CN208206650U - The test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material - Google Patents
The test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material Download PDFInfo
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- CN208206650U CN208206650U CN201820832681.1U CN201820832681U CN208206650U CN 208206650 U CN208206650 U CN 208206650U CN 201820832681 U CN201820832681 U CN 201820832681U CN 208206650 U CN208206650 U CN 208206650U
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Abstract
The utility model discloses a kind of test specimen measurement structure of two-way tension adhesion test of weak separation muscle material, test specimen measurement structure includes test specimen, displacement meter and the displacement meter fixture based on fixed displacement, the test specimen includes concrete test block, muscle material, it is fixed on the first muscle material anchorage of muscle material one end and is fixed on the second muscle material anchorage of the muscle material other end, muscle material is bonded through concrete test block and with concrete test block, the displacement is calculated as multiple and arranges along muscle material length direction, on two surfaces passed through positioned at the concrete test block by muscle material, the displacement meter fixture is detachable structure.The test specimen measurement structure of the two-way tension adhesion test of the utility model is suitable for the two-way tension adhesion test of weak separation muscle material, and convenient for displacement meter is fixed, and measurement is more accurate.
Description
Technical field
The utility model relates to technical field of structural engineering, more specifically a kind of two-way tension bonding of weak separation muscle material
The test specimen measurement structure of test.
Background technique
Weak separation muscle material refers mainly to steel strand wires and FRP tendons (fiber-reinforced composite material rib), they have good tension
Performance, but bending stiffness is lower, is easy to produce lateral bending under axial compressive force effect.Steel strand wires are widely applied to bridge
It is indispensable muscle material in current engineering in prestressed component in beam engineering and large-span space structure；And FRP tendons due to
The advantages that its high-strength light, good corrosion-resistant, underrelaxation and anti-fatigue performance, it is considered to be substitute the ideal muscle material of reinforcing bar.Coagulation
The compressive property of concrete and the tensile property of muscle material why can be played when soil structure stress, essentially consist in concrete and muscle
There are cementation between material, the two is able to compatible deformation, resists external force jointly.Therefore, adhesive property be concrete structure most
Basic performance.
Adhesive property is characterized by the relationship of bond stress and relative slippage, and the influence to concrete structure is main
Are as follows: under bearing capacity and serviceability limit state, can the tensile strength of muscle material be not fully exerted, and depend on it and mix
The effectiveness of solidifying soil bonding；Bond stress is too small, will lead to bearing capacity of concrete structure reduction；Bond-slip can
To be used to accurately determine muscle material anchorage length range or the lap of splice, the rigidity of structure and the calculating in crack are participated in, simultaneously
It is also one of the fundamental equation of finite element analysis.
Under geological process, wind load and vehicular load, structure can bear bidirectional load repeatedly, lead to concrete and muscle material
Between adhesive property weaken, influence the rigidity, ductility and bearing capacity of structure, ultimately cause structure destruction.Therefore, it is necessary to grind
Study carefully bidirectional load repeatedly and act on lower adhesive property between muscle material and concrete, to judge muscle material anchorage length range or take
Spreading degree, while having on the resilience performance of analysis component and being tied under extremely important influence, and accurate progress geological process
The key of structure response finite element analysis.
Bond-slip properties between pull-out test test reinforcing bar that can be relatively simple and concrete, but can not accurately survey
Measure the Bond-slip of weak separation muscle material.The displacement meter fixture of the test specimen measurement structure of pull-out test is in the prior art
One entirety that can not be split, since weak separation muscle material end needs to be provided with muscle material anchorage, and in traditional displacement meter fixture
Heart bore dia is less than muscle material anchorage diameter, and the fixation that muscle material anchorage carries out fixture can not be passed through by causing displacement meter fixture, therefore
Existing test specimen measurement structure is not suitable for the two-way tension adhesion test of weak separation muscle material very much.
