CN105588751B - Reinforced concrete bonding section drawing fatigue and corrosion coupling test device and test method - Google Patents
Reinforced concrete bonding section drawing fatigue and corrosion coupling test device and test method Download PDFInfo
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- CN105588751B CN105588751B CN201610127317.0A CN201610127317A CN105588751B CN 105588751 B CN105588751 B CN 105588751B CN 201610127317 A CN201610127317 A CN 201610127317A CN 105588751 B CN105588751 B CN 105588751B
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- 238000005260 corrosion Methods 0.000 title claims abstract description 79
- 230000007797 corrosion Effects 0.000 title claims abstract description 77
- 230000008878 coupling Effects 0.000 title claims abstract description 41
- 238000010168 coupling process Methods 0.000 title claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 41
- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 18
- 238000010998 test method Methods 0.000 title abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 239000004567 concrete Substances 0.000 claims description 78
- 230000003014 reinforcing effect Effects 0.000 claims description 49
- 238000011068 loading method Methods 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 26
- 230000001070 adhesive effect Effects 0.000 claims description 23
- 239000000853 adhesive Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 238000002791 soaking Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims 3
- 238000004873 anchoring Methods 0.000 claims 1
- 230000001112 coagulating effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 230000001808 coupling effect Effects 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007586 pull-out test Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000001429 stepping effect Effects 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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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
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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Abstract
The invention discloses a test device and a test method for coupling drawing fatigue and corrosion of a reinforced concrete bonding section. The device for testing the drawing fatigue and corrosion coupling of the reinforced concrete bonding section comprises a limiting plate supported by an upright post and horizontally arranged, and a corrosion box fixed on the limiting plate and used for simulating a dry-wet circulation environment, wherein reinforced concrete and a corrosion medium are placed in the corrosion box; and a conductive sheet is arranged in the corrosion box, and the conductive sheet and the reinforced concrete steel bar are respectively and electrically connected with the direct current instrument through corresponding leads. The invention can simulate the durability test of the material under the coupling action of harmful ion erosion and fatigue.
Description
Technical field
The present invention relates to a kind of armored concrete adhesive section drawing fatigues and corrosion coupling test device and test method, belong to
In engineering structure durability field.
Background technology
Reinforced concrete structure is chronically exposed in the adverse circumstances with corrosive medium, under the erosion of harmful ion,
Not only so that effective area of reinforcement reduces and the deterioration of mechanical property, it will also lead to subtracting for adhesive property between reinforcing bar and concrete
It is weak, eventually lead to the reduction of durability of concrete structures.And the adhesive property of armored concrete is studied in corrosion and tired lotus
It is correctly evaluate and extend service life of reinforced concrete under fatigue load basic to carry the fatigue behaviour under coupling
Premise.
For the fatigue behaviour of reinforcing bar and Bond Performance Between Concrete under corrosion and tired coupling, due to loading device
Limitation, mostly use stepping action at present and studied.Component is corroded first, after it reaches regulation corrosion degree,
Fatigue behaviour is bonded to it again to study；Or the fatigue test of certain number is first carried out to component, then corroded again
Experiment, finally studies its adhesive property.The above research method has following 2：
1, for steel bar corrosion process prior to applying finder charge, and in Practical Project, corrosion is during structure load-bearing
Occur, two kinds influence collective effect may accelerating structure deterioration.
2, in tarnishing processes, fatigue load does not have the adverse effect of reinforcing bar and concrete binding fatigue strength with corrosion
Consider, the collective effect of fatigue load and corrosion is all the factor for influencing reinforcing bar and concrete binding fatigue strength, in view of using
In reinforced concrete structure be all loaded work piece, need to consider the influence of fatigue load and corrosion to bonding fatigue strength.
The limitation of hardware condition is also the main reason for causing coupling that can not carry out in a deep going way.
