CN104655441B - A kind of tunnel model test stand - Google Patents
A kind of tunnel model test stand Download PDFInfo
- Publication number
- CN104655441B CN104655441B CN201510052099.4A CN201510052099A CN104655441B CN 104655441 B CN104655441 B CN 104655441B CN 201510052099 A CN201510052099 A CN 201510052099A CN 104655441 B CN104655441 B CN 104655441B
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- pressurization
- model
- support
- tunnel
- tunnel model
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 14
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 12
- 230000003319 supportive effect Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 125000004122 cyclic group Chemical group 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention provides a kind of tunnel model test stand, including stand main body, pressurization part and tunnel model, the pressurization part is placed in the stand main body, and the tunnel model is fixed on the inner chamber of the pressurization part by model support unit, and the side wall of the pressurization part is provided with medium pipeline.The test-bed of the present invention is loaded by the gas/liquid pressure of confined space to tunnel model, while can change the gas liquid of pressurization, can simulate the coupling destroyed under tunnel confined pressure and corrosive environment to tunnel lining structure.
Description
Technical field
The present invention relates to tunnels mimic technical field, and in particular to a kind of tunnel model test stand.
Background technology
Current tunnel model test stand by equivalent material simulating tunnel lining structure and country rock, by jack plus
Carry the destructive process and damage -form of observation country rock and tunnel structure.But current model test tunnel is usually in nothing
In the environment of corrosion, therefore the coupling that corrosive medium destroys with confined pressure to tunnel lining structure, the examination of gained can not be considered
Influence of the corrosive environment to tunnel-liner material can not be considered by testing result；In addition, added using the preloading of sandstone filler and jack
The mode of pressure, load mode is more single, and loading procedure needs more prolonged preloading filler, loading procedure it is time-consuming compared with
It is long, and the clear material process after off-test is also very cumbersome, largely influences the service efficiency of testing equipment.
The content of the invention
In view of this, the present invention provides a kind of tunnel model test stand, it is intended to the side loaded by using liquid/gas body
Formula, study the mechanical characteristic of the different section tunnel lining structure under solution corrosion and tunnel confined pressure coupling.
The technical solution adopted by the present invention is specially：
A kind of tunnel model test stand, including stand main body, pressurization part and tunnel model, the pressurization part are placed in described
In stand main body, the tunnel model is fixed on the inner chamber of the pressurization part, the side of the pressurization part by model support unit
Wall is provided with medium pipeline.
In above-mentioned tunnel model test stand, the stand main body includes pedestal, support frame and reaction frame, the support
The pedestal is placed on, the counter-force is placed on the top of support frame as described above, and the first end of the pressurization part is placed in the support
Frame, the second end of the pressurization part are placed in the reaction frame.
In above-mentioned tunnel model test stand, it is single that the pressurization part includes pedestal, pressurization adjustment unit and pressurization monitoring
Member, the pedestal include pressurized cylinder and closure, and the closure is located at the top of the pressurized cylinder, the pressurization adjustment unit
Through the closure；The first end of the pressurization adjustment unit is fixed on the reaction frame, the pressurization adjustment unit
Second end contacts with the inwall of the pressurized cylinder.
In above-mentioned tunnel model test stand, the pressurization adjustment unit includes piston component and jack, the work
Plug assembly is connected with the jack；The piston component includes piston rod and piston, the piston rod and the piston phase
Connection；Wherein：The piston rod by piston rod set through the closure, the periphery of the piston and the pressurized cylinder
Inwall contacts, and the piston rod set is connected with the centre bore matching of the closure；The piston rod is put provided with oil fuel tube.
In above-mentioned tunnel model test stand, the pressurization monitoring unit includes measuring probe, probe lead wire and pressurization
Lead is measured, the probe lead wire passes through the piston component, and the first end of the probe lead wire stretches out piston rod, the measurement
Located at the second end of the probe lead wire, pressurization measures lead and is connected with jack probe.
