CN205483953U - Tunnel lining structure accelerated corrosion degradation testing equipment under state that bears - Google Patents
Tunnel lining structure accelerated corrosion degradation testing equipment under state that bears Download PDFInfo
- Publication number
- CN205483953U CN205483953U CN201620052675.5U CN201620052675U CN205483953U CN 205483953 U CN205483953 U CN 205483953U CN 201620052675 U CN201620052675 U CN 201620052675U CN 205483953 U CN205483953 U CN 205483953U
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- China
- Prior art keywords
- tunnel lining
- lining component
- loading crossbeam
- tunnel
- accelerated corrosion
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Abstract
The utility model provides an actual stress state that tunnel lining structure accelerated corrosion degradation testing equipment under state that bears, it is by thread brace rod, left and right load crossbeam, from the loading device that reaction beam and hydraulic jack form, controllable load is carried out to tunnel lining structural element to the mode of loading device through being gone into by moment of flexure, axle mechanical responsiveness, simulates operation phase tunnel lining structure really. Simultaneously, by the corrosive liquid in stationary flow DC power supply, top surface corruption district or corruption district of qxcomm technology, stainless steel meshwork in the corrosive liquid and tunnel lining structural element's reinforcing bar constitution electrochemistry accelerated corrosion system, electrochemistry accelerated corrosion system is through carrying out the accelerated corrosion degradation to tunnel lining structural element. Foil gage, displacement meter, pressure sensor etc. Measure data such as the meeting an emergency of tunnel lining structural element, deformation displacement in real time to tunnel lining structure accelerated corrosion degradation is experimental under having realized bearing the state. Its experimental enviroment is the load, corrodes combined action's environment, and it is more close with the real secret environment of tunnel lining structure, the performance decline development law of the true tunnel lining structure of reflection that can be more accurate, thereby can provide more reliable experimental foundation for tunnel engineering's design, maintenance.
Description
Technical field
This utility model relates to tunnel lining structure accelerated corrosion deterioration test equipment under a kind of loaded state.
Background technology
Along with present stage urban rail transit in China, more river Sea-Crossing Passage engineering is flourish, traffic tunnel
Engineering, because of advantages such as its traffic support are functional, structure is comparatively safe, has been increasingly becoming traffic engineering than choosing
In major programme.
Than earth construction, due to the complexity of underground soil and water resources, tunnel lining structure at water and soil load and
Around under the synergy of erosion environment, its liner structure mechanical property occurred more after a period of time under arms
Big deterioration decline: on the one hand, the distinctive Cl of erosion environment-、Mg2+、SO4 2-Will be with Deng corrosive ion
Subsoil water, sea water etc. slowly to invade in tunnel, cause the too early corrosion of the reinforcing bar in lining cutting, make reinforced concrete
Soil occurs that corrosion deteriorates, and makes structure rhegma or local failure occur；On the other hand, tunnel lining structure needs long
Phase bears the effect of Rock And Soil pressure from surrounding rock and water pressure, by accelerated material and the corrosive degradation of structure.That is,
Tunnel lining structure is at mechanics factor (water and soil load) and the chemical factor (harmful chemicals such as villaumite, acid-alkali salt
Material etc.) common effect under, it may occur that corrosive degradation, cause its bearing capacity to reduce, contracting in service life
Short.
Indoor accelerated corrosion test method is because simulating Practical Project corrosive degradation environment and combine similar reason
Opinion, electrochemical method, can realize the simulation test of the overall process performance of structure erosion deterioration in a short time, thus be
The design in tunnel, maintenance provide test basis.Accelerating corrosion for tunnel lining reinforcing steel bar concrete tries at present
Test and carry out mainly for armored concrete test specimen or tunnel-liner bending component, the most first use electrochemical method
Armored concrete test specimen or component are accelerated corrosion, then the test specimen after corrosion or component are added
Carry, mechanics and the engineering characteristic such as test specimen or the intensity of component, rigidity, destruction situation after test corrosion.This
First corrosion, the test scene of rear bearing load, with load and the tunnel lining corroding common effect, carry out simultaneously
Block knot true environment is not inconsistent, it is impossible to reflection considers water and soil load environment and erosion deterioration around tunnel lining structure
Performance degradation development law under environment synergy.Its result of the test depends on as Tunnel Design, maintenance test
According to reliability have much room for improvement.
