CN103439478B - Pavement material dynamic water pressure washing tester capable of metering washing water amount - Google Patents
Pavement material dynamic water pressure washing tester capable of metering washing water amount Download PDFInfo
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- CN103439478B CN103439478B CN201310388316.8A CN201310388316A CN103439478B CN 103439478 B CN103439478 B CN 103439478B CN 201310388316 A CN201310388316 A CN 201310388316A CN 103439478 B CN103439478 B CN 103439478B
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Abstract
The invention discloses a pavement material dynamic water pressure washing tester capable of metering washing water amount. The pavement material dynamic water pressure washing tester comprises a closed test box and a high-pressure water pump, wherein a pipeline is arranged between the closed test box and the high-pressure water pump and comprises a dynamic water loading pipe and a dynamic water unloading pipe; one end of the dynamic water loading pipe is connected with the high-pressure water pump, and the other end of the dynamic water loading pipe is connected with the closed test box; a water supply electromagnetic valve is arranged on the dynamic water loading pipe; one end of the dynamic water unloading pipe is connected between the water supply electromagnetic valve of the dynamic water loading pipe and the closed test box, and the other end of the dynamic water unloading pipe is provided with a metering valve for metering the washing water amount and a first metering water tank. The pavement material dynamic water pressure washing tester capable of metering the washing water amount can meter the clockwise and anticlockwise dynamic water washing amount and the unidirectional dynamic water washing amount within a cycle and is precise in metering result, and the metered washing water amount conforms to an actual washing water amount.
Description
Technical field
The present invention relates to a kind of ground surface material performance detection tester, particularly relate to a kind of measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield.
Background technology
Rainwater enters ground surface material inside by the space of ground surface material, when wheel crosses at a high speed, the flowing pressure that road surface produces by vehicular load becomes negative pressure from malleation at short notice, ground surface material is under positive/negative-pressure alternating action repeatedly and flowing pressure souring, cause peeling off of gathering materials, and then crack, road surface is constantly extended until through.Ground surface material wash away the adhesive property that the water yield can not only reflect ground surface material (pitch, cement) and gather materials, also can reflect the water resistant performance of flushing of ground surface material.Domestic scholars has carried out relevant research to the infringement of flowing pressure to bituminous pavement, existing road material washout test instrument, mainly comprise external rotating brush, shaking table, and the ground surface material flowing pressure test unit of Ge great universities and colleges design, but above-mentioned test unit all can not measure and wash away the water yield, be not easy to judge that the barrier properties of test specimen and drainage are with the change procedure washed away.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, a kind of measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield is provided, the positive reaction water that this hydrodynamic pressure scouring test machine can measure one-period washes away the water yield and unidirectional dynamic water washes away the water yield, and metric results is accurate, realisticly wash away the water yield.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is:
A kind of measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield, comprise close test case and high-pressure hydraulic pump, pipeline is provided with between described close test case and high-pressure hydraulic pump, described pipeline comprises dynamic water loaded tubes and dynamic water unloading pipe, described dynamic water loaded tubes one end is connected with high-pressure hydraulic pump, the other end is connected with close test case, and described dynamic water loaded tubes is provided with water supply electromagnetic valve; Between the water supply electromagnetic valve that described dynamic water unloading pipe one end is connected to dynamic water loaded tubes and close test case, the other end is provided with for measuring the metering valve and the first metering water tank that wash away the water yield.
Described dynamic water unloading pipe is provided with backwater solenoid valve in metering valve front end, and be provided with water return pipeline in metering valve rear end, described water return pipeline is connected with the water storage device of high-pressure hydraulic pump, and described water return pipeline is provided with metering stop valve.
Ground surface material test specimen and at least one backward erosion cylinder is installed with in described close test case, the inner chamber of close test case is divided into the forward flush chamber on top and the backward erosion chamber of bottom by described ground surface material test specimen and backward erosion cylinder, the upper end closed of described backward erosion cylinder and lower end are communicated with backward erosion chamber, and described forward flush chamber is provided with the dynamic water entrance be connected with dynamic water loaded tubes.