Utility model content
The purpose of this utility model is to provide a kind of test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material,
Suitable for the two-way tension adhesion test of weak separation muscle material, convenient for displacement meter is fixed, and measurement is more accurate.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material, including test specimen 2, displacement meter 7 and be used for
The displacement meter fixture 6 of fixed displacement meter 7, the test specimen 2 include concrete test block 201, muscle material 202, are fixed on 202 one end of muscle material
The first muscle material anchorage 203 and be fixed on the second muscle material anchorage 204 of 202 other end of muscle material, muscle material 202 runs through concrete test block
It 201 and is bonded with concrete test block 201, the displacement meter 7 is multiple and arranges along 202 length direction of muscle material, is located at described
On two surfaces that concrete test block 201 is passed through by muscle material 202, the displacement meter fixture 6 is detachable structure.
The displacement meter 7 is four, and two of them displacement meter 7 is located at what the concrete test block 201 was passed through by muscle material 202
On one surface, other two displacement meter 7 is located on another surface that the concrete test block 201 is passed through by muscle material 202, position
Two displacement meters 7 in the same side are fixed by a displacement meter fixture 6.
The displacement meter fixture 6 is by first clamping plate 61 and second clamping plate 62 along the direction splicing perpendicular to the muscle material 202
Form, the middle part of 62 stitching portion of first clamping plate 61 and second clamping plate be equipped with the central through hole 63 passed through for the muscle material 202 and with
The corresponding side through hole 64 in 7 position of displacement meter passes through the side through hole 64 close to 7 inner end of displacement meter of third supporting element 41
Abutted afterwards with the third supporting element 41, close to the 4th supporting element 42 7 inner end of displacement meter pass through the side through hole 64 after with institute
State the 4th supporting element 42 abutting.
It is equipped on the side of the first clamping plate 61 and second clamping plate 62 for fixing first clamping plate 61 and second clamping plate
62 fixation hole 65 is additionally provided with fastener hole 66 for fastening the muscle material 202, the displacement on 61 side of first clamping plate
The fastener hole 67 of meter 7.
The first muscle material anchorage 203 and the second muscle material anchorage 204 by steel bushing and are filled in the steel bushing
High-strength grout composition.
Compared with prior art, the beneficial effects of the utility model are specific as follows:
(1) structure of the utility model test specimen measurement structure is relatively easy, convenient to carry out；Displacement meter fixture 6 is detachable
Structure is spliced by first clamping plate 61 and second clamping plate 62, convenient for displacement meter 7 is fixedly mounted, solves traditional cementi sliding
In performance test, 6 bring of monoblock type displacement meter fixture trouble.
(2) it is equipped on the first clamping plate 61 of the utility model test specimen measurement structure and the side of second clamping plate 62 for solid
Determine the fixation hole 65 of first clamping plate 61 and second clamping plate 62, fixation hole 65 is convenient for consolidating first clamping plate 61 and second clamping plate 62
It is fixed；The fastening of the fastener hole 66, the displacement meter 7 for fastening the muscle material 202 is additionally provided on 61 side of first clamping plate
Hole 67, fastener hole 66 can be such that displacement meter fixture 6 is firmly secured on muscle material 202, and fastener hole 67 can make displacement meter 7 firm
Ground is fixed on displacement meter fixture 6, and guarantee test is gone on smoothly.
(3) the utility model test specimen measurement structure can accurately measure the cunning between concrete test block 201 and muscle material 202
It moves, reduces influence of the gap of other factors generation to sliding between concrete test block 201 and muscle material 202, ensure that test
Accuracy.
(4) the first muscle material anchorage 203, the second muscle material anchorage 204 of the utility model test specimen measurement structure are weak rigid convenient for making
Degree muscle material 202 is in tension, and the first muscle material anchorage 203, the second muscle material 204 intensity of anchorage are larger, can pass through first
Muscle material anchorage 203, the second muscle material anchorage 204 apply the active force for deviating from weak separation muscle material 202 to weak separation muscle material 202, are convenient for
Realize the two-way tension adhesion test of weak separation muscle material.