Invention content
In order to overcome the shortcomings of that existing apparatus cannot achieve the defect of reinforced concrete member corrosion and drawing synchronous effect,
The present invention is intended to provide a kind of armored concrete adhesive section drawing fatigue and corrosion coupling test device, the experimental rig can have
Imitate drawing and fatigue test of the simulating reinforced concrete under corrosive medium and drawing fatigue coupling.
To achieve the goals above, the technical solution adopted in the present invention is：
A kind of armored concrete adhesive section drawing fatigue and corrosion coupling test device, are structurally characterized in that, including pass through
Upright supports and horizontally disposed limiting plate are fixed on the corrosion case for simulating drying and watering cycle environment, the corrosion on limiting plate
For placing armored concrete and corrosive medium in case, the reinforcing bar free end being provided in the middle part of the limiting plate for armored concrete is worn
The through-hole crossed, and it is equipped with percolator in through hole, it is equipped with the steel for making armored concrete below limiting plate or above corrosion case
The tired pulling pressing device that muscle free end shaft pulls down；It is equipped with conductive sheet in the corrosion case, the conductive sheet and armored concrete
Reinforcing bar is electrically connected by corresponding conducting wire with DC current instrument respectively.
As a result, by carrying out drawing fatigue and corrosion coupling test to armored concrete adhesive section simultaneously, steel can be both simulated
The axial fatigue of reinforced concrete component loads, but can simulating reinforced concrete pull-out test, while can simulate drying and watering cycle and
The corrosive environments such as submergence, can be widely applied to the durable Journal of Sex Research of concrete structure and material.
According to an embodiment of the invention, further optimization can also be made to the present invention, below the skill to be formed after optimization
Art scheme：
Preferably, according to an embodiment of the invention, the tired pulling pressing device is the fatigue loading dress being fixed on crossbeam
It sets, horizontally disposed pressing plate, connecting pole and bottom plate；The crossbeam is supported by support column, and the crossbeam is located above pressing plate；It is described
Pressing plate and bottom plate are fixedly linked by the connecting pole across limiting plate, the pressure head of the fatigue loading device and the platen pressure
Contact, the reinforcing bar free end of the bottom plate and the armored concrete is fixedly linked；The corrosion case is located at limiting plate and pressing plate
Between.Start fatigue loading device as a result, after the cycle-index of fatigue load, stress ratio, stress level, loading frequency are set,
The pressure of fatigue loading device passes to bottom plate by pressing plate, and bottom plate moves down to pull down the steel of the armored concrete in an axial direction
Muscle free end, achievees the purpose that fatigue loading, realizes transformation of the curved pressure fatigue load to tensile fatigue load.
As a kind of fixed concrete mode, bottom plate hole is provided on the bottom plate, the reinforcing bar free end of armored concrete is worn
It is anchored on the bottom plate by intermediate plate after crossing bottom plate hole.
In order to keep the tensile stress suffered by reinforcing bar free end more uniform, the connecting pole is more, and more connecting poles
Bottom end is uniformly arranged on the surrounding of bottom plate and reinforcing bar free end fixed connection place.
Alternatively form, the fatigue pulling pressing device is the stretching-machine being arranged below limiting plate, the stretching
The stretching end and the reinforcing bar free end of the armored concrete of machine are fixedly linked.As a result, directly the reinforcing bar of armored concrete from
The direct axial drop-down reinforcing bar free end of stretching-machine is passed through by end lower section.
Preferably, for more preferable simulation drying and watering cycle environment, the corrosion case is divided into liquid reserve tank and leaching by valve
Case upper layer and lower layer is steeped, and is connected to by the conduit with pump between liquid reserve tank and soaking box；The conductive sheet is arranged in soaking box.
It is closed in order to facilitate logical between control liquid reserve tank and soaking box, the valve includes metal valve plate with holes, is passed through
Spring is fixed on two electromagnet in valve plate upper and lower surface；In two electromagnet, an electromagnet is arranged in the hole of valve plate
The underface in the hole of valve plate is arranged in surface, another electromagnet.
For more preferable simulation drying and watering cycle environment, the pump is connected with a time set.
