CN104727487A - Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system - Google Patents
Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system Download PDFInfo
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- CN104727487A CN104727487A CN201510127337.3A CN201510127337A CN104727487A CN 104727487 A CN104727487 A CN 104727487A CN 201510127337 A CN201510127337 A CN 201510127337A CN 104727487 A CN104727487 A CN 104727487A
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Abstract
The invention discloses a composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system which comprises an anchor ring, a two-piece wedge-shaped clip, a soft metal sheath and an epoxy adhesive film, wherein the soft metal sheath is fixed at the anchoring end of a CFRP tendon by the epoxy adhesive film so as to form an integral apparatus; and the integral apparatus is inserted in the two-piece wedge-shaped clip, and the two-piece wedge-shaped clip extends in the anchor ring and then is fixed. The composite anchorage device has the characteristics of small size, large anchoring force, and easiness for installation and use, and is applicable to the on-site construction of prestressed structures. Under the condition of not increasing the size of the anchor ring, the anchoring force can be increased in a mode of increasing the bonding length of the soft metal sheath, and the transverse force of the CFRP tendon is protected. The composite CFRP tendon anchoring system can anchor a single tendon, and also can anchor multiple tendons, thus being extremely applicable to prestressed structures.
Description
Technical field
The present invention relates to the prestressed structure field in civil engineering, particularly relate to a kind of combined type CFRP muscle anchoring system.
Background technology
The advantage such as carbon fiber composite reinforcement material/bar (Carbon Fiber Reinforced Polymer, CFRP) has high-strength light, corrosion resistance is good, fatigue resistance is good and loss of prestress is little.At present, CFRP muscle has been applied in prestressed structure and has replaced reinforcing bar as the drag-line component in structure, achieves good effect.
CFRP muscle needs special anchorage style because its lateral stressed performance is weak.Existing CFRP muscle anchorage style is based on bonded and clipping ground tackle, and these two kinds multi-form ground tackles respectively have merits and demerits:
1, bond type anchorage anchored force is large, can anchoring many muscle materials, but ground tackle volume is large, cost is high and use inconvenience;
2, clipping ground tackle volume is little, easy to use, but anchored force is limited, usually can only the single muscle material of anchoring, the high and poor universality of machining accuracy.
The present invention is in view of the merits and demerits of CFRP muscle, and designing the anchoring system that anchored force is large, volume is little and easy to use is the key applying CFRP muscle widely.
Summary of the invention
The invention provides a kind of combined type CFRP muscle anchoring system, the object of the invention is that designing the anchoring system that anchored force is large, volume is little and easy to use makes CFRP muscle obtain using more widely, described below:
A kind of combined type CFRP muscle anchoring system, comprising: anchor ring, described combined type CFRP muscle anchoring system also comprises: two-piece type wedge shape intermediate plate, soft metal protective sleeve and epoxy jelly membrane;
Described soft metal protective sleeve is fixed on the anchored end of CFRP muscle by described epoxy jelly membrane, become integrated device; It is inner that integrated device is located in described two-piece type wedge shape intermediate plate, and described two-piece type wedge shape intermediate plate penetrates described anchor ring and fixes.
Further, the profile of described anchor ring is cylinder, and inner side is 2 °, inclination angle variable cross-section cylinder.Described anchor ring is many muscle formula anchor ring or single anchor ring.Outside the first half of described anchor ring is provided with screw thread.
The profile of described two-piece type wedge shape intermediate plate is variable cross-section cylinder, and outer angle of heel is 2.1 °, and inner side is cylinder, and inner cylinder diameter is greater than described soft metal protective sleeve diameter 0.5mm.Inside described two-piece type wedge shape intermediate plate, sharp corner carries out round and smooth process, and blasting treatment is carried out in inner side.
Further, described soft metal protective sleeve is aluminum tube, and wall thickness is more than or equal to 1.5mm, cuts into inside/outside side spray sand after two halves.
Wherein, described epoxy jelly membrane is thermoset epoxy glued membrane, and thickness is less than or equal to 0.2mm, and shear strength is more than or equal to 15MPa, and bond length is: the product of CFRP muscle tensile strength and CFRP muscle diameter is again divided by 60.