Detailed description of the invention
Fig. 1 is that the utility model test specimen measurement structure applies the main view in two-way tension adhesion test device；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the perspective view of the first supporting element 31；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the top view of the first outer stationary plates 311 in Fig. 3；
Fig. 6 is the perspective view of third supporting element 41；
Fig. 7 is the top view of Fig. 6；
Fig. 8 is the top view of third outer stationary plates 411 in Fig. 6；
Fig. 9 is the top view of the first inserted sheet 44 in Fig. 1；
Figure 10 is the main view of firm banking 5；
Figure 11 be Figure 10 in along A-A to sectional view；
Figure 12 is the main view of the first fixed plate 501 in Figure 10；
Figure 13 is the top view of displacement meter fixture 6；
Figure 14 is the main view of first clamping plate 61 in Figure 13；
Figure 15 is the rearview of second clamping plate 62 in Figure 13；
Figure 16 is the structural schematic diagram of test specimen 2；
Figure 17 is the structural schematic diagram that test specimen 2 does not remove PVC casing 205.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.It should be clear that this specification attached drawing is drawn
Structure, ratio, size for showing etc., only to cooperate the revealed content of specification, for those skilled in the art's understanding
With reading, enforceable qualifications are not intended to limit the utility model, therefore do not have technical essential meaning, any structure
Modification, the change of proportionate relationship or the adjustment of size, do not influencing the effect of the utility model can be generated and can reach
Purpose under, should all still fall in the range of the revealed technology contents of the utility model can cover.Meanwhile institute in this specification
Such as "upper" of reference, "lower", "left", "right", " centre " and " one " term, be merely convenient to the clear of narration, Er Feiyong
To limit the enforceable range of the utility model, relativeness is altered or modified, under the content of no substantial changes in technology, when
Also it is considered as the enforceable scope of the utility model.
As shown in Fig. 1 to Figure 17, the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material, including test specimen 2, position
Move meter 7 and based on fixed displacement 7 displacement meter fixture 6, the test specimen 2 include concrete test block 201, muscle material 202, be fixed on
The first muscle material anchorage 203 of 202 one end of muscle material and the second muscle material anchorage 204 for being fixed on 202 other end of muscle material, muscle material 202 passes through
It wears concrete test block 201 and is bonded with concrete test block 201, the displacement meter 7 is multiple and along 202 length direction cloth of muscle material
It sets, on two surfaces passed through positioned at the concrete test block 201 by muscle material 202, the displacement meter fixture 6 is detachable knot
Structure.
The displacement meter 7 is four, and two of them displacement meter 7 is located at what the concrete test block 201 was passed through by muscle material 202
On one surface, other two displacement meter 7 is located on another surface that the concrete test block 201 is passed through by muscle material 202, position
Two displacement meters 7 in the same side are fixed by a displacement meter fixture 6.
The displacement meter fixture 6 is by first clamping plate 61 and second clamping plate 62 along the direction splicing perpendicular to the muscle material 202
Form, the middle part of 62 stitching portion of first clamping plate 61 and second clamping plate be equipped with the central through hole 63 passed through for the muscle material 202 and with
The corresponding side through hole 64 in 7 position of displacement meter passes through the side through hole 64 close to 7 inner end of displacement meter of third supporting element 41
Abutted afterwards with the third supporting element 41, close to the 4th supporting element 42 7 inner end of displacement meter pass through the side through hole 64 after with institute
State the 4th supporting element 42 abutting.
It is equipped on the side of the first clamping plate 61 and second clamping plate 62 for fixing first clamping plate 61 and second clamping plate
62 fixation hole 65 is additionally provided with fastener hole 66 for fastening the muscle material 202, the displacement on 61 side of first clamping plate
The fastener hole 67 of meter 7.
The first muscle material anchorage 203 and the second muscle material anchorage 204 by steel bushing and are filled in the steel bushing
High-strength grout composition.
The test specimen measurement structure of the utility model is constituted with double action device 1, test specimen 2, reaction frame 3, loading frame 4
The two-way tension adhesion test device of weak separation muscle material.The double action device 1 can drive loading frame 4 right by conversion head 101
Concrete test block 201 applies the bi-directional force along 202 length direction of muscle material, when the loading frame 4 is to concrete test block 201
When applying along the active force of 202 length direction of muscle material, the reaction frame 3 applies opposition to muscle material 202.
