CN105926949A - In-site tensioning system and method for reinforcing slab plate of integral prestress fiber board - Google Patents
In-site tensioning system and method for reinforcing slab plate of integral prestress fiber board Download PDFInfo
- Publication number
- CN105926949A CN105926949A CN201610341085.9A CN201610341085A CN105926949A CN 105926949 A CN105926949 A CN 105926949A CN 201610341085 A CN201610341085 A CN 201610341085A CN 105926949 A CN105926949 A CN 105926949A
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- China
- Prior art keywords
- plate
- fibre
- end anchorage
- hydraulic jack
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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)
- Reinforcement Elements For Buildings (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses an in-site tensioning system for a reinforcing slab plate of an integral prestress fiber board. The in-site tensioning system comprises a tensioning end anchorage device, a fixed end anchorage device, a convex hydraulic jack and a two-section clip type clamp, wherein the tensioning end anchorage device and the fixed end anchorage device are anchored on a beam or a plate, and the convex hydraulic jack is connected with the tensioning end anchorage device. A cylinder with a cylinder cap is welded to the upper surface of the clip type clamp. A sleeve which is arranged outside the cylinder in a sleeving mode is connected to the convex hydraulic jack through a jacking rod. One end of the fiber board is clamped by the clip type clamp of the tensioning end, and the other end of the fiber board is anchored to the fixed end anchorage device. According to the in-site tensioning system, the anchorage devices serve as counter force devices of the hydraulic jack, and no additional device is needed to transfer the tensioning force of the hydraulic jack; and the cylinder and the cylinder cap are arranged on the clamp and connected with the sleeve, the connection mode between the jacking rod and the clamp is changed from rigid connection into hinged connection, the eccentricity problem in the tensioning process can be effectively solved, automatic centering of the whole device is guaranteed, the reinforcing cost is reduced, force transferring is direct, and the anti-seismic performance and fatigue resistance are good.
Description
Technical field
The present invention relates to civil engineering technical field of transportation, the original position of a kind of integral type pre-stress fibre plate reinforcing slab plate is opened
Pull system and method.
Background technology
Due to material aging, construction quality, nature or the impact of the factor such as artificial, existing a lot of sciences of bridge building, house are anxious
To be repaired and reinforce, countries in the world will expend huge fund every year for this.Fibre board has lightweight, high-strength, corrosion-resistant, by fibre
Dimension plate is pasted onto component surface tension, can strengthen and improve the stress performance of component.Use the big fibre board of rigidity right
Its Shi Hanzhang is the effective ways solving above-mentioned engineering problem.By to fibre board Shi Hanzhang, and by special
Anchorage be anchored at concrete component two ends, it is possible to increase the rate of utilization of strength of fibre board, can preferably improve and be reinforced knot
The performance of the operational phase of structure, the development of effective control critical eigenvalue, reduces the amount of deflection of the component of structure.Prestressing technique is drawn
Enter fibre board external application reinforcement technique and have very important meaning and effect.But pre existing stress fiber plate tensioning system due to
Anchorage separates with fixing device, causes tensioning system excessively heavy and power transmission is not direct, construction inconvenience, waste material；
And existing apparatus all exists and easily produces eccentricity issues in stretching process, the tension stress causing plate is uneven, is loading
Premature degradation in journey；Additionally existing apparatus is excessive for beam fluting area, and the damage causing beam is serious.
Summary 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 plate
The original position tensioning system of reinforcing slab plate and method.
Technical scheme: for solving above-mentioned technical problem, a kind of integral type pre-stress fibre plate reinforcing slab plate of the present invention former
Position tensioning system, including the stretching end anchorage being anchored in respectively on beam or plate and fixing end anchorage, is connected with stretching end anchorage
Male hydraulic jack, also include two points of clip type fixtures, the cylinder with cap is welded in clip type fixture upper surface,
The sleeve being nested in outside cylinder is connected on male hydraulic jack by compression bar；Fibre board one end is by the intermediate plate of stretching end
Formula holder, the other end is anchored in fixing end anchorage.
Wherein, stretching end anchorage is made up of anchor cup, intermediate plate, and has two groups of screwed holes on anchor cup, and one group of hole is for bar planting
Being anchored on beam, another group hole connects stretching end anchorage and male hydraulic jack for screw rod.
Wherein, male hydraulic jack is shaped as convex, hydraulic jack and convex steel sleeve connect and form, convex steel
Screw is had on two wing plates, for male hydraulic jack is fixed on stretching end anchorage about overcoat.
Wherein, two points of clip type fixtures are made up of upper and lower separate anchor cup and intermediate plate, and the cup that above casts anchor is connected by high-strength bolt.
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 at cylinder and post
Rotate under the constraint of cap.
