CN105926949B - The tensioning system in situ and method of integral type pre-stress fibre plate reinforcing slab plate - Google Patents
The tensioning system in situ and method of integral type pre-stress fibre plate reinforcing slab plate Download PDFInfo
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- CN105926949B CN105926949B CN201610341085.9A CN201610341085A CN105926949B CN 105926949 B CN105926949 B CN 105926949B CN 201610341085 A CN201610341085 A CN 201610341085A CN 105926949 B CN105926949 B CN 105926949B
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- plate
- hydraulic jack
- situ
- cylinder
- tensioning system
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
- E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
- E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
- E04G2023/0259—Devices specifically adapted to stress the fiber reinforced plastic elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Rod-Shaped Construction Members (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate, including the stretching end anchorage and fixing end anchorage being anchored in respectively on beam or plate, the male hydraulic jack being connected with stretching end anchorage, further include two points of clip type fixtures, cylinder with bolumn cap is welded in clip type fixture upper surface, and the sleeve being nested in outside cylinder is connected on male hydraulic jack by compression bar；Fiberboard one end is clamped by the clip type fixture of stretching end, and the other end is anchored in fixing end anchorage.The present invention is using anchorage in itself as the counterforce device of hydraulic jack, it is not necessary to the stretching force of hydraulic jack is transmitted by other device；By setting cylinder and bolumn cap to be connected with sleeve on fixture, the connection of compression bar and fixture is changed into hinged from rigid connection, can effectively solve the problem that the eccentricity issues in stretching process, ensure whole device automatic centering, reinforcement cost is saved, power transmission is direct, and antidetonation and anti-fatigue performance are good.
Description
Technical field
The present invention relates to civil engineering technical field of transportation, is specifically a kind of original position of integral type pre-stress fibre plate reinforcing slab plate
Tensioning system and method.
Background technology
Due to the influence of material aging, construction quality, nature or the factor such as artificial, existing many science of bridge building, houses
Anxious to be repaired and reinforcing, countries in the world will expend huge fund for this every year.Fiberboard has lightweight, high-strength, corrosion-resistant, by fiber
Plate is pasted onto component surface tension, can strengthen and improve the stress performance of component.Using the big fiberboard of rigidity and it is applied
Prestressing is the effective ways for solving above-mentioned engineering problem.By applying prestressing force to fiberboard, and pass through dedicated anchorage
It is anchored at concrete component both ends, it is possible to increase the rate of utilization of strength of fiberboard, can preferably improve the use of reinforced structure
The performance in stage, the development of effective control critical eigenvalue, reduces the amount of deflection of the component of structure.Prestressing technique is introduced into fiberboard outer patch
Reinforcement technique has very important meaning and effect.But existing pre-stress fibre plate tensioning system is due to anchorage and fixing device
Separation, causes tensioning system excessively heaviness and power transmission is not direct, construction is inconvenient, waste of materials；And existing apparatus presence
Eccentricity issues are easily produced during drawing, cause the tension stress of plate uneven, the premature degradation in loading procedure；In addition it is existing
Device is excessive for beam fluting area, is damaged caused by beam serious.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of integral type pre-stress fibre
The tensioning system in situ and method of plate reinforcing slab plate.
Technical solution：In order to solve the above technical problems, a kind of integral type pre-stress fibre plate reinforcing slab plate of the present invention
Tensioning system in situ, including the stretching end anchorage and fixing end anchorage being anchored in respectively on beam or plate, are connected with stretching end anchorage
Male hydraulic jack, further include two points of clip type fixtures, the cylinder with bolumn cap is welded in clip type fixture upper surface, embedding
The sleeve being placed on outside cylinder is connected on male hydraulic jack by compression bar；Fiberboard one end is pressed from both sides by the clip type of stretching end
Tool clamping, the other end are anchored in fixing end anchorage.