Described close test case comprises casing, is divided into upper cover plate and the lower cover at the upper and lower two ends of casing, and the bottom of described casing is provided with drainpipe, and described drainpipe is provided with draining valve, and described draining valve rear end is provided with the second metering water tank.
Described drainpipe is provided with the discharge pressure table for measuring reverse flowing pressure.
Described upper cover plate is provided with suspension ring and the top pressure table for measuring forward flowing pressure.
Described close test case is provided with temperature regulating device, and described temperature regulating device comprises refrigerating plant and heat-exchange device, and described refrigerating plant and heat-exchange device are connected with close test case respectively.
Compared with prior art, the invention has the advantages that:
The measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield of the present invention, be provided with dynamic water unloading pipe, when the positive reaction water ground surface material test specimen in close test case being completed to one-period washes away, open the metering valve on dynamic water unloading pipe, the water flowed out through metering valve falls into the first metering water tank, the total Water flowed out through metering valve is measured by the first metering water tank, what this part water yield was that this dynamic water washes away washes away the water yield, its structure is simple, easy to operate, achieve the metering that road pavement material hydrodynamic pressure scouring test washes away the water yield, enrich the function of ground surface material hydrodynamic pressure scouring test machine, the permeability rate of ground surface material test specimen can be calculated accurately, accurately to judge that the barrier properties of ground surface material test specimen and drainage are with the change procedure washed away.The present invention is provided with water return pipeline in metering valve rear end further, water return pipeline is connected with the supply tank of high-pressure hydraulic pump, water return pipeline is provided with metering stop valve, if do not need metering to wash away the water yield after completing positive reaction water washout test, then metering valve can be closed, open metering stop valve, by water return pipeline, the water in close test case is drained back to the supply tank of high-pressure hydraulic pump.The present invention is provided with drainpipe in the bottom of casing further, drainpipe is provided with draining valve, draining valve rear end is provided with the second metering water tank, when carrying out top-down unidirectional washout test to the ground surface material test specimen in close test case, draining valve can be opened, measure the water yield of discharging through this draining valve by the second metering water tank, thus realize in unidirectional washout test the metering of flush water amount.The present invention is provided with discharge pressure table further on drainpipe, can measure reverse flowing pressure in experimentation, be provided with top pressure table, can measure forward flowing pressure in experimentation at upper cover plate.The present invention carries out real-time monitoring to the water temperature in close test case by arranging temperature regulating device further, with the souring of dynamic water road pavement material test specimen under simulating different water temperature condition.The present invention can be applicable to the ground surface material test specimen of various mix type, all can test, the impact of energy simulate load, temperature, hydraulic pressure three factor road pavement materials for hitting the on-the-spot core in real test specimen, gyratory compaction test specimen or road surface.
Accompanying drawing explanation
Fig. 1 be the present invention the first wash away the structural representation of metering method.
Fig. 2 is the structural representation that the second of the present invention washes away metering method.
Fig. 3 is the structural representation of close test case of the present invention.
Fig. 4 is the cross-sectional view of close test case of the present invention.
In figure, each label represents:
1, close test case; 11, positioning tube; 12, forward flush chamber; 121, dynamic water entrance; 13, backward erosion chamber; 14, vent valve; 15, casing; 151, drainpipe; 152, draining valve; 153, discharge pressure table; 154, the second metering water tank; 16, upper cover plate; 161, suspension ring; 162, top pressure table; 17, lower cover; 2, high-pressure hydraulic pump; 21, supply tank; 3, refrigerating plant; 4, pipeline; 41, dynamic water loaded tubes; 411, water supply electromagnetic valve; 42, dynamic water unloading pipe; 421, backwater solenoid valve; 422, metering valve; 423, stop valve is measured; 424, the first metering water tank; 425, water return pipeline; 5, ground surface material test specimen; 6, control system; 7, heat-exchange device; 8, backward erosion cylinder; 81, cylindrical shell; 82, seal cover board.
