CN106840888A - A kind of Analysis of Concrete Tensile experimental rig and its method of testing - Google Patents
A kind of Analysis of Concrete Tensile experimental rig and its method of testing Download PDFInfo
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- CN106840888A CN106840888A CN201610976921.0A CN201610976921A CN106840888A CN 106840888 A CN106840888 A CN 106840888A CN 201610976921 A CN201610976921 A CN 201610976921A CN 106840888 A CN106840888 A CN 106840888A
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- 238000010998 test method Methods 0.000 title abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims description 30
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- 230000035772 mutation Effects 0.000 claims description 10
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- 239000011435 rock Substances 0.000 description 2
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- 238000009864 tensile test 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
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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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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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
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
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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
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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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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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a kind of Analysis of Concrete Tensile experimental rig and its method of testing, belong to railway construction equipment technical field.Analysis of Concrete Tensile experimental rig is used to carry out concrete sample extension test, including machine frame, force cell and the first charging assembly.Machine frame includes base, the first support member and the second support member, base has length direction and width, first support member and the second support member are arranged at intervals at base along the length direction of base, and force cell is arranged between the first support member and the second support member and near one end of the second support member；First charging assembly surrounds the receiving area for placing concrete sample with base, the first support member and the second support member, and the first charging assembly is used to apply dynamic loading to concrete sample.Its simple structure, easy to use, cost is relatively low.Analysis of Concrete Tensile method of testing can more conveniently test out the mechanical property of concrete sample.
Description
Technical field
The present invention relates to railway construction equipment technical field, in particular to a kind of Analysis of Concrete Tensile experimental rig and
Its method of testing.
Background technology
At this stage, railway construction high speed development, in order to ensure railway operation ride comfort, comfortableness and security, it is necessary to
Correlated performance to railway is tested, in order to grasp the Changing Pattern of railway work, so as to more reasonably be carried out to railway
Maintaining, so being badly in need of a kind of device of design now for the test to rail driven performance.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of Analysis of Concrete Tensile experimental rig, and its simple structure is easy to use,
Above mentioned problem can preferably be improved.
Another purpose of the embodiment of the present invention is to provide a kind of Analysis of Concrete Tensile method of testing, and the method can be more square
Just the mechanical property for testing out concrete sample.
What embodiments of the invention were realized in：
The embodiment provides a kind of Analysis of Concrete Tensile experimental rig, for carrying out stretching survey to concrete sample
Examination, including machine frame, force cell and the first charging assembly, machine frame include base, the first support member and the second support member,
Base has length direction and width, and the first support member and the second support member are arranged at intervals at bottom along the length direction of base
Seat, the first support member is provided with the first draw-in groove, and the second support member is provided with the second draw-in groove, and the first tensioning member is provided with the first draw-in groove, the
The side away from the second support member positioned at the first support member of one tensioning member is provided with locating part, and the second drawing is provided with the second draw-in groove
Stretch part, one end near the first support member of the second tensioning member is connected with one end of force cell, force cell away from
One end of second tensioning member is provided with the 3rd tensioning member；First charging assembly is surrounded with base, the first support member and the second support member
Receiving area for placing concrete sample, the first charging assembly is used to apply dynamic loading to concrete sample；First tensioning member
Be connected with one end of concrete sample near one end of the second support member, one end away from force cell of the 3rd tensioning member
It is connected with the other end of concrete sample.
Alternatively, Analysis of Concrete Tensile experimental rig also includes first laser displacement meter and second laser displacement meter, and first swashs
Light displacement meter is arranged between the first support member and the second support member and near one end of the first support member, second laser displacement meter
It is arranged between the first support member and the second support member and near one end of the second support member, concrete sample is located at first laser
Between displacement meter and second laser displacement meter.
Alternatively, the side away from first support member of the second support member is provided with the second charging assembly, the second loading
Component includes U-shaped part, annular element and jack, and annular element is connected with the second tensioning member, and U-shaped part passes through the annular element, U-shaped part
Two free ends be located at the both sides of annular element and be connected with the second support member respectively, the bottom of one end of jack and U-shaped part
Connection and be arranged at positioned at the outside of U-shaped part, i.e. jack U-shaped part bottom the side away from the second support member, jack
The other end be connected with annular element, the position that the position and annular element that annular element is connected with jack are connected with the second tensioning member point
Not Wei Yu annular element opposite side.