Preferably, the percolator be antiseepage piston, the antiseepage piston include slidably steel ring, be close-coupled at steel ring
The elastic rubber in interior outside, and the spring that is connected on elastic rubber.
Based on the same inventive concept, above-mentioned armored concrete adhesive section drawing fatigue is utilized the present invention also provides a kind of
The method that coupling test is carried out to armored concrete with corrosion coupling test device, which is characterized in that include the following steps：
S1, armored concrete adhesive section drawing fatigue is installed with after corrosion coupling test device, armored concrete is set
It is put in corrosion case, while the reinforcing bar free end of armored concrete being made to pass through the through-hole of corrosion bottom portion and limiting plate, and fix
Good percolator；
S2, conducting wire is connect with reinforcing bar and conductive plate respectively, reinforcing bar is respectively connected to directly as anode, conductive plate as cathode
Galvanic electricity stream instrument；
S3, the etchant solution configured is packed into corrosion case, and opens corrosive cycle system and armored concrete is carried out
Corrosion, while starting tired pulling pressing device axially drop-down reinforcing bar, simulate the coupling to the fatigue and corrosion of armored concrete.
Experimental rig is fixed according to sequential concatenation from bottom to top as a result, then armored concrete test specimen is placed in corrosion
In the middle part of case so that reinforcing bar free end passes through the hole in the middle part of corrosion bottom portion and limiting plate, and by reinforcing bar free end intermediate plate anchor
It is fixed in two middle part of steel plate.After antiseepage piston fixes, conducting wire is connect with reinforcing bar and stainless steel plate respectively, reinforcing bar is as sun
Pole, stainless steel plate are respectively connected to DC current instrument as cathode；Liquid reserve tank valve is opened, the etchant solution configured is packed into and is soaked
Case is steeped, liquid reserve tank valve is closed.Fatigue load size, loading frequency are finally inputted on fatigue loading controller；Start to load
While, corrosive cycle system is opened, with the coupling of simulation fatigue and corrosion.
In short, the present invention both can simulating reinforced concrete adhesive section corrosion and fatigue it is synchronous load, can also simulate reinforcing bar
The individually load of Analysis of Concrete Tensile fatigue, can effectively simulate the true service state of two kinds of materials；The present invention can simulate be harmful to from
Son corrodes the durability test with material under tired coupling.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the configuration of the present invention is simple, easy to disassemble and assembled, the setting of load conversion device realizes curved pressure fatigue load
Transformation to tensile fatigue load；
2, not only can simulating reinforced concrete component axial fatigue load, but also can simulating reinforced concrete pull-out test；
3, the corrosive environments such as drying and watering cycle and submergence can be simulated, the durability of concrete structure and material is can be widely applied to
Research.In addition each control of the invention operation carries out in control system, has intelligent control degree height, easy to operate etc. excellent
Point.
Below in conjunction with drawings and examples, the present invention is further elaborated.
Description of the drawings
Fig. 1 is the structure principle chart of one embodiment of the invention；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the corrosive cycle system structure diagram of this hair name；
Fig. 4 is the corrosive cycle system automatic valve structure schematic diagram of the present invention；
Fig. 5 is the vertical view of Fig. 4；
Fig. 6 is antiseepage piston structure schematic diagram of the present invention；
Fig. 7 is reinforcing bar free end anchor schematic diagram of the present invention.
