CN204960139U - Prestressing force FRP muscle stretch -draw anchor - Google Patents
Prestressing force FRP muscle stretch -draw anchor Download PDFInfo
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- CN204960139U CN204960139U CN201520671634.XU CN201520671634U CN204960139U CN 204960139 U CN204960139 U CN 204960139U CN 201520671634 U CN201520671634 U CN 201520671634U CN 204960139 U CN204960139 U CN 204960139U
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Abstract
The utility model relates to a prestressing force FRP muscle stretch -draw anchor, including prestressing force FRP muscle, adhesive material, steel casing pipe, circular steel sheet, bolt, annular steel plate washer and circular ring, the seamless high -strength steel sheathed tube open end that is located stretch -draw end and anchor end department is inserted respectively at the both ends of prestressing force FRP muscle to it is fixed with adhesive material, the bolt passes the rampart and the installation and the supporting annular steel plate washer of bolt in circular ring of the circular ring of stretch -draw end, then in the pore reserved of bolt screw in stretch -draw end steel casing pipe, in the pore in processing threaded, weld the shutoff with circular steel sheet bottom the pore, pass the blind end of anchor end's steel casing pipe the rampart of the circular ring of anchor end to be in the same place with the welding of circular ring. The utility model discloses the device is applicable to the FRP muscle material of various materials and various cross -sections form, and simple structure, with low costs, construction convenience, can be used to that all kinds of adoption prestressing force FRP muscle technique is built and reinforced (rfd) concrete structure component in.
Description
Technical field
The utility model relates to a kind of pre-stress FRP bar stretching and anchoring device.
Background technology
In recent years, FRP muscle material is because having the outstanding advantages such as high-strength light, corrosion-resistant and antifatigue and being applied in Practical Project more and more widely.Compared to non-prestressed FRP muscle, the low shortcoming of the high-strength performance utilization rate of the former FRP material not only can be overcome when adopting prestressed FRP rebar construction or reinforced concrete structure component, and very positive effect is had in the generation of prevention FRP stripping damage, the rigidity improving component and cracking load etc., therefore prestressed FRP rebar technology has more wide application prospect.
But at present when adopting similar traditional mechanical grip formula stretching and anchoring device to FRP muscle Shi Hanzhang, because FRP muscle is a kind of anisotropic material, its Transverse Shear Strength is well below endwise tensile strength, the phenomenon of the FRP muscle entirety fracture of therefore concentrating position often easily to occur to be caused by cutting off because of part FRP fibre at stretching end or anchored end iso-stress, thus effective prestressing force cannot be applied to FRP muscle.On the other hand, the most complex structure of existing FRP bar stretching and anchoring device and need be placed on component ends, is thus difficult to use in the hogging moment region of the component such as reinforced concrete continuous beam, plate.This is external generally needs by Large Hydraulic Equipment during FRP muscle Shi Hanzhang, complicated construction technique and costly.The existence of these problems governs development and the application of prestressed FRP rebar technology.
Utility model content
For solving Problems existing in the rib prestressed applying scheme of above-mentioned FRP, the purpose of this utility model is to provide a kind of pre-stress FRP bar stretching and anchoring device.Can effectively prevent FRP muscle from laterally being cut off in Shi Hanzhang process, again by easy manual manipulation mode Shi Hanzhang, and at the FRP bar stretching and anchoring device that the positive and negative moment of flexure region of component is all suitable for.
For achieving the above object, it is as follows that the utility model solves the problems of the technologies described above taked technical scheme:
A kind of pre-stress FRP bar stretching and anchoring device, comprise prestressed FRP rebar, binding material, steel sleeve, circular steel disc, bolt, annular steel plate washer and circular anchor ring, the openend of the seamless high-strength steel sleeve pipe being positioned at stretching end and anchored end place is inserted at the two ends of described prestressed FRP rebar respectively, and fix with binding material, described bolt passes the ring wall of the circular anchor ring of stretching end and in circular anchor ring, installs the annular steel plate washer with bolt matching, then bolt screws in the reserved duct of stretching end steel sleeve, screw thread is processed with in duct, welding shutoff is carried out with circular steel disc bottom duct, by the ring wall of the blind end of the steel sleeve of anchored end through the circular anchor ring of anchored end, and be connected together with doughnut boxing.
