CN107870126A - New concrete compression column and armored concrete are by camber beam creep test device - Google Patents
New concrete compression column and armored concrete are by camber beam creep test device Download PDFInfo
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- CN107870126A CN107870126A CN201710942625.3A CN201710942625A CN107870126A CN 107870126 A CN107870126 A CN 107870126A CN 201710942625 A CN201710942625 A CN 201710942625A CN 107870126 A CN107870126 A CN 107870126A
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- 239000004567 concrete Substances 0.000 title claims abstract description 147
- 238000012360 testing method Methods 0.000 title claims abstract description 78
- 230000006835 compression Effects 0.000 title claims abstract description 44
- 238000007906 compression Methods 0.000 title claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000015271 coagulation Effects 0.000 claims description 5
- 238000005345 coagulation Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000012669 compression test Methods 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention belongs to the concrete durability studying technological domain in field of civil engineering, specifically a kind of new concrete compression column and armored concrete are by camber beam creep test device.Solves the problems, such as individually to carry out concrete compression test block creep test and armored concrete under existing laboratory environment condition by space during camber beam creep test and loading efficiency, test block stand apparatus and frame-type armored concrete are crept by camber beam loading device including armored concrete loading beam, concrete compression, armored concrete loading beam is crept on the upside of test block stand apparatus by bearing roller bearing installed in some concrete compressions, and frame-type armored concrete is provided with the middle part of armored concrete loading beam by camber beam loading device.Each part manufacture difficulty of the present invention is small, and easy for construction, cost is relatively low and safe and reliable, and it is larger that loading device repeats value.
Description
Technical field
The invention belongs to the concrete durability studying technological domain in field of civil engineering, specifically one kind can be entered simultaneously
The creep test device of the test block of row concrete compression and armored concrete by camber beam.
Background technology
Concrete is as a kind of plasticity height, the preferable material of overall economic efficiency, in present building trade, particularly bridge
Relatively broad application has been obtained in girder construction.However, influenceed by concrete material shrinkage and creep, long span concrete bridge
Structure will produce larger deformation, and then significantly affect the performance of structure, particularly the operation security of high-speed railway bridge
Property.In bridge structure in addition to the concrete structures such as pier stud are based on being pressurized, girder construction is primarily subjected to bending stress, and difference should
Significant difference be present in the concrete creep performance under power state.Therefore, by creep test device reasonable in design, and then inquire into
The creep property of Cemented of different stresses, for the long term deformation behaviour of Accurate Prediction bridge structure, solve at present to big
The problem of span bridge's TERM DEFORMATION forecasting inaccuracy is true has great theory and practice meaning.
Scholars have carried out substantial amounts of creep test to Ordinary Compressive Concrete test block at present, and obtain on this basis
Many Concrete Creep Prediction Models, such as ACI209, CEB10, GL2000, B3 and B4 models.The it is proposed of above-mentioned model is defined
Really the TERM DEFORMATION of prediction bridge structure provides foundation.But model above is all based on concrete compression test block creep test knot
What fruit drew, the less concrete creep result of the test with reference to bending component.In recent years, more scholar has also progressively carried out coagulation
The Creep Characteristics testing research of soil or reinforced beam, and concrete compression test block is compared for armored concrete by camber beam Xu
Become the difference of performance.But conventional research is to being tested using two kinds of devices the creeping property of different primary structure members mostly
, such as lever, spring, spring lever formula or fluid pressure type loading device are used to concrete compression test block, reinforcing bar is mixed
Solidifying soil is used counter weight type or hydraulic jack formula loading device mostly by camber beam.Using different loading devices to concrete test block
, it is necessary to the more hydraulic jack of larger working space and number, the concrete of different stresses when carrying out creep test
Stress relation is difficult to control, and loading device is various, is spent larger.This will certainly cause larger man power and material to waste, and
The comparative study of concrete component Creep Characteristics in different stresses is also a greater impact.There has been no one kind at present to try
Experiment device can carry out concrete compression test block and armored concrete simultaneously and be crept test by camber beam.