In above-mentioned tunnel model test stand, in addition to pressurization casing wall support, the pressurization casing wall support include ring set
And Zhi Duan, several described Zhi Duan are along the circumferential direction distributed the ring set, the ring set is buckled in the outer wall of the pressurized cylinder, described
The support frame of stand main body is connected described in Zhi Duanyu.
In above-mentioned tunnel model test stand, the medium pipeline includes fluid flow tube and gas flow tube, the fluid flow tube and
Gas flow tube is located at the side wall bottom of the pressurization part.
In above-mentioned tunnel model test stand, the model support unit includes supportive body and detent mechanism, described
Tunnel model is fixed on the pressurized cylinder by the supportive body, and the tunnel model is fixed on institute by the detent mechanism
State supportive body.
In above-mentioned tunnel model test stand, the supportive body includes model support and model support pole, described
Model support is fixed on the inwall of the pressurized cylinder, and some model support poles are distributed in the model support, described
Model support pole is fixed on the bottom of the pressurized cylinder.
In above-mentioned tunnel model test stand, the detent mechanism includes rubber plug, support alignment pin and fastening spiral shell
Bolt, the both ends of the tunnel model are sealed by the rubber plug, and the rubber plug passes through fastening bolt and the model
Support is connected, and the model support is positioned at the inwall of the pressurized cylinder by support alignment pin several described.
The beneficial effect comprise that：
Study that tunnel lining structure destructive process is different from traditional filler pressing Ioad mode, test-bed of the invention
It is to introduce the applying mode of tunnel confined pressure by the way that liquid/gas is pressurizeed, carry out solution corrosion to tunnel model couples with confined pressure
The lower tunnel model damage of lining research of effect, specifically：
Compared to existing for current tunnel model test, " load mode is relatively complicated, it is necessary to which substantial amounts of manpower carries out filler
Addition, waste time and energy " the defects of, testing stand of the invention is by the way of liquid or gas pressurized, it is not necessary to substantial amounts of people
Power carries out the addition of filler, time saving and energy saving；
Compared to existing for current tunnel model test, " model test stand of research tunnel damage -form only considers single
Influence of the load to tunnel damage -form, and do not consider the aggravation effect that corrosive environment destroys to tunnel " the defects of, the present invention
Test-bed consider confined pressure and destruction of the corrosion to tunnel simultaneously, it can be deduced that tunnel confined pressure serves as a contrast with corrosive environment to tunnel
Building the coupling that structure is destroyed influences.
Compared to existing for current tunnel model test the defects of " alternation of wetting and drying accelerated corrosion experiment ", experiment of the invention
Stand can realize the at-once monitor of etchant solution concentration, and energy instantaneously changing solution, ensure the stabilization of solution concentration.Meanwhile
When carrying out dry cyclic test, directly solution is discharged, hot-air will be exchanged with pressurized cylinder, eliminating in traditional stand will try
Block is carried to the process of drying baker from liquor box, and efficiency significantly improves.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, the present invention can more completely be more fully understood.Accompanying drawing described herein is used for providing
A further understanding of the present invention, embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.
Fig. 1 is a kind of structural representation of tunnel model test stand of the present invention；
Fig. 2 is Fig. 1 1-1 profiles；
Fig. 3 is Fig. 1 2-2 profiles；
Fig. 4 is a kind of structural representation of the model support of tunnel model test stand of the present invention；
Fig. 5 is Fig. 4 3-3 profiles；
Fig. 6 is Fig. 4 4-4 profiles；
Fig. 7 is Fig. 4 5-5 profiles.
In figure：1st, pedestal 2, support frame 3, pressurized cylinder 4, pressurization casing wall support 5, closure 6, oil fuel tube 7, very heavy
Top 8, reaction frame 9, piston rod set 10, piston rod 11, piston 12, fluid flow tube 13, rubber plug 14, tunnel model
15th, model support 16, measurement probe 17, probe lead wire 18, pressurized cylinder epicoele 19, pressurized cylinder cavity of resorption 20, model support branch
Bar 21, pressurization measure lead 22, fastening bolt 23, rubber suction cups 24, support alignment pin 25, gas flow tube.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to technical scheme.