Embodiment
Fig. 1 to Fig. 4 shows a kind of measurable ground surface material hydrodynamic pressure scouring test machine embodiment of washing away the water yield of the present invention, this testing machine comprises close test case 1, high-pressure hydraulic pump 2, temperature regulating device and control system 6, ground surface material test specimen 5 and at least one backward erosion cylinder 8 is installed with in close test case 1, pipeline 4 is provided with between close test case 1 and high-pressure hydraulic pump 2, pipeline 4 comprises dynamic water loaded tubes 41 and dynamic water unloading pipe 42, one end of dynamic water loaded tubes 41 is connected with high-pressure hydraulic pump 2, the other end is connected with close test case 1, dynamic water loaded tubes 41 is provided with water supply electromagnetic valve 411, between the water supply electromagnetic valve 411 that one end that dynamic water unloads pipe 42 is connected to dynamic water loaded tubes 41 and close test case 1, the other end is provided with for measuring the metering valve 422 and the first metering water tank 424 that wash away the water yield.When the positive reaction water ground surface material test specimen 5 in close test case 1 being completed to one-period washes away, open the metering valve 422 on dynamic water unloading pipe 42, the water flowed out through metering valve 422 falls into the first metering water tank 424, the total Water flowed out through metering valve 422 is measured by the first metering water tank 424, what this part water yield was that this dynamic water washes away washes away the water yield, the permeability rate of ground surface material test specimen 5 can be calculated accurately, accurately to judge that the barrier properties of ground surface material test specimen 5 and drainage are with the change procedure washed away by washing away the water yield.
In the present embodiment, dynamic water unloading pipe 42 is provided with backwater solenoid valve 421 and water return pipeline 425, backwater solenoid valve 421 is positioned at the front end of metering valve 422, water return pipeline 425 is positioned at the rear end of metering valve 422, water return pipeline 425 is connected with the supply tank 21 of high-pressure hydraulic pump 2, water return pipeline 425 is provided with metering stop valve 423, if do not need metering to wash away the water yield after completing positive reaction water washout test, then can close metering valve 422, open metering stop valve 423, by water return pipeline 425, the water in close test case 1 is drained back to the supply tank 21 of high-pressure hydraulic pump 2.
In the present embodiment, a backward erosion cylinder 8 is provided with in close test case 1, the inner chamber of close test case 1 is divided into the forward flush chamber 12 on top and the backward erosion chamber 13 of bottom by ground surface material test specimen 5 and backward erosion cylinder 8, backward erosion cylinder 8 comprises cylindrical shell 81 and seal cover board 82, cylindrical shell 81 is fixed in the positioning tube 11 of close test case 1, seal cover board 82 is for the upper end of closed cylinder 81, cylindrical shell 81 is only communicated with backward erosion chamber 13, and forward flush chamber 12 is provided with the dynamic water entrance 121 be connected with dynamic water loaded tubes 41.During simulated roadway actual conditions experiment of the present invention, the water filling of driven water entrance 121, the upper surface of ground surface material test specimen 5 applies flowing pressure, because water can only flow into backward erosion chamber 13 from ground surface material test specimen 5, by backward erosion cylinder 8, water is pressed at the lower surface of ground surface material test specimen 5 again during release, road pavement material test specimen 5 forms dynamic water circulation and washes away, thus effectively checks the anti-water damage ability of ground surface material.
In the present embodiment, close test case 1 comprises casing 15, upper cover plate 16 and lower cover 17, upper cover plate 16 and lower cover 17 are individually fixed in the two ends up and down of casing 15, the bottom of casing 15 is provided with drainpipe 151, drainpipe 151 is provided with draining valve 152, draining valve 152 rear end is provided with the second metering water tank 154, when carrying out top-down unidirectional washout test to the ground surface material test specimen 5 in close test case 1, draining valve 152 can be opened, the water yield of discharging through this draining valve 152 is measured by the second metering water tank 154, thus realize in unidirectional washout test the metering of flush water amount.Upper cover plate 16 is provided with suspension ring 161, top pressure table 162 and vent valve 14, and top pressure table 162 washes away flowing pressure for the forward measuring forward flush chamber 12, the setting party of suspension ring 161 open or closed casing 15 with hanging device upper cover plate 16 of slinging.
Close test case 1 of the present invention is provided with temperature regulating device, and temperature regulating device comprises refrigerating plant 3 and heat-exchange device 7, and refrigerating plant 3 is connected with close test case 1 respectively with heat-exchange device 7.Close test case 1 is provided with temperature sensor, the temperature of water in close test case 1 is passed to control system 6 in real time, water temperature in control system 6 pairs of close test casees 1 carries out real-time monitoring, to simulate the souring of dynamic water road pavement material test specimen 5 under different water temperature, constant temperature.
