CN104502212B - The loading device of concrete sample corrosion test under stress - Google Patents
The loading device of concrete sample corrosion test under stress Download PDFInfo
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- CN104502212B CN104502212B CN201410778474.9A CN201410778474A CN104502212B CN 104502212 B CN104502212 B CN 104502212B CN 201410778474 A CN201410778474 A CN 201410778474A CN 104502212 B CN104502212 B CN 104502212B
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- lever
- knife
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- connecting rod
- loading device
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- 230000007797 corrosion Effects 0.000 title claims abstract description 24
- 238000005260 corrosion Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 52
- 238000003825 pressing Methods 0.000 claims description 20
- 241001504664 Crossocheilus latius Species 0.000 claims description 15
- 238000005303 weighing Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 229910001651 emery Inorganic materials 0.000 claims description 2
- 239000010977 jade Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The invention discloses a kind of loading device of concrete sample corrosion test under stress, including frame, load maintainer, force transmission mechanism, specimen holder and the container of corrosive liquid is contained, force transmission mechanism is connected by connecting rod with specimen holder.Specimen holder includes pressue device and adjusting means, and adjusting means includes control circuit, servomotor and lift；Lift is driven by servomotor, and servomotor is connected with control circuit；Connecting rod described in one termination of pressue device, another termination lift.Control circuit of the invention is monitored to load maintainer, and the state according to load maintainer automatically adjusts the height of lift, and concrete sample stress relaxation can be compensated automatically, keeps concrete sample stress constant.
Description
[technical field]
The present invention relates to the loading device of concrete erosion experiment, more particularly to a kind of concrete sample is under stress
The loading device of corrosion test.
[background technology]
Bearing load is main mission and inherent characteristic of the concrete as structure function material, and the presence of load can cause
Concrete is crept and relaxes, causes concrete not up to destroying before its due ultimate bearing capacity, influence concrete
The permanent performance of structure and security.Furthermore, because early stage people recognize unclear, attention not enough to the durability of concrete structure,
Adverse circumstances residing for concrete structure will produce influence to every mechanical property of concrete structure, be formed to concrete structure
Environmental corrosion, and the size of load and form can further influence environmental corrosion to the degradation speed of concrete structure.It is defined
Mechanical property of the concrete structure after stress and context synchronization corrosion really is analyzed, stress is understood and is made with the coupling of environmental corrosion
It is most important with the influence to mechanical performance of concrete, corresponding corrosion device need to be used.At present, people devise various stress
The device of corrosion, stress corrosion device seen by the market employ spring structure, machine driven system, hydraulic control system or
Counterweight applies pulling force or pressure to test specimen, has related parameter by what instrument measured concrete component in lasting loading procedure.But this
A little devices are not directed to the coupling with environmental corrosion mostly, and have the disadvantage that：
Spring or machine driven system are by prolonged stretching or compression, it may appear that stress relaxation, load is gradually reduced,
Influence loading accuracy, the analytic band to result of the test carrys out larger difficulty.
The deformation of member caused by concrete creep, further increase spring or machine driven system loading device should
Power relaxes.
The stress corrosion device of hydraulic system needs to design corresponding control system, and design is complicated, high cost.
The patent of invention of Patent No. 200810066321.6 discloses a kind of concrete sample and corrodes under stress
The loading equipemtn of experiment, including frame, graduated entablature, sill, loading counterweight, transmission rod, upper reinforcing Kun and it is lower plus
Power Kun, one end of the entablature is hinged with frame side, other end suspension loading counterweight, and centre has along entablature longitudinal sliding motion
Top shoe；Described concrete sample is placed between reinforcing Kun and lower reinforcing Kun, and the bottom of transmission rod is by upper reinforcing Kun
Power transmission in concrete sample, lower reinforcing Kun by frame base support, described sill is located at below entablature, its one end
With same frame opposite side chain connection, described top shoe is pressed in the top of sill, and sill is pressed in the top of transmission rod.Should
Invention can overcome the Stress relaxation that spring exerts a force, but this loading equipemtn to have the following disadvantages in use：1) use
Two reinforcing Kun apply stress, it is necessary to using two scales, the size of force is not directly perceived, and Stress calculation is cumbersome, while
Sill needs to set scale, and rigidity is relatively low, it is impossible to apply larger stress to test specimen；2) force application apparatus are hinged using common
Mode, the precision of force is relatively low；3) the automatic compensation to concrete sample stress relaxation cannot be realized.