The content of the invention
The purpose of invention is crept examination to solve under existing laboratory environment condition individually to carry out concrete compression test block
Test with armored concrete by space during camber beam creep test and loading efficiency problem, there is provided a kind of new concrete compression column and
Armored concrete is by camber beam creep test device.
The present invention takes following technical scheme：A kind of new concrete compression column and armored concrete are crept test by camber beam
Device, including armored concrete loading beam, concrete compression creep test block stand apparatus and frame-type armored concrete by camber beam
Loading device, armored concrete loading beam are crept in test block stand apparatus by bearing roller bearing installed in some concrete compressions
Side, armored concrete loading beam middle part are provided with frame-type armored concrete by camber beam loading device.
Further, concrete compression is crept, and test block stand apparatus includes compression concrete test block, vibrating string type strain senses
Device, spring fastening II, perforated steel plate, control bit top plate, control bit bottom plate, control threaded rod nut and spiral, control bit
Spiral is connected between top plate and control bit bottom plate, spiral upper end is fixed through spring fastening II with perforated steel plate,
Spiral lower end is provided with by controlling threaded rod nut to be fixed with control bit bottom plate, between top steel plate and lower steel plate and is pressurized
Concrete test block, vibrating string type strain transducer is installed on compression concrete test block.
Further, frame-type armored concrete by camber beam loading device include entablature, sill, spring fastening I, on
Crossbearer cover plate, jack, steel column and pressure sensor, the rectangular distribution of four steel columns are in turn fixed to rigid foundation
On, the top of steel column extends through entablature and sill, and entablature is arranged with two, between entablature and steel column in parallel
It is bolted, two entablatures are connected together by entablature cover plate with entablature cover plate bolt, upper horizontal stroke
Hole is provided among beam cover plate, jack is passed through in hole, jack is fixed on entablature cover plate, and sill is the steel of X-type
Beam, the centre of sill are provided with sill mesopore, and four fulcrums of the sill X-type are each passed through four steel columns, lower horizontal stroke
Beam and steel column are fixed by lower limit bolt, and spring fastening I and pressure sensor are installed in the bottom of jack respectively, described
It is placed on by the armored concrete loading beam of load action on the downside of pressure sensor.
Further, the span centre location arrangements displacement transducer of armored concrete loading beam.
Further, armored concrete loading beam spaning middle section arranges some strain transducers.
Further, during concrete compression creeps test block stand apparatus, one is provided with control bit top plate and is rolled with bearing
The corresponding groove II of shaft size size.
Further, control bit top plate is provided with the groove I for being used for blocking compression concrete test block with control bit bottom board symmetry.
The concrete compression test block section stress that the present invention specifically derives is with armored concrete by camber beam maximum compressive stress
Between relation it is as follows：
For span centre bears the simply supported beam of load, according to stress balance condition, the external force of each bearing is F/2, often
The external force of individual concrete test block is F/8,1=F/ of stress σ (8A) in respective cross-section；The moment of flexure of reinforced beam spaning middle section
For M=FL/4, maximum stress 2=FL/4W of σ on compression area edge, therefore stress and reinforcing bar on concrete test block section
The ratio between stress at beams of concrete maximal margin is the 2=W/ of σ (2AL) of σ 1/；
In formula：F is the concentrated force that reinforced beam spaning middle section is subject to；A is the area of section of concrete compression test block；σ 1 is
Stress on concrete compression test block section；σ 2 is Sectional Dimension of Reinforced Concrete Beam top edge maximum crushing stress；W is armored concrete
The net section of beam section away from；L is the calculating across footpath of reinforced beam；M is the moment of flexure of reinforced beam spaning middle section.