Alternatively, the 3rd support member is additionally provided between the first support member and the second support member, the 3rd support member is provided with the 3rd
Draw-in groove, force cell is located between the second support member and the 3rd support member, and second laser displacement meter is located at the 3rd support member
Away from the side of the second support member, the 3rd tensioning member passes through the 3rd draw-in groove.
Alternatively, the position positioned at the second draw-in groove of the second tensioning member be flat, the 3rd tensioning member positioned at the 3rd card
The position of groove is flat.
Alternatively, the both sides of the first support member, the second support member and the 3rd support member on the width of base are all provided with
There is the first reinforcer；The one or both sides of first support member, the second support member and the 3rd support member on the length direction of base
It is equipped with the second reinforcer；Base is rectangular slab, and the side away from first support member of rectangular slab is provided with the 3rd reinforcer.
Alternatively, both sides of first reinforcer on the length direction of base are provided with fixture.
Alternatively, the projection of the second draw-in groove and the 3rd draw-in groove on the first support member is Chong Die with the first draw-in groove.
Alternatively, the first draw-in groove, the second draw-in groove and the 3rd draw-in groove are U-shaped card slot.
A kind of method of testing carried out using Analysis of Concrete Tensile experimental rig described above, the method can be more conveniently
Test out the mechanical property of concrete sample.
The method is achieved in that and concrete sample is arranged in the receiving area；
Dynamic loading is applied to concrete sample by the first charging assembly；
Pulling force is applied to concrete sample, when the load value mutation that force cell shows, stops increasing pulling force and protecting
The stress of concrete sample is held, then concrete sample is observed and is recorded；Continue to increase pulling force, work as force-measuring sensing
During the load value mutation that device shows, stop increasing pulling force and keep the stress of concrete sample, then to concrete sample
Observed and recorded, untill concrete sample is without new change.
Embodiments of the invention have the advantages that：
Analysis of Concrete Tensile experimental rig simple structure, easy to use, cost is relatively low, additionally it is possible to when working concrete sample
State be simulated, to ensure that test data is more accurate.
The method of testing carried out with Analysis of Concrete Tensile experimental rig, can more conveniently test out the mechanics of concrete sample
Performance, so as to grasp its working condition, is easy to be maintained management.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structural representation of the Analysis of Concrete Tensile experimental provision of embodiment one；
Fig. 2 is the structural representation of machine frame；
Fig. 3 is the structural representation at another visual angle of machine frame；
Fig. 4 is the structural representation of the second charging assembly.
Icon：10- machine frames；101- bases；The support members of 102- first；The draw-in grooves of 1021- first；The support members of 103- second；
The draw-in grooves of 1031- second；The support members of 104- the 3rd；The draw-in grooves of 1041- the 3rd；The tensioning members of 105- first；106- locating parts；107- second
Tensioning member；The tensioning members of 108- the 3rd；109- first laser displacement meters；110- second laser displacement meters；The reinforcers of 111- first；
The reinforcers of 112- second；The reinforcers of 113- the 3rd；114- fixtures；20- force cells；The charging assemblies of 30- first；40-
Two charging assemblies；401-U type parts；402- annular elements；403- jack；50- concrete samples.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Present invention implementation generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to explanation, term " on ", " interior ", the orientation of the instruction such as " outward " or position close
System is that, based on orientation shown in the drawings or position relationship, or the orientation usually put when using of the invention product or position are closed
System, or the orientation that usually understands of those skilled in the art or position relationship, or the invention product are usually put when using
The orientation or position relationship put, are for only for ease of the description present invention and simplify description, rather than the dress for indicating or implying meaning
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the invention
System.Additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively heavy
The property wanted.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or one
The connection of body ground；Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to indirect by intermediary
It is connected, can is two connections of element internal.For the ordinary skill in the art, can be with concrete condition understanding
State term concrete meaning in the present invention.
Embodiment 1
With reference to shown in Fig. 1, the embodiment of the present invention one provides a kind of Analysis of Concrete Tensile experimental provision, and it is used for concrete
Test specimen 50 carries out extension test, including machine frame 10, the charging assembly 30 of force cell 20 and first.
