CN108303320A - A kind of device and method applying prestressing force and pull-out test - Google Patents
A kind of device and method applying prestressing force and pull-out test Download PDFInfo
- Publication number
- CN108303320A CN108303320A CN201810161701.1A CN201810161701A CN108303320A CN 108303320 A CN108303320 A CN 108303320A CN 201810161701 A CN201810161701 A CN 201810161701A CN 108303320 A CN108303320 A CN 108303320A
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- China
- Prior art keywords
- stull
- displacement
- reinforcing bar
- prestressing force
- pull
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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
-
- 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
-
- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
-
- 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
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a kind of device and method applying prestressing force and pull-out test, including：Supporting rack, stull, the first displacement limit device, second displacement limits device, horizontal axis, jack and force snesor；Can upper and lower position adjusting be carried out to stull according to actual needs；First displacement limit device and the connection type of stull are set as card slot connection type, and the first displacement limit device may make to realize the arbitrary movement on left and right directions in stull；Horizontal axis is detachably connected with second displacement limits device, can flexibly carry out the installation and removal operation of second displacement limits device；Jack and force snesor are placed in second displacement limits device, jack, which is reinforcing bar application prestressing force and/or pulling capacity, force snesor, can read the power sizes values of prestressing force and/or pulling capacity.Solving existing reinforcing bar reliability test ancillary equipment weighted platform is inconvenient to move, and test number of steel bars is few, and caused testing efficiency is low, spends human and material resources and the technical issues of financial resources.
Description
Technical field
The present invention relates to building auxiliary equipment technical field more particularly to a kind of devices applying prestressing force and pull-out test
And method.
Background technology
With the fast development and increase of the mankind to the awareness of safety of living environment of modern architecture industry, building safety is
A focus being currently concerned, reinforced concrete structure play very important effect in modern architecture safety.
In reinforced concrete structure, between reinforcing bar and concrete there are cementation both be it is cooperative substantially before
It carries, can cause to generate apparent variation with the adhesive property of concrete after steel bar corrosion, to seriously affect the peace of building structure
Full property and durability.Therefore, it to ensure the quality of armored concrete, ensures the safety of building, needs the reliability to reinforcing bar
Carry out relevant testing experiment.
Currently, people are to apply prestressing force and pull-out test mostly to the test method that the reliability of reinforcing bar carries out, and into
These tests of row need ancillary equipment to carry out test back work, and existing reinforcing bar reliability test ancillary equipment weighted platform is not
It is moved easily, the quantity for testing reinforcing bar is few, causes testing efficiency low, spends human and material resources and financial resources.
Invention content
An embodiment of the present invention provides a kind of device and method applying prestressing force and pull-out test, solve existing steel
Muscle reliability test ancillary equipment weighted platform is inconvenient to move, and test number of steel bars is few, and caused testing efficiency is low, expends
The technical issues of manpower and materials and financial resources.
A kind of device applying prestressing force and pull-out test provided by the invention, including：Supporting rack, stull, the first displacement
Limits device, second displacement limits device, horizontal axis, jack and force snesor；
The stull is fixedly connected with support frame as described above；
The horizontal axis is detachably connected with the second displacement limits device；
First displacement limit device is connect with the stull card slot；
The second displacement limits device is detachably connected by the horizontal axis and first displacement limit device；
The jack is fixedly connected with the second displacement limits device；
The force snesor is fixedly connected with first displacement limit device.
Preferably, further include：First detachable half steel ring, first fix half steel ring, the second detachable half steel ring and second
Fix half steel ring；First detachable half steel ring and described first fixes half steel ring and is fixed on the second displacement limits device
Upper bottom surface, for fixing the jack；Second detachable half steel ring and described second fix half steel ring be fixed on it is described
First displacement limit device bottom surface, for fixing force snesor.
Preferably, support frame as described above top is provided at least one the first hole passed through for reinforcing bar；First hole
Nut is provided on hole, for reinforcing bar to be fixed on support frame as described above.
