-01-14 | 2022-01-04 | 北京科技大学 | Asphalt health-preserving test container and method for stepped erosion in dynamic water pressure environment |
| CN112881214B (en) * | 2021-01-14 | 2022-02-11 | 北京科技大学 | Synchronous high-frequency mechanical loading test system for hydrodynamic pressure environment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 Termination date: 20200913 |