CN212359199U - Reverse stretch-draw anchor subassembly of prestressing force FRP board - Google Patents
Reverse stretch-draw anchor subassembly of prestressing force FRP board Download PDFInfo
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- CN212359199U CN212359199U CN202020118568.4U CN202020118568U CN212359199U CN 212359199 U CN212359199 U CN 212359199U CN 202020118568 U CN202020118568 U CN 202020118568U CN 212359199 U CN212359199 U CN 212359199U
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Abstract
The utility model discloses a reverse stretch-draw anchor subassembly of prestressing force FRP board, this subassembly includes stretch-draw end subassembly and stiff end subassembly, stretch-draw end subassembly includes the stretch-draw end pedestal, stretch-draw end ground tackle, pedestal annex, the ground tackle annex, the counter-force roof, stretch-draw screw rod and punching jack, the stretch-draw end pedestal comprises bottom plate and vertical roof, stretch-draw end pedestal and stretch-draw end ground tackle pass through set screw to be connected, the pedestal annex links firmly below the stretch-draw end pedestal, the ground tackle annex links firmly below the stretch-draw end ground tackle, stretch-draw screw rod passes the center of pedestal annex, the center of ground tackle annex in proper order, pass punching jack and counter-force roof and link together again, the punching jack exerts prestressing force for FRP board through promoting stretch-draw end ground tackle and ground tackle annex; the fixed end assembly comprises a fixed end pedestal and a fixed end anchorage. The assembly can uniformly apply prestress to the FRP plate, reduces the construction space, and is simple in structure and convenient to apply in practice.
Description
Technical Field
The utility model relates to an anchor subassembly, more specifically relates to a reverse stretch-draw anchor subassembly of prestressing force FRP board.
Background
The Fiber Reinforced Plastic (FRP) has the advantages of light weight, high strength, good durability, convenient construction and the like, and the externally-adhered FRP plate is widely applied to engineering structure reinforcement. Test and engineering practice results show that FRP stripping failure often occurs only by sticking the FRP plate on the surface of the structure for reinforcement, and meanwhile, due to reasons such as secondary stress, the reinforcement effect is very limited, the high-strength characteristic of the FRP cannot be fully exerted, and the FRP belongs to passive reinforcement. The external prestress anchoring technology and the FRP reinforcing technology are combined, so that the high-strength characteristic of an FRP material can be fully exerted, the utilization rate of FRP is improved, the problem of peeling of the end part of an FRP plate can be well solved, the reinforcing effect is improved, and the method belongs to active reinforcement. The conventional prestressed FRP plate reinforcing technology mostly adopts a forward tensioning method, tensioning platforms are required to be arranged at two ends of a beam to be reinforced or jack baffles are required to be installed to complete tensioning work, the method needs a large operation space, actual reinforcing length is reduced, and meanwhile, construction effect is limited due to limited space in application of actual engineering. Patent document No. CN106193643A discloses a prestressed CFRP plate tensioning and anchoring device for reinforcing steel beams and composite beams, the jack of the anchoring device is located outside the tensioning device, which can reduce the construction space, but the device adopts double-jack construction, uneven tensioning due to uneven force of jacks at both sides is easily generated in the tensioning process, resulting in difficulty in achieving the expected effect of the applied prestress; in addition, the device has wide width, complex structure and large steel consumption.
Disclosure of Invention
Utility model purpose: the utility model aims at providing a can be to the balanced prestressing force that applys of FRP board, save construction space's the reverse stretch-draw anchor subassembly of prestressing force FRP board.
The technical scheme is as follows: the utility model relates to a reverse stretch-draw anchor subassembly of prestressing force FRP board, including stretch-draw end subassembly and stiff end subassembly, stretch-draw end subassembly includes the stretch-draw end pedestal, stretch-draw end ground tackle, pedestal annex, ground tackle annex, the counter-force roof, stretch-draw screw rod and punching jack, the stretch-draw end pedestal comprises bottom plate and vertical roof, and is equipped with the stiffening rib, stretch-draw end pedestal and stretch-draw end ground tackle pass through set screw and connect, the pedestal annex links firmly below the stretch-draw end pedestal, the ground tackle annex links firmly below the stretch-draw end ground tackle, stretch-draw screw rod passes the center of pedestal annex, ground tackle annex in proper order, pass again the punching jack and link together with the counter-force roof, the punching jack exerts prestressing force for FRP board through promoting stretch-draw end ground tackle and ground tackle annex; the fixed end assembly comprises a fixed end pedestal and a fixed end anchorage.