Steel sleeve at stretching end place welds a gate-type steel disc in advance to limit the rotation of steel sleeve near the end of bolt.
Described prestressed FRP rebar cross sectional shape is circular, rectangle or square; Or adopt FRP plate bar to replace prestressed FRP rebar; The sandblasting of prestressed FRP rebar surface or Ginding process are processed to the adhesion stress strengthened between prestressed FRP rebar and binding material.
Described steel sleeve inside is processed with screw thread, and is processed in inside, openend the rim of a cup shape shunk to port.
The thickness of described circular anchor ring is 7 ~ 11mm, can provide enough rigidity as prestressing force load-carrying construction; The diameter of circular anchor ring is 76mm, and the operation for spanner tightening nut provides enough spaces; Height and its buried depth of circular anchor ring adapt, and are generally 20 ~ 30mm.
Described prestressed FRP rebar can adopt carbon fibre bar, aramid fiber reinforced plastic bars or glass fiber-reinforced polymer, and its cross sectional shape can be circular, rectangle or square, also can adopt FRP plate bar.For strengthening the bonding between FRP muscle and binding material, also can process methods such as the sandblasting of prestressed FRP rebar surface or grindings.
Described binding material can select cementing agent of different nature according to the difference of prestressed FRP rebar, as acrylic resin, epoxy resin etc., and can add curing compound, flexibilizer etc. wherein and improves adhesive property.
Compared with prior art, tool has the following advantages the utility model:
The utility model by prestress application on steel sleeve, utilize reliable bonding between steel sleeve and prestressed FRP rebar that prestressing force is passed to prestressed FRP rebar, jointly stressed both during stretch-draw, thus the FRP muscle caused because its Transverse Shear Strength is not enough when effectively prevent traditional direct clamping FRP muscle Shi Hanzhang is by the phenomenon of cutting off.
Utilize the nut of spanner swivel bolt to carry out turnbuckle in the utility model and just can manually realize prestressed applying, whole process is without the need to using hydraulic tensioning machinery, simple to operate and action required space is little, is particularly suitable for carrying out of field operation.
In the utility model, ground tackle is a pair anchor ring, simple structure, can embed neatly in the concrete of component corresponding site according to the design attitude of prestressed FRP rebar, efficiently solve the difficulty at component hogging moment area Shi Hanzhang, reach the object that positive and negative moment of flexure region is all suitable for.
In addition, pre-stress FRP bar stretching and anchoring device described in the utility model is applicable to the FRP muscle material of various material and various section form, and simple structure, cost are low, easy construction, can be used in the concrete structure member of the construction of all kinds of employing prestressed FRP rebar technology and reinforcing.
Accompanying drawing explanation
Fig. 1 is the utility model pre-stress FRP bar stretching and anchoring device overall structure schematic diagram.
Fig. 2 is the structural representation of the utility model stretching end.
Fig. 3 is the utility model stretching end welding gate-type steel disc place schematic cross-section.
Fig. 4 is the structural representation of the utility model anchored end.
Fig. 5 is the utility model steel sleeve rim of a cup place schematic cross-section.
Fig. 6 is the floor map that the utility model pre-stress FRP bar stretching and anchoring device embeds in concrete component.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further.
As Fig. 1, Fig. 2, Fig. 4, shown in Fig. 6, a kind of pre-stress FRP bar stretching and anchoring device, comprise prestressed FRP rebar 1, binding material 2, steel sleeve 3, circular steel disc 4, bolt 5, annular steel plate washer 6 and circular anchor ring 7, the openend of the seamless high-strength steel sleeve pipe 3 being positioned at stretching end and anchored end place is inserted at the two ends of described prestressed FRP rebar 1 respectively, and fix with binding material 2, described bolt 5 passes the ring wall of the circular anchor ring 7 of stretching end and install the annular steel plate washer 6 supporting with bolt 5 in circular anchor ring 7, then bolt 5 screws in the reserved duct of stretching end steel sleeve 3, screw thread is processed with in duct, welding shutoff is carried out with circular steel disc 4 bottom duct, by the ring wall of the blind end of the steel sleeve 3 of anchored end through the circular anchor ring 7 of anchored end, and weld together with circular anchor ring 7.
As shown in figures 1 and 3, the steel sleeve 3 at stretching end place welds a gate-type steel disc 8 in advance to limit the rotation of steel sleeve 3 near the end of bolt 5.
