CN107014696A - Beams of concrete Indirect Loaded experimental rig - Google Patents
Beams of concrete Indirect Loaded experimental rig Download PDFInfo
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- CN107014696A CN107014696A CN201710361708.3A CN201710361708A CN107014696A CN 107014696 A CN107014696 A CN 107014696A CN 201710361708 A CN201710361708 A CN 201710361708A CN 107014696 A CN107014696 A CN 107014696A
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- 238000009826 distribution Methods 0.000 claims abstract description 68
- 238000012360 testing method Methods 0.000 claims abstract description 42
- 238000002474 experimental method Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 125
- 239000010959 steel Substances 0.000 claims description 125
- 238000000465 moulding Methods 0.000 claims description 3
- 238000011160 research Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003187 abdominal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
-
- 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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The invention discloses a kind of beams of concrete Indirect Loaded experimental rig.Including distribution beam, secondary distribution device, test beam, hydraulic jack, pressure sensor, base, I-shaped crossbeam, pillar.The two ends of I-shaped crossbeam set pillar respectively, and hydraulic jack is connected with I-shaped crossbeam bottom wing listrium；Pressure sensor is located between hydraulic jack and distribution beam；Test beam is set on test beam and chooses ear on the base, and secondary distribution device is placed on the choosing on ear of test beam, and distribution beam is placed on secondary distribution device.Load is produced by hydraulic jack, pressure sensor reads payload data, and secondary distribution device is passed to by distribution beam, then averagely apply pressure to the both sides of test beam and chosen on ear, complete Indirect Loaded experiment.Distribution beam of the present invention can be dismantled with secondary distribution device upper and lower part, assembled and replacing, and materials are easy, economical and practical, be adapted to Indirect Loaded and tested.
Description
Technical field
The present invention relates to field of civil engineering, especially a kind of beams of concrete Indirect Loaded experimental rig.
Background technology
In practical structures engineering, the load that the reinforced beam in many structural systems is born not is directly to apply
The top of beam is added in, and is consequently exerted in the range of the depth of section of the bottom of beam or beam.For example, prefabricated board and load thereon
Transmitted by the flange of precast beam belly；Secondary beam in cast-in-site slab-beam floors system and load thereon, mainly by joint face not
Cracking part（The nip in i.e. secondary beam support section）It is transferred to girder；In prefabricated concrete structure connecting node construction, put
Put at formula primary and secondary beam connecting node, be to be shelved on that girder is chosen on ear or the steel corbel of girder is first-class by prefabricated secondary beam.
Routine test is, directly in the top-loaded of beam, to study the stress performance of beam.But, with the development of architectural engineering
With the demand of social progress, prefabricated concrete structure again goes into the visual field of people due to the superiority of itself, in future
Development in, associated Indirect Loaded experiment will become more to popularize.At this time, it may be necessary to which a set of simple structure, economy has
The indirect charging device of effect.
The content of the invention
It is an object of the invention to provide a kind of beams of concrete Indirect Loaded experimental rig.
What the present invention was realized in：Beams of concrete Indirect Loaded experimental rig includes：I-shaped crossbeam, pillar, hydraulic pressure
Jack, pressure sensor, distribution beam, secondary distribution device, with test beam test specimen, the base for choosing ear.
The two ends of I-shaped crossbeam are respectively equipped with pillar, hydraulic jack top/bottom part and I-shaped crossbeam lower end edge of a wing plate surface
Center is fixedly connected；Pressure sensor be arranged on hydraulic jack top center and distribution beam end face center position it
Between；Test beam is arranged in the rectangular base that the concrete being connected with ground is made, and according to experiment institute research contents, adjusts base
The distance between.
Test beam is Indirect Loaded of the simulation secondary beam to girder, is set on girder and chooses ear.The making of this test beam is combined
Shelf type primary and secondary beam connecting node full-page proof in 15G310-1.
Selected secondary distribution device, secondary distribution device is made up of top I-steel and bottom I-steel, according to test beam
The selected bottom I-steel of height：In order to not make secondary distribution device touch girder surface, bottom I-steel is highly plus the height for choosing ear
Degree need to be more than deck-molding, meanwhile, the distance between bottom I-steel should be slightly bigger than width of main beam.In order to ensure bottom I-steel web
Not because of bend by pressure, while considering financial cost, ribbed panel is welded in I-steel web middle；According between the I-steel of bottom
Distance and bottom I-steel flange width select top I-steel, make top I-steel length be equal to bottom I-steel between
Distance plus two blocks of bottom I-steel flange width.Two pieces of bottom works of the orthogonal connection in two ends of top I-steel length direction
Word steel, is bolted the bottom wing listrium of top I-steel and the top flange plate of bottom I-steel, constitutes a biography for falling U-shaped
Force system, can ensure that the stability and security of whole loading system, while being easy to group again, tearing recycling open.This load transfer device
Referred to as secondary distribution device.The selection of the I-steel also needs to check by steel construction intensity and resistance to overturning.