Referring to figs. 2 and 3 shown, machine frame 10 includes base 101, the first support member 102 and the second support member 103.
Base 101 is a rectangular slab, and base 101 has length direction and width, the first support member 102 and second
Support member 103 is disposed on base 101 along the length direction of base 101, the first support member 102 and the second support member 103 it
Between spacing can adjust as needed, can be by spiral shell between the first support member 102 and the second support member 103 and base 101
Nail is connected, or is welded to connect, screw connecting mode convenient disassembly, welding connecting mode firm stable.
First support member 102 is provided with the first draw-in groove 1021, and the first draw-in groove 1021 is U-type groove, certainly, the first draw-in groove 1021
Can also be the groove of V-groove or other shapes, the openend of the first draw-in groove 1021 be located at the first support member 102 away from base
101 one end.The first tensioning member 105 is provided with first draw-in groove 1021, the first tensioning member 105 is rod member, and the first tensioning member 105 is worn
The first draw-in groove 1021 is crossed, the side away from the second support member 103 positioned at the first support member 102 of the first tensioning member 105 is provided with
Locating part 106, locating part 106 can limit the first tensioning member 105 on the length direction of base 101 towards the second support member
103 movements, locating part 106 can be nut, or pin.When locating part 106 is nut, on the first tensioning member 105
It is provided with external screw thread；When locating part 106 is pin, pin hole can be opened up on the first tensioning member 105.
Second support member 103 is provided with the second draw-in groove 1031, and the second draw-in groove 1031 is U-type groove, certainly, the second draw-in groove 1031
Can also be the groove of V-groove or other shapes, the openend of the second draw-in groove 1031 be located at the first support member 102 away from base
101 one end.The second tensioning member 107 is provided with second draw-in groove 1031, the second tensioning member 107 is rod member, and the second tensioning member 107 is worn
The second draw-in groove 1031 is crossed, the position that the second tensioning member 107 is located at the second draw-in groove 1031 can be processed into flat, its thickness gauge
The very little width than the second draw-in groove 1031 is smaller, can so prevent the second tensioning member 107 from rotating.Second tensioning member 107 be close to
One end of first support member 102 is connected with one end of force cell 20, force cell 20 away from the second tensioning member 107
One end is provided with the 3rd tensioning member 108, and the 3rd tensioning member 108 is also rod member, the 3rd tensioning member 108 away from force cell 20
One end can be provided with screwed hole, so be easy to be connected with concrete sample 50.
It should be noted that projection and first draw-in groove 1021 of second draw-in groove 1031 on the first support member 102 are overlapped, when
So, it is also possible to do not overlap.The bottom land of the first draw-in groove 1021 is to the bottom land of distance and second draw-in groove 1031 of base 101 to base
101 distance is identical, and certainly, the distance of the bottom land of the first draw-in groove 1021 to base 101 is with the bottom land of the second draw-in groove 1031 on earth
The distance of seat 101 can also be differed.
First charging assembly 30 is located at the top of base 101, the first charging assembly 30 and base 101, the first support member 102
Receiving area is surrounded with the second support member 103, the receiving area is used to place concrete sample 50, one end of concrete sample 50 and the
One end connection near the second support member 103 of one tensioning member 105, the other end of concrete sample 50 and the second tensioning member 107
One end connection away from force cell 20, the first charging assembly 30 is used to apply dynamic loading to concrete sample 50.This reality
Apply in example, the first loaded member is supported by portal frame and fixed, and across machine frame 10, portal frame can be by column and horizontal stroke to portal frame
Beam connection is made.
First laser displacement meter 109 and second laser displacement are additionally provided between first support member 102 and the second support member 103
Meter 110.The quantity of first laser displacement meter 109 can be one, or multiple, and first laser displacement meter 109 is located at and leans on
One end of nearly first support member 102, first laser displacement meter 109 can be fixed on base 101, it is also possible to be fixed on first
In support member 102；The quantity of second laser displacement meter 110 can be one, or multiple, second laser displacement meter 110
In near one end of the second support member 103, second laser displacement meter 110 can be fixed on base 101, it is also possible to be fixed on the
On two support members 103.Concrete sample 50 is located between first laser displacement meter 109 and second laser displacement meter 110, and first swashs
Light displacement meter 109 and second laser displacement meter 110 are used to the concrete examination during tension test of test concrete sample 50
The misalignment at the two ends of part 50.
