CN108843037A - A kind of prestressed fiber cloth reinforced girder tensioning anchor and its construction method - Google Patents
A kind of prestressed fiber cloth reinforced girder tensioning anchor and its construction method Download PDFInfo
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- CN108843037A CN108843037A CN201810582805.XA CN201810582805A CN108843037A CN 108843037 A CN108843037 A CN 108843037A CN 201810582805 A CN201810582805 A CN 201810582805A CN 108843037 A CN108843037 A CN 108843037A
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- fiber cloth
- end anchorage
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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
- 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
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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
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Abstract
The invention discloses a kind of prestressed fiber cloth reinforced girder tensioning anchor and its construction methods.The device includes hold-down support, fixing end anchorage, stretching end anchorage, intermediate plate, anchoring short screw, anchoring long bolt, chemical bolt, fiber cloth, prestress application frame and jack.Hold-down support, fixation and stretching end anchorage are cuboid.Hold-down support is fixed by chemical anchor bolts and reinforcement.Fixed and stretching end anchorage passes through respectively anchors short, long bolt and hold-down support connection.There is the rectangle straight joint for passing through fiber cloth on fixing end anchorage.There is the wedged hole for being inserted into intermediate plate on stretching end anchorage, intermediate plate is wedged in wedged hole, realizes the clamping to fiber cloth.Construction procedure is first to install anchorage, reassembles hold-down support and fixed anchorage, last prestressed apply frame and jack, implement stretch-draw anchor.Apparatus of the present invention are structurally reasonable simple, easy to operate, can reuse, the prestressing force of application is larger.
Description
Technical field
The present invention relates to a kind of stretching and anchoring device of pre-stressed fiber cloth and its construction method, especially a kind of prestressing force
Fiber cloth reinforced girder tensioning anchor and its construction method can be used to reinforced concrete structure, belong to the engineering that builds a bridge
Field of reinforcement.
Background technique
Fiber composite reinforcing material is high, small in size, anticorrosive etc. with unidirectional tensile strength height, light weight, elasticity modulus
Feature, it is little to original structure member section, load increase after reinforcing, therefore it is widely used in concrete structure reinforcement
In.In the prior art, less for the stretching and anchoring device of prestressed fiber cloth reinforced reinforcing bar and prestressed concrete and application
Prestressing force it is smaller.
Publication No. is that the patent application technology of 104631851 A of CN discloses a kind of " pre-stressed carbon fiber plate tensioning equipment
And its method for pre-stressed carbon fiber plate tensioning ", which is reinforced with following deficiency for carbon fiber board：1, due to carbon
The characteristic of fibre board material itself make reinforce after between carbon fiber board and strenthening member there are biggish gap, the pre- of application answers
The anchor bolt that power only relies on both ends is transferred to component, and globality is poor；2, the device to the tensioning equipment of carbon fiber board more
Cumbersome, stretching end screw rod is longer, and prominent in body structure surface after the completion of reinforcing, influences the beauty of structure after reinforcing.
Summary of the invention
The purpose of the present invention is to provide a kind of prestressed fiber cloth reinforced girder tensioning anchors suitable for concrete beam strengthening
It is fixedly mounted with and sets and its construction method, which uses strand tapered anchorage, and structure stress is more reasonable, can apply biggish pre- answer
Power makes full use of the performance of fiber cloth.
To solve the above problems, the technical solution adopted by the present invention is that：A kind of prestressed fiber cloth reinforced girder tensioning anchoring
Device, including two hold-down supports, a fixing end anchorage, a stretching end anchorage, two panels intermediate plate, two anchoring short screws,
Two anchoring long bolts, four chemical bolts, fiber cloth, prestress application frame and jack.
The hold-down support is cuboid, and thereon there are two the circular through hole for installing chemical bolt, two sides respectively have
One round anchor hole I for being connected with stretching end anchorage or fixing end anchorage.
The fixing end anchorage is cuboid, and respectively there is a round anchor hole II for being connected with hold-down support at both ends,
Centre is equipped with the rectangle straight joint of 2mm wide.
