CN106841577A - It is adaptable to concrete loading device and method under load environment coupling - Google Patents
It is adaptable to concrete loading device and method under load environment coupling Download PDFInfo
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- CN106841577A CN106841577A CN201710236741.3A CN201710236741A CN106841577A CN 106841577 A CN106841577 A CN 106841577A CN 201710236741 A CN201710236741 A CN 201710236741A CN 106841577 A CN106841577 A CN 106841577A
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- 239000004567 concrete Substances 0.000 title claims abstract description 65
- 238000011068 loading method Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008878 coupling Effects 0.000 title abstract description 4
- 238000010168 coupling process Methods 0.000 title abstract description 4
- 238000005859 coupling reaction Methods 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000009471 action Effects 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000004088 simulation Methods 0.000 claims description 8
- 238000013001 point bending Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000370738 Chlorion 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses being adaptable to concrete loading device and method under load environment coupling, it solves the problems, such as that apparatus structure is complicated in the prior art, can not be adapted to environment and provides equipment, have the advantages that simple to operate, experiment is workable, its scheme is as follows：Concrete loading device includes transmitting concrete test part the pressing plate of pressure；For applying stressed compressing member to pressing plate, compressing member is connected with leverage, and fulcrum and the sleeve arrangement of leverage are fixed；Located at the balance weight mechanism of pressing plate one or both sides, balance weight mechanism is connected with leverage and applies active force with to leverage, calculates compressing member to pressing plate pressure applied by leverage and then obtains the load that concrete test part bears.
Description
Technical field
The present invention relates to concrete test, concrete loading under load-environment coupled action is more particularly to adaptable to
Device and method.
Background technology
In Practical Project, the destruction major part of concrete is because load is various with carbonization, infiltration, freeze thawing, corrosion etc.
Caused by environment collective effect, if only research is not loaded with the durability of concrete sample and will be unable to rationally reflect concrete institute
The true environment at place.Therefore, the loading device and test method of concrete under a load-environment coupled action are set up, for
It is very meaningful for the durability of research concrete.
The country has been related to compression and the lower concrete durability experiment loading device class of various factors coupling effect at present
As design, its be mainly loaded by jack, spanner twists the load mode such as nut, there is following lacking in these experimental rigs
Fall into：Jack loading device needs reaction frame, and structure and mounting process are complex, operation inconvenience, and cannot put carbon into
In change case or other durability equipment；It is uniform that the stubborn nut loading device of spanner cannot ensure that multiple nuts are further applied load
Property, and need just to can determine that the size of load with sensor and tester, entirely increased the complexity of measurement device.
Accordingly, it would be desirable to be adaptable to coagulation under load-environment coupled action to what can be put into durability test equipment
Native loading device and method, are researched and analysed.
The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides being adaptable to concrete under load-environment coupled action
Loading device, the device total sets simple, easy to operate, can put into the durability survey that can provide various ambient conditions
In examination equipment.
The concrete scheme for being adaptable to concrete loading device under load-environment coupled action is as follows：
Concrete loading device under load-environment coupled action is adaptable to, including：
The pressing plate of pressure is transmitted to concrete test part；
For applying stressed compressing member to pressing plate, compressing member is connected with one end of leverage, the fulcrum of leverage
Sleeve mechanism with adjustable leverage height is fixed；
Located at the balance weight mechanism of pressing plate one or both sides, balance weight mechanism is connected with to Lever machine with the other end of leverage
Structure apply active force, by leverage calculate compressing member to pressing plate pressure applied so that obtain concrete test part hold
The load received.
Above-mentioned concrete loading device, without setting reaction frame, can realize applying concrete test part by balance weight mechanism
Continuous load is accommodated, by the setting of leverage, when lever state is subject to load, to keep lever state horizontal
State, is adjusted to compressing member, and the active force applied to pressing plate by compressing member can obtain the load that concrete test part bears, and lead to
The different load of balance weight mechanism offer is crossed, the load that concrete test part bears is naturally different, and said apparatus are integrally tied
Structure is simple, integrally can be positioned in testing equipment, it is achieved thereby that durability examination of the concrete in different loads, varying environment
Test.
