CN106092868B - A kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure - Google Patents
A kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure Download PDFInfo
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- CN106092868B CN106092868B CN201610507171.2A CN201610507171A CN106092868B CN 106092868 B CN106092868 B CN 106092868B CN 201610507171 A CN201610507171 A CN 201610507171A CN 106092868 B CN106092868 B CN 106092868B
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- 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
- G01N17/002—Test chambers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a kind of experimental provisions for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure, including road structure test sample-producing die, road structure water-salt-temperature environmental simulation case and deformation monitoring temperature control system, the cabinet of the road structure water-salt-temperature environmental simulation case includes main framing and secondary skeleton, heat preserving and insulating material is equipped between the main framing and secondary skeleton, box house is equipped with temperature sensor and water level sensor；Box house is a small-sized water tank, and cabinet is equipped with water injection hole, water level monitoring hole and drain valve；Box house is equipped with the support bracket for placing sample mould.The present invention can directly simulate the process and mechanism development experimental study that the effect of Various Seasonal temperature environment salinized soil water salt environment is deformed destruction to road structure.Time and the cost for largely reducing prototype monitoring test, save human and material resources and financial resources；Meanwhile, it is capable to the various operating conditions of indoor simulation, convenient for the work that conducts a research.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, specifically, being related to a kind of simulation salinized soil environment road structure layer
The experimental provision of Mechanism of Deformation And Failure.
Background technique
In recent years, the strategy to develop western regions of Southern Xinjiang Uygur Autonomous Region area response country has been carried out a large amount of
Transportation Infrastructure Construction activity, Xinjiang road traffic host main line and branch line are basically completed, and walk full boundary peasants and herdsmen
The world is seen at door out, has many areas to also set up economic development zone, accelerates the socio-economic development in Xinjiang.But 2012-
2013 annual Xinjiang South Sinkiang road disease investigation reports, the road that reflection Xinjiang South Sinkiang region 2000-2010 is largely built are handed over
Logical engineering it is all different degrees of deformation failure has occurred.As South Sinkiang Railway Kuerle to Keshen section, 314 line Aksu of national highway to Ah
Scheme assorted section, provincial highway S207 line Aksu to alura section (before reconstruction), S219 line, S217 line, S218 line, 315 line of national highway be located at
The part way in South Sinkiang region causes the deformation failure of roadbed because of chloride salinized soil and sulfate-salinized soil；The newly-built city in South Sinkiang two
The urban road of city Alar City and Tumushuke City is after build up, and the salt for being subject to salinized soil is swollen-frost-heaving deformation destroys；South
The water engineering facility of boundary also it is different degrees of by salt marsh earth salt it is swollen-frost heaving failure, seriously affected the operation of engineering and made
With.South Sinkiang salinized soil is mainly shown as the harm of highway communication engineering: sulfate-salinized soil is broken to the expansion displacement of subgrade and pavement
It is bad；Chloride salinized soil destroys the collapsible settement of subgrade and pavement；The frost boiling of Salty Soil Subgrade caused by Seasonal Freeze-thaw Soils destroys；
Sulfate and chloride salt in salinized soil with corrosiveness is to the corrosion failure of concrete and metal component.
Xinjiang is China maximum province of salinized soil distribution area, and the Area distribution area of Xinjiang salinized soil belongs to South Sinkiang most
Greatly, a large amount of road is all by the infringement of salinized soil, along with cities and towns distance is very long, inconvenient maintenance and at high cost.Using this
Experimental provision can study simulating lab test, can carry out salinized soil environment moisture and salt regime and variation of ambient temperature produces
Raw drying and watering cycle effect and salt it is swollen-frost heave action under road structure layer Mechanism of Deformation And Failure research, to process of deformation and failure
It is controled and monitored, road structure model, optimization road structure material and subgrade and pavement durability is established according to experimental data
Engineering design method, improve road salt resistance it is swollen-frost-heaving deformation and water salt drying and watering cycle destroy durability.The exploitation of the experimental provision
It will-frost heave engineering project disaster catastrophe mechanism swollen to research salt marsh earth salt and salinized soil ambient water salt drying and watering cycle effect catastrophe mechanism tool
There are regional study particularity and novelty, by the engineering structure to Xinjiang South Sinkiang region salinized soil environment because water salt drying and watering cycle is made
With with salt it is swollen-environmental activities such as frost heave action caused by engineering project disaster and Study of Prevention Technology there is important basic research and work
Journey practical value.
Existing salt marsh earth salt it is swollen-frost-heaving deformation engineering project disaster mechanism study in, there is no effective experimental simulation system
The drying and watering cycle effect and salt generate to the variation of moisture and salt regime and environment temperature in salinized soil environment is swollen-and frost heave action is to road
The process of deformation and failure that line structure layer generates effectively is controled and monitored.