The stretching end anchorage is cuboid, and respectively there is a stretching end anchorage anchor for being connected with hold-down support at both ends
Hole；Stretching end anchorage anchor hole is made of hexagon anchor hole and circle anchor hole III, hole depth and the anchoring long bolt of hexagon anchor hole
The consistency of thickness of anchor head；There is a wedged hole for being used to be inserted into intermediate plate among stretching end anchorage.
The intermediate plate is wedge block, clamps fiber cloth among two panels intermediate plate, is wedged the wedged hole in stretching end anchorage
In, realize the clamping to fiber cloth.
The prestress application frame is door-shaped frame, there is the screw hole I for being connected with jack thereon；Jack is thereon
There is the screw hole II for being connected with prestress application frame, jack front end is piston.
In the present invention construction method of prestressed fiber cloth reinforced girder tensioning anchor the specific steps are：
The first step installs anchorage
The length that required fiber cloth is cut according to the length of strenthening member passes through one end of fiber cloth in fixing end anchorage
Rectangle straight joint, then it is aligned the both ends of fiber cloth fiber cloth doubling, the fiber cloth after both ends are aligned is by stretching end anchorage
The osculum of wedged hole penetrate great Kou and be pierced by, pass through stretching end anchorage；Side and fiber cloth in two panels intermediate plate gripping fibers cloth
After fiber cloth adhesive glue is uniformly smeared at both ends, the both ends of two panels intermediate plate clamped fibers cloth are squeezed into stretching end anchorage
Wedged hole in, complete clamping to fiber cloth；First by fibre cloth winding around stretching end anchorage one week, then fiber cloth is fastened
End anchorage one week, when winding, ensure to wrap between fiber cloth and fixing end anchorage and stretching end anchorage, to fiber cloth adhesive glue glue
After body solidification, the installation of fiber cloth and stretching end anchorage and fixing end anchorage is completed.
Second step assembles hold-down support and fixed anchorage
It is drilled four chemical bolt holes for installing two hold-down supports on the reinforcing position to reinforcement, is implanted into wherein
Chemical bolt；Chemical bolt is passed through into the circular through hole on hold-down support, tightens the nut on chemical bolt for two fixed
Seat is fixed to reinforcement surface；The round anchor hole II of fixing end anchorage is aligned with the round anchor hole I of hold-down support, by two anchors
Gu short screw respectively penetrates the round anchor hole I of hold-down support and the round anchor hole II of fixing end anchorage, while tightening two anchorings
Nut on short screw completes the anchoring of fixing end anchorage and hold-down support；By the round anchor hole III at stretching end anchorage both ends with
The round anchor hole I of hold-down support two sides is aligned；Two anchoring long bolts are each passed through to the anchor hole of stretching end anchorage, and will anchoring
The nut of long bolt is embedded in hexagon anchor hole, then two anchoring long bolts are respectively penetrated to the round anchor hole of hold-down support two sides
Nut is inserted on anchoring long bolt by I, without tightening, completes the connection of stretching end anchorage and hold-down support.
Third step prestressed applies frame and jack, implements tensioning and anchoring
The screw hole II of very heavy top/bottom part is aligned with the screw hole I of prestress application frame, bolt is passed through into screw hole I and screw hole II,
Nut is tightened, the connection of jack and prestress application frame is completed；The gate open end of prestress application frame is blocked and is opened
Jack piston is withstood hold-down support by the both ends of pull end anchorage；The fixation being connect using jack pushing tow with stretching end anchorage
Support, keeps stretching end anchorage mobile to hold-down support connected to it, applies prestressing force to fiber cloth, when prestress application to rule
After definite value, the nut on two anchoring long bolts is tightened respectively, jack oil return removes prestress application frame and jack,
One layer of resin dipping glue is uniformly brushed to fiber cloth surface, completes the reinforcing to reinforcing bar or prestressed concrete beam.