The balance weight mechanism includes pulley mechanism, and counterweight is set on pulley mechanism, and counterweight is by drawstring across pulley mechanism
And be connected with one end of the leverage, the quality of counterweight can increase or can reduce, and by counterweight, just realize to Lever machine
The adjustment of structure one end amount of force.
The bottom of the balance weight mechanism is on base plate, and movable base plate then realizes the movement of whole device, simple and convenient,
Support member is set on base plate, and support member is through described pressing plate with the horizontal level of fixation clip.
The sleeve mechanism includes stud, and sleeve mechanism includes stud, and two studs located at leverage both sides cover
There is sleeve, sleeve is connected by connector, connector passes through leverage to form the fulcrum of leverage, and pressing plate passes through stud
Set to realize the fixation to the horizontal level of pressing plate, stud is provided with multiple, is configured symmetry through pressing plate, to ensure stress
It is balanced.
The leverage includes depression bar, and depression bar interlude position sets and set in level meter, level meter calibration bubble, sees
See whether bubble is placed in the middle, it is simple and convenient to ensure the horizontality of depression bar.
In a Hanging Basket, Hanging Basket is connected the counterweight with described drawstring, and Hanging Basket top sets opening, Hanging Basket and drawstring
It is fixed, and multiple counterweight can be set in Hanging Basket.
Sleeve is cased with the stud, sleeve is connected to form described branch by connecting rod with described leverage
Point, the fulcrum can rotate in the range of set angle, and specifically, depression bar is provided with a perforate, and the middle part size of connecting rod is less than end
Portion's size, the middle part of connecting rod is set through perforate, and end and the sleeve of connecting rod are fixed, in order to ensure the stabilization of fulcrum, spiral shell
Post is provided with the row of two row four, and such connecting rod is respectively fixed through both sides after perforate with a stud.
The bottom of the sleeve is cased with spring on the stud, and nut is set between spring and sleeve, and nut is to bullet
Spring is compressed, and is easy to the adjustment to depression bar height between pressing plate.
The compressing member is provided with even number, and compressing member further, is adjusted for convenience located at the middle part of the pressing plate,
The both sides of pressing plate respectively set a balance weight mechanism, and compressing member respectively sets one and one section of fixation of depression bar, and compressing member is bolt, depression bar end
Portion is sheathed on bolt.
For the problem for overcoming capacity usage ratio in the prior art low, present invention also offers one kind can be suitably used for load with
Concrete test loading method under various environment coupled actions, is capable of achieving to provide various operating environments to concrete test part,
It is simple to operate without sensor and tester.
One kind can be suitably used for load and concrete test loading method under various environment coupled actions, be fitted using described
Should be in concrete loading device under load-environment coupled action, by the loading device in environment offer equipment, equipment such as carbon
Change case, freezing-thawing test machine to realize the simulation of operating environment.
The above method, comprises the following steps that：
1) testpieces and loading steel are positioned between base plate and pressing plate, load mode is four-point bending test, Duo Geshi
Test part and transmit pressure by loading steel, testpieces upper and lower surface is respectively provided with loading steel, the loading steel spacing for transmitting loading force is
100mm, the loading steel spacing for serving as bearing is 300mm；
2) after part to be tested is fixed with loading steel position, equipment is provided located at environment by loading device, manually by counterweight
Mechanism is further applied load to leverage；
3) be ensure leverage in depression bar horizontality, rotatably compress part and act power with to pressing plate；
4) when bubble is placed in the middle in leverage, the load that single compressing member applies can be calculated according to lever principle, is entered
And the load that pressing plate is born is calculated, and check durability of the concrete test part under load and environment coupled action.
In the method, different size of load is provided to leverage by balance weight mechanism, be in environment offer equipment
Concrete provides the simulation of operating environment, simulation of the concrete test part under environment-load coupling is realized, to coagulation
The durable Journal of Sex Research of soil has great importance.