A kind of examination that can be carried out concrete compression test block simultaneously and be crept with armored concrete by camber beam provided by the present invention
Experiment device compared with prior art, has the advantages that：
1）The present invention can realize that Ordinary Compressive Concrete test block and armored concrete are tested by the Creep Characteristics of camber beam simultaneously, coagulation
The stress intensity relation of native compression test block and armored concrete between by camber beam can manual control, be easy to contrast different stresses
Under concrete structure Creep Characteristics；
2）Concrete compression test block is grouped together by the present invention, the compression bearing as reinforced beam, and Combination Design is protected
The stability of bearing loading procedure has been demonstrate,proved, and can guarantee that each test block by more uniform pressure.The device can be effectively
Test space is saved, achieves that two groups of concrete compressions are crept the creeping of test block and one group of reinforced beam with a device
Loading；
3）The reinforced beam that the present invention needs to load can be simply supported beam or continuous beam, it is only necessary to convert concrete compression and creep
Test block stand apparatus and frame-type armored concrete can be met that the reinforcing bar of different spans mixes by the position of camber beam loading device
Solidifying Tu Liang Creep Characteristics experiment demand；
4）Apparatus of the present invention are simple, and Xu to reinforced beam and concrete test block is only can be achieved with a hydraulic jack
Become loading, corresponding simple in construction, Path of Force Transfer is clear and definite, has higher promotional value.Each part manufacture of the device simultaneously is difficult
Spend small, easy for construction, cost is relatively low and safe and reliable, and it is larger that loading device repeats value.
Brief description of the drawings
Fig. 1 creeps for the concrete test block of specific embodiment loads the schematic diagram of bearing；
Fig. 2 is the schematic diagram of Fig. 1 section B-B；
Fig. 3 is that single span Reinforced Concrete Simple is loaded schematic diagram by camber beam；
Fig. 4 is loaded schematic diagram across RC Continuous for two by camber beam；
Fig. 5 is frame-type armored concrete by camber beam loading device structural representation；
Fig. 6 is Fig. 5 C-C schematic cross-sections；
Fig. 7 is Fig. 5 D-D schematic cross-sections；
The implication of symbol is as follows in figure：1- entablatures；2- sills；3- armored concrete loading beams；4- spring fastenings I；On 5-
Crossbearer cover plate；6- jack；7- steel columns；8- lower limit bolts；9- rigid foundations；10- upper bolts；11- compression coagulations
Native test block；12- pressure sensors；13- entablature cover plate bolts；14- jack bolts；15- vibrating string type strains pass
Sensor；16- displacement transducers；17- spring fastenings II；18- perforated steel plates；19- control bit top plates；20- control bit bottom plates；21-
Groove I；22- controls threaded rod nut；23- grooves II；24- spirals；25- sill mesopores；26- concrete compressions are crept
Test block stand apparatus；27- strain transducers；28- sills are lateral opening；29- bearing roller bearings；30- frame-type armored concrete is by curved
Beam loading device.
Embodiment
The technique effect of the design to the present invention, detail and acquisition is described further below in conjunction with the accompanying drawings.
As shown in Fig. 1-Fig. 4, concrete compression test block stand apparatus 26 of creeping includes compression concrete test block 11,
Vibrating string type strain transducer 15, spring fastening II17, perforated steel plate 18, control bit top plate 19, control bit bottom plate 20, groove I21,
Control threaded rod nut 22, groove II23, spiral 24.Before casting concrete, the vibrating string type strain transducer 15 is used
The flexible advance colligation of Steel bar rack into die trial, is ensureing the axis direction of the vibrating string type strain transducer 15 after shaping and compression
Concrete test block 11 is identical.The groove II23 is located at four corner locations of control bit top plate 19 and control bit bottom plate 20, institute
State that groove II23 size is more bigger than the diameter or the length of side of the compression concrete test block 11, and groove II23 depth is about
0.2 ~ 0.3cm, based on the main compression concrete test block 11 of card.The groove 121 is located at control bit top plate 19 and control bit bottom plate
20 center, the diameter of the groove I21 are slightly larger than perforated steel plate 18, and its depth disclosure satisfy that control threaded rod nut 22
Below the top surface of control bit top plate 19.The groove II23 and groove I21 slot in opposite direction.Have in the groove I21
Some through holes through roof and floor, spiral 24 can be run through.The compression concrete test block 11 is stuck in control bit top plate 19
In the groove II23 of control bit bottom plate 20, spiral 24 is run through in groove I21 through hole, and be placed into spring fastening
On II17, tightening control threaded rod nut 22, four groups are mixed by the position-limiting action of control bit top plate 19 and control bit bottom plate 20
Solidifying native test block binding turns into an entirety.Concrete compression test block stand apparatus 26 of creeping can be used as frame-type reinforced concrete
A native bearing by camber beam loading device 30, for undertaking the bearing load of beams of concrete.