Preferably, it is provided with the second hole at the top of the stull；The size of second hole and first hole are big
It is small consistent；The center of second hole and the center of first hole are in same vertical line；The number of second hole
Amount is identical as the quantity of the first hole；Second hole is provided with the nut consistent with first hole, and being used for will
Reinforcing bar is fixed in the stull.
Preferably, the stull bottom is provided with the first groove；First groove is for first displacement limitation dress
It sets and is connect with the stull.
Preferably, first displacement limit device is provided with hangers so that first displacement limit device passes through institute
Hangers is stated arbitrarily to move in the stull with first groove.
Preferably, support frame as described above two side legs erection is equipped with third hole；The stull both sides are provided with the 4th hole；Institute
It states the 4th hole to correspond with the third hole, for being fixedly connected between support frame as described above and the stull.
Preferably, further include：First screw and the first bolt；First screw and first bolt are fixed on described
Supporting rack, for fixing the stull and support frame as described above.
Preferably, further include：Second screw and the second bolt；Second screw and second bolt are for described the
One fixes between half steel ring and the described first detachable half steel ring to be fixedly connected and fixes half steel ring and described second with described second
It is fixedly connected between detachable half steel ring.
Preferably, casing is provided in the middle part of the horizontal axis, described sleeve pipe is used for being fixedly connected between reinforcing bar and horizontal axis；Institute
It states horizontal axis and is provided at both ends with the second groove, the second displacement limits device is fixed by second groove and the horizontal axis to be connected
It connects.
Preferably, described sleeve pipe is cylinder-shaped sleeve.
Preferably, first displacement limit device both sides are provided with third groove；The third groove is for placing institute
State horizontal axis.
The method provided by the invention for applying prestressing force and pull-out test, including：
S1：First displacement limit device is fixed in stull, the stull is fixed on supporting rack；
S2：Reinforcing bar is passed through into support frame as described above and the stull, and reinforcing bar and support frame as described above connecting pin are fixed；According to
Reinforcing bar length carries out the stull adjusting in vertical direction so that the length in reserve of reinforcing bar meets testing length, and again
Fix the stull；
S3：Horizontal axis is placed on across first displacement limit device on first displacement limit device, by second
Displacement limit device is fixed on the horizontal axis, and jack and power sensing are placed in the second displacement limits device medium position
Device, and fix the jack and the force snesor；
S4：If carrying out pull-out test to reinforcing bar, then prestretching is carried out to reinforcing bar, it is ensured that after it is axially stretched, by described
Jack carries out prestretching load, until reinforcing bar destroys, the value of pulling capacity when destroying is recorded by the force snesor；If to reinforcing bar
Row prestressing force is tested, then prestressing force preloading is carried out by the jack pair reinforcing bar, when the application that the force snesor is shown
Prestressing force reach and stop after desired value applying prestressing force；
S5：After completing step S4, the force snesor and the jack are unloaded, and execute step S2, started next
The pull-out test or prestressing force of root reinforcing bar are tested.