Summary of the invention
It is an object of the invention to overcome defect existing for above-mentioned technology, a kind of simulation salinized soil environment road structure is provided
The experimental provision of layer Mechanism of Deformation And Failure, to solve road structure water-salt-temperature environmental simulation and control problem, to the salt of simulation
In stain dirt road base seasonal temperature and water-salt migration environment water salt drying and watering cycle effect and salt it is swollen-frost heave action is to road structure
Process of deformation and failure be monitored and control.
Itself the specific technical proposal is:
A kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure, including road structure sample system
Make mold, road structure water-salt-temperature environmental simulation case and deformation monitoring temperature control system, the road structure water-salt-temperature environment
The cabinet 1 of simulation box includes main framing 2 and secondary skeleton 3, and the main framing 2 is welded using the angle bar of 4 × 4mm, the pair skeleton 3
It is welded with the angle bar of 3 × 3mm, heat preserving and insulating material 4 is equipped between the main framing 2 and secondary skeleton 3, is equipped with temperature inside cabinet 1
Spend sensor 5 and water level sensor 6；It is a small-sized water tank inside cabinet 1, cabinet 1 is equipped with water injection hole 8, water level monitoring hole 15
With drain valve 9；The support bracket 10 for placing sample mould is equipped with inside cabinet 1, the sample top surface placed in cabinet 1 is in environment mould
The seasonal temperature environment connection simulated in quasi- case upper end surface and environmental test chamber, the environmental test chamber are separately configured
The upper surface rest part thermal insulation material of large-scale environmental test simulation system, cabinet 1 is closed, the setting of 1 upper surface surrounding of cabinet
Sensor fixes bracket 7, connects controller 12 to fixed temperature sensor, the bottom of the environmental chamber is equipped with heating plate
17；
Sample mould can be placed inside experimental provision, also can directly place sample 19, directly placement sample 19 when must be
Backing plate is placed on support bracket 10, back plate sizes are suitable with 1 inside dimension of cabinet；
The sample mould uses glass steel material, and sample mould designs three kinds, so as to analogue observation difference work condition environment
The process of deformation and failure of Salty Soil Subgrade structure sheaf, mold is first is that simulation nature is lauched salt infiltrating brokenly to road structure layer
It is bad to act on, it is opened wide at the top of mold one, remaining five face is equipped with water salt and infiltrates channel 13；Mold is second is that simulated roadway two sides water salt enters
The destruction to roadbed is seeped, two two sides of mold are equipped with water salt and infiltrate channel 13；Mold is third is that simulated roadway two sides greenbelt fills
Irrigate influence of the water seepage effect to road structure layer stability, three top two sides fluted 14 of mold are equipped with water inside mold three
Salting liquid area 11 and water salt penetration area 18, three top two sides of mold open up seepage channel 13.
Further, the support bracket 10 is the high tensile metal material of saline-alkaline corrosion-resistant.
Further, the support bracket 10 is apart from road structure water-salt-temperature environmental simulation bottom portion 10cm.
Further, the sectional dimension of the support bracket 10 is Φ 10mm.
Further, the main framing 2 of the cabinet 1 and secondary skeleton 3 are sealed using saline-alkaline corrosion-resistant alloy material.
Further, the two sides of the cabinet 1 are equipped with handle 16.
Compared with prior art, the invention has the benefit that
The experimental provision of analog study salinized soil environment road structure Mechanism of Deformation And Failure of the present invention becomes mainly by intelligence
Shape monitors temperature control system to complete to specimen temperature-deformation monitoring, and the control to water salt environment temperature in environmental chamber
System.Ambient temperature locating for road structure water-salt-temperature environmental simulation case then simulates seasonal temperature by environmental test chamber
Environment；The intelligent deformation monitoring temperature control system of configuration can be to the examination in the sample mould using the production of transparent visual material
The deformation of sample and damage and failure process are observed in real time.
The present invention can directly simulate the effect of Various Seasonal temperature environment salinized soil water salt environment and generate change to road structure
The process and mechanism that shape is destroyed carry out experimental study.Time and the cost for largely reducing prototype monitoring test, save human and material resources
And financial resources；Meanwhile, it is capable to the various operating conditions of indoor simulation, convenient for the work that conducts a research.