Wherein, cylinder uses threaded with compression bar or welds.
Wherein, fibre board is the one 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.
Wherein, fixing end anchorage is made up 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 to be reinforced or plate, fixing stretching end anchorage and fixing end anchorage；
(2) fibre board is anchored in two points of clip type fixtures (4) through the anchor cup of stretching end anchorage, two ends respectively by intermediate plate
With fixing end anchorage；
(3) by high-strength bolt, male hydraulic jack is anchored on stretching end anchorage；
(4) connecting compression bar and cylinder, top-pressing jack, to fibre board Shi Hanzhang；
(5) after fibre board prestressing force reaches requirement, intermediate plate wedging is entered anchoring fiber plate in the anchor cup of stretching end anchorage；
(6) unload the screw rod of two points of clip type fixtures, reach prestressing force and put the purpose opened, and remove two points of clip types folders
Tool and male hydraulic jack.
Wherein, fibre board is the one 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.
Beneficial effect: the original position tensioning system of the integral type pre-stress fibre plate reinforcing slab plate of the present invention and method, have with
Lower beneficial effect:
1, successfully using anchorage itself as the counterforce device of hydraulic jack, it is not necessary to rely on other device transmission liquid
The stretching force of pressure jack；
2, it is connected with sleeve with cap by arranging cylinder on fixture, the connection of compression bar and fixture is become from just connecing
Hinged, it is possible to effectively to solve the eccentricity issues in stretching process, it is ensured that whole device automatic centering；
3, the present invention substantially reduces bearing and is taken up space, and more can use under conditions of limiting there being space, such as short beam or
Person's beam Shear Strengthening etc.；
4, owing to, in addition to the anchorage of two ends, other components are the most reusable, steel and cover plate consumption are reduced, joint
About reinforcement cost；
5, area of slotting on beam reduces, thus reduces the damage to former beam, and reduces reinforcement amount；
6, power transmission is direct, and antidetonation and anti-fatigue performance are good.
Accompanying drawing explanation
Fig. 1 is the top view of the original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate of the present invention；
Fig. 2 is the front view of the original position tensioning system 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 anchorage, 2-high-strength bolt, 3-male hydraulic jack, bis-points of clip type fixtures of 4-, 5-cap,
6-cylinder, 7-sleeve, 8-compression bar, 9-fibre board, 10-fixing end anchorage, 11-beams of concrete or plate, 12 hydraulic pressure thousand
Jin top, 13 convex steel sleeves.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As shown in Figure 1 and Figure 2, the original position tensioning system of a kind of integral type pre-stress fibre plate reinforcing slab plate, including respectively
The stretching end anchorage 1 being anchored on beam or plate and fixing end anchorage 10, very heavy with the male hydraulic that stretching end anchorage 1 is connected
Top 3, also includes two points of clip type fixtures 4, and the cylinder 6 with cap 5 is welded in clip type fixture 4 upper surface, embedding
The sleeve 7 being placed on outside cylinder 6 is connected on male hydraulic jack 3 by compression bar 8；Fibre board 9 one end is by stretch-draw
The clip type fixture 4 of end clamps, and the other end is anchored in fixing end anchorage 10.Stretching end anchorage 1 is made up of anchor cup, intermediate plate,
And on anchor cup, having two groups of screwed holes, one group of hole is for plant anchor in beam, and another group hole connects stretching end for screw rod
Anchorage 1 and male hydraulic jack 3.Wherein, male hydraulic jack 3 is shaped as convex, by hydraulic jack 12
Connect composition with convex steel sleeve 13, about 13 two wing plates of convex steel sleeve have screw, for by male hydraulic
Jack 3 is fixed on stretching end anchorage 1.Two points of clip type fixtures 4 are made up of upper and lower separate anchor cup and intermediate plate, on
The cup that casts anchor is connected by high-strength bolt 2.The diameter of sleeve 7 is more than the diameter of cylinder 6, the height of sleeve 7 and cylinder 6
Identical, sleeve 7 can rotate under the constraint of cylinder 6 and cap 5.Cylinder 6 and compression bar use threaded or
Welding.Fibre board 9 is the one 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.Fixing end anchorage 10
It is made up of anchor cup, intermediate plate.