As can be seen from the above technical solutions, the present invention has the following advantages：
A kind of device applying prestressing force and pull-out test provided by the invention, including：Supporting rack, stull, the first displacement
Limits device, second displacement limits device, horizontal axis, jack and force snesor；It, can basis by fixing stull and supporting rack
Actual needs carries out upper and lower position adjusting to stull；First displacement limit device and the connection type of stull are set as card slot connection
Mode may make the first displacement limit device to realize the arbitrary movement on left and right directions in stull；Horizontal axis is limited with second displacement
Device processed is detachably connected, and can flexibly carry out the installation and removal operation of second displacement limits device；Jack and power are sensed
Device is placed in second displacement limits device, and jack, which is reinforcing bar application prestressing force and/or pulling capacity, force snesor, to be read
The power sizes values of prestressing force and/or pulling capacity.It is inconvenient to solve existing reinforcing bar reliability test ancillary equipment weighted platform
Mobile, test number of steel bars is few, and caused testing efficiency is low, spends human and material resources and the technical issues of financial resources.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of schematic diagram of one embodiment of device applying prestressing force and pull-out test provided by the invention；
Fig. 2 is a kind of side view of device stull applying prestressing force and pull-out test provided by the invention；
Fig. 3 is a kind of front view of device horizontal axis applying prestressing force and pull-out test provided by the invention；
Fig. 4 is a kind of vertical view of device support stand applying prestressing force and pull-out test provided by the invention；
Fig. 5 is a kind of vertical view of device stull applying prestressing force and pull-out test provided by the invention；
Fig. 6 is a kind of side view of device support stand applying prestressing force and pull-out test provided by the invention；
Fig. 7 is a kind of detachable half steel ring of device applying prestressing force and pull-out test provided by the invention and fixed half steel
Coil structures schematic diagram；
Fig. 8 is a kind of device fragmentary side cross-sectional view applying prestressing force and pull-out test provided by the invention；
Fig. 9 is a kind of method flow schematic diagram applying prestressing force and pull-out test provided by the invention；
Wherein, reference numeral is：
1, supporting rack；2, reinforcing bar；3, I-shaped support frame；4, casing；5, horizontal axis；6, the first displacement limit device；7,
Two displacement limit devices；8, jack；9, force snesor；10, nut；11, the 4th hole；12, the first bolt；13, the first spiral shell
Silk；14, third hole；15, the second groove；16, the first hole；17, the second hole；18, half steel ring is fixed；19, detachable half
Steel ring；20, the second bolt；21, the second screw；22, the first groove.
Specific implementation mode
It is existing for solving an embodiment of the present invention provides a kind of device and method applying prestressing force and pull-out test
Reinforcing bar reliability test ancillary equipment weighted platform is inconvenient to move, and test number of steel bars is few, and caused testing efficiency is low, consumption
The technical issues of taking manpower and materials and financial resources.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, a kind of one embodiment of device applying prestressing force and pull-out test provided by the invention, packet
It includes：Supporting rack 1, stull 3, the first displacement limit device 6, second displacement limits device 7, horizontal axis 5, jack 8 and force snesor
9；
Stull 3 is fixedly connected with supporting rack 1；
Horizontal axis 5 is detachably connected with second displacement limits device 7；
First displacement limit device 6 is connect with 3 card slot of stull；
Second displacement limits device 7 is detachably connected by horizontal axis 5 and the first displacement limit device 6；
Jack 8 is fixedly connected with second displacement limits device 7；
Force snesor 9 is fixedly connected with the first displacement limit device 6.
It should be noted that jack 8 is placed in second displacement limits device 7, and by fixing piece by 8 He of jack
Second displacement limits device 7 is fixed；Force snesor 9 is placed on jack 8, and by fixing piece by force snesor 9 and first
Displacement limit device 6 is fixed.
A kind of device applying prestressing force and pull-out test provided in an embodiment of the present invention, including：Supporting rack 1, stull 3,
First displacement limit device 6, second displacement limits device 7, horizontal axis 5, jack 8 and force snesor 9；By stull 3 and supporting rack 1
It is fixed, can upper and lower position adjusting be carried out to stull 3 according to actual needs；The connection type of first displacement limit device 6 and stull 3
It is set as card slot connection type, the first displacement limit device 6 may make to realize the arbitrary movement on left and right directions in stull 3；
Horizontal axis 5 is detachably connected with second displacement limits device 7, can flexibly carry out the installation and removal behaviour of second displacement limits device 7
Make；Jack 8, which is the application prestressing force of reinforcing bar 2 and/or pulling capacity, force snesor 9, can read the power of prestressing force and/or pulling capacity
Sizes values.Solving 2 reliability test ancillary equipment weighted platform of existing reinforcing bar is inconvenient to move, and test 2 quantity of reinforcing bar is few,
Caused testing efficiency is low, spends human and material resources and the technical issues of financial resources.
It is detailed to a kind of one embodiment progress for the device applying prestressing force and pull-out test provided by the invention above
Thin description, below will be to a kind of another embodiment progress for the device applying prestressing force and pull-out test provided by the invention
Detailed description.