The side away from the first support member 102 of the second support member 103 is provided with the second charging assembly 40, the second charging assembly
40 are used to apply pulling force to concrete sample 50.As shown in figure 4, the second charging assembly 40 includes U-shaped part 401, the and of annular element 402
Jack 403, annular element 402 can be rectangle, or circular or ellipse.Annular element 402 connects with the second tensioning member 107
Connect, the radial direction of annular element 402 is consistent with the length direction of base 101, U-shaped part 401 passes through annular element 402, U-shaped part 401
Two free ends be located at the both sides of annular element 402 and be connected with the second support member 103 respectively, two free ends of U-shaped part 401
Also respectively positioned at the both sides of the second draw-in groove 1031；The bottom of jack 403 is fixed on the bottom connection of U-shaped part 401 and positioned at U-shaped
The outside of part 401, i.e. jack 403 are arranged at the side away from the second support member 103 of the bottom of U-shaped part 401, jack
403 other end is connected with annular element 402, and the position and annular element 402 and second that annular element 402 is connected with jack 403 are drawn
The position of the connection of part 107 is stretched respectively positioned at the opposite side of annular element 402.
The 3rd support member 104, force-measuring sensing are also provided between first support member 102 and second support member 103
Device 20 is located between the second support member 103 and the 3rd support member 104, and now, second laser displacement meter 110 will be arranged on the 3rd
The side away from the second support member 103 of support member 104.3rd support member 104 is provided with the 3rd draw-in groove 1041, and the 3rd draw-in groove 1041 is
U-type groove, certainly, the 3rd draw-in groove 1041 can also be the groove of V-groove or other shapes, and the openend of the 3rd draw-in groove 1041 is located at the
One end away from base 101 of three support members 104, the 3rd tensioning member 108 passes through the 3rd draw-in groove 1041, the 3rd tensioning member 108
Position at the 3rd draw-in groove 1041 can be processed into flat, and its thickness is more smaller than the width of the 3rd draw-in groove 1041, this
Sample can prevent the 3rd tensioning member 108 from rotating.
It should be noted that can be connected by screw, or weld between the 3rd support member 104 and base 101
Connection, screw connecting mode convenient disassembly, welding connecting mode firm stable.3rd draw-in groove 1041 is on the first support member 102
Projection and the first draw-in groove 1021 overlap, it is of course also possible to not overlap.Distance of the bottom land of the 3rd draw-in groove 1041 to base 101
Bottom land with the second draw-in groove 1031 can be with identical to the distance of base 101, it is also possible to differs.
The both sides of first support member 102, the second support member 103 and the 3rd support member 104 on the width of base 101
The first reinforcer 111 can be provided with, the first reinforcer 111 enables to the first support member 102, the second support member 103 and
Three support members 104 are more firm on base 101, it is not easy to rock, and can bear bigger support force.
The side of first support member 102, the second support member 103 and the 3rd support member 104 on the length direction of base 101
Or both sides can be provided with the second reinforcer 112, in the present embodiment, in the first support member 102 near the second support member 103
Side is provided with the second reinforcer 112, and the side near the first support member 102 of the second support member 103 is provided with the second reinforcer
112, the both sides of the 3rd support member 104 are designed with the second reinforcer 112, and the second reinforcer 112 further causes first
Support member 102, the second support member 103 and the 3rd support member 104 are more firm on base 101, it is not easy to rock, and can bear
Bigger support force.
The side away from the first support member 102 of base 101 is provided with the 3rd reinforcer 113, and the 3rd reinforcer 113 can edge
The length direction of base 101 is set, it is also possible to set along the width of base 101, can also be in the length direction of base 101
Arranged in a crossed manner with width, the 3rd reinforcer 113 substantially increases the intensity of base 101, preferably ensure that base 101
Do not allow yielding.