The reaction frame 3 includes that the first supporting element 31, the second supporting element 32 and multiple struts 33, strut 33 can use
Intensity is high, toughness is preferable and lower-cost screw rod makes.One end of strut 33 is fixedly connected with the first supporting element 31, strut
33 other end is fixedly connected with the second supporting element 32；The concrete test block 201 is located at the first supporting element 31, the second supporting element
Between 32, the first muscle material anchorage 203 is located in the outside of the first supporting element 31, and the second muscle material anchorage 204 is located at the
The outside of two supporting elements 32.
First supporting element 31 is made of the first outer stationary plates 311 and the superposition of the first internal fixation plate 312, the second supporting element
32 by the second outer stationary plates 321 and the second internal fixation plate 322 superposition form, the muscle material 202 close to the first supporting element 31 one
End sequentially passes through the first internal fixation plate 312, the first outer stationary plates 311 and makes the first muscle material anchorage 203 and the first outer stationary plates 311
It abuts, is sequentially passed through close to the other end of the second supporting element 32 fixed outside second internal fixation plate 322, second of the second supporting element 32
Plate 321 and abut the second muscle material anchorage 204 with the second outer stationary plates 321.
The first opening 313 is equipped in the middle part of first outer stationary plates 311, the inner end of first opening 313 is located at first
The center of outer stationary plates 311；The second opening is equipped in the middle part of first internal fixation plate 312, the inner end of second opening is located at
The center of first internal fixation plate 312, the opening direction that first opening 313 is open with described second is on the contrary, the first opening 313
The position of inner end is corresponding with the position of the second open inner ends, and the first 313 inner ends of opening and the second open inner ends are constituted for institute
State the first passage 314 that 202 one end of muscle material passes through, the internal diameter of the first passage 314 is greater than the diameter of the muscle material 202 and small
In the outer diameter of the first muscle material anchorage 203；It is equipped with third in the middle part of second outer stationary plates 321 to be open, the third opening
Inner end be located at the centers of the second outer stationary plates 321；It is equipped with the 4th in the middle part of second internal fixation plate 322 to be open, the described 4th
The inner end of opening is located at the center of the second internal fixation plate 322, the opening direction of the third opening and the 4th opening on the contrary,
The position of third open inner ends is corresponding with the position of the 4th open inner ends, and third open inner ends are constituted with the 4th open inner ends
For the second channel that 202 other end of muscle material passes through, the internal diameter of the second channel is greater than the diameter of the muscle material 202 and small
In the outer diameter of the second muscle material anchorage 204.
The loading frame 4 includes third supporting element 41, the 4th supporting element 42 and multiple pull rods 43, and pull rod 43 can use
Intensity is high, toughness is preferable and lower-cost screw rod makes.The concrete test block 201 be located at the third supporting element 41,
It is clamped between 4th supporting element 42 and by third supporting element 41, the 4th supporting element 42.The third supporting element 41, the 4th supporting element
42 are respectively positioned between first supporting element 31, the second supporting element 32 and are each attached to the pull rod 43 close to concrete examination
One end of block 201.The third supporting element 41 is less than first support along the length of 201 length direction of concrete test block
Part 31, the second supporting element 32 are along the length of 201 length direction of concrete test block, and the third supporting element 41 is along the coagulation
It is wide along the concrete test block 201 that the width of native 201 width direction of test block is greater than first supporting element 31, the second supporting element 32
Spend the width in direction；4th supporting element 42 is less than described first along the length of 201 length direction of concrete test block
Support member 31, the second supporting element 32 are along the length of 201 length direction of concrete test block, and the 4th supporting element 42 is along described mixed
The width of solidifying soil 201 width direction of test block is greater than first supporting element 31, the second supporting element 32 along the concrete test block 201
The width of width direction, it is comprehensive for, the width of loading frame 4 is greater than the width of reaction frame 3, and the length of loading frame 4 is small
In the length of reaction frame 3, therefore on loading direction, loading frame 4 not will receive other factors interference, ensure that test
Accuracy.Spacing between third supporting element 41 and the 4th supporting element 42 is adjustable, therefore is adapted to the concrete of more size
Test specimen 201 carries out bond-slip properties research, applied widely.