Please refer to Fig.1 to Fig. 8, a kind of device applying prestressing force and pull-out test provided by the invention another
Embodiment, including：
Supporting rack 1, stull 3, the first displacement limit device 6, second displacement limits device 7, horizontal axis 5, jack 8 and power pass
Sensor 9；
Stull 3 is fixedly connected with supporting rack 1；
Horizontal axis 5 is detachably connected with second displacement limits device 7；
First displacement limit device 6 is connect with 3 card slot of stull；
Second displacement limits device 7 is detachably connected by horizontal axis 5 and the first displacement limit device 6；
Jack 8 is fixedly connected with second displacement limits device 7；
Force snesor 9 is fixedly connected with the first displacement limit device 6.
It should be noted that jack 8 is placed in second displacement limits device 7, and by fixing piece by 8 He of jack
Second displacement limits device 7 is fixed；Force snesor 9 is placed on jack 8, and by fixing piece by force snesor 9 and first
Displacement limit device 6 is fixed.
Further, further include：First detachable half steel ring, first fix half steel ring, the second detachable half steel ring and
Two fix half steel ring；First detachable half steel ring and first fixes half steel ring and is fixed on 7 upper bottom surface of second displacement limits device, uses
In fixed jack 8；Second detachable half steel ring and second fixes half steel ring and is fixed on 6 bottom surface of the first displacement limit device,
For fixing force snesor 9.
It should be noted that there are two detachable half steel rings 19, the respectively first detachable half steel ring and second is detachably
Half steel ring；It fixes there are two half steel rings 18, half steel ring is respectively fixed with the first detachable half steel ring corresponding first and with
Two detachable half steel rings corresponding second fix half steel ring；First fixes half steel ring and the first detachable half steel ring for fixing thousand
Jin top 8, second fixes half steel ring and the second detachable half steel ring for fixing force snesor 9, and jack 8 and power may make to sense
Device 9 is accurately fixed on the center of second displacement limits device 7, prevents force snesor 9 and jack 8 is fallen or deviation, keep away
Safety problem is exempted from caused by force snesor 9 and/or jack 8 are fallen and because of 8 deviation of force snesor 9 and/or jack
Caused by apply the inaccurate error problem of prestressing force and/or pulling capacity.
Further, 1 top of supporting rack is provided at least one the first hole 16 passed through for reinforcing bar 2；First hole
Nut 10 is provided on 16, for reinforcing bar 2 to be fixed on support frame as described above 1.
It should be noted that in order to enable reinforcing bar 2 to pass through supporting rack 1, it is provided with and can makes on 1 top of supporting rack
Reinforcing bar 2 by the first hole 16, the quantity of the first hole 16 is at least one, when the quantity of the first hole 16 is multiple
It waits, may make more reinforcing bars 2 that can pass through supporting rack 1.
It should be noted that reinforcing bar 2 can be FRP tendons, nut 10 is set at the first hole 16 and is conducive to wear in reinforcing bar 2
Supporting rack 1 is crossed reinforcing bar 2 is fixed on supporting rack 1 later.
Further, 3 top of stull is provided with the second hole 17；The size of second hole 17 and 16 size one of the first hole
It causes；The center of second hole 17 and the center of the first hole 16 are in same vertical line；The quantity of second hole 17 and the first hole
The quantity in hole 16 is identical；Second hole 17 is provided with the nut consistent with the first hole 16, for reinforcing bar 2 to be fixed on stull 3
On.
It should be noted that in order to enable reinforcing bar 2 to pass through stull 3, reinforcing bar can be made by being provided on 3 top of stull
2 by the second hole 17, the size of the second hole 17 and first hole 16 are in the same size；The center of second hole 17 with
The center of first hole 16 is in same vertical line；The quantity of second hole 17 is identical as the quantity of the first hole 16, can make
It obtains reinforcing bar 2 to be disposed vertically, ensures the accuracy of test.
Further, 3 bottom of stull is provided with the first groove 22；First groove 22 for the first displacement limit device 6 with
Stull 3 connects.