The beneficial effect of technical scheme provided by the invention is: the present invention designs the CFRP muscle anchoring system of combined type in conjunction with bond type anchorage and clipping ground tackle advantage separately.With clipping ground tackle for fundamental type, merge the feature of bond type anchorage, solve clipping ground tackle anchored force little and be not suitable for the shortcoming of anchoring many CFRP muscle.CFRP muscle is made better to be applied to prestressed structure.This composite anchorage has small volume, anchored force feature large and easy to install, is applicable to the site operation of prestressed structure.When not increasing anchor ring size, the mode increasing soft metal protective sleeve bond length can be adopted to increase anchored force, and protect the lateral stressed of CFRP muscle.This combined type CFRP muscle anchoring system can the single muscle material of anchoring, also can anchoring many muscle materials, is applicable to very much prestressed structure and uses.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of combined type CFRP muscle anchoring system;
Fig. 2 is the schematic diagram of combined type CFRP muscle single reinforcement ground tackle;
Fig. 3 is the plan view of combined type CFRP muscle single reinforcement ground tackle;
Fig. 4 is the plan view of anchor ring;
Fig. 5 is the plan view of two-piece type wedge shape intermediate plate.
In accompanying drawing, the list of parts representated by each label is as follows:
1: anchor ring; 2: two-piece type wedge shape intermediate plate;
3: soft metal protective sleeve; 4:CFRP muscle;
5: many muscle formula anchor ring
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below embodiment of the present invention is described further in detail.
The present invention is for solving in known technology the technical problem existed and the combined type CFRP muscle anchoring system providing a kind of prestressed structure to use, this anchoring system can the CFRP muscle of anchoring many surface light circle or screw thread effectively, also can anchoring CFRP muscle separately, there is the advantage that volume is little, anchored force is large and easy to install, see Fig. 1-Fig. 5, described below:
A kind of combined type CFRP muscle anchoring system, comprising: anchor ring 1, two-piece type wedge shape intermediate plate 2, soft metal protective sleeve 3, epoxy jelly membrane (not shown) four parts.
Soft metal protective sleeve 3 is fixed on the anchored end of CFRP muscle 4 by epoxy jelly membrane, becomes integrated device; It is inner that integrated device is located in two-piece type wedge shape intermediate plate 2, and two-piece type wedge shape intermediate plate 2 penetrates anchor ring 1 and fixes.
Wherein, anchor ring 1 profile is cylinder, and inner side is 2 °, inclination angle variable cross-section cylinder; Two-piece type wedge shape intermediate plate 2 profile is variable cross-section cylinder, and outer angle of heel is 2.1 °, and the inner side of two-piece type wedge shape intermediate plate 2 is cylinder, and cylinder diameter is soft metal protective sleeve diameter+0.5mm; Soft metal protective sleeve 3 can adopt aluminum tube, and wall thickness is more than or equal to 1.5mm, cuts into inside/outside side spray sand after two halves; Epoxy jelly membrane is thermoset epoxy glued membrane, and thickness is not more than 0.2mm, and shear strength is not less than 15MPa, and bond length is: (CFRP muscle tensile strength × CFRP muscle diameter)/60.When adopting above-mentioned specifications parameter, the quality of fit of ground tackle all parts is greater than 95%, and can reach best repercussion effect, anchoring efficiency is greater than 95%, and anchoring stability is greater than 90%.
Can also adopt other size during specific implementation, the embodiment of the present invention does not limit this.
Epoxy jelly membrane is glued according to the anchored end of muscle material diameter dimension around CFRP muscle 4; the soft metal protective sleeve 3 of well cutting is bonded at the outside of CFRP muscle 4; to the CFRP muscle anchored end heating pressurization a period of time glued, epoxy jelly membrane is melted subsequently, the epoxy glue of most relief thawing in atmosphere Temperature fall solidifies.
During installation mold, 4, anchoring many CFRP muscle adopt many muscle formula anchor ring 5, and the single CFRP muscle 4 of anchoring adopts single anchor ring 1.By the CFRP muscle 4 made; now soft metal protective sleeve 3 is integrated to be bonded in its anchored end with epoxy jelly membrane and CFRP muscle 1; penetrate in two-piece type wedge shape intermediate plate 2, then penetrate anchor ring 1 after being alignd by two-piece type wedge shape intermediate plate 2, manually can apply pretightning force to two-piece type wedge shape intermediate plate 2 and anchor ring 1.