Utility model content
The purpose of this utility model is to provide tunnel lining structure accelerated corrosion deterioration examination under a kind of loaded state
Test equipment, this testing equipment can realize water and soil load environment and surrounding ions erosion environment simultaneously, synergy
Under tunnel lining structure accelerated corrosion test, the true underground environment of its experimental enviroment and tunnel lining structure
Closer to, the performance degradation development law of true tunnel lining structure can be reflected more accurately, thus be tunnel
The design of engineering, maintenance provide relatively reliable test basis.
This utility model realizes the first technical scheme that its purpose used, tunnel under a kind of loaded state
Liner structure accelerated corrosion testing equipment, is characterized in that:
Before and after tunnel lining component bottom, both sides are equipped with high-strength power transmission thread, and high-strength power transmission screw thread draws
Bar sequentially passes through left loading crossbeam, right loading crossbeam and self-reaction force beam, and the two ends of thread connect anchoring
Bolt, left loading crossbeam, right loading crossbeam all by power transmission liner respectively with the left side of tunnel lining component bottom
End contacts with right-hand member；Self-reaction force beam is positioned at the right side of right loading crossbeam, and the left side of self-reaction force beam is fixed with water
Flat hydraulic jack, the left end of hydraulic jack is by the right side phase of pressure transducer with right loading crossbeam
Even；
The concrete of described tunnel lining component and rebar surface are mounted on foil gauge and displacement meter；
Described hydraulic jack, pressure transducer, foil gauge and displacement meter all processes with data and controls system
System is connected；
The top of described tunnel lining component is provided with catch basin, described catch basin by waterproof material in tunnel
The top of composite structure encloses formation；Stainless (steel) wire it is placed with in catch basin；
Described stainless (steel) wire is electrically connected with the negative electrode of current stabilization DC source by conductor wire；Tunnel lining component
Reinforcing bar then electrically connected with the anode of current stabilization DC source by conductor wire.
This utility model realizes the second technical scheme that its purpose used, tunnel under a kind of loaded state
Liner structure accelerated corrosion testing equipment, it is characterised in that:
Before and after tunnel lining component bottom, both sides are equipped with high-strength power transmission thread, and high-strength power transmission screw thread draws
Bar sequentially passes through left loading crossbeam, right loading crossbeam and self-reaction force beam, and the two ends of thread connect anchoring
Bolt, left loading crossbeam, right loading crossbeam all by power transmission liner respectively with the left side of tunnel lining component bottom
End contacts with right-hand member；Self-reaction force beam is positioned at the right side of right loading crossbeam, and the left side of self-reaction force beam is fixed with water
Flat hydraulic jack, the left end of hydraulic jack is by the right side phase of pressure transducer with right loading crossbeam
Even；
The concrete of described tunnel lining component and rebar surface are mounted on foil gauge and displacement meter；
Described hydraulic jack, pressure transducer, foil gauge and displacement meter all processes with data and controls system
System is connected；
The leading flank of described tunnel lining component, trailing flank and bottom surface, one layer of waterproof material shape of sealed envelope
Become water conservation district；Tunnel lining component leading flank, the waterproof material of trailing flank stretch out tunnel lining component top
On the left of apical margin and tunnel tunnel lining component end face and the waterproof material on right side, enclose and form composite structure top
Catch basin；The end of the leading flank of the tunnel lining component in water conservation district, trailing flank, bottom surface and catch basin
Portion lays stainless (steel) wire；And between stainless (steel) wire and the waterproof material in water conservation district, fill water-absorbing sponge；
Described stainless (steel) wire is electrically connected with the negative electrode of current stabilization DC source by conductor wire；Tunnel lining component
Reinforcing bar then electrically connected with the anode of current stabilization DC source by conductor wire.
Work process and the principle of this utility model testing equipment be:
The anchor bolt at high-strength power transmission thread two ends is tightened, makes left loading crossbeam, right loading crossbeam anchor
Gu the bottom in the tunnel lining component left and right sides to be measured.Corrosive liquid is poured in catch basin, to the first
The device of technical scheme, corrosive liquid i.e. end face through tunnel lining component permeates downwards, at tunnel lining component
Near top forms end face corrosion region；To the device of the second technical scheme then at corrosive liquid i.e. through tunnel-liner
The end face of component, side, bottom surface, to tunnel lining component internal penetration, are formed around tunnel lining component
Omnidirectional's corrosion region.