Specific implementation mode
A kind of armored concrete adhesive section drawing fatigue and corrosion coupling test device, including bearing steelframe, fatigue loading
Device, armored concrete accelerated corrosion circulator, control device.Curved pressure fatigue loading system is located at draw-off gear and environment mould
The top of quasi- device, curved pressure fatigue loading system are controlled by fatigue loading controller, and environment simulator is connected with computer.Institute
Bearing steelframe is stated to be made of upper and lower two parts.Superstructure by four columns 5, as the steel plate 1 of pressing plate, as the steel of bottom plate
Plate 34 forms.Four columns 5 are arranged in regular quadrangle, and each column 5 is connect by bolt with steel plate 1, and pass through conduct
The steel plate 23 of limiting plate is connect by bolt with steel plate 34.Substructure is made of four columns 6, steel plate 23；Four columns
6 arrange in regular quadrangle, and each column 6 is connect with earth anchor by foundation bolt, fixed on the ground.Steel plate 34 is located at steel plate
23 lower section, quadrangle are fixedly arranged in four columns 5；The quadrangle of steel plate 23 is fixedly arranged at four 6 tops of column, in steel plate 23
Trepanning at the heart, thus hole passes through test specimen reinforcing bar, is connect with steel plate 34.The loading system is by fatigue loading device 1, crossbeam 9
And two support column 10 form.Fatigue loading device is secured by bolts in 9 middle part of crossbeam, and 9 both ends of crossbeam pass through bolt and support
10 upper end of column consolidates, and ground is fixed in 10 lower end of support column.The corrosive cycle system is by corrosion case, stainless steel plate, direct current
Flow instrument, pump, timer, conduit, valve composition.Corrosion case 8 is placed in 23 top of steel plate, corrodes and fills corrosive medium inside case, no
Rust steel disc 804 is fixed on corrosion bottom portion；Corrode the middle part of case 8 and partition board is set, corrosion case 8 is divided for upper layer and lower layer, lower layer is leaching
Case is steeped, upper layer is liquid reserve tank.Circulator is made of pump, time set, conduit and valve.Pump 807 and valve 802 respectively with meter
When device be connected, the corrosive medium of soaking box is pumped into liquid reserve tank through conduit, and drying and watering cycle environment is simulated with this.On on the left of soaking box
Portion is provided with conducting wire fairlead, and the conducting wire being connected with reinforcing bar and the conducting wire being connected with stainless steel substrates pass through this hole and DC current instrument
Positive and negative anodes be connected；Corrode 8 bottom opening of case, aperture center axis is overlapped with 23 aperture center axis of steel plate, corrosion bottom portion
Center hole goes out to be sealed by antiseepage piston 7.The percolator is slidably steel ring 703, elastic rubber 702 and spring 701
Combined member.Spring 701 is connected with elastic rubber 702, and steel ring 703 and elastic rubber are closely coupled；Use anti-in percolator periphery
Rotten coating package.
As shown in Figure 1, the control system includes computer 14, fatigue loading controller 15.Control system is located at device
It is external；DC current instrument 13, time set 12 are connected by data line with computer；Fatigue loading system is controlled by fatigue loading
Device controls.Computer 14 receives the data on timer, comes the beginning and end of control corrosion rate cycle；Fatigue loading controller control
The cycle-index of fatigue load processed, stress ratio, stress level, loading frequency.
The basic parameter of the present apparatus includes：Application fatigue load range be 0~25kN, loading frequency ranging from 0~15Hz,
Current strength ranging from 0~5A, the specification for corroding case are long 210mm, wide 210mm, high 230mm；Corrosive medium is harmful ion
The specification of solution, stainless steel substrates is long 40mm, wide 20mm, high 20mm.
Fig. 3,4,5 show corrosive cycle system structure diagram, and corrosion case 8 is divide into upper part and lower part, and top is liquid storage
Case 801, lower part are soaking box 803.Liquid storage upper box part be equipped with water inlet, bottom be equipped with automatic valve, valve 802 by it is with holes not
Become rusty steel valve plate 8022, electromagnet 8021 and the composition of spring 8023.Soaking box left upper portion is equipped with conducting wire fairlead, in lower right side
Equipped with water outlet, conduit 806 is connected with pump, and corrosive medium is flowed out by soaking box, flows into liquid reserve tank through conduit, completes corrosive cycle
Process.It is coated with anti-corrosion material inside corrosion case.
As shown in fig. 6, the antiseepage piston 7 is made of spring 701, elastic rubber 702, steel ring 703.Spring and elastic rubber
Glue is connected, and steel ring is closely coupled with elastic rubber.Antiseepage piston exterior is coated with anti-corrosion material.
