CN207092384U - Improve the structure of multiple material muscle anchoring property - Google Patents
Improve the structure of multiple material muscle anchoring property Download PDFInfo
- Publication number
- CN207092384U CN207092384U CN201720616026.8U CN201720616026U CN207092384U CN 207092384 U CN207092384 U CN 207092384U CN 201720616026 U CN201720616026 U CN 201720616026U CN 207092384 U CN207092384 U CN 207092384U
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- China
- Prior art keywords
- multiple material
- material muscle
- muscle
- additional rib
- extruding
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- 239000000463 material Substances 0.000 title claims abstract description 120
- 210000003205 muscle Anatomy 0.000 title claims abstract description 103
- 238000004873 anchoring Methods 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 11
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 13
- 238000012360 testing method Methods 0.000 description 15
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 10
- 210000002435 tendon Anatomy 0.000 description 9
- 230000006378 damage Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 238000007586 pull-out test Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model proposes a kind of structure for improving multiple material muscle anchoring property, and it includes multiple material muscle, and several additional ribs are cased with multiple material muscle, and additional rib produces laterally homogeneous compression by external force extruding and forms integrative-structure with multiple material muscle, and additional rib is short metal pipe.After the utility model, multiple material muscle anchoring bearing capacity is doubled and redoubled, multiple material muscle caused by extruding loss of strength rate below 5%；The utility model is applied widely, is applicable not only to multiple material muscle newly-built structure, is also applied for multiple material muscle and reinforces existing structure；Simple and easy to do, additional rib flexible arrangement, extrusion process is not required to large scale equipment, and curing cycle is not needed after the completion of extruding, and the multiple material muscle after the completion of extruding can come into operation immediately.
Description
Technical field
The present invention relates to civil engineering, and in particular to a kind of structure for improving multiple material muscle anchoring property.
Background technology
Fibre reinforced composites have the advantages that high-strength light, corrosion-resistant, the application prospect in current architectural engineering
It is very wide.Fiber-reinforced composite material rib, referred to as material muscle again, as a kind of product form of fibre reinforced composites,
Axial tensile-strength is very high, and horizontal shearing resistance and compression strength are than relatively low so that the anchoring problem of multiple material muscle fails always
Preferably solved.In order to anchor multiple material muscle, it usually needs set longer anchorage length, Chang Wufa meets this in engineering
Condition.Even if with enough anchorage lengths, it is also possible to because the generation of end shearing crack causes multiple material muscle to be peeled off, especially
Slippage increase under Fatigue Load.At present, in the multiple material muscle anchoring of prestressing force, the bond type anchorage and folder of generally use
Though chip anchorage has Patents but application is seldom.In this two classes anchorage, the resin colloid of Transfer of Shear in bond type anchorage
Easy to aging and long-term creep is big, and the enforcement difficulty of strand tapered anchorage is big and easily brings larger multiple material muscle to damage, in addition two kinds of anchors
It is generally all larger to have size, application limitation is larger, and anchoring property is bad and is not easy to implement.
The content of the invention
Goal of the invention：The present invention provides a kind of structure and extrusion process for improving multiple material muscle anchoring property, solves multiple
Material muscle multiple material muscle easy damaged when anchoring, the problem of enforcement difficulty is big, and anchoring property is bad.
Technical scheme：The present invention provides a kind of structure for improving multiple material muscle anchoring property, including multiple material muscle, is covered on multiple material muscle
There are several additional ribs, the additional rib forms integrative-structure, additional rib by extruding the laterally homogeneous compression of generation with multiple material muscle
For short metal pipe.
Wherein, additional rib is made up of aluminium alloy or bronze, can also do internal layer high rigidity metal using soft metal and do
Outer layer and be made, the additional rib is according to equidistant regular or not equidistant rule setting on multiple material muscle.The additional rib
Quantity be 2~4.The multiple material muscle is twisted steel, and the depth of thread is 0.3~0.5mm.Described stub length is multiple material
1~4 times of muscle diameter, internal diameter is more than multiple material muscle external diameter and 0~1mm of difference before additional rib extruding.
The extrusion process of the structure of the present invention for improving multiple material muscle anchoring property, comprises the following steps：
(A) additional rib positions：The position of additional rib to be installed is indicated at multiple material muscle, additional rib is enclosed on multiple material muscle
And fixed；
(B) extrusion forming：Stages cycle extruding is carried out to additional rib fixed in the step (A) using extrusion equipment,
During every section of extruding, the anglec of rotation gradually extrudes several times, and the cycle extrusion that passes through make it that extruding is uniform three times.