[content of the invention]
The technical problem to be solved in the present invention be to provide it is a kind of concrete sample stress relaxation is compensated automatically, keep
The loading device of concrete sample stress constant concrete sample corrosion test under stress.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that a kind of concrete sample is in stress
The loading device of lower corrosion test, including frame, load maintainer, force transmission mechanism, specimen holder and contain corrosive liquid container,
Force transmission mechanism is connected by connecting rod with specimen holder, and specimen holder includes pressue device and adjusting means, and adjusting means includes
Control circuit, servomotor and lift；Lift is driven by servomotor, and servomotor is connected with control circuit；Pressurization dress
The connecting rod described in a termination put, another termination lift；Control circuit is monitored to load maintainer, according to load maintainer
State automatically adjust the height of lift.
Above-described loading device, force transmission mechanism includes reinforcing lever and connecting rod, and load maintainer is to be with measuring lever
The leverage of weighing of main body, reinforcing lever arrangement reinforces lever by reinforcing the fulcrum pivot of lever in the lower section of measuring lever
Group is held to be hinged with frame；The upper end of connecting rod is held with the emphasing knife of measuring lever and is connected, and group is held in lower end by reinforcing lever arm of force knife
End with reinforcing lever is hinged；Specimen holder by reinforce the emphasing knife of lever hold group with reinforce lever be hinged.
Above-described loading device, leverage of weighing include scale frame, increase stone roller, stone roller hang and, sliding weight and described metering
Lever, scale frame is fixed on the top of frame, and measuring lever holds group and is hinged with scale frame by measuring lever fulcrum pivot, and stone roller is hung by stone roller
Hang knife and hold the end that group is suspended on the measuring lever arm of force long；The big of loading capacity is changed by the position for increasing and decreasing stone roller and adjustment sliding weight
It is small.
Above-described loading device, upper rack includes entablature, and the fulcrum pivot of reinforcing lever holds and is fixed on entablature
Lower section, the fulcrum pivot for reinforcing lever is fixed on reinforcing lever；The connecting rod is adjustable in length connecting rod.
Above-described loading device, the base of frame includes sill, and lift is fixed on sill；Lift
Top includes lifter plate and plural root post, and the lower end of column is fixed on lifter plate；Specimen holder include connector, pull bar,
Arm-tie, supporting plate, pressing plate and complex root pulling force screw rod, the periphery of pressing plate include a plurality of legholes, and column passes through leghole, column
Upper end screw thread on be rotary with nut pressing plate be fixed on column；Pressing plate includes a plurality of screw holes, the lower end of pulling force screw rod
It is fixed on supporting plate, through the screw hole of pressing plate, upper end is fixed with arm-tie on top；The middle part of arm-tie is fixed with pull bar, pull bar
Upper end is connected with connector, and the top of connector is connected with described connecting rod；Described concrete sample is placed on supporting plate with pressure
Between plate.
Above-described loading device, described container is placed between lifter plate and pressing plate, concrete sample and supporting plate cloth
Put in a reservoir.
Above-described loading device, connector includes connection fork, spherical sleeve and bearing pin, and the end for connecting fork includes spiral shell
Pit, in the screwed hole for screwing into connection fork of pull bar upper end；Connecting the fork of fork includes pin-and-hole, and one end of connecting rod is wrapped
External screw thread is included, the other end includes sphere hole, and spherical sleeve is arranged in sphere hole, outer surface and the sphere hole of spherical sleeve are fitted
Match somebody with somebody；Bearing pin combines connecting rod with fork is connected through the pin-and-hole of connection fork and the endoporus of spherical sleeve；Outside connecting rod
It is threaded into the screwed hole that the emphasing knife of reinforcing lever holds.
Above-described loading device, the fulcrum pivot for reinforcing lever holds and reinforce the emphasing knife of lever and holds and respectively include U-shaped
Knife bearing, two pieces of connecting plates and two pieces of knife supporting blocks, U-shaped knife bearing include connecting portion and two blocks of side plates, and connecting portion includes screwed hole,
Side plate is hook-type, and knife supporting block is fixed on the inner side of side plate gib head, and the opening of side plate is linked into an integrated entity by connecting plate；Reinforcing lever
The emphasing knife of fulcrum pivot and reinforcing lever is separately fixed in the fulcrum tool bore and emphasis tool bore of reinforcing lever.