The base attachment piece is provided with a first attachment internal thread hole with the same diameter as the first internal thread hole on the tensioning end base; the tensioning end anchorage device consists of an anchor cup and a wedge-shaped clamping piece, a pair of second circular pore channels corresponding to the first circular pore channels on the tensioning end pedestal are symmetrically arranged on two sides of the anchor cup, a group of second internal thread holes are arranged on the bottom surface of the tensioning end anchorage device, and second additional internal thread holes with the same diameter as the second internal thread holes on the tensioning end anchorage device are arranged at the corresponding positions of the anchorage device additional pieces; the center of the pedestal additional part is provided with a first tensioning pore channel, the center of the anchorage device additional part is provided with a sliding pore channel corresponding to a first tensioning pore channel on the pedestal additional part, the center of the counter-force top plate is provided with a second tensioning pore channel corresponding to the first tensioning pore channel and the sliding pore channel, two ends of the tensioning screw rod are threaded sections, the middle of the tensioning screw rod is a smooth section, two ends of the tensioning screw rod are respectively fixed with the first tensioning pore channel and the second tensioning pore channel by utilizing a first counter-force nut and a second counter-force nut, the first tensioning pore channel and the second tensioning pore channel are internal threaded pore channels, and the pedestal of the tensioning end; the fixed end pedestal and the fixed end anchorage are connected through a fixed end fixing screw rod, the fixed end pedestal is composed of a fixed end bottom plate and a fixed end vertical top plate and is provided with a fixed end reinforcing rib, and the fixed end anchorage is composed of a fixed end anchorage cup and a fixed end wedge-shaped clamping piece.
Has the advantages that: compared with the prior art, the utility model, its advantage is: 1. the uniform tensile force can be applied to the FRP plate, and the prestress can be uniformly applied; 2. the jack is positioned at the inner side of the anchorage device, so that the construction space is enlarged, and the jack is convenient to use in practical application; 3. the tensioning anchor assembly is light and convenient, and the steel consumption is less.
Drawings
Fig. 1 is a front view of the structure of the present invention;
fig. 2 is a bottom view of the structure of the present invention;
FIG. 3 is a schematic view of the structure of the tension end pedestal;
FIG. 4 is a schematic view of a fixed end pedestal structure;
FIG. 5 is a schematic view of a tensioning end anchor configuration;
FIG. 6 is a schematic view of a fixed end anchor construction;
FIG. 7 is a schematic view of a stand attachment;
FIG. 8 is a schematic view of an anchor attachment configuration;
FIG. 9 is a schematic view of a reaction top plate configuration;
FIG. 10 is a schematic view of the FRP panel and beam structure after completion of tensioning.
Detailed Description
As shown in fig. 1-9, the reverse tensioning anchoring component of the prestressed FRP plate comprises a tensioning end component and a fixed end component, the tensioning end component comprises a tensioning end pedestal 2, a tensioning end anchorage device 3, a pedestal attachment 4, an anchorage attachment 5, a counter-force top plate 6, a tensioning screw 8 and a center-penetrating jack 9, the tensioning end pedestal 2 consists of a bottom plate 2-1 and a vertical top plate 2-2, 3 reinforcing ribs 2-3 are also arranged, a group of first circular pore channels are arranged on the side surface of the vertical top plate 2-2 of the tensioning end pedestal 2, a group of first internal threaded holes are arranged on the bottom surface of the vertical top plate 2-2, the pedestal attachment 4 is provided with first additional internal threaded holes with the same diameter as the first internal threaded holes on the tensioning end pedestal 2, the pedestal attachment 4 is fixedly connected below the tensioning end pedestal 2 through bolts, the tensioning end anchorage device 3 consists of an anchor cup 3-1 and a wedge-shaped clamping piece 3-2, the FRP plate 1 is clamped by mechanical friction force generated by extrusion between an anchor cup 3-1 and a wedge-shaped clamping piece 3-2, a pair of second circular pore channels corresponding to the first circular pore channels on a tensioning end pedestal 2 are symmetrically arranged on two sides of the anchor cup 3-1, a group of second internal thread holes are arranged on the bottom surface of a tensioning end anchorage device 3, second additional internal thread holes with the same diameter as the second internal thread holes on the tensioning end anchorage device 3 are arranged at the corresponding positions of an anchorage device additional piece 5, the tensioning end pedestal 2 and the tensioning end anchorage device 3 are connected by a tensioning end fixing screw 7, the opposite positions are fixed by nuts, the anchorage device additional piece 5 