Shown in Fig. 5-Fig. 7, the frame-type armored concrete is included entablature 1 by camber beam loading device 30, sill 2,
Armored concrete loading beam 3, spring fastening I4, entablature cover plate 5, hydraulic jack 6, steel column 7, lower limit bolt 8, just
Property ground 9, upper bolt 10, pressure sensor 12, entablature cover plate bolt 13, jack bolt 14, displacement pass
Sensor 16, sill mesopore 25, strain transducer 27.The rectangular distribution of four steel columns 7 is in turn fixed to rigid foundation 9
On, the top of steel column 7 extends through entablature 1 and sill 2, is consolidated between the entablature 1 and steel column 7 by bolt
It is fixed, provide counter-force for hydraulic jack.Two entablatures 1 pass through entablature cover plate 5 and entablature cover plate bolt 13
Connect together, hole is provided among the entablature cover plate 5, hydraulic jack 6, the hydraulic jack 6 are passed through in hole
It is fixed to jack bolt 14 on entablature cover plate 5.The oil circuit of the hydraulic jack 6 is connected with oil pump pipeline, is used
In the load for transmitting hydraulic jack application.The sill 2 is the girder steel of X-type, is provided with the centre of sill 2 in sill
Hole 25, the top of hydraulic jack 6 can be directly through no-load transmission.Four fulcrums of the sill 2X types are each passed through
Four steel columns 7, movement of the sill 2 on steel column 7 is limited with lower limit bolt 8.The top of the hydraulic jack 6
Spring fastening I4 and pressure sensor 12 are installed respectively.The armored concrete loading beam 3 by load action is just placed on pressure
The downside of force snesor 12.
Further, in the span centre location arrangements displacement transducer 16 of the armored concrete loading beam 3, for measure across
The vertical displacement of middle section.Some strain transducers 27 are arranged in spaning middle section, for measuring longitudinal fiber Xu of beams of concrete
Become strain.The p-wire of the strain transducer 27 is connected with strain testing case.
Further, the hydraulic jack 6 and loading armored concrete loading beam 3 between install a rigidity compared with
Big spring fastening I4, the bearing can bear larger load, but deform smaller；And need on the upside of the spring fastening I4
One pressure sensor 12 is installed, with the load size being delivered to measurement on crossbeam.
Further, in the concrete compression creeps test block stand apparatus 26, one is needed on control bit top plate 19
The individual groove corresponding with the size of steel column 29, for limiting the displacement of steel column 29, simulate the fixation of simply supported beam or continuous beam
Bearing.
Further, in order to ensure the progress of the preferred embodiment, it is ensured that the compression concrete test block 11 poured pushes up
The flatness of bottom surface.Concreting is completed and is placed under standard laboratory conditions after the completion of maintenance, it is necessary to be existed with sander
Top bottom surface carries out grinding process.
Further, the frame-type armored concrete should be had by the entablature 1 and sill 2 of camber beam loading device 30
Larger rigidity, the counter-force effect of larger beams of concrete can be resisted.Compared with beams of concrete, the deformation of the buckstay can neglect
Slightly disregard.
Fig. 3 and Fig. 4 respectively schematically gives the specific loading device being applied on concrete simply supported beam and continuous beam,
The present invention also can carry out loading of creeping to the reinforced beam of different spans and different loads.
The vibrating string type strain transducer 15 being embedded into compression concrete test block 11 is connected to by strain testing case
On computer, computer test system can Timing measurement its strain value.If beams of concrete arranged along depth of beam direction along bridge to
Dry strain transducer 27, the strain for measuring reinforced beam change with time relation.The cloth of institute's displacement sensors 16
Reinforced beam spaning middle section is put, for testing the vertical displacement on spaning middle section.