Both sides of first reinforcer 111 on the length direction of base 101 are provided with fixture 114, and fixture 114 is L-type
Part, L-type part wherein while be fixedly connected with the first reinforcer 111, the another side of L-type part can be fixedly connected with the ground,
Can be connected with other objects.
Embodiment 2
The embodiment of the present invention two carries out Analysis of Concrete Tensile there is provided a kind of solidifying native tensile test apparatus using embodiment one
Method of testing, the method can more conveniently test out the mechanical property of concrete sample 50, so as to grasp its working condition,
It is easy to be maintained maintenance.
The Analysis of Concrete Tensile method of testing is achieved in that first concrete sample to be measured 50 is arranged at is accommodated in area,
One end of concrete sample 50 is connected with one end of the first tensioning member 105, the other end of concrete sample 50 and the 3rd tensioning member
108 one end connection；Then dynamic loading is applied to concrete sample 50 by the first charging assembly 30；Pass through jack again simultaneously
403 pairs of concrete samples 50 apply pulling force, when the load value mutation of the display of force cell 20, stop increasing pulling force and keeping
The stress of concrete sample 50, is then observed and is recorded to concrete sample 50；Continue to increase pulling force, when dynamometry is passed
During the load value mutation of the display of sensor 20, stop increasing pulling force and keep the stress of concrete sample 50, then to coagulation
Native test specimen 50 is observed and recorded, untill when concrete sample 50 is without new change or smaller change.
It should be noted that the method for testing to concrete sample 50 in the case of dynamic loading is applied can also be as follows：First
Apply the pulling force of certain rank to concrete sample 50, then dynamic load is applied to concrete sample 50 by the first charging assembly 30
Lotus, when dynamic loading is to certain effect number of times, stops loading dynamic loading, and then concrete sample 50 is observed and recorded；
Dynamic load is continued to, during to certain effect number of times, stops loading dynamic loading, then concrete sample 50 is observed and remembered
Record, untill when concrete sample 50 is without new change or smaller change.
The concrete sample 50 for more renewing, now the first charging assembly 30 not to concrete sample 50 apply dynamic loading, only
Pulling force is applied to concrete sample 50 by jack 403.When the load value mutation of the display of force cell 20, stop increasing
Pulling force simultaneously keeps the stress of concrete sample 50, and then concrete sample 50 is observed and recorded；Continue to increase and draw
Power, when the load value mutation of the display of force cell 20, stops increasing pulling force and keeps the stress of concrete sample 50,
Then concrete sample 50 is observed and recorded, until concrete sample 50 without new change or change it is smaller when
Untill.In the case of dynamic loading can be applied to concrete sample 50 with the first charging assembly 30 with test data in this case
The data of test are analyzed.
It should be noted that can also be by applying the pulling force of different stage to concrete sample 50 come to concrete sample
50 carry out extension test, pulling force are directly exactly increased to predetermined size when test, without what is be mutated by load
Change to judge whether to stop increasing pulling force, then under the pulling force effect of different stage, observe and record test result.
Also, it should be noted that fine sand can be laid between concrete sample 50 and base 101, and survey as stated above
Try and record test data.Then can be analyzed with without the data tested when laying fine sand with the data.
Also, it should be noted that the data of needs record have the stress size of concrete sample 50, concrete when test
There is width, the surface of concrete sample 50 of the quantity of crackle and crackle on the displacement at the two ends of test specimen 50, concrete sample 50
Strain and reinforcing bar strain etc..
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of Analysis of Concrete Tensile experimental rig, for carrying out extension test to concrete sample, it is characterised in that including frock
Frame, force cell and the first charging assembly, the machine frame include base, the first support member and the second support member, the bottom
Seat tool has between length direction and width, the length direction of first support member and second support member along the base
Every the base is arranged at, first support member is provided with the first draw-in groove, and second support member is provided with the second draw-in groove, described
Be provided with the first tensioning member at one draw-in groove, first tensioning member positioned at first support member away from second support member
Side be provided with locating part, the second tensioning member, close described first of second tensioning member are provided with second draw-in groove
One end of support member is connected with one end of the force cell, one end away from second tensioning member of the force cell
It is provided with the 3rd tensioning member；
First charging assembly is surrounded for placing coagulation with the base, first support member and second support member
The receiving area of native test specimen, first charging assembly is used to apply dynamic loading to concrete sample；
One end of close described second support member of first tensioning member is connected with one end of concrete sample, and the described 3rd draws
The one end away from the force cell for stretching part is connected with the other end of concrete sample.