Fig. 7 is the structural schematic diagram of the intermediate plate 11 of the present invention, and intermediate plate 11 is used for anchor bar concrete free end.
When experiment, concrete operations flow is as follows：
1, it spells fixation according to sequence from bottom to top and connects experimental rig, then armored concrete test specimen is placed in corrosion case
Portion so that reinforcing bar free end passes through the hole at 34 middle part of corrosion 8 bottom of case and steel plate, and reinforcing bar free end is anchored with intermediate plate
In 23 middle part of steel plate.
2, after antiseepage piston 7 fixes, conducting wire is connect with reinforcing bar and stainless steel plate respectively, reinforcing bar is as anode, stainless
Steel plate is respectively connected to DC current instrument as cathode；Liquid reserve tank valve is opened, the etchant solution configured is packed into soaking box
803, close liquid reserve tank valve.
3, fatigue load size, loading frequency are inputted on fatigue loading controller.While starting load, corrosion is opened
The circulatory system, with the coupling of simulation fatigue and corrosion.
The experimental subjects of the present invention is armored concrete, if to be stretched, it is necessary to fixing concrete and steel respectively
Muscle can not be fixed due to the limitation of cartridge device with concrete, therefore be cannot achieve the present invention and stretched to armored concrete.
In conclusion the advantage of the invention is that：1, simple in structure, easy to disassemble and assembled, load conversion device is set
Set the transformation for realizing curved pressure fatigue load to tensile fatigue load；2, both can the axial fatigue of simulating reinforced concrete component add
Carry, but can simulating reinforced concrete pull-out test；3, the corrosive environments such as drying and watering cycle and submergence can be simulated, can be widely applied to
The durable Journal of Sex Research of concrete structure and material.In addition each control of the invention operation carries out in control system, has intelligence
Energy controlling extent is high, simple operation and other advantages.
The content that above-described embodiment illustrates should be understood as that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the invention, after having read the present invention, various equivalent forms of the those skilled in the art to the present invention
Modification each fall within the application range as defined in the appended claims.
Claims (17)
1. a kind of armored concrete adhesive section drawing fatigue and corrosion coupling test device, which is characterized in that including passing through column
（6）Support and horizontally disposed limiting plate（3）, it is fixed on limiting plate（3）On corrosion case for simulating drying and watering cycle environment
（8）, the corrosion case（8）It is interior to be used to place armored concrete and corrosive medium, the limiting plate（3）Middle part is provided with for reinforced concrete
The through-hole that the reinforcing bar free end of soil passes through, and it is equipped with percolator in through hole, in limiting plate（3）Lower section or corrosion case（8）On
Side, which is equipped with, makes the tired pulling pressing device that the reinforcing bar free end shaft of armored concrete pulls down；The corrosion case（8）It is interior to be equipped with conduction
Piece（804）, the conductive sheet（804）Pass through corresponding conducting wire and DC current instrument respectively with the reinforcing bar of armored concrete（13）It is electrically connected
It connects；
The percolator is antiseepage piston（7）, the antiseepage piston（7）Including slidably steel ring（703）, be close-coupled at steel ring
（703）The elastic rubber in interior outside（702）, and it is connected to elastic rubber（702）On spring（701）.
2. armored concrete adhesive section drawing fatigue according to claim 1 exists with corrosion coupling test device, feature
In the fatigue pulling pressing device is to be fixed on crossbeam（9）On fatigue loading device（1）, horizontally disposed pressing plate（2）, connection
Column（5）And bottom plate（4）；The crossbeam（9）By support column（10）Support, and the crossbeam（9）Positioned at pressing plate（2）Top；The pressure
Plate（2）And bottom plate（4）By passing through limiting plate（3）Connecting pole（5）It is fixedly linked, the fatigue loading device（1）Pressure head
With the pressing plate（2）Pressure contact, the bottom plate（4）It is fixedly linked with the reinforcing bar free end of the armored concrete；The corruption
Lose case（8）Positioned at limiting plate（3）With pressing plate（2）Between.