Wherein, stretching end anchorage is made of anchor cup, intermediate plate, and two groups of threaded holes are provided with anchor cup, and one group of hole is used for bar planting
It is anchored on beam, another group of hole is used for screw rod connection stretching end anchorage and male hydraulic jack.
Wherein, male hydraulic jack shape is convex, is connected and formed with convex steel sleeve by hydraulic jack, convex steel
Screw hole is provided with two wing plates of overcoat or so, for male hydraulic jack to be fixed on stretching end anchorage.
Wherein, two points of clip type fixtures are made of the anchor cup and intermediate plate separated up and down, and the cup that above casts anchor is connected by high-strength bolt
Connect.
Wherein, the diameter of sleeve is more than the diameter of cylinder, and the height of sleeve is identical with cylinder, and sleeve can be in cylinder and column
Rotated under the constraint of cap.
Wherein, cylinder uses with compression bar and is threadedly coupled or welds.
Wherein, fiberboard is one kind in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board, or
Carbon fiber board, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite plate.
Wherein, fixing end anchorage is made of anchor cup, intermediate plate.
A kind of method of pre-stress fibre plate reinforcing slab plate, comprises the following steps：
(1) bar planting on beam or plate to be reinforced, fixed stretching end anchorage and fixing end anchorage；
(2) fiberboard passes through the anchor cup of stretching end anchorage, and both ends are anchored in two points of clip type fixtures (4) by intermediate plate respectively
With fixing end anchorage；
(3) by high-strength bolt, male hydraulic jack is anchored on stretching end anchorage；
(4) compression bar and cylinder are connected, top-pressing jack, applies prestressing force to fiberboard；
(5) after fiber board prestress reaches requirement, intermediate plate wedging is entered to anchoring fiber plate in the anchor cup of stretching end anchorage；
(6) screw rod of two points of clip type fixtures is unloaded, achievees the purpose that prestressing force is put and opens, and remove two points of clip type fixtures
With male hydraulic jack.
Wherein, fiberboard is one kind in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board, or
Carbon fiber board, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite plate.
Beneficial effect：The tensioning system in situ and method of the integral type pre-stress fibre plate reinforcing slab plate of the present invention, have
Following beneficial effect：
1st, successfully using anchorage in itself as the counterforce device of hydraulic jack, it is not necessary to transmit liquid by other device
Press the stretching force of jack；
2nd, by setting cylinder and bolumn cap to be connected with sleeve on fixture, the connection of compression bar and fixture is changed into from rigid connection
It is hinged, it can effectively solve the problem that the eccentricity issues in stretching process, it is ensured that whole device automatic centering；
3rd, the present invention substantially reduces bearing and is taken up space, and can more be used under conditions of having space limitation, such as short beam or
Person's beam Shear Strengthening etc.；
4th, since in addition to the anchorage of both ends, other components are reusable, steel and cover board dosage are reduced, are saved
Reinforcement cost；
5th, area of slotting on beam reduces, so as to reduce the damage to former beam, and reduces reinforcement amount；
6th, power transmission is direct, and antidetonation and anti-fatigue performance are good.