Detailed description of the invention
Fig. 1 is the top view of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure, A table
Show cabinet outer length；B indicates cabinet external width；A indicates device box inner width；B indicates box house length；
Fig. 2 is the side elevational view of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure, H
For the height of device box；
Fig. 3 is the front elevation view of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure；
Fig. 4 is the 3-D view of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure；
Fig. 5 is bowing for the mold one of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
View；
Fig. 6 be the present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure experimental provision mold one just
Elevation；
Fig. 7 is the side of the mold one of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Elevation；
Fig. 8 is the three of the mold one of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Dimensional view；
Fig. 9 is bowing for the mold two of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
View；
Figure 10 is the mold two of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Front elevation view；
Figure 11 is the mold two of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Side elevational view；
Figure 12 is the mold two of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
3-D view；
Figure 13 is the mold three of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Top view；
Figure 14 is the mold three of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Side elevational view；
Figure 15 is the mold three of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Front elevation view；
Figure 16 is the mold three of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
3-D view；
Figure 17 is the environmental simulation of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Case sectional view one；
Figure 18 is the environmental simulation of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Case sectional view two；
Figure 19 is the environmental simulation of the experimental provision of present invention simulation salinized soil environment road structure layer Mechanism of Deformation And Failure
Case sectional view three.
Specific embodiment
Technical solution of the present invention is described in more detail with specific implementation with reference to the accompanying drawing.
Referring to figs. 1 to 19, a kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure, including road
Based structures test sample-producing die, road structure water-salt-temperature environmental simulation case and deformation monitoring temperature control system, the road structure
Water-salt-temperature environmental simulation case cabinet 1 includes main framing 2 and secondary skeleton 3, and the main framing 2 is welded using the angle bar of 4 × 4mm
It connects, the pair skeleton 3 is welded with the angle bar of 3 × 3mm, is equipped with heat preserving and insulating material 4, case between the main framing 2 and secondary skeleton 3
Temperature sensor 5 and water level sensor 6 are equipped with inside body 1；A small-sized water tank inside cabinet 1, cabinet 1 be equipped with water injection hole 8,
Water level monitoring hole 15 and drain valve 9；The support bracket 10 for placing sample mould, the sample placed in cabinet 1 are equipped with inside cabinet 1
The seasonal temperature environment connection that top surface is simulated in environmental chamber upper end surface and environmental test chamber, the environmental test chamber
It is the large-scale environmental test simulation system being separately configured, the upper surface rest part thermal insulation material of cabinet 1 is closed, on cabinet 1
The fixed bracket 7 of sensor is arranged in end face surrounding, connects controller 12, the bottom of the environmental chamber to fixed temperature sensor
Portion is equipped with heating plate 17；
Sample mould can be placed inside experimental provision, also can directly place sample 19, directly placement sample 19 when must be
Backing plate is placed on support bracket 10, back plate sizes are suitable with 1 inside dimension of cabinet；
The sample mould uses glass steel material, and sample mould designs three kinds, so as to analogue observation difference work condition environment
The process of deformation and failure of Salty Soil Subgrade structure sheaf, mold is first is that simulation nature is lauched salt infiltrating brokenly to road structure layer
It is bad to act on, it is opened wide at the top of mold one, remaining five face is equipped with water salt and infiltrates channel 13；Mold is second is that simulated roadway two sides water salt enters
The destruction to roadbed is seeped, two two sides of mold are equipped with water salt and infiltrate channel 13；Mold is third is that simulated roadway two sides greenbelt fills
Irrigate influence of the water seepage effect to road structure layer stability, three top two sides fluted 14 of mold are equipped with water inside mold three
Salting liquid area 11 and water salt penetration area 18, three top two sides of mold open up seepage channel 13.
The support bracket 10 is the high tensile metal material of saline-alkaline corrosion-resistant.
The support bracket 10 is apart from road structure water-salt-temperature environmental simulation bottom portion 10cm.
The sectional dimension of the support bracket 10 is Φ 10mm.
The two sides of the cabinet 1 are equipped with handle 16.
The main framing 2 of the cabinet 1 and secondary skeleton 3 are sealed using saline-alkaline corrosion-resistant alloy material.
The present invention in the specific application process, is completed mainly by intelligent deformation monitoring temperature control system to specimen temperature-
The monitoring of deformation, and the control to water salt environment temperature in environmental chamber.Road structure water-salt-temperature environmental simulation case institute
The ambient temperature at place is then simulated seasonal temperature environment by environmental test chamber；The intelligent deformation monitoring temperature control system of configuration
System can deformation to the sample in the sample mould using the production of transparent visual material and damage and failure process carry out it is real-time
Observation.
The foregoing is only a preferred embodiment of the present invention, the scope of protection of the present invention is not limited to this, it is any ripe
Know those skilled in the art within the technical scope of the present disclosure, the letter for the technical solution that can be become apparent to
Altered or equivalence replacement are fallen within the protection scope of the present invention.