During specific implementation, the anchor ring 1 of ground tackle and two-piece type wedge shape intermediate plate 2 are by cure process, and outside anchor ring 1, the first half can make screw thread, are conveniently connected with miscellaneous part.Inside two-piece type wedge shape intermediate plate 2, sharp corner carries out round and smooth process, and borax process is carried out in inner side.Soft metal protective sleeve 3 adopts aluminum pipe, cuts into two halves by Linear cut, and blasting treatment is done in interior outside.Epoxy jelly membrane adopts thermoset epoxy glued membrane, and be attached to the anchored end of CFRP muscle 4 according to the bond length calculated, before sticky epoxy jelly membrane, this section of CFRP muscle 4 adopts acetone clean surface, and to polish adhesive surface with coarse sandpaper.After aluminum pipe and CFRP muscle material 4 are bondd by epoxy jelly membrane, place it in heater and heat 120 ° and continue two hours, apply slight pressure.The cooling solidification in natural air of the epoxy glue of melting is made after heating.The CFRP muscle 4 making anchored end is penetrated in two-piece type wedge shape intermediate plate 2, after the alignment of two-piece type wedge shape intermediate plate 2, penetrated in anchor ring 1.Sliding agent can be smeared at the contact surface of two-piece type wedge shape intermediate plate 2 and anchor ring 1, by instruments such as hammers, pretightning force be applied to anchor ring 1 and two-piece type wedge shape intermediate plate 2.
The embodiment of the present invention is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a combined type CFRP muscle anchoring system, comprising: anchor ring, it is characterized in that, described combined type CFRP muscle anchoring system also comprises: two-piece type wedge shape intermediate plate, soft metal protective sleeve and epoxy jelly membrane;
Described soft metal protective sleeve is fixed on the anchored end of CFRP muscle by described epoxy jelly membrane, become integrated device; It is inner that integrated device is located in described two-piece type wedge shape intermediate plate, and described two-piece type wedge shape intermediate plate penetrates described anchor ring and fixes.
2. a kind of combined type CFRP muscle anchoring system according to claim 1, is characterized in that, the profile of described anchor ring is cylinder, and inner side is 2 °, inclination angle variable cross-section cylinder.
3. a kind of combined type CFRP muscle anchoring system according to claim 1; it is characterized in that, the profile of described two-piece type wedge shape intermediate plate is variable cross-section cylinder, and outer angle of heel is 2.1 °; inner side is cylinder, and inner cylinder diameter is greater than described soft metal protective sleeve diameter 0.5mm.
4. a kind of combined type CFRP muscle anchoring system according to claim 1, it is characterized in that, described soft metal protective sleeve is aluminum tube, and wall thickness is more than or equal to 1.5mm, cuts into inside/outside side spray sand after two halves.
5. a kind of combined type CFRP muscle anchoring system according to claim 1, it is characterized in that, described epoxy jelly membrane is thermoset epoxy glued membrane, thickness is less than or equal to 0.2mm, shear strength is more than or equal to 15MPa, and bond length is: the product of CFRP muscle tensile strength and CFRP muscle diameter is again divided by 60.
6. a kind of combined type CFRP muscle anchoring system according to claim 1 and 2, is characterized in that, described anchor ring is many muscle formula anchor ring or single anchor ring.
7. a kind of combined type CFRP muscle anchoring system according to claim 1 and 2, it is characterized in that, outside the first half of described anchor ring is provided with screw thread.