is fixedly connected below the tensioning end anchorage device 3 by bolts, a first tensioning pore channel is arranged at the center of the pedestal additional piece 4, a sliding pore channel corresponding to the first tensioning pore channel on the pedestal additional piece 4 is arranged at the center of the anchorage device additional piece 5, and a first tensioning pore channel is arranged at the center of a top plate, The tensioning screw 8 sequentially passes through the first tensioning channel of the pedestal additional part 4 and the sliding channel of the anchorage device additional part 5 and then passes through the core-penetrating jack 9 to be connected with the second tensioning channel of the counter-force top plate 6, and is fixed with the first tensioning channel and the second tensioning channel respectively by utilizing a first counter-force nut 12 and a second counter-force nut 13, the core-penetrating jack 9 applies prestress to the FRP plate 1 by pushing the tensioning end anchorage device 3 and the anchorage device additional part 5, and the core-penetrating jack 9 is a single small-sized core-penetrating hydraulic jack; the fixed end component comprises a fixed end pedestal 10 and a fixed end anchorage 11;
the fixed end pedestal 10 is connected with the fixed end anchorage 11 through a fixed end fixing screw 15, relative position fixing is carried out by utilizing a nut, the fixed end anchorage 11 consists of a fixed end anchorage cup 11-1 and a fixed end wedge-shaped clamping piece 11-2, the fixed end pedestal 10 consists of a fixed end bottom plate 10-1 and a fixed end vertical top plate 10-2, and 3 fixed end reinforcing ribs 10-3 are arranged.
When in use, firstly, the tensioning end pedestal 2 and the fixed end pedestal 10 are fixed on the lower flange of an H-shaped steel beam to be reinforced by utilizing a high-strength bolt, the pedestal attachment 4 and the anchorage attachment 5 are respectively fixed on the tensioning end pedestal 2 and the tensioning end anchorage 3 by utilizing bolts, two ends of the FRP plate 1 are respectively wedged into the anchor cup 3-1 and the fixed end anchor cup 11-1 by utilizing the wedge-shaped clamping piece 3-2 and the fixed end wedge-shaped clamping piece 11-2, the FRP plate 1 is clamped by depending on mechanical friction force, the fixed end anchorage 11 is fixedly connected with the fixed end pedestal 10 by utilizing the fixed end fixing screw 15, the tensioning end fixing screw 7 is fixed on the tensioning end anchorage 3 by utilizing a nut, the relative positions of the tensioning end pedestal 2 and the tensioning end anchorage 3 are fixed, the tensioning end fixing screw 7 passes through the tensioning end pedestal 2, the tail end is sleeved with the fixing nut 14, the tensioning screw 8 passes through a sliding pore channel of the anchorage attachment 5 and is screwed into a first tensioning pore, the first counter-force nut 12 is screwed on the outer side of the pedestal attachment 4, then the penetrating jack 9 and the counter-force top plate 6 sequentially penetrate through the tensioning screw 8, the second counter-force nut 13 is screwed on the outer side of the counter-force top plate 6, the penetrating jack 9 is started to push the anchor attachment 5 to drive the tensioning end anchor 3 to move, pretension is applied to the FRP plate 1, the applied jacking force is monitored by using a monitor, when the FRP plate 1 reaches a tensioning design value due to the applied jacking force, the tail end fixing nut 14 of the tensioning end fixing screw 7 is locked, the penetrating jack 9 is controlled to stop oil supply, the pedestal attachment 4, the anchor attachment 5, the counter-force top plate 6 and the penetrating jack 9 are taken down after the jacking force is released, and the structural schematic diagram of the FRP plate and the beam after tensioning is finished is shown in fig. 10.
Claims (8)
1. The utility model provides a reverse stretch-draw anchor subassembly of prestressing force FRP board, a serial communication port, including stretch-draw end subassembly and stiff end subassembly, stretch-draw end subassembly includes stretch-draw end pedestal (2), stretch-draw end ground tackle (3), pedestal attachment (4), ground tackle attachment (5), counter-force roof (6), stretch-draw screw rod (8) and punching jack (9), stretch-draw end pedestal (2) comprise bottom plate (2-1) and vertical roof (2-2), and are equipped with stiffening rib (2-3), stretch-draw end pedestal (2) and stretch-draw end ground tackle (3) are connected through stretch-draw end clamping screw (7), pedestal attachment (4) link firmly in stretch-draw end pedestal (2) below, ground tackle attachment (5) link firmly in stretch-draw end ground tackle (3) below, stretch-draw screw rod (8) pass in proper order additional (4), The center of the anchorage device additional piece (5) passes through the center-penetrating jack (9) to be connected with the reaction top plate (6), and the center-penetrating jack (9) applies prestress to the FRP plate (1) by pushing the tensioning end anchorage device (3) and the anchorage device additional piece (5); the fixed end assembly comprises a fixed end pedestal (10) and a fixed end anchor (11).