Brief description of the drawings
Fig. 1 is the top view of the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate of the present invention；
Fig. 2 is the front view of the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate of the present invention；
Fig. 3 is the front view of the convex hydraulic jack of the present invention；
Fig. 4 is the lower view of the convex hydraulic jack of the present invention；
In figure：1- stretching end anchorages, 2- high-strength bolts, 3- male hydraulic jack, 4- bis- divide clip type fixture, 5- columns
Cap, 6- cylinders, 7- sleeves, 8- compression bars, 9- fiberboards, 10- fixing end anchorages, 11- beams of concretes or plate, 12-hydraulic jack
Top, 13-convex steel sleeve.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate, including anchor respectively
The stretching end anchorage 1 and fixing end anchorage 10 being fixed on beam or plate, the male hydraulic jack 3 being connected with stretching end anchorage 1, also
Including two points of clip type fixtures 4, the cylinder 6 with bolumn cap 5 is welded in 4 upper surface of clip type fixture, the set being nested in outside cylinder 6
Cylinder 7 is connected on male hydraulic jack 3 by compression bar 8；9 one end of fiberboard is clamped by the clip type fixture 4 of stretching end, separately
One end is anchored in fixing end anchorage 10.Stretching end anchorage 1 is made of anchor cup, intermediate plate, and two groups of threaded holes are provided with anchor cup, one group
Hole is used for plant anchor in beam, and another group of hole is used for screw rod connection stretching end anchorage 1 and male hydraulic jack 3.Wherein, it is convex
3 shape of shape hydraulic jack is convex, is made of hydraulic jack 12 and the connection of convex steel sleeve 13, convex steel sleeve 13 or so
Screw hole is provided with two wing plates, for male hydraulic jack 3 to be fixed on stretching end anchorage 1.Two points of clip type fixtures 4 by
Separated anchor cup and intermediate plate composition, the cup that above casts anchor are connected by high-strength bolt 2 up and down.The diameter of sleeve 7 is more than the straight of cylinder 6
Footpath, the height of sleeve 7 is identical with cylinder 6, and sleeve 7 can rotate under the constraint of cylinder 6 and bolumn cap 5.Cylinder 6 is adopted with compression bar
It is threadedly coupled or welds.Fiberboard 9 is one in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board
Kind, or carbon fiber board, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite plate.Fixing end anchorage 10
It is made of anchor cup, intermediate plate.
The present invention also provides a kind of method of pre-stress fibre plate reinforcing slab plate, comprise the following steps：
(1) bar planting on beam or plate to be reinforced, fixed stretching end anchorage 1 and fixing end anchorage 10；
(2) fiberboard 9 passes through the anchor cup of stretching end anchorage 1, and both ends are anchored in two points of clip type fixtures 4 by intermediate plate respectively
With fixing end anchorage 10；
(3) by high-strength bolt 2, male hydraulic jack 3 is anchored on stretching end anchorage 1；
(4) compression bar 8 and cylinder 6 are connected, top-pressing jack, applies prestressing force to fiberboard 9；
(5) after 9 prestressing force of fiberboard reaches requirement, intermediate plate wedging is entered to anchoring fiber in the anchor cup of stretching end anchorage 1
Plate 9；
(6) screw rod of two points of clip type fixtures 4 is unloaded, achievees the purpose that prestressing force is put and opens, and removes two points of clip types folders
Tool 4 and male hydraulic jack 3.
Wherein, fiberboard 9 is one kind in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board, or
Person's carbon fiber board, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite plate.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
- A kind of 1. tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate, it is characterised in that：Including being anchored in respectively Stretching end anchorage on beam or plate（1）With fixing end anchorage（10）, with stretching end anchorage（1）The male hydraulic jack of connection （3）, further include two points of clip type fixtures（4）, with bolumn cap（5）Cylinder（6）It is welded in clip type fixture（4）Upper surface, it is embedding It is placed on cylinder（6）Outer sleeve（7）Pass through compression bar（8）It is connected to male hydraulic jack（3）On；Fiberboard（9）One end by The clip type fixture of stretching end（4）Clamping, the other end are anchored in fixing end anchorage（10）；Stretching end anchorage（1）By anchor cup, intermediate plate Composition, and two groups of threaded holes are provided with anchor cup, one group of hole is used for plant anchor in beam, and another group of hole is used for screw rod connection tensioning Hold anchorage（1）With male hydraulic jack（3）.
- 2. the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate according to claim 1, it is characterised in that： Wherein, male hydraulic jack（3）Shape is convex, by hydraulic jack（12）With convex steel sleeve（13）Connection composition, it is convex Shaped steel overcoat（13）Screw hole is provided with the wing plate of left and right two, for by male hydraulic jack（3）It is fixed on stretching end anchorage（1） On.