Compared with prior art, the beneficial effects of the invention are as follows：
1) this loading device simple structure, easily operated, all parts can be dismantled, and be not required to reaction frame can be to test specimen
Apply continuing load, and whole device movement is more convenient, for the simulation under varying environment is provided conveniently.
2) device that the present invention is provided is not limited by test specimen species and number, can both do the curved drawing of multiple beams of concretes
Experiment, it is also possible to do the compression test of concrete cube test specimen.
3) apparatus of the present invention can put carbonization, chlorion in the equipment simulating Practical Projects such as carbonization case, freezing-thawing test machine into
Various environment such as erosion, drying and watering cycle and Frozen-thawed cycled, durability of the research test specimen under load and environment coupled action.
4) experimental rig of the present invention can be changed without sensor and tester by adjusting the weight or number of counterweight
The size of load, is effectively saved social resources, while simplifying test methods and procedures.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.
Fig. 1 is concrete loading device use state cross-sectional view under load-environment coupled action of the present invention；
Fig. 2 is the cross-sectional view of concrete loading device under load-environment coupled action of the present invention；
Fig. 3 is the front elevation view of concrete loading device forcing press under load-environment coupled action of the present invention；
Fig. 4 is concrete loading device depression bar operating diagram under load-environment coupled action of the present invention；
Fig. 5 is the sleeve depression bar combination unit structure in concrete loading device under load-environment coupled action of the present invention
Figure；
Fig. 6 is the installation diagram of concrete loading device pulley under load-environment coupled action of the present invention.
Wherein：1. base plate, 2. pressing plate, 3. stud, 4. depression bar, 5. sleeve, 6. pulley, 7. bolt, 8. connecting rod, 9. gas
Steep, 10. drawstring, 11. Hanging Baskets, 12. nuts, 13. bows, 14. loading steel, 15 concrete test parts.
Specific embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, apparatus structure present in prior art is complicated, cannot provide various environment moulds
The deficiency of plan, in order to solve technical problem as above, present applicant proposes being adaptable to concrete under load-environment coupled action
Loading device and method.
In a kind of typical implementation method of the application, as shown in figure 1, being mixed under being adaptable to load-environment coupled action
Solidifying soil loading device, including base plate 1, pressing plate 2, threaded rod 3, depression bar 4, sleeve 5, pulley 6, bolt 7, drawstring 10, Hanging Basket 11, plus
Steel 14 is carried, concrete test part 15, concrete test part is located at the bottom of pressing plate 2, and concrete test part bottom is carried out by base plate 1
Support.
As depicted in figs. 1 and 2, base plate 1 is provided with ten bolts hole, and each one of two ends, centre respectively sets four along both sides,
Threaded rod or stud 3 are fixed by bolt hole with base plate 1, and pressing plate 2 sets eight bolts hole, its position and middle eight threaded rods
Correspond.Cover a spring, nut 12 of being screwed on above spring, by two groups of connected sets respectively on the stud 3 of inner side four
Cylinder depression bar combination unit is respectively disposed on corresponding four threaded rods.The threaded rod top at the two ends of base plate 1 respectively sets a cunning
Wheel 6, the tail end of depression bar 4 respectively ties up a drawstring 10, and drawstring bypasses pulley 6 and falls naturally, and a Hanging Basket 11 is disposed in drawstring tail end, hangs
Basket is used to hold counterweight, by changing the quality of counterweight, different size of load is provided with to depression bar 4, so as to realize to pressing plate 2
The regulation of load.
Fig. 3 is the operation principle schematic diagram of depression bar, is further applied load to pressing plate 2 by adding counterweight in Hanging Basket 11, plus
After entering counterweight, to make depression bar holding level, bolt 7 is twisted with spanner or other adjustment equipments, whether observation bubble 9 is placed in the middle, works as gas
Depression bar 4 is in horizontality when steeping placed in the middle, and the size that single bolt 7 is further applied load can be calculated according to lever principle.Two
Load added by bolt need to be consistent, and the two is added as the load that pressing plate 2 is born, can be by adjusting counterbalance mass or individual
Count to change the size of load.