3. armored concrete adhesive section drawing fatigue according to claim 2 exists with corrosion coupling test device, feature
In the bottom plate（4）On be provided with bottom plate hole, the reinforcing bar free end of armored concrete passes through intermediate plate after passing through bottom plate hole（11）Anchoring
In the bottom plate（4）On.
4. armored concrete adhesive section drawing fatigue according to claim 2 exists with corrosion coupling test device, feature
In the connecting pole（5）It it is more, and more connecting poles（5）Bottom end be uniformly arranged on bottom plate（4）It is fixed with reinforcing bar free end
The surrounding of junction.
5. armored concrete adhesive section drawing fatigue according to claim 1 exists with corrosion coupling test device, feature
In the fatigue pulling pressing device is to be arranged in limiting plate（3）The stretching-machine of lower section, the stretching end of the stretching-machine and the reinforcing bar are mixed
The reinforcing bar free end for coagulating soil is fixedly linked.
6. armored concrete adhesive section drawing fatigue according to any one of claims 1-5 and corrosion coupling test dress
It sets, which is characterized in that the corrosion case（8）Pass through valve（802）It is divided into liquid reserve tank（801）And soaking box（803）Upper and lower two
Layer, and liquid reserve tank（801）And soaking box（803）Between pass through band pump（807）Conduit（806）Connection；The conductive sheet（804）
It is arranged in soaking box（803）It is interior.
7. armored concrete adhesive section drawing fatigue according to claim 6 exists with corrosion coupling test device, feature
In the valve（802）Including metal valve plate with holes（8022）, pass through spring（8023）It is fixed on valve plate（8022）Upper following table
Two electromagnet on face（8021）；Two electromagnet（8021）In, an electromagnet（8021）It is arranged in valve plate（8022）'s
The surface in hole, another electromagnet（8021）It is arranged in valve plate（8022）Hole underface.
8. armored concrete adhesive section drawing fatigue according to claim 6 exists with corrosion coupling test device, feature
In the pump（807）With a time set（12）It is connected.
9. a kind of couple armored concrete with corrosion coupling test device using armored concrete adhesive section drawing fatigue
The method of experiment, which is characterized in that the armored concrete adhesive section drawing fatigue includes passing through with corrosion coupling test device
Column（6）Support and horizontally disposed limiting plate（3）, it is fixed on limiting plate（3）On corrosion for simulating drying and watering cycle environment
Case（8）, the corrosion case（8）It is interior to be used to place armored concrete and corrosive medium, the limiting plate（3）Middle part is provided with mixed for reinforcing bar
The through-hole that the reinforcing bar free end of soil passes through is coagulated, and percolator is equipped in through hole, in limiting plate（3）Lower section or corrosion case（8）
Top, which is equipped with, makes the tired pulling pressing device that the reinforcing bar free end shaft of armored concrete pulls down；The corrosion case（8）Interior be equipped with is led
Electric piece（804）, the conductive sheet（804）Pass through corresponding conducting wire and DC current instrument respectively with the reinforcing bar of armored concrete（13）Electricity
Connection；
The method for carrying out coupling test to armored concrete includes the following steps：
S1, armored concrete adhesive section drawing fatigue is installed with after corrosion coupling test device, armored concrete is placed in
Corrode case（8）It is interior, while the reinforcing bar free end of armored concrete being made to pass through corrosion case（8）Bottom and limiting plate（3）Through-hole, and
Fix percolator；
S2, conducting wire is connect with reinforcing bar and conductive plate respectively, reinforcing bar is respectively connected to direct current as anode, conductive plate as cathode
Flow instrument；
S3, the etchant solution configured is packed into corrosion case, and opens corrosive cycle system and armored concrete is corroded,
Start tired pulling pressing device axially drop-down reinforcing bar simultaneously, simulates the coupling to the fatigue and corrosion of armored concrete.