2. Prestressed FRP panel counter-tensioning anchoring assembly according to claim 1, characterized in that said piercing jack (9) is a single small piercing hydraulic jack.
3. The prestressed FRP panel counter-tensioning anchoring assembly according to claim 1, wherein the tensioning end pedestal (2) is provided with a set of first circular holes on the side surface of the vertical top plate (2-2), a set of first internal threaded holes on the bottom surface of the vertical top plate (2-2), and the pedestal attachment (4) is provided with first additional internal threaded holes having the same diameter as the first internal threaded holes on the tensioning end pedestal (2).
4. The prestressed FRP plate reverse tensioning anchoring assembly according to claim 3, wherein the tensioning end anchorage device (3) consists of an anchorage cup (3-1) and a wedge-shaped clamping piece (3-2), a pair of second circular pore channels corresponding to the first circular pore channels on the tensioning end pedestal (2) are symmetrically formed in two sides of the anchorage cup (3-1), a group of second internal thread holes are formed in the bottom surface of the tensioning end anchorage device (3), and second additional internal thread holes with the same diameter as the second internal thread holes on the tensioning end anchorage device (3) are formed in the corresponding positions of the anchorage device additional pieces (5).
5. The prestressed FRP plate reverse tensioning anchoring assembly according to claim 1, wherein a first tensioning hole channel is formed in the center of the pedestal attachment (4), a sliding hole channel corresponding to the first tensioning hole channel on the pedestal attachment (4) is formed in the center of the anchor attachment (5), a second tensioning hole channel corresponding to the first tensioning hole channel and the sliding hole channel is formed in the center of the reaction top plate (6), two ends of the tensioning screw rod (8) are threaded sections, the middle of the tensioning screw rod is a smooth section, and the tensioning screw rod is respectively fixed with the first tensioning hole channel and the second tensioning hole channel by using a first reaction nut (12) and a second reaction nut (13).
6. The prestressed FRP panel counter-tensioned anchoring assembly of claim 5, wherein the first and second tensioned apertures are internally threaded apertures.
7. The prestressed FRP panel reverse-tension anchoring assembly as claimed in claim 1, wherein said tension end platform (2) is provided with reinforcing ribs (2-3).
8. The prestressed FRP plate reverse-tension anchoring assembly according to claim 1, wherein the fixed end pedestal (10) and the fixed end anchor (11) are connected by a fixed end fixing screw (15), the fixed end pedestal is composed of a fixed end bottom plate (10-1) and a fixed end vertical top plate (10-2) and is provided with a fixed end reinforcing rib (10-3), and the fixed end anchor (11) is composed of a fixed end anchor cup (11-1) and a fixed end wedge-shaped clamping piece (11-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020118568.4U CN212359199U (en) | 2020-01-19 | 2020-01-19 | Reverse stretch-draw anchor subassembly of prestressing force FRP board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020118568.4U CN212359199U (en) | 2020-01-19 | 2020-01-19 | Reverse stretch-draw anchor subassembly of prestressing force FRP board |
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| CN212359199U true CN212359199U (en) | 2021-01-15 |
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| CN202020118568.4U Active CN212359199U (en) | 2020-01-19 | 2020-01-19 | Reverse stretch-draw anchor subassembly of prestressing force FRP board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155783A (en) * | 2020-01-19 | 2020-05-15 | 河海大学 | Prestressed FRP plate reverse tensioning anchoring assembly and use method thereof |
| CN111155784A (en) * | 2020-01-19 | 2020-05-15 | 河海大学 | Prestressed FRP plate reverse tensioning anchoring assembly and use method thereof |
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2020
- 2020-01-19 CN CN202020118568.4U patent/CN212359199U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155783A (en) * | 2020-01-19 | 2020-05-15 | 河海大学 | Prestressed FRP plate reverse tensioning anchoring assembly and use method thereof |
| CN111155784A (en) * | 2020-01-19 | 2020-05-15 | 河海大学 | Prestressed FRP plate reverse tensioning anchoring assembly and use method thereof |
| CN111155783B (en) * | 2020-01-19 | 2024-02-23 | 河海大学 | Prestressed FRP plate reverse tensioning anchor assembly and application method thereof |
| CN111155784B (en) * | 2020-01-19 | 2024-03-26 | 河海大学 | Prestressed FRP plate reverse tensioning anchor assembly and application method thereof |
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