As shown in figure 4, sleeve depression bar combination unit includes sleeve 5, depression bar 4, bolt 7, connecting rod 8 and bubble 9.Depression bar 4
Docked in the form of perforate with the connecting place of connecting rod 8, a perforate is set on depression bar 4, so that connecting rod 8 is hung down with depression bar 4
Directly, the middle part of connecting rod 8 is arranged to thin bar, can unhinderedly pass through this perforate, and depression bar 4 can be realized flat vertically around the hole
Rotation in face, the perforate is the 1/5 of the length of depression bar 4 apart from the distance of bolt 7, is easy to quickly calculate lotus of the bolt 7 to pressing plate 2
Carry size.
Fig. 5 is the installation diagram of concrete loading device pulley under load-environment coupled action of the present invention, in this stud 3
Two bows 13 are welded on top, and an iron is fixed on the upper end of two bow 13, pulley is placed in into two bows through pulley
Centre, is configured by the pulley to drawstring.
By above-mentioned loading device in the environment offer equipment, be such as carbonized case, freezing-thawing test machine of equipment is various to realize
Operating environment such as carbonization, infiltration, freeze thawing, the simulation of corrosion.
The present invention provide another embodiment be：One kind can be suitably used for load and be tried with concrete under various environment coupled actions
Loading method is tested, is comprised the following steps that：
1) test specimen and loading steel are positioned between base plate and pressing plate, load mode is four-point bending test, multiple test specimens
Pressure is transmitted by loading steel, test specimen upper and lower surface is respectively provided with loading steel, the loading steel spacing for transmitting loading force is 100mm, is filled
When the loading steel spacing of bearing is 300mm；
2) after test specimen is fixed with loading steel position, equipment is provided located at environment by loading device, manually by counter weight machine
Structure is further applied load to leverage；
3) be ensure leverage in depression bar 4 horizontality, rotatably compress part and act power with to pressing plate 2；
4) when bubble is placed in the middle in leverage, the load that single compressing member applies can be calculated according to lever principle, is entered
And the load that pressing plate is born is calculated, and check durability of the concrete test part under load and environment coupled action.
In the method, different size of load is provided to leverage by balance weight mechanism, be in environment offer equipment
Concrete provides the simulation of operating environment, simulation of the concrete test part under environment-load coupling is realized, to coagulation
The durable Journal of Sex Research of soil has great importance.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. concrete loading device under load-environment coupled action is adaptable to, it is characterised in that including：
Pressing plate for transmitting pressure to concrete test part；
For applying stressed compressing member to pressing plate, compressing member is connected with one end of leverage, the fulcrum of leverage with can
The sleeve mechanism for adjusting leverage height is fixed；
Located at the balance weight mechanism of pressing plate one or both sides, balance weight mechanism is connected with the other end of leverage and is applied with to leverage
Plus active force, compressing member is calculated to pressing plate pressure applied by leverage and then obtains what concrete test part bore
Load.
2. according to claim 1 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
Include pulley mechanism in, the balance weight mechanism, counterweight be set on pulley mechanism, counterweight by drawstring across pulley mechanism and with institute
State one end connection of leverage.
3. according to claim 1 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
In the sleeve mechanism includes stud, and two studs located at leverage both sides are cased with sleeve, and sleeve is connected by connector
Connect, connector passes through leverage to form the fulcrum of leverage, and pressing plate is set through stud, and concrete test part is located at pressure
Plate bottom.
4. according to claim 1 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
Include depression bar in, the leverage, depression bar interlude position level meter is set with confirm depression bar whether level.
5. according to claim 2 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
In in a Hanging Basket, Hanging Basket is connected the counterweight with described drawstring.
6. according to claim 3 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
In, sleeve is cased with the stud, sleeve is connected to form described fulcrum, the branch by connecting rod with described leverage
Point can rotate in the range of set angle.
7. according to claim 1 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
In the bottom of the balance weight mechanism sets support member on base plate on base plate, support member passes through described pressing plate to determine pressure
The horizontal level of plate.