It should be noted that 3 bottom of stull is provided with the first groove 22, for realizing the first displacement limit device 6 and cross
3 connection of support.
Further, the first displacement limit device 6 is provided with hangers so that the first displacement limit device 6 by hangers with
First groove 22 arbitrarily moves in stull 3.
It should be noted that the first displacement limit device 6 and 22 junction of the first groove are arranged to hangers form so that
First displacement limit device 6 forms the mode that card slot is connect with the first groove 22, so as to realize the first displacement limit device 6
The arbitrary movement of the horizontal direction in stull 3 by hangers and the first groove 22.
Further, 1 two side legs of supporting rack erection is equipped with third hole 14；3 both sides of stull are provided with the 4th hole 11；The
Four holes 11 are corresponded with third hole 14, are used to support between frame 1 and stull 3 and are fixedly connected.
It should be noted that being equipped with third hole 14 in the erection of 1 two side legs of supporting rack, supporting rack 1 and stull 3 may be implemented
Between be fixedly connected, while the mobile adjusting of stull 3 in vertical direction may be implemented；It is provided with and props up in 3 both sides of stull
14 one-to-one 4th hole 11 of third hole of 1 both sides of support, may make stull 3 that can pass through fixing piece with supporting rack 1
It is fixedly connected.
Further, further include：First screw 13 and the first bolt 12；First screw 13 and the first bolt 12 are fixed on branch
Support 1, for fixing stull 3 and supporting rack 1.
It should be noted that the first screw 13 and the first bolt 12 pass through on the third hole 14 and stull 3 on supporting rack 1
The 4th hole 11 stull 3 and supporting rack 1 are fixed.
Further, further include：Second screw 21 and the second bolt 20；Second screw 21 and the second bolt 20 are used for first
Fix between half steel ring and the first detachable half steel ring be fixedly connected with second fix half steel ring and the second detachable half steel ring it
Between be fixedly connected.
It should be noted that half steel ring 18 and detachable half steel ring 19 will be fixed by the second screw 21 and the second bolt 20
It tightens so that jack 8 to be fixed in second displacement limits device 7, prevents jack 8 from falling or deviation.
Further, 5 middle part of horizontal axis is provided with casing 4, and horizontal axis 5 is fixedly connected by casing 4 with reinforcing bar 2；5 both ends of horizontal axis
It is provided with the second groove 15, second displacement limits device 7 is fixedly connected by the second groove 15 with horizontal axis 5.
It should be noted that two the second grooves 15 are arranged on horizontal axis 5, second displacement limits device 7 is stuck in second
It is fixed in groove 15, casing 4 is set at 5 middle part of horizontal axis, casing 4 is internally provided with the screw thread anchored for reinforcing bar 2, is used for
The anchor connection of reinforcing bar 2 and horizontal axis 5, so that the active force that the jack 8 in second displacement limits device 7 applies can cross effect
On reinforcing bar 2.
Further, casing 4 is cylinder-shaped sleeve.
It to be managed it should be noted that casing 4 can be cylinder, can also be square bushing.
Further, 6 both sides of the first displacement limit device are provided with third groove；Third groove is for placing horizontal axis 5.
It should be noted that horizontal axis 5 is positioned over by third groove on the first displacement limit device 6, second displacement is realized
The connection of limits device 7 and the first displacement limit device 6.
A kind of device applying prestressing force and pull-out test provided in an embodiment of the present invention, including：Supporting rack 1, stull 3,
First displacement limit device 6, second displacement limits device 7, horizontal axis 5, jack 8 and force snesor 9；By screw by stull 3
It is fixed with supporting rack 1, can upper and lower position adjusting be carried out to stull 3 according to actual needs；First displacement limit device 6 and stull 3
Connection type be set as card slot connection type, may make the first displacement limit device 6 to be realized on left and right directions in stull 3
It is arbitrary mobile；Horizontal axis 5 is detachably connected with second displacement limits device 7, can flexibly carry out the installation of second displacement limits device 7
And disassembling section；Jack 8 and force snesor 9 are placed in second displacement limits device 7, jack 8 applies pre- for reinforcing bar 2
Stress and/or pulling capacity, force snesor 9 can read the power sizes values of prestressing force and/or pulling capacity.Solves existing reinforcing bar
2 reliability test ancillary equipment weighted platforms are inconvenient to move, and test 2 quantity of reinforcing bar is few, and caused testing efficiency is low, expend
The technical issues of manpower and materials and financial resources.
