CN205691417U - A kind of device of tested steel reinforced concrete reinforcement performance - Google Patents
A kind of device of tested steel reinforced concrete reinforcement performance Download PDFInfo
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- CN205691417U CN205691417U CN201620324641.7U CN201620324641U CN205691417U CN 205691417 U CN205691417 U CN 205691417U CN 201620324641 U CN201620324641 U CN 201620324641U CN 205691417 U CN205691417 U CN 205691417U
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- carbon fiber
- specimen sleeve
- concrete
- fiber plate
- grip block
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Abstract
This utility model relates to the device of a kind of tested steel reinforced concrete reinforcement performance, the determinand that this device is suitable for is concrete component, surface of concrete structure external application or embedded carbon fiber plate of slotting, the bottom lengths of carbon fiber plate is beyond the bottom of concrete component, this device includes a specimen sleeve with clamping termination and a grip block, centre bottom specimen sleeve is provided with through hole, during test, concrete component is put inside specimen sleeve fixing, carbon fiber plate is connected through through hole with grip block, clamping termination is connected with lower chuck with the upper grip of universal tensile testing machine respectively with grip block.Compared with prior art, this utility model is merely with specimen sleeve and grip block, and the universal tensile testing machine that laboratory is common, just can accurately show that carbon fiber plate is subject to the load-displacement curve in face of cutting with concrete binding during tension, and it is safe and reliable to obtain test data, provide strong data basis for further evaluation ultimate bearing capacity and ductility.
Description
Technical field
The present invention relates to concrete test technical field, be specifically related to the dress of a kind of tested steel reinforced concrete reinforcement performance
Put.
Background technology
Carbon fibre reinforced composite (Carbon Fiber Reinforced Polymer is called for short CFRP) is widely used in
The reinforcement of all kinds of reinforced concrete structures, to improve the bearing capacity of reinforced concrete member.
Carbon fiber plate carries out gluing by binding agent and load-carrying members, the influence of shear strength carbon fiber reinforcement of adhesive surface
The effect of concrete.Existing specification, for carbon fiber plate, only specifies that its matching tree lipid binding material is just drawing viscous with concrete
The assay method of knotting strength, the mensuration for shearing strength does not does clear stipulaties.And the list that scientific research personnel is carried out for concrete
To tensile shear testing, there is assay device complicated, experimentation cost is high, and carbon fiber plate is difficult to the shortcomings such as axially loaded.Experimental technique
Have much room for improvement and develop.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of simple in construction is provided, is suitable for
Property wide, the device of testing result tested steel reinforced concrete reinforcement performance accurately.
The purpose of the present invention can be achieved through the following technical solutions: the dress of a kind of tested steel reinforced concrete reinforcement performance
Putting, the determinand that this device is suitable for is concrete component, described surface of concrete structure or internal bond carbon fiber plate, institute
Stating the bottom lengths bottom beyond described concrete component of carbon fiber plate, this device includes an examination with clamping termination
Part set and a grip block, the centre bottom described specimen sleeve is provided with through hole, and during test, described concrete component is put in described examination
Part set is internal fixing, and described carbon fiber plate is connected with described grip block, by described clamping termination and grip block through through hole
It is connected with lower chuck with the upper grip of universal tensile testing machine respectively.
Startup universal tensile testing machine applying pulling force, the load-displacement curve of real time record universal tensile testing machine, the most mixed
Solidifying soil is cut and sliding curve with carbon fiber plate bonding interface, i.e. can be obtained by the ultimate shear cutting interface by this curve
The mechanical properties such as bearing capacity, ductility, and ultimate deformation, the assessment for concrete strengthening performance provides data basis.
Described specimen sleeve upper surface is provided with the clamping termination that the upper grip with described universal tensile testing machine matches, institute
The clamping termination stated passes specimen sleeve upper surface, is fixed with specimen sleeve by two nuts, and two described nuts are respectively
It is arranged on above and below upper surface.
Described specimen sleeve upper surface is additionally provided with at least 4 equally distributed fastening bolts, and described fastening bolt passes institute
Stating specimen sleeve upper surface, be fixed with specimen sleeve by two nuts, described nut is separately positioned on the top of upper surface
And lower section, during fixing concrete component, the lower end of described fastening bolt props up described concrete component.
Described fastening bolt is more than described clamping termination at the internal external part of specimen sleeve in the internal external part length of specimen sleeve
Length.This guarantees clamping termination will not contact with determinand, thus do not interfere with the accuracy of test result.
The middle part of the lower surface of described specimen sleeve is provided with shrinkage pool.