2. Analysis of Concrete Tensile experimental rig according to claim 1, it is characterised in that the Analysis of Concrete Tensile experimental rig
Also include first laser displacement meter and second laser displacement meter, the first laser displacement meter be arranged at first support member with
Between second support member and near one end of first support member, the second laser displacement meter is arranged at described first
Between support member and second support member and near one end of second support member, concrete sample is located at described first and swashs
Between light displacement meter and the second laser displacement meter.
3. Analysis of Concrete Tensile experimental rig according to claim 2, it is characterised in that second support member away from institute
The side for stating the first support member is provided with the second charging assembly, and second charging assembly includes U-shaped part, annular element and jack,
The annular element is connected with second tensioning member, and the U-shaped part passes through the annular element, two free ends of the U-shaped part
It is connected positioned at the both sides of the annular element and respectively with second support member, one end of the jack and the U-shaped part
Bottom connect and positioned at the outside of the U-shaped part, the other end of the jack be connected with the annular element, the annular element and
The position that the position of the jack connection and the annular element are connected with second tensioning member is located at the annular element respectively
Opposite side.
4. Analysis of Concrete Tensile experimental rig according to claim 2, it is characterised in that first support member and described
The 3rd support member is additionally provided between two support members, the 3rd support member is provided with the 3rd draw-in groove, and the force cell is located at institute
State between the second support member and the 3rd support member, the second laser displacement meter is positioned at the 3rd support member away from institute
The side of the second support member is stated, the 3rd tensioning member passes through the 3rd draw-in groove.
5. Analysis of Concrete Tensile experimental rig according to claim 4, it is characterised in that second tensioning member positioned at institute
The position of the second draw-in groove is stated for flat, the position positioned at the 3rd draw-in groove of the 3rd tensioning member is flat.
6. Analysis of Concrete Tensile experimental rig according to claim 4, it is characterised in that first support member, described
The both sides of two support members and the 3rd support member on the width of the base are equipped with the first reinforcer；
The side of first support member, second support member and the 3rd support member on the length direction of the base
Or both sides are equipped with the second reinforcer；
The base is rectangular slab, and the side away from first support member of the rectangular slab is provided with the 3rd reinforcer.
7. Analysis of Concrete Tensile experimental rig according to claim 6, it is characterised in that first reinforcer is at the bottom
Both sides on the length direction of seat are provided with fixture.
8. Analysis of Concrete Tensile experimental rig according to claim 4, it is characterised in that second draw-in groove and the described 3rd
Projection of the draw-in groove on first support member is Chong Die with first draw-in groove.
9. Analysis of Concrete Tensile experimental rig according to claim 4, it is characterised in that first draw-in groove, described second
Draw-in groove and the 3rd draw-in groove are U-shaped card slot.
10. the method for testing that a kind of Analysis of Concrete Tensile experimental rig using described in claim 1-9 any one is carried out, it is special
Levy and be, concrete sample is arranged in the receiving area；
Dynamic loading is applied to the concrete sample by first charging assembly；
Pulling force is applied to the concrete sample, when the load value mutation that the force cell shows, stops increasing pulling force
And the stress of the concrete sample is kept, the concrete sample is observed and recorded；Continue to increase pulling force, when
During the load value mutation that the force cell shows, stop increasing pulling force and keep the stress of the concrete sample,
The concrete sample is observed and recorded, untill the concrete sample is without new change；
The concrete sample for more renewing, now first charging assembly not to the concrete sample apply dynamic loading,
Only pass through concrete sample described in the jack pair and apply pulling force, when the load value mutation that the force cell shows,
Stop increasing pulling force and keep the stress of the concrete sample, then the concrete sample is observed and remembered
Record；Continue to increase pulling force, when the load value mutation that the force cell shows, stop increasing pulling force and keeping the coagulation
The stress of native test specimen, is then observed and is recorded to the concrete sample, until the concrete sample is without new change
Turn to only.
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