10. the method according to claim 9 for carrying out coupling test to armored concrete, which is characterized in that the fatigue
Pulling pressing device is to be fixed on crossbeam（9）On fatigue loading device（1）, horizontally disposed pressing plate（2）, connecting pole（5）And bottom plate
（4）；The crossbeam（9）By support column（10）Support, and the crossbeam（9）Positioned at pressing plate（2）Top；The pressing plate（2）And bottom plate
（4）By passing through limiting plate（3）Connecting pole（5）It is fixedly linked, the fatigue loading device（1）Pressure head and the pressing plate
（2）Pressure contact, the bottom plate（4）It is fixedly linked with the reinforcing bar free end of the armored concrete；The corrosion case（8）It is located at
Limiting plate（3）With pressing plate（2）Between.
11. the method according to claim 10 for carrying out coupling test to armored concrete, which is characterized in that the bottom plate
（4）On be provided with bottom plate hole, the reinforcing bar free end of armored concrete passes through intermediate plate after passing through bottom plate hole（11）It is anchored at the bottom plate
（4）On.
12. the method according to claim 10 for carrying out coupling test to armored concrete, which is characterized in that the connection
Column（5）It it is more, and more connecting poles（5）Bottom end be uniformly arranged on bottom plate（4）With the four of reinforcing bar free end fixed connection place
Week.
13. the method according to claim 9 for carrying out coupling test to armored concrete, which is characterized in that the fatigue
Pulling pressing device is to be arranged in limiting plate（3）The stretching-machine of lower section, the reinforcing bar at the stretching end and the armored concrete of the stretching-machine
Free end is fixedly linked.
14. the method for carrying out coupling test to armored concrete according to any one of claim 9-13, feature exist
In the corrosion case（8）Pass through valve（802）It is divided into liquid reserve tank（801）And soaking box（803）Upper layer and lower layer, and liquid reserve tank
（801）And soaking box（803）Between pass through band pump（807）Conduit（806）Connection；The conductive sheet（804）Setting is being impregnated
Case（803）It is interior.
15. the method according to claim 14 for carrying out coupling test to armored concrete, which is characterized in that the valve
（802）Including metal valve plate with holes（8022）, pass through spring（8023）It is fixed on valve plate（8022）Two in upper and lower surface
Electromagnet（8021）；Two electromagnet（8021）In, an electromagnet（8021）It is arranged in valve plate（8022）Hole surface,
Another electromagnet（8021）It is arranged in valve plate（8022）Hole underface.
16. the method according to claim 14 for carrying out coupling test to armored concrete, which is characterized in that the pump
（807）With a time set（12）It is connected.
17. the method for carrying out coupling test to armored concrete according to any one of claim 9-13, feature exist
In the percolator is antiseepage piston（7）, the antiseepage piston（7）Including slidably steel ring（703）, be close-coupled at steel ring
（703）The elastic rubber in interior outside（702）, and it is connected to elastic rubber（702）On spring（701）.
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| CN101251468B (en) * | 2008-03-26 | 2011-09-07 | 深圳大学 | Loading equipment for corrosion test of concrete sample with stress action |
| CN102128745B (en) * | 2010-12-30 | 2012-08-29 | 中交第一公路勘察设计研究院有限公司 | Fixture of test piece for testing inter-laminar drawing fatigue of pavement and testing method thereof |
| CN104122201B (en) * | 2014-07-01 | 2016-09-07 | 三峡大学 | A kind of armored concrete bond stress and sliding measurement apparatus |
| CN104502274B (en) * | 2014-12-15 | 2017-08-29 | 深圳大学 | The loading device of armored concrete bonding sample corrosion test under stress |
| CN204422395U (en) * | 2015-03-17 | 2015-06-24 | 三峡大学 | Bi-directional compression steel bar concrete pulling pulling device |
| CN204855338U (en) * | 2015-08-11 | 2015-12-09 | 攀枝花学院 | Digital concrete reinforcement adhesion stress detection device |
| CN205483787U (en) * | 2016-03-07 | 2016-08-17 | 长沙理工大学 | Reinforced concrete bonding section drawing fatigue and corrosion coupling test device |
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