Secondary distribution device is placed on test beam.Bottom I-steel is chosen on ear positioned at test beam both sides respectively.Adjustment
The position of good secondary distribution device, makes secondary distribution device not contacted with girder surface, while bottom I-steel is again relative to master
Beam is symmetrical.Ensureing that the load transfer of distribution beam institute is carried can evenly distribute to choosing on ear.
Calculated according to the bearing capacity of test beam and make distribution beam, distribution beam is placed on secondary distribution device, loaded
Point is respectively aligned at test beam girder and the distribution beam centre of form, it is ensured that 2 centres of form are located at load(ing) point to the plumb line on ground.
In experiment, load is produced by hydraulic jack, pressure sensor reads payload data, two are passed to by distribution beam
Sub-distribution device, then averagely apply pressure to by secondary distribution device the both sides of test beam and choose on ear, so as to complete the examination of Indirect Loaded
Test.
It is flexibly, slim and graceful compact present invention uses secondary distribution beam loading device, occupy little space, it is simple and feasible, removable
Interchangeable, adjustable loading position, also can be recycled, and repeatedly also can easily be repaired by changing part after consumption.The device material
Material obtains simple, and cheap, convenient and practical, manufacture difficulty is low.
Brief description of the drawings
Fig. 1 is device schematic three dimensional views of the invention.
Fig. 2 is the positive elevational schematic view of the device of the present invention.
Fig. 3 for the present invention in secondary distribution device schematic three dimensional views.
Marked in figure：1- distribution beams；The first tops of 2- I-steel；The second tops of 3- I-steel, the first bottoms of 4- I-steel；
The second bottoms of 5- I-steel, 6- girders；7- first chooses ear；8- second chooses ear；9- hydraulic jacks；10- pressure sensors；11-
First base；12- second bases；The I-shaped crossbeams of 13-；The pillars of 14- first；15 second pillars.
Embodiment
Embodiment：
With reference to accompanying drawing, the present invention is further described.
The present embodiment is tested using single span simply supported beam as object using indirect charging device, and load is by hydraulic jack
Produce, pass sequentially through distribution beam and secondary distribution device the load of application is reached into test beam and choose on ear.It is specific as follows：
Beams of concrete Indirect Loaded experimental rig includes：Distribution beam 1, secondary distribution device, test beam, hydraulic jack 9, pressure
Sensor 10, first base 11, second base 12, I-shaped crossbeam 13, pillar 14,15.Wherein, two secondary distribution devices point
Not be made up of the first top I-steel 2 and the first bottom I-steel 4, the second top I-steel 3 and the second bottom I-steel 5；Examination
Test beam ear 7 and second is chosen by girder 6, first and choose ear 8 and constitute.
The two ends of I-shaped crossbeam 13 are respectively equipped with the first pillar 14 and the second pillar 15.The bottom of hydraulic jack 9 and work
The lower end flange plate centre of surface position of font crossbeam 13 is fixedly connected.Pressure sensor 10 is arranged in the top of hydraulic jack 9
Between heart position and the end face center position of distribution beam 1.Test beam is arranged at the rectangle first that the concrete being connected with ground is made
On base 11 and second base 12, according to experiment institute research contents, the distance between first base 11 and second base 12 are adjusted.
The test beam of experimental rig is simulation secondary beam to the Indirect Loaded of girder, sets first to choose ear 7 and the on girder 6
Two choose ear 8.Shelf type primary and secondary beam connecting node full-page proof in the making combination 15G310-1 of this test beam.
Selected secondary distribution device, the first bottom I-steel 4 and the second bottom I-steel 5 are selected according to experiment deck-molding：For
Secondary distribution device is not set to touch the surface of test beam girder 6, the height of the first bottom I-steel 4 is plus the first height for choosing ear 7
Degree and the height of the second bottom I-steel 5 and the height of the second bottom I-steel 5 are added and the second height for choosing ear 8 is all higher than girder
6 is high, meanwhile, the distance between I-steel of the distance between I-steel of the first bottom I-steel 4 and the second bottom I-steel 5
Should be equal, and slightly larger than the width of girder 6.In order to ensure the first bottom I-steel 4 and the web of the second bottom I-steel 5 not because being pressurized
Bending, while financial cost is considered, in the first bottom I-steel 4 and the web middle of the second bottom I-steel 5 welding ribbed panel；
According to the spacing of the I-steel of the first bottom I-steel 4 and the width on the I-steel edge of a wing of the first bottom I-steel 4, and under second
The distance between I-steel of portion's I-steel 5 and the flange width of the second bottom I-steel 5 select the He of the first top I-steel 2 respectively
Second top I-steel 3, makes the length of the first top I-steel 2 and the second top I-steel 3 be respectively equal to the first bottom I-shaped
The spacing of the I-steel of steel 4 adds the width on the edge of a wing, and the distance between the I-steel of the second bottom I-steel 5 is wide plus the edge of a wing
Degree.Two ends difference the first bottom I-steel 4 of orthogonal connection of first top I-steel 2 and the length direction of the second top I-steel 3
With the second bottom I-steel 5, be bolted the first top I-steel 2 bottom wing listrium and the first bottom I-steel 4 it is upper
Flange plate, and the second top I-steel 3 bottom wing listrium and the top flange plate of the second bottom I-steel 5, constitute one group and fall U-shaped
Actuating system, can ensure that the stability and security of whole loading system, while being easy to group again, tearing recycling open.This power transmission is filled
Put referred to as secondary distribution device.The selection of the I-steel also needs to check by steel construction resistance to overturning.