It is saying to a kind of another embodiment of the device for applying prestressing force and pull-out test provided by the invention above
It is bright, a kind of method applying prestressing force and pull-out test provided by the invention will be described in detail below.
Referring to Fig. 9, a kind of method applying prestressing force and pull-out test provided by the invention, including：
Step 101：First displacement limit device is fixed in stull, stull is fixed on supporting rack；
Step 102：Reinforcing bar is passed through into supporting rack and stull, and reinforcing bar and supporting rack connecting pin are fixed；It is long according to reinforcing bar
Spend the adjusting carried out to stull in vertical direction so that the length in reserve of reinforcing bar meets testing length, and fixes stull again；
Step 103：Horizontal axis is placed on across the first displacement limit device on the first displacement limit device, by second displacement
Limits device is fixed on transverse axis, places jack and force snesor in second displacement limits device medium position, and fix
Jack and force snesor；
Step 104：If carrying out pull-out test to reinforcing bar, then prestretching is carried out to reinforcing bar, it is ensured that after it is axially stretched, pass through
Jack carries out prestretching load, until reinforcing bar destroys, the value of pulling capacity when destroying is recorded by force snesor；If pre- to reinforcing bar row
Stress test then carries out prestressing force preloading, when the prestressing force for the application that force snesor is shown reaches by jack pair reinforcing bar
Stop applying prestressing force after desired value；
Step 105：After completing step 104, force snesor and jack are unloaded, and execute step 102, starts next
The pull-out test or prestressing force of reinforcing bar are tested.
It should be noted that a kind of prestressing force and the method for pull-out test of applying provided in an embodiment of the present invention can also have
Body is refined as：
Step 201：First displacement limit device is fixedly connected by the first groove with stull, third hole and are passed through
Stull is fixedly connected by four holes using the first bolt and the first bolted fastener with supporting rack；
Step 202：Reinforcing bar is passed through into the first hole and the second hole, nut is used in combination to fix；
Step 203：Up and down adjustment is carried out to I-shaped stull according to reinforcing bar length so that the length in reserve of reinforcing bar meets survey
Length is tried, and fixes the I-shaped stull；
Step 204：Horizontal axis is placed on third groove, and is anchored reinforcing bar using casing, adjusts the first displacement
The position of limits device so that the center of the first displacement limit device and the center of casing are in same vertical line；
Step 205：Second displacement limits device is fixed by the second groove on transverse axis, in second displacement limits device
Medium position places hydraulic jack and force snesor, and passes through the second bolt, the second screw, detachable half steel ring and fixed half
Steel ring is by jack and force snesor and is fixed in second displacement limits device；
Step 206：All nuts, screw and bolt are tightened, if carrying out pull-out test to reinforcing bar, then reinforcing bar is carried out pre-
It draws, it is ensured that after it is axially stretched, prestretching load is carried out by jack, until reinforcing bar destroys, when being destroyed by force snesor record
The value of pulling capacity；If testing reinforcing bar row prestressing force, then prestressing force preloading is carried out by jack pair reinforcing bar, when power senses
The prestressing force for the application that device is shown stops applying prestressing force after reaching desired value；
Step 207：After completing step 206, force snesor and jack are unloaded, and execute step 202, starts next
The pull-out test or prestressing force of reinforcing bar are tested.