The present invention in a particular embodiment the step of it is as follows：
1）In template, triangular reinforced bar support is installed, three are in axial direction evenly arranged in the middle part of each concrete test block
Vibrating string type strain transducer, concrete test block size is according to the size and hydraulic jack of reinforced beam in the present embodiment
The capacity of water for pushing up bearing load determines, is conserved under the conditions of being placed into after casting concrete suitably, can be obtained after form removal
The concrete creep test block of experiment.
2）By every four groups of compositions, one bearing of concrete test block, control bit top plate 19 and control bit bottom plate 20 are stuck in
In neck, the reserving hole at middle part runs through spiral 24, and tightening control threaded rod nut 22, forms stand apparatus.This
The test specimen that every group of concrete test block of secondary loading can be made up of different ratio or admixture, also can be by the coagulation of different curing ages
Native test block composition.
3）Armored concrete with jack is placed into simply supported beam or continuous beam needs by camber beam Creep Loading Equipment
The position of loading, amesdial 16 and strain transducer 27 are installed in girder span middle section.Start hydraulic jack, reinforced beam
And certain deformation can be produced by larger vertical load, according to the reading of pressure sensor 12, when reaching design requirement
When, stop loading, and tightening control threaded rod nut 22, now the power of hydraulic jack 6 is transformed into sill 2 by can
On.
4）Before and after loading, vibrating string type strain transducer 15 is recorded, the reading on strain transducer 27 and amesdial 16, and with
Time change records the not displacement of same date and strain value successively.Stress result on observed pressure sensor 12, if numerical value is small
In the 5% of design load, start hydraulic jack, increase load, while continue tightening control threaded rod nut 22, keep applying
Load on to beams of concrete is constant.
The specific embodiment of the present invention, although being used as the main of reinforced beam stand apparatus using plain concrete test block
Component, but plain concrete is also not limited to, it is equally applicable for the concrete filled steel tube test block with same shape size.
Above-described is only the preferred embodiment of the present invention.For the person of ordinary skill of the art, exist
On the premise of not departing from the invention design, several modifications and improvements are made without creative work can, these all belong to
In protection scope of the present invention.
Claims (7)
1. a kind of new concrete compression column and armored concrete are by camber beam creep test device, it is characterised in that：Including reinforcing bar
Concrete loading beam（3）, concrete compression creeps test block stand apparatus（26）Loaded and filled by camber beam with frame-type armored concrete
Put（30）, armored concrete loading beam（3）Pass through bearing roller bearing（29）Installed in some concrete compressions creep test block bearing dress
Put（26）Upside, armored concrete loading beam（3）Middle part is provided with frame-type armored concrete by camber beam loading device（30）.
2. by camber beam creep test device, it is special for new concrete compression column according to claim 1 and armored concrete
Sign is：The concrete compression is crept test block stand apparatus（26）Including compression concrete test block（11）, vibrating string type strain pass
Sensor（15）, spring fastening II（17）, perforated steel plate（18）, control bit top plate（19）, control bit bottom plate（20）, control threaded rod
Nut（22）And spiral（24）, control bit top plate（19）With control bit bottom plate（20）Between be connected with spiral（24）,
Spiral（24）Upper end passes through spring fastening II（17）With perforated steel plate（18）It is fixed, spiral（24）Lower end passes through control
Threaded rod nut（22）With control bit bottom plate（20）It is fixed, top steel plate（23）With lower steel plate（24）Between be provided with compression coagulation
Native test block（11）, compression concrete test block（11）On vibrating string type strain transducer is installed（15）.
3. new concrete compression column according to claim 1 or 2 and armored concrete is by camber beam creep test device, its
It is characterised by：The frame-type armored concrete is by camber beam loading device（30）Including entablature（1）, sill（2）, spring branch
Seat I（4）, entablature cover plate（5）, jack（6）, steel column（7）And pressure sensor（12）, four steel columns（7）It is in
Distributed rectangular is in turn fixed to rigid foundation（9）On, steel column（7）Top extend through entablature（1）And sill（2）,
Entablature（1）It is arranged with two in parallel, entablature（1）With steel column（7）Between be bolted, two entablatures
（1）Pass through entablature cover plate（5）With entablature cover plate bolt（13）Connect together, entablature cover plate（5）Centre is provided with
Hole, jack is passed through in hole（6）, jack（6）It is fixed on entablature cover plate（5）On, sill（2）For the girder steel of X-type,
Sill（2）Centre be provided with sill mesopore（25）, the sill（2）Four fulcrums of X-type are each passed through four steel and stood
Post（7）, sill（2）And steel column（7）Pass through lower limit bolt（8）It is fixed, jack（6）Bottom spring is installed respectively
Bearing I（4）And pressure sensor（12）, the armored concrete loading beam by load action（3）It is placed on pressure sensor
（12）Downside.