8. a kind of combined type CFRP muscle anchoring system according to claim 1 or 3, is characterized in that, inside described two-piece type wedge shape intermediate plate, sharp corner carries out round and smooth process, and blasting treatment is carried out in inner side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510127337.3A CN104727487A (en) | 2015-03-23 | 2015-03-23 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
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| CN201510127337.3A CN104727487A (en) | 2015-03-23 | 2015-03-23 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
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| CN104990686A (en) * | 2015-07-09 | 2015-10-21 | 天津大学 | Testing apparatus of multi-span submarine pipeline vortex-induced vibration on vertical uniform incoming flow condition |
| CN105203298A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Inclination angle local flow speed increase incoming flow ocean riser vortex-induced vibration testing device |
| CN105203297A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Vortex-induced vibration testing device capable of changing spatial arrangement of ocean vertical pipe bundles |
| CN105203281A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Testing device for local flow rate increasing dip-angle incoming flow multi-span seabed pipeline vortex-induced vibration |
| RU2613370C1 (en) * | 2015-10-26 | 2017-03-16 | Борис Васильевич Накашидзе | Device for anchoring composite reinforcement |
| CN106522472A (en) * | 2016-12-14 | 2017-03-22 | 长安大学 | Sliding self-locking CFRP rib anchor device and mounting method thereof |
| RU176504U1 (en) * | 2016-07-04 | 2018-01-22 | Булат Шавкатович Умаров | ANCHOR DEVICE FOR FIXING PRELIMINARY TENSIONED REINFORCED RODS |
| RU182818U1 (en) * | 2017-11-30 | 2018-09-04 | Давид-Константинос Георгиос Накашидзе | DEVICE FOR ANCHORING COMPOSITE REINFORCES |
| CN108507934A (en) * | 2018-04-09 | 2018-09-07 | 武汉科技大学 | A kind of experimental rig for FRP tendons body immersion corrosion |
| CN109356029A (en) * | 2018-11-27 | 2019-02-19 | 长安大学 | A kind of compound anchorage of CFRP tendons pre-extrusion |
| CN109680876A (en) * | 2019-01-21 | 2019-04-26 | 昆明理工大学 | A kind of clipping anchor of pre-tensioning system CFRP tendons |
| CN110186751A (en) * | 2019-05-17 | 2019-08-30 | 天津大学 | A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test |
| CN110468969A (en) * | 2019-08-17 | 2019-11-19 | 温州瓯厦建设有限公司 | A kind of reinforcing bar drawing anchor |
| RU196459U1 (en) * | 2019-10-02 | 2020-03-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | ANCHOR DEVICE WITH RING BOARD FOR FIXING PRELIMINARY TENSIONED COMPOSITE REINFORCED RODS |
| RU196461U1 (en) * | 2019-09-30 | 2020-03-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | ANCHOR DEVICE WITH PIN AND SPIKE FOR FIXING PRELIMINARY TENSIONED COMPOSITE REINFORCED RODS |
| RU196499U1 (en) * | 2019-09-30 | 2020-03-03 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | PIN ANCHOR FOR FIXING PRELIMINARY-TENSIONED COMPOSITE REINFORCED RODS |
| RU196500U1 (en) * | 2019-09-30 | 2020-03-03 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | ANCHORED DEVICE WITH A SPIKE FOR FIXING THE PRELIMINARY TENSIONED COMPOSITE REINFORCED RODS |
| CN111197384A (en) * | 2020-01-06 | 2020-05-26 | 山西省交通建设工程质量检测中心（有限公司） | Prestressed steel strand anchoring device |
| CN111287465A (en) * | 2020-02-29 | 2020-06-16 | 天津大学 | CFRP cable integral type large-angle clamping piece type anchoring system |
| RU2755614C1 (en) * | 2021-02-24 | 2021-09-17 | Давид-Константинос Георгиос Накашидзе | Device for anchoring composite reinforcement |
| CN113914549A (en) * | 2021-08-29 | 2022-01-11 | 北京工业大学 | Fusion type anchoring method for fiber reinforced thermoplastic composite material unidirectional component |
| RU2776854C1 (en) * | 2021-11-16 | 2022-07-27 | Акционерное общество "Научно-исследовательский центр "Строительство", АО "НИЦ "Строительство" | Method for formation of the anchor device of composite reinforcement and anchor device |