A kind of tunnel model test stand as shown in Figure 1, including stand main body, pressurization part and tunnel model 14, pressurization
Portion is placed in stand main body, and tunnel model 14 is fixed on the inner chamber of pressurization part by model support unit, and the side wall of pressurization part is set
There is medium pipeline.
Stand main body includes pedestal 1, support frame 2 and reaction frame 8, and support frame 2 is placed in pedestal 1, and reaction frame 8 is placed in support frame
2 top, the first end of pressurization part are placed in support frame 2, and the second end of pressurization part is placed in reaction frame 8.
Pressurization part includes pedestal, pressurization adjustment unit and pressurization monitoring unit, and pedestal includes pressurized cylinder 3 and closure 5, close
Capping 5 is located at the top of pressurized cylinder 3, forms closed pressurizing chamber.Adjustment unit of pressurizeing is through closure 5；Pressurization regulation is single
The first end of member is fixed on reaction frame 8, and the second end of adjustment unit of pressurizeing contacts with the inwall of pressurized cylinder 3.
Pressurization adjustment unit includes piston component and hydraulic jack 7, and piston rod 10 is connected with hydraulic jack 7；It is living
Plug assembly includes piston rod 10 and piston 11, and piston rod 10 is connected with piston 11；Wherein：Piston rod 10 passes through piston rod set 9
Through closure 5, the periphery of piston 11 contacts with the inwall of pressurized cylinder 3, and piston rod set 9 matches with the centre bore of closure 5
It is connected；Oil fuel tube 6 is additionally provided with piston rod set 9, lubricating oil is injected to the outer wall of piston rod 10 by oil fuel tube 6, ensures piston
The smooth operation of bar 10.
The monitoring unit that pressurizes includes measuring probe 16, probe lead wire 17 and pressurizeing measuring lead 21, and probe lead wire 17 passes through
Piston component, the first end of probe lead wire 17 stretch out piston rod 17, the second end that probe 16 is located at probe lead wire 17 are measured, right
During (wet circulation) corrosion test of the material of tunnel model 14, the first 16 monitoring solution concentration of utilization probing；To tunnel model 14
When carrying out dry cyclic test, the temperature of the first 16 monitoring pressure cylinder cavity of resorption 19 of throughput probing, ensure the temperature of the dry circulation in cylinder
Condition；Pressurization measures lead 21 and is connected with hydraulic jack 7, the pressure value during being tested for measurement model.
Also include pressurization casing wall support 4, pressurization casing wall support 4 includes ring set and Zhi Duan, and several branch ends are along the circumferential direction
Ring set is uniformly distributed, ring set is buckled in the outer wall of pressurized cylinder 3, and the support frame 2 of Zhi Duanyu stand main bodys is connected.
Medium pipeline includes fluid flow tube 12 and gas flow tube 25, and fluid flow tube 12 and gas flow tube 25 are located at the side wall bottom of pressurization part
End, wherein：Fluid flow tube 12 is used in feed liquor during wet cyclic test, goes out liquid and the outlet in dry cyclic test, gas flow tube
25 are used for the air inlet in dry cyclic test.
Model support unit includes supportive body and detent mechanism, and tunnel model 14 is fixed on pressurized cylinder by supportive body
3, tunnel model 14 is fixed on supportive body by detent mechanism.That is, supportive body is used to fix tunnel model 14,
And detent mechanism is then for the tunnel model 14 after fixation to be positioned.
Supportive body includes the model support 15 of annular and model support pole 20, model support 15 are fixed on pressurized cylinder 3
Inwall, some model support poles 20 are uniformly distributed in model support 15, and model support pole 20 is fixed on pressurized cylinder 3
Bottom.
Detent mechanism includes rubber plug 13, support alignment pin 24 and fastening bolt 22, and the both ends of tunnel model 14 pass through
Rubber plug 13 is sealed, and rubber plug 13 is connected by fastening bolt 22 with model support 15, and model support 15 is by some
Individual support alignment pin 24 is fixed on the inwall of pressurized cylinder 3.