Above-described loading device, adjusting means includes worm type of reduction gearing；Lift passes through snail by servomotor
Worm and gear decelerator drives；Control circuit includes controller and two position sensors, and two position sensors are arranged in scale frame
On foresight position, respectively above and below measuring lever；Two signal output parts of position sensor connect control respectively
Device processed, the output servo motor termination of controller；Two position sensors obtain the positional information of measuring lever respectively, by watching
The height that motor adjusts lift is taken, realizes that test specimen corrosion stress is constant.
Above-described loading device, in downward projection face, measuring lever is 10-20 ° with the angle of reinforcing lever；Weigh
Leverage includes counterweight, and counterweight is arranged on the end of the short arm of force of measuring lever
The control circuit of loading device of the present invention is monitored to load maintainer, and the state according to load maintainer is automatically adjusted
The height of lift, can automatically be compensated concrete sample stress relaxation, keep concrete sample stress constant.
[brief description of the drawings]
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure chart of embodiment of the present invention loading device.
Fig. 2 is the top view of embodiment of the present invention loading device.
Fig. 3 is the partial enlarged drawing at I position in Fig. 1.
Fig. 4 is the front view that the embodiment of the present invention reinforces lever.
Fig. 5 is the top view that the embodiment of the present invention reinforces lever.
Fig. 6 is the front view that the embodiment of the present invention reinforces lever knife bearing.
Fig. 7 is A in Fig. 6 to sectional view.
Fig. 8 is the front view that the embodiment of the present invention reinforces lever knife supporting block.
Fig. 9 is the top view that the embodiment of the present invention reinforces lever knife supporting block.
Figure 10 is the front view of embodiment of the present invention reinforcing balance pivot knife and emphasing knife.
Figure 11 is the left view of embodiment of the present invention reinforcing balance pivot knife and emphasing knife.
Figure 12 is embodiment of the present invention control principle block diagram.
[specific embodiment]
Structure such as Fig. 1 to Figure 11 of concrete sample of the present invention loading device embodiment of corrosion test under stress
It is shown, including frame 1, load maintainer, force transmission mechanism, specimen holder and contain corrosive liquid container.Force transmission mechanism is by connecting
Extension bar is connected with specimen holder, and specimen holder includes pressue device and adjusting means, and adjusting means includes control circuit, servo electricity
Machine and lift；Lift is driven by servomotor, and servomotor is connected with control circuit；One end of pressue device connects in succession
Bar, another termination lift；Control circuit is monitored to load maintainer, and the state according to load maintainer automatically adjusts lift
Height.
Force transmission mechanism includes reinforcing lever 10 and connecting rod 14.
Load maintainer is based on the leverage of weighing of measuring lever 2.
Measuring lever 2 mutually staggers with reinforcing lever 10, in downward projection face, the folder of measuring lever 2 and reinforcing lever 10
Angle α is 13 °.
Weigh leverage also include scale frame 3, increase stone roller 4, stone roller hang 5, counterweight 6 and with sliding weight 7.Scale frame 3 is fixed on frame 1
Top, measuring lever 2 holds group and is hinged (measuring lever fulcrum pivot hold group not shown) with scale frame 3 by measuring lever fulcrum pivot,
Stone roller hangs 5 and holds the end that group 30 is suspended on the arm of force long of measuring lever 2 by cutting or polish jade with an emery wheel extension knife.
Reinforcing lever 10 is arranged in the lower section of measuring lever 2, and reinforcing lever 10 holds group and machine by reinforcing balance pivot knife
Frame 1 is hinged.Specimen holder by reinforce lever emphasing knife hold group with reinforce lever 10 be hinged.
Reinforce the structure of lever 10 as shown in Figure 4 and Figure 5, including fulcrum tool bore 1001, emphasis tool bore 1002 and reinforcing thick stick
Stick force arm tool bore 1003.The fulcrum pivot 8 and emphasing knife 9 for reinforcing lever 10 are separately fixed at the fulcrum tool bore 1001 of reinforcing lever 10
In emphasis tool bore 1002, reinforcing lever arm of force tool bore 1003 is fixed with reinforcing lever arm of force knife.