The third supporting element 41 is made of third outer stationary plates 411 and the superposition of third internal fixation plate 412, the 4th supporting element
42 are made of the 4th outer stationary plates 421 and the superposition of the 4th internal fixation plate 422, and the muscle material 202 is close to the one of third supporting element 41
End sequentially passes through third internal fixation plate 412, third outer stationary plates 411, sequentially passes through the close to the other end of the 4th supporting element 42
The 4th internal fixation plate 422, the 4th outer stationary plates 421 of four supporting elements 42.
The 5th opening 413 is equipped in the middle part of the third outer stationary plates 411, the inner end of the 5th opening 413 is located at third
The center of outer stationary plates 411；The 6th opening is equipped in the middle part of the third internal fixation plate 412, the inner end of the 6th opening is located at
The center of third internal fixation plate 412, the opening direction that the 5th opening 413 is open with the described 6th is on the contrary, the 5th opening 413
The position of inner end is corresponding with the position of the 6th open inner ends, and the 5th 413 inner ends of opening and the 6th open inner ends are constituted for institute
State the third channel 414 that 202 one end of muscle material passes through, the internal diameter of the third channel 414 is greater than the diameter of the muscle material 202 and small
In the outer diameter of the first muscle material anchorage 203；The 7th opening, the 7th opening are equipped in the middle part of 4th outer stationary plates 421
Inner end be located at the centers of the 4th outer stationary plates 421；It is equipped with the 8th in the middle part of 4th internal fixation plate 422 to be open, the described 8th
The inner end of opening is located at the center of the 4th internal fixation plate 422, the opening direction of the 7th opening and the 8th opening on the contrary,
The position of 7th open inner ends is corresponding with the position of the 8th open inner ends, and the 7th open inner ends are constituted with the 8th open inner ends
For the fourth lane that 202 other end of muscle material passes through, the internal diameter of the fourth lane is greater than the diameter of the muscle material 202 and small
In the outer diameter of the second muscle material anchorage 204.
Compatible first inserted sheet 44 of the 6th opening shape, first inserted sheet 44 are arranged in 6th opening
It is abutted with 201 surface of concrete test block and 44 inner end of the first inserted sheet and the 6th open inner ends is enclosed for the muscle material 202
The through-hole that one end passes through；Compatible second inserted sheet 45 of the 8th opening shape is arranged in 8th opening, described the
Two inserted sheets 45 are abutted with 201 surface of concrete test block and 45 inner end of the second inserted sheet and the 8th open inner ends enclose described in confession
The through-hole that 202 other end of muscle material passes through.First inserted sheet 44 and the second inserted sheet 45 can be made of steel disc, can be to avoid the 6th
The corner angle and 201 contact site of concrete test block of opening and the 8th opening generate concentrated stress, ensure that the accuracy of test.
The firm banking 5 that the reaction frame 3 passes through the close second muscle material anchorage 204 is fixed, the fixation
Pedestal 5 is made of the first fixed plate 501, the second fixed plate 502 and multiple webs 503, and 503 uniform intervals of web are installed in
Between first fixed plate 501 and the second fixed plate 502, ribbed stiffener 504 is equipped between adjacent web 503；Described first is fixed
The through-hole 506 passed through for the second muscle material anchorage 204 is equipped in the middle part of plate 501.
During the two-way tension of concrete test block 201, third supporting element 41, the 4th supporting element 42 are tried with concrete
Relative displacement between block 201 can be ignored, and therefore, displacement meter 7 directly connects with third supporting element 41, the 4th supporting element 42
Touching, this mode are the common sense of the art, and details are not described herein.