Exemplified by being loaded in a manner of hydraulic pressurization to tunnel model 14, the specific experiment of above-mentioned tunnel model test stand
Process is：
Before pressurization, tunnel model 14 is blocked using rubber plug 13, and tightens fastening bolt 22, ensure that tunnel both ends
Sealing.(rubber plug 13 is connected by fastening bolt 22 with tunnel model 14, is applied by fastening bolt 22 along tunnel model
The pressure of 14 longitudinal directions.) inhaled afterwards using the support alignment pin 24 on model support 15 and the rubber of model support pole end
Disk 23, tunnel model 14 is fixed and positioned, is fixed in the bottom of pressure cylinder；By screwing hermetic lid 5 to pressurization
Cylinder 3 is sealed；
Liquid is injected into pressurized cylinder 3 by fluid flow tube 12, will by pressure caused by liquid according to the load for intending applying
The piston component and hydraulic jack 7 being made up of piston 11 and piston rod 10 are pushed up to relevant position, close fluid flow tube 12 afterwards；
And lubricating oil is injected to piston component by oil fuel tube 6, it is ensured that the smooth operation of piston rod 10, (pressurization measures by control line
Lead 21) the detection pressure applied size of hydraulic jack 7, until reaching specified pressure.
In corrosion test of the progress corrosive solution to the material of tunnel model 14, the first 16 monitoring solution of utilization probing is dense
Degree, if concentration exceedes feasible value, passed in and out by adjusting the solution at fluid flow tube 12, ensure that pressurized solution concentration is in and stablize water
It is flat, after off-test, fluid flow tube 12 is opened, the solution in cylinder is discharged.
Meanwhile the salting liquid containing different ions can be used, different ions corrosion can be studied tunnel is broken with confined pressure
Bad coupling.
The corrosion of corrosion test accelerated material typically by way of dry, wet circulation combines, the process of dry circulation use gas
Pressure loads instead of the mode of hydraulic pressure to tunnel model 14, and detailed process is：
Fluid flow tube 12 is opened, by the liquid emptying in pressurized cylinder 3；Hot-air is accessed by gas flow tube 25, while ensures liquid
Flow tube 12 is opened, and as air stream outlet, ensures the circulation of air in pressurized cylinder cavity of resorption 19, the first 16 monitoring pressure cylinder of throughput probing
3 internal temperature, ensure the temperature conditionss of the dry circulation in cylinder.Piston 11 divides pressurized cylinder 3 for pressurized cylinder epicoele 18 and pressurization
Cylinder cavity of resorption 19, wherein：The cavity of resorption of pressurized cylinder cavity of resorption 19 is pressure chamber, and pressurized cylinder epicoele 18 is then the scope of activities of piston 11, is
The motion of piston 11 provides space.In dry cyclic process, by adjusting flow velocity and the gas flow tube that the gas of fluid flow tube 12 is discharged
The flow velocity that 25 hot-airs flow into, ensure the pressure stability in pressurized cylinder cavity of resorption 19 in whole dry cyclic process.
After experiment, tunnel model 14 is taken out, carries out performance dependence test.
As can be seen that the present invention realizes tunnel confined pressure and phase mutual coupling of the solution corrosion to tunnel lining structure corrosion failure
Close, and drying and watering cycle can be realized in same pressurized cylinder 3, and also tunnel model 14 passes through in the side of sealing, support and positioning
Formula is firmly secured in liquid.
As described above, embodiments of the invention are explained, it is clear that as long as essentially without this hair of disengaging
Bright inventive point and effect, will be readily apparent to persons skilled in the art deformation, also be all contained in the guarantor of the present invention
Within the scope of shield.