Wherein, during the step (B) extruding short tube end reserve it is a bit of after extruded, controlled in extrusion process additional
The compression ratio of rib wall thickness is 30%-40%, and short tube anchoring effect is improved in multiple material muscle surface smear interfacial agents before extruding.
The present invention is easy to extrusion forming using metal material pipe and has the characteristics of some strength, by several metal materials
Short tube extruding is bonded on the outside of multiple material muscle, forms the additional rib of multiple material muscle, extra anchor force is provided for multiple material muscle.Pass through regulation
Short tube material, wall thickness, length and spacing, and extruding force size, reach the effect that anchoring bearing capacity is doubled and redoubled, and can pass through
Uniform extrusion process ensure multiple material muscle caused by extruding loss of strength below 5%.
Beneficial effect：After the present invention, multiple material muscle anchoring bearing capacity is doubled and redoubled, multiple material muscle intensity caused by extruding
Loss late is below 5%；The present invention is applied widely, is applicable not only to multiple material muscle newly-built structure, is also applied for multiple material muscle and reinforces
Existing structure；Simple and easy to do, additional rib flexible arrangement, extrusion process is not required to large scale equipment, and week need not be conserved after the completion of extruding
Phase, the multiple material muscle after the completion of extruding can come into operation immediately.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the extrusion process figure of the present invention；
Fig. 3 is the schematic diagram using the present invention in newly-built concrete structure；
Fig. 4 is the schematic diagram using the present invention in existing concrete structure.
Embodiment
Below in conjunction with the accompanying drawings, technical scheme is described in detail.
As shown in figure 1, a kind of structure for improving multiple material muscle anchoring property, including multiple material muscle 1, multiple material muscle is twisted steel, and
The depth of thread is 0.3~0.5mm, and multiple additional ribs 2 are cased with multiple material muscle, and additional rib 2 extrudes laterally homogeneous compression by external force,
Plastic deformation is produced, forms integrative-structure with multiple material muscle 1, additional rib 2 is short metal pipe.
Wherein, additional rib can select aluminium alloy or bronze material to be made, and can also do interior floor height from soft metal
Hard metal does outer layer and is made, and additional rib can be attached according to equidistant regular or not equidistant rule setting on multiple material muscle
The quantity of ribbing can set several according to the length of multiple material muscle, and the quantity of additional rib is preferably 2~4, additional rib length
For 1~4 times of multiple material muscle diameter, internal diameter is more than multiple material muscle external diameter and 0~1mm of difference before additional rib extruding.
As shown in Fig. 2 the pressing method that the structure for improving multiple material muscle anchoring property uses, comprises the following steps：Additional rib
Positioning, the position of additional rib to be installed is indicated at multiple material muscle, additional rib is enclosed on multiple material muscle and fixed；It is squeezed into
Type, can the additional rib end in multiple material muscle surface smear interfacial agents, extruding before extrusion in order to improve additional rib anchoring effect
It is reserved it is a bit of after extruded again, reserved length can be adjusted according to the length of additional rib, typically reserved 2mm, extruding
The compression ratio of process control additional rib wall thickness is 30%-40%, is squeezed using hydraulic tongs, extruder or hydraulic drive pressurizing unit etc.
Pressure equipment is extruded fixed additional rib, and extrusion process is that circulating section extrudes, every section when extruding, the anglec of rotation several times
Gradually it is pressed into place so that extruding is uniform.Wherein additional rib can be by the way of single gauge or several specifications be combined.Use
During this method extrusion structure, multiple material rigidity of soft tissues degree loss late caused by extruding is within 5%, the multiple material muscle anchoring of raising of the invention
The structure of energy both can be used in newly-built concrete structure, can be used in existing concrete structure, can act as enhancing
The effect of anchoring property.As shown in figure 3, in newly-built concrete structure, when being furnished with fiber-reinforced composite material rib in structure,
To improve the anchoring property of multiple material muscle, in the range of multiple material muscle end certain length, using method compartment of terrain of the present invention
Several metal material short tube additional ribs are anchored, the anchoring property of multiple material muscle will obtain a certain degree of raising.As shown in figure 4,
By in the structure insertion existing concrete structure of the present invention, strengthen anchoring effect.