Described prestressed FRP rebar 1 cross sectional shape is circular, rectangle or square; Or adopt FRP plate bar to replace prestressed FRP rebar 1; Process to strengthen the adhesion stress between prestressed FRP rebar 1 and binding material 2 to prestressed FRP rebar 1 surface sandblasting or Ginding process.
As shown in Figure 5, described steel sleeve 3 inside is processed with screw thread, and is processed in inside, openend the rim of a cup shape shunk to port.
The thickness of described circular anchor ring 7 is 7 ~ 11mm, can provide enough rigidity as prestressing force load-carrying construction; The diameter of circular anchor ring 7 is 76mm, and the operation for spanner tightening nut 5 provides enough spaces; Height and its buried depth of circular anchor ring 7 adapt, and are generally 20 ~ 30mm.
The manufacturing process of the utility model device is as follows:
1) two threaded seamless high-strength steel sleeve pipes 3 of inner surface of getting that one is long and the other is short, the length of steel sleeve 3 can regulate according to the difference of stress distribution.Two steel sleeves 3 are one end and close, and the rim of a cup shape shunk to port is processed in other end inside, and the size of rim of a cup and the cross-sectional sizes of prestressed FRP rebar 1 adapt, and facilitate follow-up to infusion and binding material 2 in steel sleeve 3.Long steel sleeve 3 circular steel disc 4 in 100mm place in past pipe carries out shutoff, then bolt 5 is passed the hole on annular steel disc 6 supporting with it and circular anchor ring 7 ring wall of stretching end, thus insert in circular anchor ring 7, bolt 5 is screwed in the 100mm pipeline that long steel sleeve reserved in advance simultaneously.The diameter of screw rod will with the diameter compatible cover of pipeline, the screw thread on screw rod also will match with the screw thread of corresponding pipeline part, is convenient to knob fastening; Simultaneously for stretching end steel sleeve when preventing Shi Hanzhang rotates in bolt 5 drilling process, limit the rotation of steel sleeve at the steel sleeve welding edges gate-type steel disc 8 near bolt 5.Steel sleeve 3, through being resisted against on opposite side inwall behind the hole on circular anchor ring 7 ring wall of anchored end, then firmly welds with the position that anchor ring 7 is contacting by short steel sleeve 3 blind end.
2) prestressed FRP rebar 1 two ends are inserted into steel sleeve blind end respectively by stretching end and anchored end steel sleeve 3 rim of a cup, then to infusion and binding material 2 in steel sleeve 3 prestressed FRP rebar 1 and steel sleeve 3 bonds securely by rim of a cup and become entirety.First with the air in vacuum machine suction duct during perfusion, then with mudjack, binding material 2 is pressed in steel sleeve 3, to improve plumpness and the compactness of binding material 2 in steel sleeve 3.
3) as shown in Figure 6, first drive two circular troughs to lay stretching end and the circular anchor ring 7 of anchored end according to the design attitude of prestressed FRP rebar 1 at the corresponding site of concrete component 9, the size of circular trough and the degree of depth can be determined according to the size of circular anchor ring 7; Output one narrow stria again on concrete component 9 surface along the circle center line connecting direction of two circular troughs, for placing prestressed FRP rebar 1, stria width can be determined according to the size of prestressed FRP rebar 1, and wants local suitably to widen in the region of placing steel sleeve 7 and gate-type steel disc 8.
4) by step 2 pour into the binding material 2 of about 1/2nd groove depths in stria after) in the device that assembles be positioned in the groove that step 3) offers, then utilize the nut 5 in the circular anchor ring 7 of the continuous turn-knob stretching end of spanner to carry out Shi Hanzhang.In order to reduce the frictional resistance between nut 5 and screw rod 4, can in screw rod 4 termination coating lubricating oil.
5) after prestress application, reuse binding material 2 and filled up in the gap of whole hole slot, after the complete coagulation forming of colloid reaches predetermined strength, namely whole work progress has accused.