Claims (6)
1. a kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure, which is characterized in that including roadbed
Structure test sample-producing die, road structure water-salt-temperature environmental simulation case and deformation monitoring temperature control system, the road structure water-
Salt-temperature environmental simulation case cabinet (1) includes main framing (2) and secondary skeleton (3), and the main framing (2) uses the angle of 4 × 4mm
Iron welding, the pair skeleton (3) are welded with the angle bar of 3 × 3mm, are equipped with thermal insulation separation between the main framing (2) and secondary skeleton (3)
Hot material (4), cabinet (1) is internal to be equipped with temperature sensor (5) and water level sensor (6)；It is a miniature water inside cabinet (1)
Case, cabinet (1) are equipped with water injection hole (8), water level monitoring hole (15) and drain valve (9)；It is equipped with inside cabinet (1) and places sample mold
The support bracket (10) of tool, the interior sample top surface placed of cabinet (1) is in environmental chamber upper end surface and environmental test chamber internal model
Quasi- seasonal temperature environment connection, the environmental test chamber are the large-scale environmental test simulation system being separately configured, cabinet (1)
Upper surface rest part thermal insulation material it is closed, it is fixed bracket (7) that cabinet (1) upper surface surrounding is arranged sensor, to solid
Determine temperature sensor connection controller (12), the bottom of the environmental chamber is equipped with heating plate (17)；
Sample mould can be placed inside experimental provision, also can directly be placed sample (19), directly placement sample (19) when must be
Backing plate is placed on support bracket (10), back plate sizes are suitable with cabinet (1) inside dimension；
The sample mould uses glass steel material, and sample mould designs three kinds, so as to analogue observation difference work condition environment salt marsh
The process of deformation and failure of dirt road based structures layer, mold infiltrate destruction work to road structure layer first is that simulation nature is lauched salt
With unlimited at the top of mold one, remaining five face is equipped with water salt and infiltrates channel (13)；Mold is second is that simulated roadway two sides water salt infiltrates
Destruction to roadbed, two two sides of mold are equipped with water salt and infiltrate channel (13)；Mold is third is that simulated roadway two sides greenbelt fills
Influence of the water seepage effect to road structure layer stability is irrigate, three top two sides of mold are fluted (14), are equipped with inside mold three
Water salting liquid area (11) and water salt penetration area (18), three top two sides of mold open up seepage channel (13).
2. the experimental provision of simulation salinized soil environment road structure layer Mechanism of Deformation And Failure according to claim 1, special
Sign is that the support bracket (10) is the high tensile metal material of saline-alkaline corrosion-resistant.
3. the experimental provision of simulation salinized soil environment road structure layer Mechanism of Deformation And Failure according to claim 1, special
Sign is that the support bracket (10) is apart from road structure water-salt-temperature environmental simulation bottom portion 10cm.
4. the experimental provision of simulation salinized soil environment road structure layer Mechanism of Deformation And Failure according to claim 1, special
Sign is that the sectional dimension of the support bracket (10) is Φ 10mm.
5. the experimental provision of simulation salinized soil environment road structure layer Mechanism of Deformation And Failure according to claim 1, special
Sign is that the main framing (2) of the cabinet (1) and secondary skeleton (3) are sealed using saline-alkaline corrosion-resistant alloy material.
6. the experimental provision of simulation salinized soil environment road structure layer Mechanism of Deformation And Failure according to claim 1, special
Sign is that the two sides of the cabinet (1) are equipped with handle (16).
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| CN201610507171.2A CN106092868B (en) | 2016-06-24 | 2016-06-24 | A kind of experimental provision for simulating salinized soil environment road structure layer Mechanism of Deformation And Failure |
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Cited By (1)
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| CN107389490A (en) * | 2017-08-15 | 2017-11-24 | 塔里木大学 | A kind of disintegration of test unsaturated soil, the experimental rig of humidifying and method |
| CN112858152B (en) * | 2021-01-15 | 2023-05-12 | 东南大学 | Device for simulating sulfate corrosion of cement-based materials in dry-cold and dry-hot environments |
| CN113189308B (en) * | 2021-05-11 | 2022-04-01 | 西安建筑科技大学 | Deformation testing device for saline soil foundation |
| CN113866080B (en) * | 2021-09-28 | 2023-12-05 | 太原理工大学 | Salt corrosion damage test device and method for simulating porous medium material |
| CN114136871A (en) * | 2021-11-24 | 2022-03-04 | 国家电网有限公司 | Real-time monitoring device and method for concrete durability in dry-wet cycle process of saline soil |
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