It is compared with the prior art, the application can be obtained including following technical effect：
1, fiber cloth stretching end anchorage uses strand tapered anchorage, and intermediate plate clamped fibers cloth is inserted into the side of the wedged hole in anchorage
Method, and fiber cloth can be anchored effectively with fibres bond glue supplementary anchorage, avoid the sliding phenomenon in fiber cloth stretching process.So that
Anchorage anchoring efficiency of the invention is high.The biggish prestressing force that can apply to fiber cloth, enhances consolidation effect, improves fiber cloth
Utilization rate.
2, using stretching end anchorage and fixing end anchorage combination can be more convenient realize 2 layers and the above even level prestressing force
Fiber cloth reinforced beam construction.
3, after using the prestressed fiber cloth reinforced device of the present invention to fiber cloth stretch-draw anchor, consolidation effect is good, prestressing force
Loss is smaller, and the Reinforced Concrete Pier Column cosmetic variation after reinforcing is little.
4, the pre-stressed fiber cloth tensioning equipment of the application, simple structure are easy to operate.It is answered in advance using jack application
Power significantly improves prestress application efficiency for the prestress application mode for manually tightening tensioning screw rod.And tensioning
Device can recycle, better economy.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the prestressed fiber cloth reinforced girder tensioning anchor of the present invention.
Fig. 2 is the top view of the prestressed fiber cloth reinforced girder tensioning anchor of the present invention.
Fig. 3 is the main view of the prestressed fiber cloth reinforced girder tensioning anchor of the present invention.
Fig. 4 is stretching end anchorage in the present invention, intermediate plate, anchoring long bolt and hold-down support schematic diagram.
Fig. 5 is the main view of Fig. 4.
Fig. 6 is fixing end anchorage schematic diagram in the present invention.
Fig. 7 is the main view of Fig. 6.
Fig. 8 is the top view and partial cutaway view of Fig. 6.
Fig. 9 is the front schematic view of stretching end anchorage and intermediate plate in the present invention.
Figure 10 is the schematic rear view of stretching end anchorage and intermediate plate in the present invention.
Figure 11 is the top view and partial cutaway view of stretching end anchorage in the present invention.
Figure 12 is the schematic diagram of anchoring short screw and anchoring long bolt in the present invention.
Figure 13 is hold-down support and chemical bolt schematic diagram in the present invention.
Figure 14 is prestress application frame and jack schematic diagram in the present invention.
Figure 15 is hold-down support scheme of installation in the present invention.
Figure 16 is prestressed fiber cloth reinforced In Reinforced Concrete Box Girder prestress application process signal in the embodiment of the present invention
Figure.
Figure 17 is that prestressed fiber cloth reinforced In Reinforced Concrete Box Girder reinforces completion schematic diagram in the embodiment of the present invention.
It is marked in figure：
1- hold-down support；11- circular through hole；12- circle anchor hole I；2A- fixing end anchorage；2A1- circle anchor hole II；2A2- rectangle
Straight joint；2B- stretching end anchorage；2B1- stretching end anchorage anchor hole；2B11- hexagon anchor hole；2B12- circle anchor hole III；2B3- wedge
Shape hole；3- intermediate plate；4- prestress application frame；41- screw hole I；5- jack；51- screw hole II；52- piston；6A- anchors short spiral shell
Bar；6B- anchors long bolt；7- chemical bolt；8- fiber cloth；9- In Reinforced Concrete Box Girder.
Specific embodiment
The present invention is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1：
As shown in Fig. 1 ~ 17, the present embodiment is to reinforce object with In Reinforced Concrete Box Girder 9, using double-layer prestressed carbon cloth pair
It is reinforced, carbon cloth wide 150mm, specific as follows：
A kind of prestressed fiber cloth reinforced girder tensioning anchor, including two hold-down supports 1, fixing end anchorage 2A, one
A stretching end anchorage 2B, 3, two anchoring short screw 6A of two panels intermediate plate, two anchoring long bolt 6B, four chemical bolts 7, fibers
Cloth 8, prestress application frame 4 and jack 5.
The hold-down support 1 is cuboid.There are two the circular through hole 11 for installing chemical bolt 7, two sides thereon
Respectively there is a round anchor hole I12 for being connected with stretching end anchorage 2B or fixing end anchorage 2A.