A kind of method applying prestressing force and pull-out test provided in an embodiment of the present invention, by stull and is supported by screw
Frame is fixed, and can carry out upper and lower position adjusting to stull according to actual needs；The connection type of first displacement limit device and stull
It is set as card slot connection type, the first displacement limit device may make to realize the arbitrary movement on left and right directions in stull；It is horizontal
Axis is detachably connected with second displacement limits device, can flexibly carry out the installation and removal operation of second displacement limits device；It will
Jack and force snesor are placed in second displacement limits device, and jack is that reinforcing bar applies prestressing force and/or pulling capacity, power
Sensor can read the power sizes values of prestressing force and/or pulling capacity.Solves existing reinforcing bar reliability test ancillary equipment
Weighted platform is inconvenient to move, and test number of steel bars is few, and caused testing efficiency is low, spends human and material resources the technology with financial resources
Problem.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (13)
1. a kind of device applying prestressing force and pull-out test, which is characterized in that including：Supporting rack, stull, the first displacement limitation
Device, second displacement limits device, horizontal axis, jack and force snesor；
The stull is fixedly connected with support frame as described above；
The horizontal axis is detachably connected with the second displacement limits device；
First displacement limit device is connect with the stull card slot；
The second displacement limits device is detachably connected by the horizontal axis and first displacement limit device；
The jack is fixedly connected with the second displacement limits device；
The force snesor is fixedly connected with first displacement limit device.
2. the device according to claim 1 for applying prestressing force and pull-out test, which is characterized in that further include：First can
Dismantle half steel ring, first fix half steel ring, the second detachable half steel ring and second fixes half steel ring；The first detachable half steel
Circle fixes half steel ring with described first and is fixed on the second displacement limits device upper bottom surface, for fixing the jack；Institute
It states the second detachable half steel ring and described second to fix half steel ring and be fixed on the first displacement limit device bottom surface, for solid
Determine force snesor.
3. the device according to claim 1 for applying prestressing force and pull-out test, which is characterized in that support frame as described above top
It is provided at least one the first hole passed through for reinforcing bar；It is provided with nut on first hole, for fixing reinforcing bar
On support frame as described above.
4. the device according to claim 3 for applying prestressing force and pull-out test, which is characterized in that set at the top of the stull
It is equipped with the second hole；The size of second hole is consistent with first hole size；The center of second hole and institute
The center of the first hole is stated in same vertical line；The quantity of second hole is identical as the quantity of the first hole；Institute
It states the second hole and is provided with the nut consistent with first hole, for reinforcing bar to be fixed on the stull.
5. the device according to claim 4 for applying prestressing force and pull-out test, which is characterized in that the stull bottom is set
It is equipped with the first groove；First groove is connect for first displacement limit device with the stull.
6. the device according to claim 5 for applying prestressing force and pull-out test, which is characterized in that the first displacement limit
Device processed is provided with hangers so that first displacement limit device is by the hangers and first groove in the stull
Upper arbitrary movement.
7. the device according to claim 3 for applying prestressing force and pull-out test, which is characterized in that support frame as described above both sides
Tripod is provided with third hole；The stull both sides are provided with the 4th hole；4th hole and the third hole are one by one
It is corresponding, for being fixedly connected between support frame as described above and the stull.
8. the device according to claim 1 for applying prestressing force and pull-out test, which is characterized in that further include：First spiral shell
Silk and the first bolt；First screw and first bolt are fixed on support frame as described above, for fixing the stull and institute
State supporting rack.
9. the device according to claim 1 for applying prestressing force and pull-out test, which is characterized in that further include：Second spiral shell
Silk and the second bolt；Second screw and second bolt fix half steel ring for fixing described first；It is additionally operable to fix
First detachable half steel ring and described second is fixed half steel ring and is fixedly connected with the described second detachable half steel ring.
10. the device according to claim 1 for applying prestressing force and pull-out test, which is characterized in that in the middle part of the horizontal axis
It is provided with casing, described sleeve pipe is used for being fixedly connected between reinforcing bar and horizontal axis；The horizontal axis is provided at both ends with the second groove, institute
Second displacement limits device is stated to be fixedly connected with the horizontal axis by second groove.
11. the device according to claim 10 for applying prestressing force and pull-out test, which is characterized in that described sleeve pipe is circle
Cylindricality casing.
12. the device according to claim 1 for applying prestressing force and pull-out test, which is characterized in that first displacement
Limits device both sides are provided with third groove；The third groove is for placing the horizontal axis.