The present invention also provides for a kind of method of pre-stress fibre plate reinforcing slab plate, comprises the following steps:
(1) bar planting on beam to be reinforced or plate, fixing stretching end anchorage 1 and fixing end anchorage 10；
(2) fibre board 9 is anchored in two points of clip types respectively by intermediate plate presss from both sides through the anchor cup of stretching end anchorage 1, two ends
Tool 4 and fixing end anchorage 10；
(3) by high-strength bolt 2, male hydraulic jack 3 is anchored on stretching end anchorage 1；
(4) connecting compression bar 8 and cylinder 6, top-pressing jack, to fibre board 9 Shi Hanzhang；
(5) after fibre board 9 prestressing force reaches requirement, intermediate plate wedging is entered fixing fibre in the anchor cup of stretching end anchorage 1
Dimension plate 9；
(6) unload the screw rod of two points of clip type fixtures 4, reach prestressing force and put the purpose opened, and remove two points of clip types
Fixture 4 and male hydraulic jack 3.
Wherein, fibre board 9 is the one 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.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also
Should be regarded as protection scope of the present invention.
Claims (10)
1. the original position tensioning system of an integral type pre-stress fibre plate reinforcing slab plate, it is characterised in that: include anchor respectively
The stretching end anchorage (1) being fixed on beam or plate and fixing end anchorage (10), the convex being connected with stretching end anchorage (1)
Hydraulic jack (3), also includes two points of clip type fixtures (4), and the cylinder (6) with cap (5) is welded in intermediate plate
Formula fixture (4) upper surface, is nested in cylinder (6) sleeve (7) outward and is connected to male hydraulic by compression bar (8)
On jack (3)；Fibre board (9) one end is clamped by the clip type fixture (4) of stretching end, and the other end is anchored in solid
Fixed end anchorage (10).
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, stretching end anchorage (1) is made up of anchor cup, intermediate plate, and has two groups of screwed holes on anchor cup, one group of hole
For plant anchor in beam, another group hole connects stretching end anchorage (1) and male hydraulic jack (3) for screw rod.
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, male hydraulic jack (3) is shaped as convex, by hydraulic jack (12) and convex steel sleeve (13)
Connect composition, two wing plates in convex steel sleeve (13) left and right have screw, for by male hydraulic jack (3)
It is fixed on stretching end anchorage (1).
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, two points of clip type fixtures (4) are made up of upper and lower separate anchor cup and intermediate plate, and the cup that above casts anchor is by high-strength
Bolt (2) connects.
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, the diameter of sleeve (7) is more than the diameter of cylinder (6), the height of sleeve (7) and cylinder (6) phase
With, sleeve (7) can rotate under the constraint of cylinder (6) and cap (5).
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, cylinder (6) uses threaded with compression bar or welds.
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, fibre board (9) is in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board
One, or carbon fiber board, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite plate.
The original position tensioning system of integral type pre-stress fibre plate reinforcing slab plate the most according to claim 1, its feature
Being: wherein, fixing end anchorage (10) is made up of anchor cup, intermediate plate.
9. the method for a pre-stress fibre plate reinforcing slab plate, it is characterised in that: comprise the following steps:
(1) bar planting on reinforcement or plate is being treated, fixing stretching end anchorage (1) and fixing end anchorage (10)；
(2) fibre board (9) is anchored in two points of folders through the anchor cup of stretching end anchorage (1), two ends respectively by intermediate plate
Chip fixture (4) and fixing end anchorage (10)；
(3) by high-strength bolt (2), male hydraulic jack (3) is anchored on stretching end anchorage (1)；
(4) connecting compression bar (8) and cylinder (6), top-pressing jack, to fibre board (9) Shi Hanzhang；
(5) after fibre board (9) prestressing force reaches requirement, intermediate plate wedging is entered in the anchor cup of stretching end anchorage (1)
Anchoring fiber plate (9)；
(6) unload the screw rod of two points of clip type fixtures (4), reach prestressing force and put the purpose opened, and remove two points of intermediate plates
Formula fixture (4) and male hydraulic jack (3).
The method of a kind of pre-stress fibre plate reinforcing slab plate the most according to claim 9, it is characterised in that: wherein,
Fibre board (9) is the one in carbon fiber board, basalt fibre plate, glass mat, aramid fiber board, or carbon
Fibre board, basalt fibre plate, glass mat, aramid fiber board and steel fibre composite 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 true CN105926949A (en) | 2016-09-07 |
| CN105926949B CN105926949B (en) | 2018-05-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031312A (en) * | 2019-05-27 | 2019-07-19 | 湘潭大学 | A kind of corrosion presstressed reinforcing steel mechanical property in-situ testing device and method |
| 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 |
| CN113202323A (en) * | 2021-03-31 | 2021-08-03 | 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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| 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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2016
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031312A (en) * | 2019-05-27 | 2019-07-19 | 湘潭大学 | A kind of corrosion presstressed reinforcing steel mechanical property in-situ testing device and method |
| 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 |
| CN113202323A (en) * | 2021-03-31 | 2021-08-03 | 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 | Publication date |
|---|---|
| CN105926949B (en) | 2018-05-11 |
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