Claims (5)
1. a pre-stress FRP bar stretching and anchoring device, it is characterized in that, comprise prestressed FRP rebar (1), binding material (2), steel sleeve (3), circular steel disc (4), bolt (5), annular steel plate washer (6) and circular anchor ring (7), the openend of the seamless high-strength steel sleeve pipe (3) being positioned at stretching end and anchored end place is inserted at the two ends of described prestressed FRP rebar (1) respectively, and fix with binding material (2), described bolt (5) through the circular anchor ring of stretching end (7) ring wall and install circular anchor ring (7) in and annular steel plate washer (6) that bolt (5) is supporting, then bolt (5) screws in the reserved duct of stretching end steel sleeve (3), screw thread is processed with in duct, welding shutoff is carried out with circular steel disc (4) bottom duct, by the ring wall of the blind end of the steel sleeve (3) of anchored end through the circular anchor ring (7) of anchored end, and weld together with circular anchor ring (7).
2. pre-stress FRP bar stretching and anchoring device according to claim 1, is characterized in that, the steel sleeve (3) at stretching end place welds near the end of bolt (5) rotation that a gate-type steel disc (8) limits steel sleeve (3) in advance.
3. pre-stress FRP bar stretching and anchoring device according to claim 1, is characterized in that, described prestressed FRP rebar (1) cross sectional shape is circular, rectangle or square; Or adopt FRP plate bar to replace prestressed FRP rebar (1); Process to strengthen the adhesion stress between prestressed FRP rebar (1) and binding material (2) to prestressed FRP rebar (1) surface sandblasting or Ginding process.
4. pre-stress FRP bar stretching and anchoring device according to claim 1, is characterized in that, described steel sleeve (3) inside is processed with screw thread, and is processed in inside, openend the rim of a cup shape shunk to port.
5. pre-stress FRP bar stretching and anchoring device according to claim 1, is characterized in that, the thickness of described circular anchor ring (7) is 7 ~ 11mm, can provide enough rigidity as prestressing force load-carrying construction; The diameter of circular anchor ring (7) is 76mm, for the operation of spanner tightening nut (5) provides enough spaces; Height and its buried depth of circular anchor ring (7) adapt, and are generally 20 ~ 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520671634.XU CN204960139U (en) | 2015-09-01 | 2015-09-01 | Prestressing force FRP muscle stretch -draw anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520671634.XU CN204960139U (en) | 2015-09-01 | 2015-09-01 | Prestressing force FRP muscle stretch -draw anchor |
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| Publication Number | Publication Date |
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| CN204960139U true CN204960139U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520671634.XU Expired - Fee Related CN204960139U (en) | 2015-09-01 | 2015-09-01 | Prestressing force FRP muscle stretch -draw anchor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568646A (en) * | 2016-10-19 | 2017-04-19 | 江苏大学 | FRP reinforcement tension test apparatus and test method |
| CN107304545A (en) * | 2016-04-23 | 2017-10-31 | 辽宁工业大学 | A kind of combination set for anchoring and connecting for FRP muscle |
| CN107621441A (en) * | 2017-09-27 | 2018-01-23 | 北京工业大学 | Suitable for FRP tendons and a kind of grip device of bonding wood slip property experiment |
| CN109112977A (en) * | 2018-09-04 | 2019-01-01 | 南京林业大学 | A kind of quick prestressed reinforcement bridge beam body structure and method |
| CN111946090A (en) * | 2020-08-20 | 2020-11-17 | 上海大学 | CFRP cloth material concrete beam prestressing force reinforcing apparatus |
-
2015
- 2015-09-01 CN CN201520671634.XU patent/CN204960139U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304545A (en) * | 2016-04-23 | 2017-10-31 | 辽宁工业大学 | A kind of combination set for anchoring and connecting for FRP muscle |
| CN106568646A (en) * | 2016-10-19 | 2017-04-19 | 江苏大学 | FRP reinforcement tension test apparatus and test method |
| CN107621441A (en) * | 2017-09-27 | 2018-01-23 | 北京工业大学 | Suitable for FRP tendons and a kind of grip device of bonding wood slip property experiment |
| CN109112977A (en) * | 2018-09-04 | 2019-01-01 | 南京林业大学 | A kind of quick prestressed reinforcement bridge beam body structure and method |
| CN109112977B (en) * | 2018-09-04 | 2024-01-16 | 南京林业大学 | Rapid prestress reinforced bridge body structure and method |
| CN111946090A (en) * | 2020-08-20 | 2020-11-17 | 上海大学 | CFRP cloth material concrete beam prestressing force reinforcing apparatus |
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Legal Events
| 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: 20160113 Termination date: 20160901 |
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| CF01 | Termination of patent right due to non-payment of annual fee |