13. a kind of method applying prestressing force and pull-out test, which is characterized in that including：
S1：First displacement limit device is fixed in stull, the stull is fixed on supporting rack；
S2：Reinforcing bar is passed through into support frame as described above and the stull, and reinforcing bar and support frame as described above connecting pin are fixed；According to reinforcing bar
Length carries out the stull adjusting in vertical direction so that the length in reserve of reinforcing bar meets testing length, and retightens
The good stull；
S3：Horizontal axis is placed on across first displacement limit device on first displacement limit device, by second displacement
Limits device is fixed on the horizontal axis, and jack and force snesor are placed in the second displacement limits device medium position,
And fix the jack and the force snesor；
S4：If carrying out pull-out test to reinforcing bar, then prestretching is carried out to reinforcing bar, it is ensured that after it is axially stretched, by described very heavy
Jacking row prestretching loads, until reinforcing bar destroys, the value of pulling capacity when destroying is recorded by the force snesor；If pre- to reinforcing bar row
Stress test then carries out prestressing force preloading by the jack pair reinforcing bar, pre- when the application that the force snesor is shown
Stress stops applying prestressing force after reaching desired value；
S5：After completing step S4, the force snesor and the jack are unloaded, and execute step S2, starts next steel
The pull-out test or prestressing force of muscle are tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161701.1A CN108303320A (en) | 2018-02-26 | 2018-02-26 | A kind of device and method applying prestressing force and pull-out test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161701.1A CN108303320A (en) | 2018-02-26 | 2018-02-26 | A kind of device and method applying prestressing force and pull-out test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108303320A true CN108303320A (en) | 2018-07-20 |
Family
ID=62848952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810161701.1A Pending CN108303320A (en) | 2018-02-26 | 2018-02-26 | A kind of device and method applying prestressing force and pull-out test |
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| Country | Link |
|---|---|
| CN (1) | CN108303320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110426344A (en) * | 2019-08-26 | 2019-11-08 | 河海大学 | A kind of self-balancing type reinforcing bar and concrete binding sliding test device and test method |
| CN112213220A (en) * | 2020-09-27 | 2021-01-12 | 西南石油大学 | Device and method for measuring erosion and friction coefficient of sand-containing hydrate slurry to pipeline |
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| CN203231940U (en) * | 2013-05-02 | 2013-10-09 | 东南大学 | Constant temperature stress corrosion testing device for FRP (Fiber Reinforced Plastic) rib |
| CN203249721U (en) * | 2013-05-21 | 2013-10-23 | 中南大学 | Adjustable longitudinal resistance testing equipment for track bed under sleeper of ballasted railway |
| CN105259043A (en) * | 2015-10-20 | 2016-01-20 | 武汉大学 | Self-balancing loading device for batch concrete-filled steel tubes |
| CN208076290U (en) * | 2018-02-26 | 2018-11-09 | 广东工业大学 | A kind of device applying prestressing force and pull-out test |
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| CN203231940U (en) * | 2013-05-02 | 2013-10-09 | 东南大学 | Constant temperature stress corrosion testing device for FRP (Fiber Reinforced Plastic) rib |
| CN203249721U (en) * | 2013-05-21 | 2013-10-23 | 中南大学 | Adjustable longitudinal resistance testing equipment for track bed under sleeper of ballasted railway |
| CN105259043A (en) * | 2015-10-20 | 2016-01-20 | 武汉大学 | Self-balancing loading device for batch concrete-filled steel tubes |
| CN208076290U (en) * | 2018-02-26 | 2018-11-09 | 广东工业大学 | A kind of device applying prestressing force and pull-out test |
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| CN110426344A (en) * | 2019-08-26 | 2019-11-08 | 河海大学 | A kind of self-balancing type reinforcing bar and concrete binding sliding test device and test method |
| CN112213220A (en) * | 2020-09-27 | 2021-01-12 | 西南石油大学 | Device and method for measuring erosion and friction coefficient of sand-containing hydrate slurry to pipeline |
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