The fixing end anchorage 2A is cuboid.Respectively there is a round anchor hole for being connected with hold-down support 1 at both ends
There are a 2mm wide rectangle straight joint 2A2 in II2A1, centre.
The stretching end anchorage 2B is cuboid.Respectively there is a stretching end anchor for being connected with hold-down support 1 at both ends
Has anchor hole 2B1.Stretching end anchorage anchor hole 2B1 is made of hexagon anchor hole 2B11 and circle anchor hole III2B12, hexagon anchor hole
The consistency of thickness of the anchor head 6B1 of the hole depth and anchoring long bolt 6B of 2B11.There is one to be used to be inserted into intermediate plate 3 among stretching end anchorage 2B
Wedged hole 2B3.
The intermediate plate 3 is wedge block, clamps fiber cloth 8 among two panels intermediate plate 3, is wedged the wedge in stretching end anchorage 2B
In the 2B3 of shape hole, the clamping to fiber cloth 8 is realized.
The prestress application frame 4 is door-shaped frame, there is the screw hole I 41 for being connected with jack thereon；Jack 5
There is the screw hole II 51 for being connected with prestress application frame 4 thereon, jack front end is piston 52.
In the present embodiment the construction method of prestressed fiber cloth reinforced girder tensioning anchor the specific steps are：
A, which is determined, reinforces position, and handles concrete surface
, determine reinforcing position on In Reinforced Concrete Box Girder 9；With the line of ink marker, on its surface, pop-up need to carry out pre-stressed fiber cloth
The position range of reinforcing.
, polished the concrete surface of 9 reinforcing scope of In Reinforced Concrete Box Girder, the processing such as filling-up hole, then at it
Uniformly brush one layer of epoxy adhesive layer in surface.
B installs anchorage
One end of fiber cloth 8 is passed through fixing end anchorage 2A by the length that required fiber cloth 8 is cut according to the length of strenthening member
Interior rectangle straight joint 2A2, then it is aligned the both ends of fiber cloth 8 fiber cloth doubling.Fiber cloth after both ends are aligned is by tensioning
The osculum of wedged hole 2B3 in the anchorage 2B of end penetrates great Kou and is pierced by, and passes through stretching end anchorage 2B.In 3 gripping fibers of two panels intermediate plate
After fiber cloth adhesive glue is uniformly smeared in the side and 8 both ends of fiber cloth of cloth, by the both ends of 3 clamped fibers cloth 8 of two panels intermediate plate, by it
It squeezes into the wedged hole 2B3 in stretching end anchorage 2B.First fiber cloth 8 is wound stretching end anchorage 2B mono- week, then by fiber cloth 8
It being fastened and holds anchorage 2A mono- week, when winding, ensures to wrap between fiber cloth 8 and fixing end anchorage 2A and stretching end anchorage 2B, to
After fiber cloth bonds micelle colloid solidification, the installation of fiber cloth 8 and stretching end anchorage 2B and fixing end anchorage 2A is completed.
C assembles hold-down support and fixed anchorage
, be drilled on the reinforcing position to reinforcement four chemical bolt holes for installing two hold-down supports 1, at it
Middle implantation chemical bolt 7.
, by chemical bolt 7 pass through hold-down support 1 on circular through hole 11, tighten the nut on chemical bolt 7 for two
Hold-down support 1 is fixed to reinforcement surface, and performance is as shown in Figure 8.
, the round anchor hole II2A1 of fixing end anchorage 2A is aligned with the round anchor hole I12 of hold-down support 1, by two anchors
Gu short screw 6A respectively penetrates the round anchor hole II2A1 of the round anchor hole I12 and fixing end anchorage 2A of hold-down support 1, twist simultaneously
Nut on tight two anchorings short screw 6A, completes the anchoring of fixing end anchorage 2A and hold-down support 1.