The emphasing knife that the fulcrum pivot of reinforcing lever 10 held and reinforced lever 10 holds respectively 11, two pieces of companies of knife bearing including U-shaped
Fishplate bar 12 and two pieces of knife supporting blocks 13, U-shaped knife bearing include connecting portion 1101 and two blocks of side plates 1102, and connecting portion has a screwed hole
1103, side plate 1102 is hook-type, and knife supporting block 14 is fixed on the inner side of the gib head of side plate 1102, and the opening of side plate 1102 is by connecting plate 12
It is connected by screw integral.
Measuring lever 2 transmits the force to reinforce lever 10 by connecting rod 14, and connecting rod 14 is adjustable in length connecting rod.
The knife that group is held in the upper end of connecting rod 14 with the emphasing knife of measuring lever holds 25 and is connected, and lower end is by reinforcing lever arm of force knife
Group 26 is held to be hinged with the end of the reinforcing arm of force of lever 10.
A piece entablature 101 is arranged at the top of frame 1, and the knife bearing 11 that reinforcing balance pivot knife holds is fixed on by screw 15
The lower section of crossbeam 101.
There is a sill 102 on the base of frame 1, lift 31 is fixed on sill.
Lift 31 is driven by servomotor 32 by worm type of reduction gearing.Control circuit includes controller and two positions
Sensor 33 is put, two position sensors 33 are arranged at the foresight 310 of scale frame 3, respectively positioned at the top of measuring lever 2 with
Side.
As shown in figure 12, the signal output part of two position sensors 33 connects controller, the output termination of controller respectively
Servomotor 32；Two position sensors 33 obtain the positional information of measuring lever 2 respectively, it is necessary to when adjusted by servomotor 32
The height of whole lift 31, realizes that test specimen corrosion stress is constant.
The top of lift 31 includes the root post 35 of lifter plate 34 and 4, and the lower end of column 35 is fixed on lifter plate 34.
Specimen holder includes connector, pull bar 37, arm-tie 38, supporting plate 39, pressing plate 40 and 4 pulling force screw rods 41.Pressing plate 40
Corner have 4 legholes, column 35 passes through leghole, nut 42 is rotary with the screw thread of the upper end of column 35 and consolidates pressing plate 40
It is scheduled on column 35.
Pressing plate 40 also includes 4 screw holes, and the lower end of pulling force screw rod 41 is fixed on supporting plate 39, and top passes through pressing plate 40
Screw hole, the upper end of pulling force screw rod 41 is fixed by nut 43 with arm-tie 38.
The middle part of arm-tie 38 is fixed with the lower end of pull bar 37, and the upper end of pull bar 37 is connected with connector, the top of connector
It is connected with connecting rod 19.Concrete sample 100 is placed between supporting plate 39 and pressing plate 40.
Container 28 equipped with corrosive liquid is placed between lifter plate 34 and pressing plate 40, and concrete sample 100 and supporting plate 39 soak
Enter in container 28.
Connector includes connection fork 20, spherical sleeve 21 and bearing pin 22, and there are a screwed hole, coagulation in the end of connection fork 20
In the screwed hole for screwing into connection fork 20 of the upper end of soil sample reinforcing bar 200.The fork of connection fork 20 has a pin-and-hole, connects
There is external screw thread one end of bar 19, and the other end has a sphere hole, and spherical sleeve 21 is arranged in the sphere hole of connecting rod 19, ball
The outer surface of surface sleeve 21 is adapted to sphere hole, and both constitute universal coupling.Pin-and-hole and sphere of the bearing pin 22 through connection fork 20
The endoporus of sleeve 21, connecting rod 19 is combined with fork 20 is connected.Screwing into for connecting rod 19 reinforces lever emphasis
Knife is held in the screwed hole of knife bearing 11.
Test specimen 100 is soaked in the container 28 equipped with corrosive liquid, to realize the accelerated deterioration of test specimen.Before loading, first lead to
Overbalance hammer 6 adjusts initial zero balance, and power arm one end of measuring lever 2 hangs 5 by stone roller can hang increasing stone roller 4, by regulation
The length of adjustable link 14 can change the height and position of specimen holder connector.
Measuring lever 2 changes the size of loading capacity and can directly read lotus by increasing and decreasing stone roller 4 and mobile adjustment sliding weight 7
The loading capacity of load.
The fulcrum and hard point of measuring lever 2 and reinforcing lever 10 all use knife bearing structure.