The multiple material muscle obtained to the extrusion process using the present invention-additional rib test specimen carries out anti-shear performance experiment,
Top pressure loading, the multiple material muscle of test-attached are carried out to additional rib end along muscle material length direction by centre-hole jack in experiment
The shear-carrying capacity at ribbing interface.Reach before peak load loading speed control in 10kN/min or so, after reaching peak load,
With Bit andits control so that additional rib displacement meter registration slowly equably increases.When additional rib and both muscle material free ends displacement meter
After difference of reading (i.e. Relative sliding) is more than 10mm, it is believed that slippage is excessive, stops loading.8 groups are considered in experiment and amounts to 24
Test specimen.The change of parameter mainly has：Multiple material muscle diameter, aluminium-alloy pipe model and wall thickness, detail parameters are shown in Table 1.In test specimen numbering
Alphabetical " H " and " T " aluminium alloy model 5052-H32 and 6061-T6 used in representative respectively.Multiple material muscle-additional rib interface shearing-resistance
Energy result of the test is as shown in table 1：
The multiple material muscle-additional rib test specimen parameter of table 1 and interface shearing-resistance performance test results
Because length is changed into 25mm after 20mm length aluminium-alloy pipe extrusion forming additional ribs, in order to contrast multiple material muscle-additional
The interface shearing-resistance performance of rib and multiple material muscle-concrete, center pull-out test is carried out to two kinds of multiple material muscle of 10mm and 11mm diameters,
Bond length takes 25mm.The length of side of concrete cube is 150mm in pull-out test, and concrete actual measurement compression strength average value is
39MPa, per effective reinforcement 2 test specimens of material, the last letter " C " represents multiple material muscle-concrete interface shear behavior in test specimen numbering
Experiment.Result of the test, which collects, is listed in table 2.
The interface shearing-resistance results of property of the multiple material muscle-concrete sample of table 2
Knowable to multiple material muscle-additional rib and multiple material muscle-concrete interface shearing strength are contrasted, in interfacial adhesion length
Under conditions of 25mm, compared to multiple material muscle-concrete interface shearing strength, the shearing strength at multiple material muscle-additional rib interface has
Improve by a relatively large margin, the CFRP tendons of 10mm diameters are improved to 1.31~1.90 times；The CFRP tendons of 11mm diameters are improved to 1.71~
2.49 again.As can be seen here, the introducing of additional rib improves the anchoring property of multiple material muscle.
For understand test in extrusion forming process to multiple material muscle can influence, carried out 4 groups totally 12 carry additional rib
The ultimate tensile strength experiment of multiple material muscle, there is the former long 20mm by identical extrusion process extrusion forming used in experiment in the middle part of muscle material
Aluminium-alloy pipe, result of the test is shown in Table 3.
The 10mm diameter CFRP tendons ultimate tensile strength result of the tests of table 3
As can be seen from Table 3, muscle material intensity has and declined to a certain degree after extruding additional rib.For 10mm diameters CFRP
Muscle, using the aluminium-alloy pipe of 5052-H32 models, mean intensity loss late is 3.99%-10.34%.And use 6061-T6 types
Number aluminium-alloy pipe, only carried out the experiment of 4mm wall thickness, the mean intensity loss late of CFRP tendons is 9.29%, more than 5052-
The 3.99% of H32 models.
Experimental study is found, it is ensured that the radially uniform synchronous compression of aluminium-alloy pipe, can further reduce the journey of muscle material damage
Degree, make multiple material rigidity of soft tissues degree loss late within 5%, as shown in band " * " number in table.
Influence of the main research additional rib number of experiment to multiple material muscle anchoring property, drawing is carried out to the multiple material muscle of band additional rib
Experiment：Using the multiple material muscle of above-mentioned 10mm and 11mm diameters, the aluminium-alloy pipe that 20mm is long, wall thickness is 4mm is additional rib material, according to
Above-mentioned pressing method extrusion forming additional rib on multiple material muscle, pull-out test is carried out to the multiple material muscle with additional rib.Concrete is set
Meter grade is C30.Pull-out experiment concrete test block size is 150mm × 150mm × 150mm and 150mm × 150mm × 300mm.