The assemble method of the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material, comprising the following steps:
(1) make test specimen 2: firstly, making wooden model according to the size of concrete test block 201, two sides of wooden model respectively bore one
The position in hole, hole is determined by thickness of concrete cover；Then two sections of PVC casings 205 are inserted into above-mentioned hole, two sections of PVC
The spacing of 205 inner end of casing is exactly the bond length of concrete 201 Yu muscle material 202；Then by muscle material 202 through two sections of PVC sets
Pipe 205, adjusts 202 position of muscle material, guarantees between PVC casing 205 and wooden model, stress between muscle material 202 and PVC casing 205
When position without the changing of the relative positions；Then 205 nozzle of PVC casing in wooden model is sealed, concrete enters PVC set when preventing from pouring
The bond length between muscle material 202 and concrete test block 201 is caused to increase in pipe 205；Pouring for concrete is finally carried out, is poured
Before building, release agent is coated in the outer surface of 201 part of wooden model inner surface and the 205 Transducers Embedded in Concrete test block of PVC casing, and demoulding is simultaneously extracted
PVC casing 205；Muscle material anchorage 203 is finally made, muscle material is vertically inserted into steel bushing, high-strength grout is poured into steel bushing,
Maintenance molding forms entirety with muscle material；
(2) displacement meter fixture 6 and displacement meter 7 are installed, the first clamping plate 61 of displacement meter fixture 6 and second clamping plate 62 is symmetrical
It is clipped on muscle material 202, muscle material 202 is made to pass through central through hole 63, screw in fixation hole 65 using bolt, make first clamping plate 61 and second
Clamping plate 62 is fixed together；Then it is inserted into displacement meter 7 in side through hole 64, screw in fastener hole 67 using bolt and compresses displacement meter
7, fastener hole 66 is screwed in using bolt until displacement meter fixture 6 is firmly secured on muscle material 202.
The utility model test specimen measurement structure constitutes weak with double action device 1, test specimen 2, reaction frame 3, loading frame 4
The two-way tension adhesion test device of rigidity muscle material, the test method of this experimental rig, comprising the following steps:
(1) test specimen 2 is made: identical as 2 production method of test specimen of the utility model test specimen measurement structure.
(2) firm banking 5 is fixed on (not shown) on the portal frame lower beam of double action device 1, firm banking 5
It is uniformly distributed in second fixed plate 502 there are four fixation hole 505, the position of fixation hole 505 depends on portal frame lower beam hole
Position, pass through fixation hole 505 and portal frame lower beam hole using outer-hexagonal bolt and firm banking 5 be fixed under portal frame
On crossbeam.
(3) it assembles reaction frame 3: the first outer stationary plates 311 and the first internal fixation plate 312 is stacked be assembled into first in opposite directions
Supporting element 31(is as shown in Figure 3), during assembled first supporting element 31, make test specimen by the first opening 313 and the second opening
The 2 part muscle material 202 close to 1 side of double action device passes through the inner end of the first opening 313 and the second opening；It will be fixed outside second
Plate 321 and the second internal fixation plate 322 stack be assembled into the second supporting element 32 in opposite directions, during assembled second supporting element 32, according to
Test specimen 2 is set to pass through third opening and the 4th far from the part muscle material 202 of 1 side of double action device by third opening and the 4th opening
The inner end of opening；Four struts 33 are each passed through the first outer stationary plates 311, the first internal fixation plate 312, the second outer stationary plates
321 and the second fixation hole on internal fixation plate 322, then adjust the first outer stationary plates 311, outside the first internal fixation plate 312, second
The position of fixed plate 321 and the second internal fixation plate 322, makes to be secured with nuts, and guarantees the first muscle material anchorage 203 and the second muscle material anchor
Tool 204 is abutted with the first outer stationary plates 311, the second outer stationary plates 321 respectively, and muscle material 202 is made to be in tension.
(4) reaction frame 3 is fixed in the first fixed plate 501, and the second muscle material anchorage 204 is made to pass through the first fixed plate
The through-hole 506 at 501 middle parts.