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| CN104990686A (en) * | 2015-07-09 | 2015-10-21 | 天津大学 | Testing apparatus of multi-span submarine pipeline vortex-induced vibration on vertical uniform incoming flow condition |
| CN104990686B (en) * | 2015-07-09 | 2017-08-29 | 天津大学 | Vertical uniform inlet flow conditions multispan submarine pipeline vortex-induced vibration experimental rig |
| CN105203298A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Inclination angle local flow speed increase incoming flow ocean riser vortex-induced vibration testing device |
| CN105203297A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Vortex-induced vibration testing device capable of changing spatial arrangement of ocean vertical pipe bundles |
| CN105203281A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Testing device for local flow rate increasing dip-angle incoming flow multi-span seabed pipeline vortex-induced vibration |
| CN105203297B (en) * | 2015-09-18 | 2017-11-21 | 天津大学 | The vortex vibration testing device of marine riser beam space arrangement can be changed |
| CN105203298B (en) * | 2015-09-18 | 2017-11-21 | 天津大学 | Inclination angle local velocity increase incoming vortex-induced vibration of marine riser experimental rig |
| CN105203281B (en) * | 2015-09-18 | 2018-03-23 | 天津大学 | Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig |
| RU2613370C1 (en) * | 2015-10-26 | 2017-03-16 | Борис Васильевич Накашидзе | Device for anchoring composite reinforcement |
| RU176504U1 (en) * | 2016-07-04 | 2018-01-22 | Булат Шавкатович Умаров | ANCHOR DEVICE FOR FIXING PRELIMINARY TENSIONED REINFORCED RODS |
| CN106522472A (en) * | 2016-12-14 | 2017-03-22 | 长安大学 | Sliding self-locking CFRP rib anchor device and mounting method thereof |
| RU182818U1 (en) * | 2017-11-30 | 2018-09-04 | Давид-Константинос Георгиос Накашидзе | DEVICE FOR ANCHORING COMPOSITE REINFORCES |
| CN108507934A (en) * | 2018-04-09 | 2018-09-07 | 武汉科技大学 | A kind of experimental rig for FRP tendons body immersion corrosion |
| CN109356029A (en) * | 2018-11-27 | 2019-02-19 | 长安大学 | A kind of compound anchorage of CFRP tendons pre-extrusion |
| CN109356029B (en) * | 2018-11-27 | 2024-05-03 | 长安大学 | CFRP rib pre-extrusion composite anchorage device |
| CN109680876A (en) * | 2019-01-21 | 2019-04-26 | 昆明理工大学 | A kind of clipping anchor of pre-tensioning system CFRP tendons |
| CN110186751A (en) * | 2019-05-17 | 2019-08-30 | 天津大学 | A kind of clamping plate type anchorage for light circle pultrusion CFRP bar drawing test |
| CN110468969A (en) * | 2019-08-17 | 2019-11-19 | 温州瓯厦建设有限公司 | A kind of reinforcing bar drawing anchor |
| RU196499U1 (en) * | 2019-09-30 | 2020-03-03 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | PIN ANCHOR FOR FIXING PRELIMINARY-TENSIONED COMPOSITE REINFORCED RODS |
| RU196461U1 (en) * | 2019-09-30 | 2020-03-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | ANCHOR DEVICE WITH PIN AND SPIKE FOR FIXING PRELIMINARY TENSIONED COMPOSITE REINFORCED RODS |
| RU196500U1 (en) * | 2019-09-30 | 2020-03-03 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | ANCHORED DEVICE WITH A SPIKE FOR FIXING THE PRELIMINARY TENSIONED COMPOSITE REINFORCED RODS |
| RU196459U1 (en) * | 2019-10-02 | 2020-03-02 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | ANCHOR DEVICE WITH RING BOARD FOR FIXING PRELIMINARY TENSIONED COMPOSITE REINFORCED RODS |
| CN111197384A (en) * | 2020-01-06 | 2020-05-26 | 山西省交通建设工程质量检测中心（有限公司） | Prestressed steel strand anchoring device |
| CN111287465A (en) * | 2020-02-29 | 2020-06-16 | 天津大学 | CFRP cable integral type large-angle clamping piece type anchoring system |
| RU2755614C1 (en) * | 2021-02-24 | 2021-09-17 | Давид-Константинос Георгиос Накашидзе | Device for anchoring composite reinforcement |
| CN113914549A (en) * | 2021-08-29 | 2022-01-11 | 北京工业大学 | Fusion type anchoring method for fiber reinforced thermoplastic composite material unidirectional component |
| RU2776854C1 (en) * | 2021-11-16 | 2022-07-27 | Акционерное общество "Научно-исследовательский центр "Строительство", АО "НИЦ "Строительство" | Method for formation of the anchor device of composite reinforcement and anchor device |
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Application publication date: 20150624 |