Above example of the present invention uses the fulcrum and hard point of above-mentioned multi-grade lever structure, large and small lever all to use knife
With knife bearing structure, frictional resistance is small, power transmission high precision, and compared with existing stress corrosion device, the device volume is small, make letter
List, low cost, rigidity are big, high precision, operate more simple, and stress corrosion of the realizations to component is amplified by two grades of lever,
Hold load stress amplitude to significantly improve, larger test specimen can be applicable.
The specimen holder of above example of the present invention includes pressue device and adjusting means, claims by installed in measuring lever
The measuring lever positional information that the location sensitive position sensor of adjacent measuring lever foresight is obtained on frame adjusts lift
Highly, it can be ensured that apply constant corrosion stress, eliminate the lax of corrosion stress, realize the electrical servo function of stress loading.
Claims (8)
1. a kind of loading device of concrete sample corrosion test under stress, including frame, load maintainer, power transmission machine
The container of structure, specimen holder and splendid attire corrosive liquid, force transmission mechanism is connected by connecting rod with specimen holder, it is characterised in that
Specimen holder includes pressue device and adjusting means, and adjusting means includes control circuit, servomotor and lift；Lift by
Servomotor drives, and servomotor is connected with control circuit；Connecting rod described in one termination of pressue device, another termination lifting
Machine；Control circuit is monitored to load maintainer, and the state according to load maintainer automatically adjusts the height of lift；Force transmission mechanism
Including reinforcing lever and connecting rod, load maintainer is the leverage of weighing based on measuring lever, and reinforcing lever arrangement is in meter
Measure lever lower section, reinforcing lever by reinforce the fulcrum pivot of lever hold group be hinged with frame；The upper end of connecting rod and measuring lever
Emphasing knife hold connection, lower end is held group by reinforcing lever arm of force knife and is hinged with the end for reinforcing lever；Specimen holder is by adding
The emphasing knife of power lever holds group and is hinged with reinforcing lever；The base of frame includes sill, and lift is fixed on sill；Rise
The top of drop machine includes lifter plate and plural root post, and the lower end of column is fixed on lifter plate；Specimen holder include connector,
Pull bar, arm-tie, supporting plate, pressing plate and complex root pulling force screw rod, the periphery of pressing plate include a plurality of legholes, and column passes through column
Hole, is rotary with nut and pressing plate is fixed on column on the screw thread of the upper end of column；Pressing plate includes a plurality of screw holes, pulling force screw rod
Lower end be fixed on supporting plate, top through pressing plate screw hole, upper end is fixed with arm-tie；The middle part of arm-tie is fixed with pull bar,
The upper end of pull bar is connected with connector, and the top of connector is connected with described connecting rod；Described concrete sample is placed on support
Between plate and pressing plate.
2. loading device according to claim 1, it is characterised in that leverage of weighing include scale frame, increase stone roller, stone roller hang,
Sliding weight and described measuring lever, scale frame are fixed on the top of frame, and measuring lever holds group and scale by measuring lever fulcrum pivot
Frame is hinged, and stone roller is hung and holds the end that group is suspended on the measuring lever arm of force long by cutting or polish jade with an emery wheel extension knife；By increasing and decreasing stone roller and adjusting sliding weight
Position changes the size of loading capacity.
3. loading device according to claim 1, it is characterised in that upper rack includes entablature, reinforces the branch of lever
Point knife is held and is fixed on entablature lower section, and the fulcrum pivot for reinforcing lever is fixed on reinforcing lever；The connecting rod is adjustable in length
Connecting rod.
4. loading device according to claim 1, it is characterised in that described container is placed between lifter plate and pressing plate,
Concrete sample and supporting plate arrangement are in a reservoir.
5. loading device according to claim 1, it is characterised in that connector includes connection fork, spherical sleeve and bearing pin,
Connecting the end of fork includes screwed hole, in the screwed hole for screwing into connection fork of pull bar upper end；The fork for connecting fork includes
Pin-and-hole, one end of connecting rod includes external screw thread, and the other end includes sphere hole, and spherical sleeve is arranged in sphere hole, spherical sleeve
Outer surface be adapted to sphere hole；Bearing pin through connection fork pin-and-hole and spherical sleeve endoporus, by connecting rod be connected fork group
It is combined；In the screwed hole that the emphasing knife for screwing into reinforcing lever of connecting rod holds.