Subsequently, data process and control system controls hydraulic jack and loads to the right crossbeam imposed load, tunnel
The left and right sides of composite structure bottom is i.e. by the eccentric extruding (bending load) below axis, its load
The size of value is measured in real time by pressure transducer and is fed back to data and processes and control system.Meanwhile, current stabilization is straight
Stream power initiation, DC current pass sequentially through the anode of current stabilization DC source, the reinforcing bar of tunnel lining component,
End face corrosion region (the first scheme) or the corrosive liquid of omnidirectional's corrosion region (first scheme), in corrosion region
Stainless (steel) wire flow to the negative electrode of current stabilization DC source, constitute electrochemical corrosion loop, thus at loaded state
Under, it is achieved the accelerated corrosion to tunnel lining component is tested.
In accelerated corrosion process of the test, foil gauge and displacement meter measure in real time tunnel lining component strain and
Deformation displacement；And the steel bar corrosion degradation of tunnel lining component can be tested out by steel bar corrosion instrument, logical
Cross ultrasonic non-destructive survey meter and detect the damage development process of component inside, by penetration of fracture tilted object instrument
Record corrosion resistant member crack developing change procedure to be loaded.After having tested, by load value, corrosive liquid
Kind, strain, displacement, extent of steel corrosion, the analysis of crack developing change, process can draw tunnel
The performance degradation development law of liner structure, thus design, the maintenance for Tunnel Engineering provides test basis.
Compared with prior art, the beneficial effects of the utility model are:
By thread, left and right loading crossbeam, self-reaction force beam and the charger of hydraulic jack composition
By the way of by moment of flexure, the importing of axle power, tunnel lining structure component is carried out controlled loading, true topotype
Intend the actual forced status of operation phase tunnel lining structure.Meanwhile, by current stabilization DC source, end face corrosion region
Or the corrosive liquid of omnidirectional's corrosion region, the stainless (steel) wire in corrosive liquid and the reinforcing bar composition of tunnel lining structure component
Electrochemistry accelerated corrosion system tunnel lining structure component is accelerated corrosive degradation.Foil gauge, displacement
Meter, pressure transducer etc. measure the data such as the strain of tunnel lining structure component, deformation displacement in real time, thus
Achieve tunnel lining structure accelerated corrosion deterioration test under loaded state.
In a word.Experimental enviroment of the present utility model is load, corrodes coefficient environment, and it serves as a contrast with tunnel
Build the real underground environment of structure closer to, the performance degradation of true tunnel lining structure can be reflected more accurately
Development law；It is thus possible to for Tunnel Engineering design, safeguard relatively reliable test basis be provided.
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of this utility model embodiment one.
Fig. 2 is the main TV structure schematic diagram of this utility model embodiment one.
Fig. 3 is the plan structure schematic diagram of this utility model embodiment two.
Fig. 4 is the main TV structure schematic diagram of this utility model embodiment two.
Detailed description of the invention
Embodiment one
Fig. 1-2 illustrates, a kind of detailed description of the invention of the present utility model is, tunnel lining under a kind of loaded state
Build structure accelerated corrosion testing equipment, it is characterized in that:
Before and after tunnel lining component 10 bottom, both sides are equipped with high-strength power transmission thread 3, high-strength power transmission
Thread 3 sequentially passes through left loading crossbeam 2, right loading crossbeam 1 and self-reaction force beam 5, thread 3
Two ends connect have anchor bolt 6, left loading crossbeam 2, right loading crossbeam 1 are all by power transmission liner 4 points
Do not contact with left end and the right-hand member of tunnel lining component 10 bottom；Self-reaction force beam 5 is positioned at right loading crossbeam 1
Right side, and the left side of self-reaction force beam 5 is fixed with the hydraulic jack 7 of level, a left side for hydraulic jack 7
End is connected by the right side of pressure transducer 8 with right loading crossbeam 1；
Concrete and the rebar surface of described tunnel lining component 10 are mounted on foil gauge 21 and displacement meter
22；
Described hydraulic jack 7, pressure transducer 8, foil gauge 21 and displacement meter 22 all with data at
Reason and control system are connected；
The top of described tunnel lining component 10 is provided with catch basin 11, and described catch basin 11 is by waterproof material
Material 14 encloses formation at the top of tunnel lining component 10；Stainless (steel) wire 12 it is placed with in catch basin 11；
Described stainless (steel) wire 12 is electrically connected with the negative electrode of current stabilization DC source by conductor wire；Tunnel-liner
The reinforcing bar 10a of component 10 is then electrically connected with the anode of current stabilization DC source by conductor wire.