4., by I12 pairs of round anchor hole of the round anchor hole III2B12 at the both ends stretching end anchorage 2B and 1 two sides of hold-down support
Together.Two anchoring long bolt 6B are each passed through to the anchor hole 2B1 of stretching end anchorage, and the anchor head 6B1 for anchoring long bolt 6B is embedding
Enter in hexagon anchor hole 2B11.The round anchor hole I12 that two anchoring long bolt 6B are respectively penetrated to 1 two sides of hold-down support again, will
Nut is inserted on anchoring long bolt 6B, without tightening, completes the connection of stretching end anchorage and hold-down support 1.
D prestressed applies frame and jack, implements tensioning and anchoring
, the screw hole II 51 of 5 bottom of jack is aligned with the screw hole I 41 of prestress application frame 4, bolt is passed through into screw hole
I41 and screw hole II 51 tighten nut, complete the connection of jack 5 and prestress application frame 4.
, the gate open end of prestress application frame 4 is blocked to the both ends of stretching end anchorage 2B, by jack piston 52
Withstand hold-down support 1.
, the hold-down support 1 that is connect with stretching end anchorage 2B using 5 pushing tow of jack, make stretching end anchorage 2B to its
The hold-down support 1 of connection is mobile, applies prestressing force to fiber cloth 8.Prestressed fiber cloth reinforced concrete box girder prestress application
Process condition is as shown in Figure 9.After prestress application to specified value, two spiral shells anchored on long bolt 6B are tightened for two respectively
It is female.5 oil return of jack removes prestress application frame 4 and jack 5.One layer of resin dipping is uniformly brushed to 8 surface of fiber cloth
Glue completes the reinforcing to In Reinforced Concrete Box Girder 9.Final reinforcing performance is as shown in figure 17.
Embodiment 2：
As shown in Fig. 1 ~ 17, the present embodiment is to reinforce object with In Reinforced Concrete Box Girder 9, using four layers of prestressed carbon cloth pair
It is reinforced, carbon cloth wide 150mm, specific as follows：
A kind of prestressed fiber cloth reinforced girder tensioning anchor, including two hold-down supports 1, fixing end anchorage 2A, one
A stretching end anchorage 2B, 3, two anchoring short screw 6A of two panels intermediate plate, two anchoring long bolt 6B, four chemical bolts 7, fibers
Cloth 8, prestress application frame 4 and jack 5.
The hold-down support 1 is cuboid.There are two the circular through hole 11 for installing chemical bolt 7, two sides thereon
Respectively there is a round anchor hole I12 for being connected with stretching end anchorage 2B or fixing end anchorage 2A.
The fixing end anchorage 2A is cuboid.Respectively there is a round anchor hole for being connected with hold-down support 1 at both ends
There are a 2mm wide rectangle straight joint 2A2 in II2A1, centre.
The stretching end anchorage 2B is cuboid.Respectively there is a stretching end anchor for being connected with hold-down support 1 at both ends
Has anchor hole 2B1.Stretching end anchorage anchor hole 2B1 is made of hexagon anchor hole 2B11 and circle anchor hole III2B12, hexagon anchor hole
The consistency of thickness of the anchor head 6B1 of the hole depth and anchoring long bolt 6B of 2B11.There is one to be used to be inserted into intermediate plate 3 among stretching end anchorage 2B
Wedged hole 2B3.
The intermediate plate 3 is wedge block, clamps fiber cloth 8 among two panels intermediate plate 3, is wedged the wedge in stretching end anchorage 2B
In the 2B3 of shape hole, the clamping to fiber cloth 8 is realized.
The prestress application frame 4 is door-shaped frame, there is the screw hole I 41 for being connected with jack thereon；Jack 5
There is the screw hole II 51 for being connected with prestress application frame 4 thereon, jack front end is piston 52.
In the present embodiment the construction method of prestressed fiber cloth reinforced girder tensioning anchor the specific steps are：
A, which is determined, reinforces position, and handles concrete surface
, determine reinforcing position on In Reinforced Concrete Box Girder 9；With the line of ink marker, on its surface, pop-up need to carry out pre-stressed fiber cloth
The position range of reinforcing.
, polished the concrete surface of 9 reinforcing scope of In Reinforced Concrete Box Girder, the processing such as filling-up hole, then at it
Uniformly brush one layer of epoxy adhesive layer in surface.