4. by camber beam creep test device, it is special for new concrete compression column according to claim 3 and armored concrete
Sign is：The armored concrete loading beam（3）Span centre location arrangements displacement transducer（16）.
5. by camber beam creep test device, it is special for new concrete compression column according to claim 4 and armored concrete
Sign is：The armored concrete loading beam（3）Spaning middle section arranges some strain transducers（27）.
6. new concrete compression column and armored concrete according to claim 2 or 5 be by camber beam creep test device, its
It is characterised by：The concrete compression is crept test block stand apparatus（26）In, control bit top plate（19）On be provided with one with branch
Seat roller bearing（29）The corresponding groove II of size（23）.
7. by camber beam creep test device, it is special for new concrete compression column according to claim 6 and armored concrete
Sign is：Described control bit top plate（19）With control bit bottom plate（20）It is arranged with for blocking compression concrete test block（11）
Groove I（21）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942625.3A CN107870126B (en) | 2017-10-11 | 2017-10-11 | New concrete compression column and armored concrete are by camber beam creep test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942625.3A CN107870126B (en) | 2017-10-11 | 2017-10-11 | New concrete compression column and armored concrete are by camber beam creep test device |
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| CN107870126A true CN107870126A (en) | 2018-04-03 |
| CN107870126B CN107870126B (en) | 2019-11-12 |
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| CN201710942625.3A Expired - Fee Related CN107870126B (en) | 2017-10-11 | 2017-10-11 | New concrete compression column and armored concrete are by camber beam creep test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708959A (en) * | 2019-03-13 | 2019-05-03 | 宁波大学 | A kind of fixed device of four side spacer bar concrete slab blast wave load tests |
| CN111562073A (en) * | 2020-04-17 | 2020-08-21 | 太原理工大学 | Railway bridge creep test loading device under action of vehicle-induced cyclic load |
| CN113063662A (en) * | 2021-03-16 | 2021-07-02 | 沧州市建设工程质量服务中心 | Concrete filled steel tube creep testing device considering initial stress of steel tube |
| CN113092290A (en) * | 2021-03-26 | 2021-07-09 | 太原理工大学 | External prestress reinforced concrete beam fatigue test device and method |
| CN114527015A (en) * | 2022-02-14 | 2022-05-24 | 哈尔滨工业大学 | Pure torsion creep test device suitable for various sizes of combined components and test method thereof |
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| CN109708959A (en) * | 2019-03-13 | 2019-05-03 | 宁波大学 | A kind of fixed device of four side spacer bar concrete slab blast wave load tests |
| CN111562073A (en) * | 2020-04-17 | 2020-08-21 | 太原理工大学 | Railway bridge creep test loading device under action of vehicle-induced cyclic load |
| CN111562073B (en) * | 2020-04-17 | 2021-11-16 | 太原理工大学 | Railway bridge creep test loading device under action of vehicle-induced cyclic load |
| CN113063662A (en) * | 2021-03-16 | 2021-07-02 | 沧州市建设工程质量服务中心 | Concrete filled steel tube creep testing device considering initial stress of steel tube |
| CN113092290A (en) * | 2021-03-26 | 2021-07-09 | 太原理工大学 | External prestress reinforced concrete beam fatigue test device and method |
| CN114527015A (en) * | 2022-02-14 | 2022-05-24 | 哈尔滨工业大学 | Pure torsion creep test device suitable for various sizes of combined components and test method thereof |
| CN114527015B (en) * | 2022-02-14 | 2023-11-10 | 哈尔滨工业大学 | Pure torsion creep test device suitable for multiple-size combined components and test method thereof |
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