Embodiment two
Fig. 3-4 illustrates, the second detailed description of the invention of the present utility model is, tunnel under a kind of loaded state
Liner structure accelerated corrosion testing equipment, is characterized in that:
2, tunnel lining structure accelerated corrosion testing equipment under a kind of loaded state, it is characterised in that:
Before and after tunnel lining component 10 bottom, both sides are equipped with high-strength power transmission thread 3, high-strength power transmission
Thread 3 sequentially passes through left loading crossbeam 2, right loading crossbeam 1 and self-reaction force beam 5, thread 3
Two ends connect have anchor bolt 6, left loading crossbeam 2, right loading crossbeam 1 are all by power transmission liner 4 points
Do not contact with left end and the right-hand member of tunnel lining component 10 bottom；Self-reaction force beam 5 is positioned at right loading crossbeam 1
Right side, and the left side of self-reaction force beam 5 is fixed with the hydraulic jack 7 of level, a left side for hydraulic jack 7
End is connected by the right side of pressure transducer 8 with right loading crossbeam 1；
Concrete and the rebar surface of described tunnel lining component 10 are mounted on foil gauge 21 and displacement meter
22；
Described hydraulic jack 7, pressure transducer 8, foil gauge 21 and displacement meter 22 all with data at
Reason and control system are connected；
The described leading flank of tunnel lining component 10, trailing flank and bottom surface, one layer of waterproof material of sealed envelope
Material 14 formation water conservation district；Tunnel lining component 10 leading flank, the waterproof material 14 of trailing flank stretch out tunnel
On the left of the apical margin at composite structure 10 top and tunnel lining component 10 end face and the waterproof material 14 on right side, enclose
Close the catch basin 11 ' forming composite structure 10 top；The front side of the tunnel lining component 10 in water conservation district
Stainless (steel) wire 12 is laid in the bottom of face, trailing flank, bottom surface and catch basin 11 '；And in water conservation district not
Water-absorbing sponge 15 is filled between rust steel mesh 12 and waterproof material 14；
Described stainless (steel) wire 12 is electrically connected with the negative electrode of current stabilization DC source by conductor wire；Tunnel-liner
The reinforcing bar 10a of component 10 is then electrically connected with the anode of current stabilization DC source by conductor wire.
Claims (2)
1. a tunnel lining structure accelerated corrosion deterioration test equipment under loaded state, is characterized in that:
Before and after tunnel lining component (10) bottom, both sides are equipped with high-strength power transmission thread (3), high-strength power transmission thread (3) sequentially passes through left loading crossbeam (2), right loading crossbeam (1) and self-reaction force beam (5), the two ends of thread (3) connect has anchor bolt (6), left loading crossbeam (2), right loading crossbeam (1) all to be contacted with left end and the right-hand member of tunnel lining component (10) bottom respectively by power transmission liner (4)；Self-reaction force beam (5) is positioned at the right side of right loading crossbeam (1), and the left side of self-reaction force beam (5) is fixed with the hydraulic jack (7) of level, the left end of hydraulic jack (7) is connected with the right side of right loading crossbeam (1) by pressure transducer (8)；
The concrete of described tunnel lining component (10) and rebar surface are mounted on foil gauge (21) and displacement meter (22)；
Described hydraulic jack (7), pressure transducer (8), foil gauge (21) and displacement meter (22) all processes with data and control system is connected；
The top of described tunnel lining component (10) is provided with catch basin (11), and described catch basin (11) is enclosed at the top of tunnel lining component (10) by waterproof material (14) and formed；Stainless (steel) wire (12) it is placed with in catch basin (11)；
Described stainless (steel) wire (12) is electrically connected with the negative electrode of current stabilization DC source by conductor wire；The reinforcing bar (10a) of tunnel lining component (10) is then electrically connected with the anode of current stabilization DC source by conductor wire.