Described grip block includes that the aluminium sheet that two pieces of identical surfaces process through delineation, described aluminium sheet are provided with at least
Two bolts hole.Surface of aluminum plate cut is made up of two groups of orthogonal cuts, and often in group, cut spacing is not less than 2mm.This design is
In order to ensure frictional force, prevent from sliding during test, prevent " can't clip " phenomenon, because test bonding interface shearing-resistance ability
Time, the load applied is very big, it is necessary to hold more than the shearing resistance at test interface by processing the shear-carrying capacity ensureing other interfaces
Load power, it is ensured that data reliable.
Described determinand includes concrete component and cementing in surface of concrete structure or inside by adhesive
Carbon fiber plate, the lower end of described carbon fiber plate is longer than the lower end of described concrete component.
During test, described concrete component is positioned over the inside of described specimen sleeve, and described carbon fiber plate is from described
Through hole in stretch out and keep carbon fiber sheet to overlap with the extended line of described clamping termination, and by grip bolt and described folder
Hold plate to fix, then regulate described fastening bolt length in specimen sleeve, make the upper of fastening bolt and described concrete component
Surface compresses.
Compared with prior art, beneficial effects of the present invention is embodied in following several respects:
(1) examination of a kind of new detection carbon fiber plate and concrete binding interface shearing-resistance ultimate strength with ductility is proposed
Experiment device, has filled up the blank of concrete strengthening performance test technical field.
(2) by the assay device of relatively simple economy, merely with steel bushing and grip block, and common omnipotent of laboratory
Cupping machine, just can accurately show that carbon fiber plate is bent by the load-displacement cutting face with concrete binding during tension
Line, provides strong data basis for further evaluation ultimate bearing capacity and ductility.
(3) overcome existing simple shear test and be difficult to make the shortcoming of carbon fiber plate uniaxial force, obtain test data more
Safe and reliable, and there is preferable cost performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of specimen sleeve of the present invention；
Fig. 2 is the structural representation of grip block of the present invention；
Fig. 3 is the front view of a kind of determinand；
Fig. 4 is the top view of determinand shown in Fig. 3；
Fig. 5 is determinand structural representation when putting into apparatus of the present invention；
Fig. 6 is the determinand schematic diagram when universal tensile testing machine is tested；
Fig. 7 is the front view of another kind of determinand；
Fig. 8 is the top view of determinand shown in Fig. 7.
Wherein, 100 is specimen sleeve, and 110 is clamping termination, and 111 is clamping termination nut, and 120 is fastening bolt, and 121 are
Fastening bolt nut, 130 is through hole, and 140 is carbon fiber plate, and 141 is binding agent, and 150 is concrete component, and 160 is clamping
Bolt, 170 is aluminium sheet, and 180 is indentation, and 190 is bolt hole, and 201 is upper grip, and 202 is lower chuck.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following enforcement
Example.
Embodiment 1
The device of a kind of tested steel reinforced concrete reinforcement performance, its structure is as it is shown in figure 1, this device includes one with folder
Holding the specimen sleeve 100 of termination 110 and a grip block, the centre bottom specimen sleeve 100 is provided with through hole 130, and clamping termination 110 is worn
Cross specimen sleeve 100 upper surface, be fixed with specimen sleeve 100 by two clamping termination nuts 111, clamping termination nut 111
Being separately positioned on above and below specimen sleeve 100 upper surface, clamping termination 110 can be clamped by regulation as the case may be
Head bolts 111 is freely rotatable along its axis direction, to adapt to different types of carbon fiber plate-concrete sample.
Specimen sleeve 100 upper surface is additionally provided with at least 4 equally distributed fastening bolts 120, and fastening bolt 120 is through test specimen
Overlapping 100 upper surfaces, be fixed with specimen sleeve 100 by two fastening bolt nuts 121, fastening bolt nut 121 sets respectively
Putting above and below specimen sleeve 100 upper surface, fastening bolt 120 is not less than folder in the internal external part length of specimen sleeve 100
Hold the termination 110 length at the internal external part of specimen sleeve 100, and can increase by regulation two ends fastening nut 121 or reduce
Fastening bolt 120 is in the internal external part length of steel bushing 100, to fasten concrete sample.
This device also includes a grip block, and this grip block includes that there is the aluminium sheet 170 of indentation 180 on two pieces of identical surfaces,
Two groups of orthogonal cut spacing of indentation 180 are 2mm, are provided with two bolts hole, the structure of this grip block such as Fig. 2 on aluminium sheet 170
Shown in.
During test, determinand is put in said apparatus, the structure of this determinand as shown in Figure 3 and Figure 4, this determinand bag
Including concrete component 150 and a carbon fiber plate 140, carbon fiber plate 140 stands on the vertical of concrete component 150 surface
Inside grooves, and carry out cementing by binding agent 141；The top of carbon fiber plate 140 is neat with the top of concrete component 150
Flat, the bottom of carbon fiber plate 140 is beyond the bottom of concrete component 150.