The present invention has following two kinds to wash away mode, and two kinds of modes of washing away all have corresponding dynamic water metering method:
The first washes away metering method: as shown in Figure 1, and the positive reaction water being measured one-period by metering valve 422 washes away the water yield.
(1) close draining valve 152, open high-pressure hydraulic pump 2 and water supply electromagnetic valve 411, water-filling in casing 15, when treating that water level arrives about positioning tube 11 mid-height, closedown high-pressure hydraulic pump 2 and water supply electromagnetic valve 411 stop water filling.
(2) lay the backward erosion cylinder 8 that ground surface material test specimen 5 and upper end have been closed, then fill water to forward flush chamber 12, with upper cover plate 16 closed box 15, now in backward erosion cylinder 8, there is a certain amount of air.
(3) leave standstill a period of time after the air of ground surface material test specimen 5 is slowly discharged, open vent valve 14 and the air of forward flush chamber 12 is discharged, close vent valve 14.
(4) close metering stop valve 423, open metering valve 422, and place the first metering water tank 424 at the water outlet of metering valve 422.
(5) control system 6 arranges and washes away frequency, open high-pressure hydraulic pump 2 and water supply electromagnetic valve 411, close backwater solenoid valve 421 simultaneously, driven water entrance 121 injection pressure water, road pavement material test specimen 5 pressurizes, water to backward erosion chamber 13, makes the air of backward erosion cylinder 8 inner chamber by compress energy storage by the space seepage flow in ground surface material test specimen 5.
(6) after top pressure table 162 detects that pressure-loaded has arrived setting value, close water supply electromagnetic valve 411, open backwater solenoid valve 421, carry out release in close test case 1, the air of backward erosion cylinder 8 inner chamber expands, under pressure, the water road pavement material test specimen 5 in backward erosion chamber 13 carries out backward erosion, and water enters forward flush chamber 12 through ground surface material test specimen 5, and through dynamic water unloading pipe 42, flowed out by metering valve 422, enter the first metering water tank 424.
(7) measure the water in the first metering water tank 424, the positive reaction water that can obtain one-period washes away the water yield.
The second washes away metering method: as shown in Figure 2, and that measures unidirectional scouring experiment by draining valve 152 washes away the water yield.
(1) first ground surface material test specimen 5 and backward erosion cylinder 8 are installed, with upper cover plate 16 closed box 15, then open high-pressure hydraulic pump 2 and water supply electromagnetic valve 411, close backwater solenoid valve 421 simultaneously, fill water to forward flush chamber 12.
(2) open draining valve 152, the second metering water tank 154 is placed at the freeing port place of drainpipe 151; Standing a period of time, after the air of ground surface material test specimen 5 is slowly discharged, opens vent valve 14 and is discharged by the air of forward flush chamber 12, close vent valve 14.
(3) control system 6 arranges and washes away frequency and after washing away number of times, open water supply electromagnetic valve 411, road pavement material test specimen 5 carries out forward and washes away, dynamic water is in the process of forward flush chamber 12 Inner eycle pressurization release, press the effect of water at height under, water penetrates into backward erosion chamber 13 through the space of ground surface material test specimen 5 inside, circulation pressurization, water constantly infiltrates into backward erosion chamber 13, until reach setting wash away parameter.
(4) close water supply electromagnetic valve 411 after off-test, wait for a period of time, until the water that forward flush chamber 12 infiltrates through backward erosion chamber 13 all flows into the second metering water tank 154 from drainpipe 151.
(5) measure the water in the second metering water tank 154, what namely obtain unidirectional scouring experiment washes away the water yield.
Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (6)
1. the measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield, comprise close test case (1) and high-pressure hydraulic pump (2), pipeline (4) is provided with between described close test case (1) and high-pressure hydraulic pump (2), it is characterized in that: described pipeline (4) comprises dynamic water loaded tubes (41) and dynamic water unloading pipe (42), described dynamic water loaded tubes (41) one end is connected with high-pressure hydraulic pump (2), the other end is connected with close test case (1), and described dynamic water loaded tubes (41) is provided with water supply electromagnetic valve (411), between the water supply electromagnetic valve (411) that described dynamic water unloading pipe (42) one end is connected to dynamic water loaded tubes (41) and close test case (1), the other end is provided with for measuring the metering valve (422) and the first metering water tank (424) that wash away the water yield, ground surface material test specimen (5) and at least one backward erosion cylinder (8) is installed with in described close test case (1), the inner chamber of close test case (1) is divided into the forward flush chamber (12) on top and the backward erosion chamber (13) of bottom by described ground surface material test specimen (5) and backward erosion cylinder (8), the upper end closed of described backward erosion cylinder (8) and lower end are communicated with backward erosion chamber (13), described forward flush chamber (12) is provided with the dynamic water entrance (121) be connected with dynamic water loaded tubes (41).
2. the measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield according to claim 1, it is characterized in that: described dynamic water unloading pipe (42) is provided with backwater solenoid valve (421) in the front end of metering valve (422), water return pipeline (425) is provided with in the rear end of metering valve (422), described water return pipeline (425) is connected with the supply tank (21) of high-pressure hydraulic pump (2), and described water return pipeline (425) is provided with metering stop valve (423).
3. the measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield according to claim 1, it is characterized in that: described close test case (1) comprises casing (15), is divided into upper cover plate (16) and the lower cover (17) at the upper and lower two ends of casing (15), the bottom of described casing (15) is provided with drainpipe (151), described drainpipe (151) is provided with draining valve (152), and described draining valve (152) rear end is provided with the second metering water tank (154).
4. the measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield according to claim 3, is characterized in that: described drainpipe (151) is provided with the discharge pressure table (153) for measuring reverse flowing pressure.
5. the measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield according to claim 3, is characterized in that: described upper cover plate (16) is provided with suspension ring (161) and the top pressure table (162) for measuring forward flowing pressure.
6. the measurable ground surface material hydrodynamic pressure scouring test machine washing away the water yield according to claim 1 and 2, it is characterized in that: described close test case (1) is provided with temperature regulating device, described temperature regulating device comprises refrigerating plant (3) and heat-exchange device (7), and described refrigerating plant (3) is connected with close test case (1) respectively with heat-exchange device (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310388316.8A CN103439478B (en) | 2013-08-30 | 2013-08-30 | Pavement material dynamic water pressure washing tester capable of metering washing water amount |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310388316.8A CN103439478B (en) | 2013-08-30 | 2013-08-30 | Pavement material dynamic water pressure washing tester capable of metering washing water amount |
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| CN103439478A CN103439478A (en) | 2013-12-11 |
| CN103439478B true CN103439478B (en) | 2015-07-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106092784B (en) * | 2016-05-31 | 2018-08-21 | 长安大学 | A kind of constant speed carries formula load flowing pressure scouring instrument and its application method surely |
| CN111289198B (en) * | 2020-02-17 | 2021-10-26 | 河南理工大学 | Improved generation similar material three-dimensional simulation experiment support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2554620Y (en) * | 2002-06-18 | 2003-06-04 | 长沙交通学院公路工程试验检测中心 | Road material washout test machine |
| CN101210870B (en) * | 2007-12-24 | 2010-11-03 | 哈尔滨工业大学 | Test device for asphalt mixture resisting moving water scouring |
| CN101216401B (en) * | 2008-01-09 | 2010-12-15 | 华南理工大学 | Asphalt mixture hydrodynamic pressure scouring test apparatus |
| CN201196646Y (en) * | 2008-04-23 | 2009-02-18 | 张宏超 | Environment simulator for asphalt mixture hydrosphere stability test |
| CN101907555B (en) * | 2010-07-20 | 2012-03-07 | 申爱琴 | Multi-function asphalt mixture dynamic water penetration tester |
| CN102706760B (en) * | 2012-06-26 | 2015-06-10 | 长安大学 | Bituminous mixture flowing water scouring instrument |
| CN203414464U (en) * | 2013-08-30 | 2014-01-29 | 长沙理工大学 | Dynamic water pressure pavement material washout test device capable of metering washing water quantity |
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