Additional rib and muscle material interfacial adhesion length are lbMultiple (lb=25mm), 4l is taken respectivelybAnd 6lb, i.e. 100mm and 150mm.It is attached
Ribbing is in the range of multiple material muscle bond length, according to being equidistantly uniformly distributed.The result of the pull-out test of the multiple material muscle of two kinds of diameters
Table 4 and table 5 are listed in respectively.Test specimen numbering form is in table：Muscle material type and diameter-bond length-additional rib number, wherein C
Represent CFRP tendons.
Influence of the additional rib number to bond and anchor property under the 10mm diameter CFRP tendons difference bond lengths of table 4
Influence of the additional rib number to bond and anchor property under the 11mm diameter CFRP tendons difference bond lengths of table 5
As can be seen from Table 4, for the CFRP tendons of 10mm diameters, when bond length is 100mm, the multiple material muscle of band additional rib
Ultimate tensile stress compare and improve 33.89% without the multiple material muscle of additional rib.When bond length is 150mm, 2 or 3 are anchored
During additional rib, 30.82% and 42.25% has been respectively increased in its ultimate tensile stress, and the damage -form of muscle material pulls out from multiple material muscle
Go out to be converted to the rupture failure of muscle material, muscle material ultimate tensile stress relatively original very limited tensile strength.It can be seen that additional rib is to carrying
The multiple material muscle anchoring property positive effect of height.
As can be seen from Table 5, for the CFRP tendons of 11mm diameters, when bond length is 100mm, although the destruction mould of test specimen
Formula is that concrete splitting destroys, but it will be seen that in the test specimen of cleavage fracture, because of the presence of additional rib, and multiple material during destruction
The tension of muscle improves 29.70%.When bond length is 150mm, the muscle material tension ratio of 3 additional ribs is anchored without anchoring
Improve 52.79%.
Claims (6)
1. a kind of structure for improving multiple material muscle anchoring property, including multiple material muscle (1), it is characterised in that covered on the multiple material muscle (1)
There is additional rib (2), the additional rib (2) forms integrative-structure by extruding the laterally homogeneous compression of generation with multiple material muscle (1)；Its
In, the additional rib is short metal pipe.
2. the structure according to claim 1 for improving multiple material muscle anchoring property, it is characterised in that the additional rib (2) by
Aluminium alloy or bronze or soft metal do internal layer high rigidity metal and do outer layer and be made.
3. the structure according to claim 1 for improving multiple material muscle anchoring property, it is characterised in that the additional rib (2) is pressed
According to equidistant regular or not equidistant rule setting on multiple material muscle.
4. the structure according to claim 1 for improving multiple material muscle anchoring property, it is characterised in that the additional rib (2)
Quantity is 2~4.
5. the structure according to claim 1 for improving multiple material muscle anchoring property, it is characterised in that the multiple material muscle (1) is
Twisted steel, and the depth of thread is 0.3~0.5mm.
6. the structure according to claim 1 for improving multiple material muscle anchoring property, it is characterised in that described additional rib (2)
Length is 1~4 times of multiple material muscle diameter, and internal diameter is more than multiple material muscle external diameter and 0~1mm of difference before additional rib extruding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720616026.8U CN207092384U (en) | 2017-05-27 | 2017-05-27 | Improve the structure of multiple material muscle anchoring property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720616026.8U CN207092384U (en) | 2017-05-27 | 2017-05-27 | Improve the structure of multiple material muscle anchoring property |
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| Publication Number | Publication Date |
|---|---|
| CN207092384U true CN207092384U (en) | 2018-03-13 |
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|---|---|---|---|
| CN201720616026.8U Expired - Fee Related CN207092384U (en) | 2017-05-27 | 2017-05-27 | Improve the structure of multiple material muscle anchoring property |
Country Status (1)
| Country | Link |
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| CN (1) | CN207092384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119855A (en) * | 2017-05-27 | 2017-09-01 | 东南大学 | Improve the structure and its extrusion process of multiple material muscle anchoring property |
| CN110258930A (en) * | 2019-05-23 | 2019-09-20 | 北京建筑大学 | Fiber reinforced rebar anchorage, manufacture mold and its application method |
-
2017
- 2017-05-27 CN CN201720616026.8U patent/CN207092384U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119855A (en) * | 2017-05-27 | 2017-09-01 | 东南大学 | Improve the structure and its extrusion process of multiple material muscle anchoring property |
| CN110258930A (en) * | 2019-05-23 | 2019-09-20 | 北京建筑大学 | Fiber reinforced rebar anchorage, manufacture mold and its application method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 |