6. loading device according to claim 1, it is characterised in that the fulcrum pivot of reinforcing lever holds and reinforce the weight of lever
Point knife holds respectively the knife bearing including U-shaped, two pieces of connecting plates and two pieces of knife supporting blocks, and U-shaped knife bearing includes connecting portion and two blocks of side plates,
Connecting portion includes screwed hole, and side plate is hook-type, and knife supporting block is fixed on the inner side of side plate gib head, and the opening of side plate is connected by connecting plate
Integrally；The emphasing knife of the fulcrum pivot and reinforcing lever that reinforce lever is separately fixed at the fulcrum tool bore and emphasing knife of reinforcing lever
Kong Zhong.
7. loading device according to claim 2, it is characterised in that adjusting means includes worm type of reduction gearing；Lifting
Machine is driven by servomotor by worm type of reduction gearing；Control circuit includes controller and two position sensors, two positions
Foresight position of the sensor arrangement on scale frame is put, respectively above and below measuring lever；Two position sensors
Signal output part connects controller, the output servo motor termination of controller respectively；Two position sensors obtain metering thick stick respectively
The positional information of bar, the height of lift is adjusted by servomotor, realizes that test specimen corrosion stress is constant.
8. loading device according to claim 2, it is characterised in that in downward projection face, measuring lever and reinforcing lever
Angle be 10-20 °；Leverage of weighing includes counterweight, and counterweight is arranged on the end of the short arm of force of measuring lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410778474.9A CN104502212B (en) | 2014-12-15 | 2014-12-15 | The loading device of concrete sample corrosion test under stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778474.9A CN104502212B (en) | 2014-12-15 | 2014-12-15 | The loading device of concrete sample corrosion test under stress |
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| CN104502212A CN104502212A (en) | 2015-04-08 |
| CN104502212B true CN104502212B (en) | 2017-06-20 |
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| CN201410778474.9A Expired - Fee Related CN104502212B (en) | 2014-12-15 | 2014-12-15 | The loading device of concrete sample corrosion test under stress |
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| CN106840872A (en) * | 2016-12-18 | 2017-06-13 | 内蒙古航天红岗机械有限公司 | A kind of making frock of adhesive tensile shear strength sample |
| CN110361318B (en) * | 2019-06-04 | 2020-09-01 | 浙江大学 | Steel bridge deck corrosion fatigue coupling test method and device thereof |
| CN110470542B (en) * | 2019-09-12 | 2024-03-08 | 辽宁科技大学 | Durable loading device for load-holding reinforced concrete beam |
| CN112067484A (en) * | 2020-09-10 | 2020-12-11 | 合肥普和普耐磨材料技术有限公司 | Rapid testing device and testing method for wear resistance of plastic product |
| CN113804570A (en) * | 2021-11-16 | 2021-12-17 | 中建安装集团有限公司 | Cement-based material surface detection device and detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204286971U (en) * | 2014-12-15 | 2015-04-22 | 深圳大学 | The charger of a kind of concrete sample corrosion test under effect of stress |
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| US3685969A (en) * | 1970-05-11 | 1972-08-22 | Murdock Machine & Eng Co | Stress-corrosion tester |
| CN2298514Y (en) * | 1997-07-18 | 1998-11-25 | 西北建筑工程学院 | Lever-type bend tester |
| CN101251468B (en) * | 2008-03-26 | 2011-09-07 | 深圳大学 | Loading equipment for corrosion test of concrete sample with stress action |
| CN102749252A (en) * | 2011-04-20 | 2012-10-24 | 同济大学 | Novel flexural member sustained loading test device based on secondary level effect |
| CN102980841A (en) * | 2012-11-02 | 2013-03-20 | 长沙理工大学 | Large-tonnage double-lever loading system |
| CN203595632U (en) * | 2013-09-24 | 2014-05-14 | 珠江水利委员会珠江水利科学研究院 | Automatic constant-pressure concrete creep instrument |
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Inventor after: Zhou Yingwu Inventor after: Wu Lingyi Inventor after: Liu Yang Inventor after: Xing Feng Inventor after: Sui Lili Inventor after: Zhang Changping Inventor before: Zhou Yingwu Inventor before: Wu Lingyi Inventor before: Xing Feng Inventor before: Sui Lili Inventor before: Zhang Changping |
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