During test, first concrete component 150 is placed on specimen sleeve 100 internal, and by carbon fiber plate from through hole 130
Passing, and keep the axis of carbon fiber plate 140 and the dead in line of clamping termination 110, regulation fastening bolt 120 is at specimen sleeve
Length within 100, it is ensured that the bottom of each fastening bolt 120 all props up the upper end of concrete component 150.With two blocks of aluminium sheets
The bottom of carbon fiber plate 140 is clamped by 170, and fastens two blocks of aluminium sheets 170, finally regulation clamping termination with grip bolt 160
110 sandwich termination nuts, rotate clamping termination 110 and make its plane be parallel to carbon fiber plate 140, concrete structure such as Fig. 5
Shown in.
The device placing determinand is connected with universal tensile testing machine, wherein clamping termination and universal tensile testing machine
Upper grip 201 connect, grip block is connected with the lower chuck 202 of universal tensile testing machine, final connects as shown in Figure 6, ten thousand
Can erecting device carry out tension test on cupping machine, draw test data, assess concrete strengthening performance.
Embodiment 2
Use device same as in Example 1 and method of testing, but use the determinand of multi-form, treating of the present embodiment
Surveying the structure of thing as shown in Figure 7 and Figure 8, this determinand includes concrete component 150 and a carbon fiber plate 140, carbon fiber
Sheet material 140 lies low in the surface of concrete component 150 side, and carries out cementing by binding agent 141；Carbon fiber plate 140
Top flushes with the top of concrete component 150, and the bottom of carbon fiber plate 140 is beyond the bottom of concrete component 150.
Claims (6)
1. a device for tested steel reinforced concrete reinforcement performance, the determinand that this device is suitable for is concrete component, described
Surface of concrete structure external application or embedded carbon fiber plate of slotting, the bottom lengths of described carbon fiber plate exceeds described concrete
The bottom of component, it is characterised in that this device includes a specimen sleeve with clamping termination and a grip block, described test specimen
Centre bottom set is provided with through hole, and during test, described concrete component is put inside described specimen sleeve fixing, described carbon fiber
Sheet material is connected with described grip block through through hole, by described clamping termination and grip block respectively with the upper folder of universal tensile testing machine
Head is connected with lower chuck.
The device of a kind of tested steel reinforced concrete reinforcement performance the most according to claim 1, it is characterised in that described examination
Part set upper surface is provided with the clamping termination that the upper grip with described universal tensile testing machine matches, and described clamping termination passes
Specimen sleeve upper surface, is fixed with specimen sleeve by two nuts, and two described nuts are separately positioned on the upper of upper surface
Side and lower section.
The device of a kind of tested steel reinforced concrete reinforcement performance the most according to claim 2, it is characterised in that described examination
Part set upper surface is additionally provided with at least 4 equally distributed fastening bolts, and described fastening bolt passes described specimen sleeve upper surface, logical
Crossing two nuts to be fixed with specimen sleeve, described nut is separately positioned on above and below upper surface, fixing concrete
During component, the lower end of described fastening bolt props up described concrete component.
The device of a kind of tested steel reinforced concrete reinforcement performance the most according to claim 3, it is characterised in that described fastening
Bolt is more than the described clamping termination length at the internal external part of specimen sleeve in the internal external part length of specimen sleeve.
The device of a kind of tested steel reinforced concrete reinforcement performance the most according to claim 1, it is characterised in that described folder
Holding the aluminium sheet that plate includes that two pieces of identical surfaces process through delineation, described aluminium sheet is provided with at least two bolt hole.
6. according to the device of a kind of tested steel reinforced concrete reinforcement performance described in claim 3, it is characterised in that test
Time, described concrete component is positioned over the inside of described specimen sleeve, and described carbon fiber plate stretches out from described through hole
And keep carbon fiber sheet to overlap with the extended line of described clamping termination, and fixed with described grip block by grip bolt, so
Rear regulation described fastening bolt length in specimen sleeve, makes fastening bolt compress with the upper surface of described concrete component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620324641.7U CN205691417U (en) | 2016-04-18 | 2016-04-18 | A kind of device of tested steel reinforced concrete reinforcement performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620324641.7U CN205691417U (en) | 2016-04-18 | 2016-04-18 | A kind of device of tested steel reinforced concrete reinforcement performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205691417U true CN205691417U (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620324641.7U Expired - Fee Related CN205691417U (en) | 2016-04-18 | 2016-04-18 | A kind of device of tested steel reinforced concrete reinforcement performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205691417U (en) |
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2016
- 2016-04-18 CN CN201620324641.7U patent/CN205691417U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20190418 |
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| CF01 | Termination of patent right due to non-payment of annual fee |