(5) it assembles loading frame 4: third internal fixation plate 412 being placed on 201 1 surfaces of concrete test block, and is made
Muscle material 202 passes through the inner end of the 6th opening, stacks then according to the opposite direction of the 5th opening 413 and the 6th opening solid outside third
Fixed board 411, third outer stationary plates 411 and third internal fixation plate 412 form third supporting element 41, in assembled 41 mistake of third supporting element
Cheng Zhong, will be in the 6th opening of the first inserted sheet 44 insertion；Same assembled 4th supporting element 42 of method, in assembled third supporting element 42
It in the process, will be in the 8th opening of the second inserted sheet 45 insertion；First inserted sheet 44 and the second inserted sheet 45 can be to avoid the 6th opening and the
The corner angle and 201 contact site of concrete test block of eight openings generate concentrated stress.Four pull rods 43 are each passed through solid outside third
Fixation hole on fixed board 411, third internal fixation plate 412, the 4th outer stationary plates 421 and the 4th internal fixation plate 422 then adjusts
The position of three outer stationary plates 411, third internal fixation plate 412, the 4th outer stationary plates 421 and the 4th internal fixation plate 422, makes in third
Surface corresponding with concrete test block 201 abuts respectively for fixed plate 412, the 4th outer stationary plates 421.
(6) loading frame 4 is fixed on the conversion head 101 of double action device 1.
(7) displacement meter fixture 6 and displacement meter 7 are installed.The first clamping plate 61 of displacement meter fixture 6 and second clamping plate 62 is symmetrical
It is clipped on muscle material 202, muscle material 202 is made to pass through central through hole 63, screw in fixation hole 65 using bolt, make first clamping plate 61 and second
Clamping plate 62 is fixed together；Then it is inserted into displacement meter 7 in side through hole 64, screw in fastener hole 67 using bolt and compresses displacement meter
7, fastener hole 66 is screwed in using bolt until displacement meter fixture 6 is firmly secured on muscle material 202.
(8) start to test, carry out power-Bit andits control load
Loading method is reciprocal biaxial loadings, carries out the unidirectional drawing of same size test specimen before two-way tension adhesion test first
Test is pulled out, the limit cohesive force Pmax in the case of unidirectional drawing between concrete and muscle material is obtained.Two-way tension adhesion test load
Initial stage, differential load was P, and initial load is 0 when every grade of circulation starts using power control load, such as reciprocal for the first time two-way to add
It carries, load P is loaded by initial load 0, be then offloaded to 0, then Opposite side loading is then offloaded to 0, completes primary two-way to-P
Load, every grade of load recycle 1 time；Switch to Bit andits control load when load reaches 0.8Pmax, using Δ s as position when Bit andits control
The differential reciprocal tension and compression load of progress is moved, Δ s is the slip value at the end of power control load, recycles 3 for every grade when Bit andits control loads
It is secondary.
Experimental data processing and analysis are carried out after the test:
(1) calculating of average bond stress τ: τ=P/ π DL, in formula P be double action device to the pulling force of concrete test block or
Pressure, D are muscle material diameter, and L is bond length.
(2) calculating of Relative sliding average value: st=(s1+s2-2sJ1)/2、sb=(s3+s4-2sJ2), in formula, st is position
In the Relative sliding average value that two displacement meters 7 of the concrete test block 201 close to 1 side of double action device measure, s1, s2 difference
For the numerical value that two displacement meters 7 positioned at concrete test block 201 close to 1 side of double action device measure, sJ1For concrete test block
201 close to 1 side of double action device 6 fixed point of displacement meter fixture to the muscle material between the corresponding surface of concrete test block 201
Deflection；Sb is to put down positioned at concrete test block 201 far from the Relative sliding that two displacement meters 7 of 1 side of double action device measure
Mean value, s3, s4 are respectively to be located at the numerical value that concrete test block 201 is measured far from two displacement meters 7 of 1 side of double action device,
sJ26 fixed point of displacement meter fixture for concrete test block 201 far from 1 side of double action device is corresponding to concrete test block 201
Muscle material deflection between surface.