Secondary distribution device is placed on test beam.First bottom I-steel 4 and the second bottom I-steel 5 are located at the respectively
One, which chooses ear 7 and second, chooses on ear 8.Adjust the position of secondary distribution device, make secondary distribution device not with the table of test beam girder 6
Face is contacted, while the bottom I-steel of the first bottom I-steel 4 is relative respectively with the bottom I-steel of the second bottom I-steel 5
It is symmetrical in test beam girder 6.This ensure that the load that distribution beam 1 is transmitted can evenly distribute and choose ear 7 and second to first and choose
On ear 8.
Calculated according to the bearing capacity of test beam and make distribution beam 1, distribution beam 1 is placed on secondary distribution device, protected
Card load(ing) point is respectively aligned at test beam girder 6 and the top surface centre of form of distribution beam 1, it is ensured that 2 centres of form are in load(ing) point in the lead on ground
On vertical line.
In experiment, load is produced by hydraulic jack 9, pressure sensor 10 reads payload data, transmitted by distribution beam 1
To secondary distribution device, then averagely apply pressure to by secondary distribution device the both sides first of test beam and choose ear 7 and second and choose on ear 8,
So as to complete the experiment of Indirect Loaded.
In this embodiment, the steel used is Q235B steel, and distribution beam 1 is chosen according to actual calculate, high 180mm,
Wide 120mm；Secondary distribution device also passes through actual calculating, employs No. 16 I-steel, i.e., high 160mm, the wide 88mm in the edge of a wing, abdomen
Thickness of slab 6mm.To ensure the intensity of I-steel, in the first bottom I-steel 4 and the welding of the web of the second bottom I-steel 5 and abdominal depth phase
With the rib of size.
The original device of non-ribbed panel is used for load test of the load for 670kN or so in actual tests, works well,
Do not loaded further for the consideration to experiment safety, the present invention considers that floor is strengthened, and can bear on the original basis
Higher load.
In above-mentioned Indirect Loaded experimental rig, distribution beam 1 is detachable with secondary distribution device upper and lower part, it is assembled with more
Change, and materials are easy, it is economical and practical, it is adapted to Indirect Loaded experiment.
These are only the embodiment of practical application of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (1)
1. a kind of beams of concrete Indirect Loaded experimental rig, it is characterised in that beams of concrete Indirect Loaded experimental rig includes：Point
With beam（1）, secondary distribution device, test beam, hydraulic jack（9）, pressure sensor（10）, first base（11）, the second bottom
Seat（12）, I-shaped crossbeam（13）, the first pillar（14）, the second pillar（15）；Wherein, two secondary distribution devices are respectively by
One top I-steel（2）, the second top I-steel（3）, the first bottom I-steel（4）With the second bottom I-steel（5）Composition；Examination
Beam is tested by girder（6）, first choose ear（7）Ear is chosen with second（8）Composition；
I-shaped crossbeam（13）Two ends be respectively equipped with the first pillar（14）With the second pillar（15）；Hydraulic jack（9）Bottom
With I-shaped crossbeam（13）Lower end flange plate centre of surface position is fixedly connected；Pressure sensor（10）It is arranged on hydraulic jack
（9）Top center and distribution beam（1）Between end face center position；Test beam is arranged at the concrete being connected with ground and is made
Rectangle first base（11）And second base（12）On, according to experiment institute research contents, adjust first base（11）With second
Base（12）The distance between；
The test beam of experimental rig is Indirect Loaded of the simulation secondary beam to girder, in girder（6）It is upper to set first to choose ear（7）With
Two choose ear（8）；Shelf type primary and secondary beam connecting node full-page proof in the making combination 15G310-1 of this test beam；
Selected secondary distribution device, the first bottom I-steel is selected according to experiment deck-molding（4）With the second bottom I-steel（5）：For
The secondary distribution device is not set to touch test beam girder（6）Surface, the first bottom I-steel（4）Height choose ear plus first
（7）Height and the second bottom I-steel（5）Height choose ear plus second（8）Height be all higher than girder（6）Height, meanwhile,
First bottom I-steel（4）The distance between I-steel and the second bottom I-steel（5）The distance between I-steel answer phase