2. tunnel lining structure accelerated corrosion deterioration test equipment under a loaded state, it is characterised in that:
Before and after tunnel lining component (10) bottom, both sides are equipped with high-strength power transmission thread (3), high-strength power transmission thread (3) sequentially passes through left loading crossbeam (2), right loading crossbeam (1) and self-reaction force beam (5), the two ends of thread (3) connect has anchor bolt (6), left loading crossbeam (2), right loading crossbeam (1) all to be contacted with left end and the right-hand member of tunnel lining component (10) bottom respectively by power transmission liner (4)；Self-reaction force beam (5) is positioned at the right side of right loading crossbeam (1), and the left side of self-reaction force beam (5) is fixed with the hydraulic jack (7) of level, the left end of hydraulic jack (7) is connected with the right side of right loading crossbeam (1) by pressure transducer (8)；
The concrete of described tunnel lining component (10) and rebar surface are mounted on foil gauge (21) and displacement meter (22)；
Described hydraulic jack (7), pressure transducer (8), foil gauge (21) and displacement meter (22) all processes with data and control system is connected；
Leading flank, trailing flank and the bottom surface of described tunnel lining component (10), sealed envelope one floor waterproof material (14) forms water conservation district；Tunnel lining component (10) leading flank, the waterproof material (14) of trailing flank stretch out on the left of the apical margin at tunnel lining component (10) top and tunnel tunnel lining component (10) end face and the waterproof material (14) on right side, enclose the catch basin (11 ') at formation composite structure (10) top；Stainless (steel) wire (12) is laid in the bottom of the leading flank of tunnel lining component (10), trailing flank, bottom surface and catch basin (11 ') in water conservation district；And between stainless (steel) wire (12) and the waterproof material (14) in water conservation district, fill water-absorbing sponge (15)；
Described stainless (steel) wire (12) is electrically connected with the negative electrode of current stabilization DC source by conductor wire；The reinforcing bar (10a) of tunnel lining component (10) is then electrically connected with the anode of current stabilization DC source by conductor wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052675.5U CN205483953U (en) | 2016-01-20 | 2016-01-20 | Tunnel lining structure accelerated corrosion degradation testing equipment under state that bears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052675.5U CN205483953U (en) | 2016-01-20 | 2016-01-20 | Tunnel lining structure accelerated corrosion degradation testing equipment under state that bears |
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| Publication Number | Publication Date |
|---|---|
| CN205483953U true CN205483953U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620052675.5U Withdrawn - After Issue CN205483953U (en) | 2016-01-20 | 2016-01-20 | Tunnel lining structure accelerated corrosion degradation testing equipment under state that bears |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547983A (en) * | 2016-01-20 | 2016-05-04 | 西南交通大学 | Accelerated corrosion and deterioration testing device for tunnel lining structure in bearing state |
| CN108205055A (en) * | 2017-12-29 | 2018-06-26 | 浙江大学 | Ground Deformation for Shallow Tunnel pilot system under a kind of operation highway |
| CN111795895A (en) * | 2019-04-08 | 2020-10-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Test device for researching corrosion of prestressed concrete pressure pipeline and use method thereof |
-
2016
- 2016-01-20 CN CN201620052675.5U patent/CN205483953U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105547983A (en) * | 2016-01-20 | 2016-05-04 | 西南交通大学 | Accelerated corrosion and deterioration testing device for tunnel lining structure in bearing state |
| CN105547983B (en) * | 2016-01-20 | 2019-01-18 | 西南交通大学 | Tunnel lining structure accelerated corrosion deterioration test device under loaded state |
| CN108205055A (en) * | 2017-12-29 | 2018-06-26 | 浙江大学 | Ground Deformation for Shallow Tunnel pilot system under a kind of operation highway |
| CN111795895A (en) * | 2019-04-08 | 2020-10-20 | 水利部交通运输部国家能源局南京水利科学研究院 | Test device for researching corrosion of prestressed concrete pressure pipeline and use method thereof |
| CN111795895B (en) * | 2019-04-08 | 2022-03-18 | 水利部交通运输部国家能源局南京水利科学研究院 | Test device and test method for researching durability of prestressed concrete pressure pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20190118 |
|
| AV01 | Patent right actively abandoned |