- 3. the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate according to claim 1, it is characterised in that： Wherein, two points of clip type fixtures（4）It is made of the anchor cup and intermediate plate that separate up and down, the cup that above casts anchor passes through high-strength bolt（2）Connection.
- 4. the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate according to claim 1, it is characterised in that： Wherein, sleeve（7）Diameter be more than cylinder（6）Diameter, sleeve（7）Height and cylinder（6）It is identical, sleeve（7）Can be Cylinder（6）And bolumn cap（5）Constraint under rotate.
- 5. the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate according to claim 1, it is characterised in that： Wherein, cylinder（6）Used with compression bar and be threadedly coupled or weld.
- 6. the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate according to claim 1, it is characterised in that： Wherein, fiberboard（9）It is fine for one kind in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board, or carbon Tie up plate, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite plate.
- 7. the tensioning system in situ of integral type pre-stress fibre plate reinforcing slab plate according to claim 1, it is characterised in that： Wherein, fixing end anchorage（10）It is made of anchor cup, intermediate plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610341085.9A CN105926949B (en) | 2016-05-20 | 2016-05-20 | The tensioning system in situ and method of integral type pre-stress fibre plate reinforcing slab plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610341085.9A CN105926949B (en) | 2016-05-20 | 2016-05-20 | The tensioning system in situ and method of integral type pre-stress fibre plate reinforcing slab plate |
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| CN105926949A CN105926949A (en) | 2016-09-07 |
| CN105926949B true CN105926949B (en) | 2018-05-11 |
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| CN110031312B (en) * | 2019-05-27 | 2021-07-27 | 湘潭大学 | In-situ testing method for mechanical property of rusted prestressed tendon |
| 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 |
| CN113202323B (en) * | 2021-03-31 | 2022-05-24 | 河海大学 | Single-wedge-shaped-clamp-piece prestressed FRP plate tensioning and anchoring device and steel beam reinforcing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06280346A (en) * | 1993-03-25 | 1994-10-04 | Kajima Corp | Construction method for manufacture prestressed concrete member |
| CN101736912A (en) * | 2009-12-03 | 2010-06-16 | 吴智深 | Anchorage method based on technique of bonding and reinforcement outside prestressed fiber cloth |
| CN201778500U (en) * | 2010-08-16 | 2011-03-30 | 合肥工业大学 | Device for pretensioning carbon fiber board to reinforce concrete beam board |
| CN103485546A (en) * | 2013-10-08 | 2014-01-01 | 魏拥军 | Prestress tension device and tension method for carbon fiber sheets |
| CN104153584A (en) * | 2014-08-22 | 2014-11-19 | 中国铁道科学研究院铁道建筑研究所 | Tensioned anchorage device and using method of tensioned anchorage device |
| CN205804981U (en) * | 2016-05-20 | 2016-12-14 | 北京特希达科技有限公司 | The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate |
-
2016
- 2016-05-20 CN CN201610341085.9A patent/CN105926949B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06280346A (en) * | 1993-03-25 | 1994-10-04 | Kajima Corp | Construction method for manufacture prestressed concrete member |
| CN101736912A (en) * | 2009-12-03 | 2010-06-16 | 吴智深 | Anchorage method based on technique of bonding and reinforcement outside prestressed fiber cloth |
| CN201778500U (en) * | 2010-08-16 | 2011-03-30 | 合肥工业大学 | Device for pretensioning carbon fiber board to reinforce concrete beam board |
| CN103485546A (en) * | 2013-10-08 | 2014-01-01 | 魏拥军 | Prestress tension device and tension method for carbon fiber sheets |
| CN104153584A (en) * | 2014-08-22 | 2014-11-19 | 中国铁道科学研究院铁道建筑研究所 | Tensioned anchorage device and using method of tensioned anchorage device |
| CN205804981U (en) * | 2016-05-20 | 2016-12-14 | 北京特希达科技有限公司 | The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate |
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