(3) calculating of muscle material deflection: sJ=PL0/ EA, L0 is 6 fixed point of displacement meter fixture to concrete test block 201 in formula
The length of muscle material between corresponding surface, E are muscle material elasticity modulus, and A is the cross-sectional area of muscle material.
(4) bond stress-sliding hysteresis loop is drawn
Using average bond stress as ordinate, Relative sliding average value is that abscissa is drawn under two-way tension load action
Bond stress-sliding curve, the viscous of weak separation muscle material and concrete under two-way tension load action is obtained by analytical calculation
Knot-slip Constitutive Relation.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (5)
1. the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material, it is characterised in that: including test specimen (2), displacement meter
(7) the displacement meter fixture (6) of (7) and based on fixed displacement, the test specimen (2) includes concrete test block (201), muscle material
(202), it is fixed on the first muscle material anchorage (203) of muscle material (202) one end and is fixed on the second muscle material of muscle material (202) other end
Anchorage (204), muscle material (202) are bonded through concrete test block (201) and with concrete test block (201), and the displacement meter (7) is
It is multiple and arranged along muscle material (202) length direction, it is located at the concrete test block (201) passed through by muscle material (202) two
On surface, the displacement meter fixture (6) is detachable structure.
2. the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material according to claim 1, it is characterised in that:
The displacement meter (7) is four, and two of them displacement meter (7) is located at what the concrete test block (201) was passed through by muscle material (202)
On one surface, other two displacement meter (7) is located at another table that the concrete test block (201) is passed through by muscle material (202)
On face, two displacement meters (7) positioned at the same side are fixed by a displacement meter fixture (6).
3. the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material according to claim 2, it is characterised in that:
The displacement meter fixture (6) is spliced by first clamping plate (61) and second clamping plate (62) along the direction perpendicular to the muscle material (202)
It forms, the middle part of first clamping plate (61) and second clamping plate (62) stitching portion is equipped with the central through hole passed through for the muscle material (202)
(63) and side through hole corresponding with the displacement meter (7) position (64), close to displacement meter (7) inner end of third supporting element (41)
It is abutted afterwards with the third supporting element (41) across the side through hole (64), in the displacement meter (7) of the 4th supporting element (42)
End is abutted with the 4th supporting element (42) afterwards across the side through hole (64).
4. the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material according to claim 3, it is characterised in that:
It is equipped on the side of the first clamping plate (61) and second clamping plate (62) for fixing first clamping plate (61) and second clamping plate
(62) fixation hole (65) is additionally provided with the fastener hole for fastening the muscle material (202) on first clamping plate (61) side
(66), the fastener hole (67) of the displacement meter (7).
5. the test specimen measurement structure of the two-way tension adhesion test of weak separation muscle material according to claim 4, it is characterised in that:
The first muscle material anchorage (203) and the second muscle material anchorage (204) by steel bushing and are filled in high-strength in the steel bushing
Grouting material composition.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507866A (en) * | 2018-05-31 | 2018-09-07 | 郑州大学 | The test specimen measurement structure and assemble method of the two-way tension adhesion test of weak separation muscle material |
| CN109975109A (en) * | 2019-04-25 | 2019-07-05 | 华北理工大学 | A kind of the test support of sleeve circumferential direction and displacement meter arrangement apparatus and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507866A (en) * | 2018-05-31 | 2018-09-07 | 郑州大学 | The test specimen measurement structure and assemble method of the two-way tension adhesion test of weak separation muscle material |
| CN108507866B (en) * | 2018-05-31 | 2024-01-26 | 郑州大学 | Test piece measurement structure for weak-rigidity reinforcement bidirectional tension bonding test and assembly method |
| CN109975109A (en) * | 2019-04-25 | 2019-07-05 | 华北理工大学 | A kind of the test support of sleeve circumferential direction and displacement meter arrangement apparatus and method |
| CN109975109B (en) * | 2019-04-25 | 2021-07-13 | 华北理工大学 | Device and method for circumferential support of sleeve and arrangement of displacement meter for test |
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