Deng, and slightly larger than girder（6）Width；In order to ensure the first bottom I-steel（4）With the second bottom I-steel（5）Web not because by
Song is bent, in the first bottom I-steel（4）With the second bottom I-steel（5）Weld ribbed panel in web middle；According under first
Portion's I-steel（4）I-steel spacing and the first bottom I-steel（4）The width on the I-steel edge of a wing, and the second bottom I-shaped
Steel（5）The distance between I-steel and the second bottom I-steel（5）Flange width selectes the first top I-steel respectively（2）With
Second top I-steel（3）, make the first top I-steel（2）With the second top I-steel（3）Length be respectively equal under first
Portion's I-steel（4）The spacing of I-steel adds the width on the edge of a wing, and the second bottom I-steel（5）The spacing of I-steel adds the wing
The width of edge；First top I-steel（2）With the second top I-steel（3）Under the orthogonal connection first of two ends difference of length direction
Portion's I-steel（4）With the second bottom I-steel（5）, it is bolted the first top I-steel（2）Bottom wing listrium and first
Bottom I-steel（4）Top flange plate, and the second top I-steel（3）Bottom wing listrium and the second bottom I-steel（5）It is upper
Flange plate, constitutes one group of actuating system for falling U-shaped；
Secondary distribution device is placed on test beam；First bottom I-steel（4）With the second bottom I-steel（5）It is located at the respectively
One chooses ear（7）Ear is chosen with second（8）On；Adjust the position of secondary distribution device, make secondary distribution device not with test beam master
Beam（6）Surface is contacted, while the first bottom I-steel（4）Bottom I-steel and the second bottom I-steel（5）Bottom work
Word steel is respectively relative to test beam girder（6）Symmetrically；This ensure that distribution beam（1）The load transmitted can be evenly distributed to
One chooses ear（7）Ear is chosen with second（8）On；
Calculated according to the bearing capacity of test beam and make distribution beam（1）, by distribution beam（1）It is placed on secondary distribution device, protects
Card load(ing) point is respectively aligned to test beam girder（6）And distribution beam（1）At the top surface centre of form, it is ensured that 2 centres of form are in load(ing) point in ground
Plumb line on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361708.3A CN107014696A (en) | 2017-05-22 | 2017-05-22 | Beams of concrete Indirect Loaded experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361708.3A CN107014696A (en) | 2017-05-22 | 2017-05-22 | Beams of concrete Indirect Loaded experimental rig |
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ID=59450378
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314936A (en) * | 2017-08-23 | 2017-11-03 | 长沙理工大学 | A kind of environment fatigue load coupled simulation device that can freely regulate and control |
| CN108399849A (en) * | 2018-04-24 | 2018-08-14 | 天津城建大学 | Self-balance loading system suitable for armored concrete beam test practical teaching |
| CN110470461A (en) * | 2019-08-22 | 2019-11-19 | 哈尔滨哈玻拓普复合材料有限公司 | Distribution beam loading system and installation method for metal frames radome test |
| CN112461565A (en) * | 2020-11-17 | 2021-03-09 | 西安建筑科技大学 | Continuous beam bridge prestress overrun loss testing device and method based on balanced load shedding |
| CN112730080A (en) * | 2020-12-24 | 2021-04-30 | 大连理工大学 | Uniform distribution loading device for steel structure test |
| CN113466055A (en) * | 2021-07-21 | 2021-10-01 | 中铁二十四局集团有限公司 | Loading device for thermal induction concrete peeling test and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108399849A (en) * | 2018-04-24 | 2018-08-14 | 天津城建大学 | Self-balance loading system suitable for armored concrete beam test practical teaching |
| CN110470461A (en) * | 2019-08-22 | 2019-11-19 | 哈尔滨哈玻拓普复合材料有限公司 | Distribution beam loading system and installation method for metal frames radome test |
| CN110470461B (en) * | 2019-08-22 | 2021-02-26 | 哈尔滨哈玻拓普复合材料有限公司 | Distribution beam loading system for metal truss antenna housing test and installation method |
| CN112461565A (en) * | 2020-11-17 | 2021-03-09 | 西安建筑科技大学 | Continuous beam bridge prestress overrun loss testing device and method based on balanced load shedding |
| CN112730080A (en) * | 2020-12-24 | 2021-04-30 | 大连理工大学 | Uniform distribution loading device for steel structure test |
| CN113466055A (en) * | 2021-07-21 | 2021-10-01 | 中铁二十四局集团有限公司 | Loading device for thermal induction concrete peeling test and using method thereof |
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