8. according to claim 6 to be adaptable to concrete loading device under load-environment coupled action, its feature exists
In the bottom of the sleeve is cased with spring on the stud, and nut is set between spring and sleeve.
9. one kind can be suitably used for load with concrete test loading method under various environment coupled actions, it is characterised in that use
Concrete loading device under load-environment coupled action is adaptable to as any one of claim 1-8, this is loaded
Device is located in environment offer equipment to realize the simulation of operating environment.
10. one kind as claimed in claim 9 can be suitably used for load with concrete test loading side under various environment coupled actions
Method, it is characterised in that comprise the following steps that：
1) testpieces and loading steel are positioned between base plate and pressing plate, load mode is four-point bending test, multiple testpieces
Pressure is transmitted by loading steel, testpieces upper and lower surface is respectively provided with loading steel；
2) after part to be tested is fixed with loading steel position, equipment is provided located at environment by loading device, manually by balance weight mechanism
Leverage is further applied load；
3) be ensure leverage in depression bar horizontality, rotatably compress part and act power with to pressing plate；
4) when bubble is placed in the middle in leverage, the load that single compressing member applies, Jin Erji can be calculated according to lever principle
The load that pressing plate is born is calculated, and checks durability of the concrete test part under load and environment coupled action.
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|---|---|---|---|
| CN201710236741.3A CN106841577B (en) | 2017-04-12 | 2017-04-12 | Concrete loading device and method applicable to load-environment coupling effect |
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| CN201710236741.3A CN106841577B (en) | 2017-04-12 | 2017-04-12 | Concrete loading device and method applicable to load-environment coupling effect |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109507016A (en) * | 2018-12-26 | 2019-03-22 | 西安建筑科技大学 | A kind of multifactor Under Concrete durability test dynamic loading device and method |
| CN109540708A (en) * | 2018-10-30 | 2019-03-29 | 南昌大学 | A kind of test method of simulation concrete under load and environmental factor coupling |
| CN109724863A (en) * | 2018-12-11 | 2019-05-07 | 南京工程学院 | Apply the device and its test method of constant load for cement-based material test specimen |
| CN111678753A (en) * | 2020-07-03 | 2020-09-18 | 河海大学 | Underground cavern simulation experiment device and experiment method |
| CN113791199A (en) * | 2021-09-09 | 2021-12-14 | 郑州大学 | Concrete test device under simulation load and environmental factor coupling effect |
| CN114047080A (en) * | 2021-11-16 | 2022-02-15 | 内蒙古工业大学 | Concrete beam loading device under sulfate soaking and continuous load coupling effect |
| CN116335105A (en) * | 2023-05-11 | 2023-06-27 | 烟台市交通运输服务中心(烟台市城市轨道交通建设服务中心、烟台市铁路建设服务中心) | Highway subgrade fixed-point compression pressure measuring device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540708A (en) * | 2018-10-30 | 2019-03-29 | 南昌大学 | A kind of test method of simulation concrete under load and environmental factor coupling |
| CN109724863A (en) * | 2018-12-11 | 2019-05-07 | 南京工程学院 | Apply the device and its test method of constant load for cement-based material test specimen |
| CN109507016A (en) * | 2018-12-26 | 2019-03-22 | 西安建筑科技大学 | A kind of multifactor Under Concrete durability test dynamic loading device and method |
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| CN113791199A (en) * | 2021-09-09 | 2021-12-14 | 郑州大学 | Concrete test device under simulation load and environmental factor coupling effect |
| CN114047080A (en) * | 2021-11-16 | 2022-02-15 | 内蒙古工业大学 | Concrete beam loading device under sulfate soaking and continuous load coupling effect |
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| CN116335105A (en) * | 2023-05-11 | 2023-06-27 | 烟台市交通运输服务中心(烟台市城市轨道交通建设服务中心、烟台市铁路建设服务中心) | Highway subgrade fixed-point compression pressure measuring device |
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| Publication number | Publication date |
|---|---|
| CN106841577B (en) | 2024-01-30 |
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