Claims (5)
- A kind of 1. tunnel model test stand, it is characterised in that including stand main body, pressurization part and tunnel model, the pressurization Portion is placed in the stand main body, and the tunnel model is fixed on the inner chamber of the pressurization part by model support unit, described The side wall of pressurization part is provided with medium pipeline；The stand main body includes pedestal, support frame and reaction frame, and support frame as described above is placed in the pedestal, and the counter-force is placed on The top of support frame as described above, the first end of the pressurization part are placed in support frame as described above, and the second end of the pressurization part is placed in described Reaction frame；The pressurization part, which includes pedestal, pressurization adjustment unit and pressurization monitoring unit, the pedestal, includes pressurized cylinder and closure, The closure is located at the top of the pressurized cylinder, and the pressurization adjustment unit is through the closure；The pressurization regulation The first end of unit is fixed on the reaction frame, and the second end of the pressurization adjustment unit contacts with the inwall of the pressurized cylinder；The pressurization adjustment unit includes piston component and jack, and the piston component is connected with the jack；It is described Piston component includes piston rod and piston, and the piston rod is connected with the piston；Wherein：The piston rod passes through piston rod Set contacted through the closure, the periphery of the piston with the inwall of the pressurized cylinder, the piston rod set with it is described close The centre bore matching of capping is connected；The piston rod is put provided with oil fuel tube；The monitoring unit that pressurizes includes measuring probe, probe lead wire and pressurizeing measuring lead, and probe lead wire passes through piston component, pops one's head in The first end of lead stretches out piston rod, measures probe located at the second end of probe lead wire, pressurization measures lead and is connected with jack Connect.
- 2. tunnel model test stand according to claim 1, it is characterised in that the medium pipeline include fluid flow tube and Gas flow tube, the fluid flow tube and gas flow tube are located at the side wall bottom of the pressurization part, serve into liquid/gas or pressure limiting.
- 3. tunnel model test stand according to claim 2, it is characterised in that the model support unit includes support Main body and detent mechanism, the tunnel model are fixed on the pressurized cylinder by the supportive body, and the tunnel model passes through The detent mechanism is fixed on the supportive body.
- 4. tunnel model test stand according to claim 3, it is characterised in that the supportive body includes model support With model support pole, the model support is fixed on the inwall of the pressurized cylinder, some model support pole distributions In the model support, the model support pole is fixed on the bottom of the pressurized cylinder.
- 5. tunnel model test stand according to claim 4, it is characterised in that the detent mechanism blocks up including rubber Head, support alignment pin and fastening bolt, the both ends of the tunnel model are sealed by the rubber plug, and the rubber plug leads to Cross fastening bolt with the model support to be connected, the model support is positioned at described by support alignment pin several described The inwall of pressurized cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052099.4A CN104655441B (en) | 2015-01-30 | 2015-01-30 | A kind of tunnel model test stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052099.4A CN104655441B (en) | 2015-01-30 | 2015-01-30 | A kind of tunnel model test stand |
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| CN104655441A CN104655441A (en) | 2015-05-27 |
| CN104655441B true CN104655441B (en) | 2017-11-17 |
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| CN201510052099.4A Expired - Fee Related CN104655441B (en) | 2015-01-30 | 2015-01-30 | A kind of tunnel model test stand |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101790B (en) * | 2017-05-22 | 2019-10-29 | 西南交通大学 | A kind of tunnel model experimental provision and tunnel model experimental system |
| CN108414362B (en) * | 2018-03-09 | 2020-07-14 | 安徽理工大学 | Multipurpose model test platform |
| CN108398372A (en) * | 2018-03-26 | 2018-08-14 | 上海隧道工程有限公司 | Shield duct piece corrosion resistance test device |
| CN112629897B (en) * | 2020-11-16 | 2022-11-01 | 西南交通大学 | Model test system for mechanical properties of tunnel lining under action of train pneumatic load |
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| CN101067599A (en) * | 2007-06-07 | 2007-11-07 | 浙江大学 | Multifunction step-in type artificial environment composite simulation durability experiment device |
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| JP2932833B2 (en) * | 1992-05-20 | 1999-08-09 | 日本鋼管株式会社 | Inspection system for conduits laid in tunnels |
| JP5442546B2 (en) * | 2010-07-06 | 2014-03-12 | 一般財団法人電力中央研究所 | Rock sample permeability test method |
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- 2015-01-30 CN CN201510052099.4A patent/CN104655441B/en not_active Expired - Fee Related
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| CN101067599A (en) * | 2007-06-07 | 2007-11-07 | 浙江大学 | Multifunction step-in type artificial environment composite simulation durability experiment device |
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