B installs anchorage
The length that two required fiber cloths 8 are cut according to the length of strenthening member stacks cut two fiber cloths whole
It is neat to form double layer fibre cloth 8, one end of double layer fibre cloth 8 is passed through into the rectangle straight joint 2A2 in fixing end anchorage 2A, then will be double-deck
Fiber cloth doubling is aligned the both ends of fiber cloth 8.In the 8 both ends fiber cloth of side and fiber cloth of 3 gripping fibers cloth of two panels intermediate plate
Between uniformly smear fiber cloth adhesive glue after, by the end of 3 clamped fibers cloth 8 of two panels intermediate plate, squeezed into stretching end anchorage
In wedged hole 2B3 in 2B, the clamping to fiber cloth 8 is completed.First fiber cloth 8 is wound stretching end anchorage 2B mono- week, then will be fine
Dimension cloth 8 is fastened and holds anchorage 2A mono- week, and when winding ensures to wrap up between fiber cloth 8 and fixing end anchorage 2A and stretching end anchorage 2B
Tightly, after fiber cloth bonding micelle colloid solidification, the installation of fiber cloth 8 and stretching end anchorage 2B and fixing end anchorage 2A is completed.
C assembles hold-down support and fixed anchorage
, be drilled on the reinforcing position to reinforcement four chemical bolt holes for installing two hold-down supports 1, at it
Middle implantation chemical bolt 7.
, by chemical bolt 7 pass through hold-down support 1 on circular through hole 11, tighten the nut on chemical bolt 7 for two
Hold-down support 1 is fixed to reinforcement surface, and performance is as shown in Figure 8.
, the round anchor hole II2A1 of fixing end anchorage 2A is aligned with the round anchor hole I12 of hold-down support 1, by two anchors
Gu short screw 6A respectively penetrates the round anchor hole II2A1 of the round anchor hole I12 and fixing end anchorage 2A of hold-down support 1, twist simultaneously
Nut on tight two anchorings short screw 6A, completes the anchoring of fixing end anchorage 2A and hold-down support 1.
4., by I12 pairs of round anchor hole of the round anchor hole III2B12 at the both ends stretching end anchorage 2B and 1 two sides of hold-down support
Together.Two anchoring long bolt 6B are each passed through to the anchor hole 2B1 of stretching end anchorage, and the anchor head 6B1 for anchoring long bolt 6B is embedding
Enter in hexagon anchor hole 2B11.The round anchor hole I12 that two anchoring long bolt 6B are respectively penetrated to 1 two sides of hold-down support again, will
Nut is inserted on anchoring long bolt 6B, without tightening, completes the connection of stretching end anchorage and hold-down support 1.
D prestressed applies frame and jack, implements tensioning and anchoring
, the screw hole II 51 of 5 bottom of jack is aligned with the screw hole I 41 of prestress application frame 4, bolt is passed through into screw hole
I41 and screw hole II 51 tighten nut, complete the connection of jack 5 and prestress application frame 4.
, the gate open end of prestress application frame 4 is blocked to the both ends of stretching end anchorage 2B, by jack piston 52
Withstand hold-down support 1.
, the hold-down support 1 that is connect with stretching end anchorage 2B using 5 pushing tow of jack, make stretching end anchorage 2B to its
The hold-down support 1 of connection is mobile, applies prestressing force to fiber cloth 8.Prestressed fiber cloth reinforced concrete box girder prestress application
Process condition is as shown in Figure 9.After prestress application to specified value, two spiral shells anchored on long bolt 6B are tightened for two respectively
It is female.5 oil return of jack removes prestress application frame 4 and jack 5.One layer of resin dipping is uniformly brushed to 8 surface of fiber cloth
Glue completes the reinforcing to In Reinforced Concrete Box Girder 9.Final reinforcing performance is as shown in figure 17.
Specific embodiment described herein only illustrate the spirit of the present invention by way of example.The technical field of the invention
Technical staff can do the similar mode of certain modify or supplement or adopts to described specific embodiment and substitute, but can't
Deviate spirit or beyond the scope defined by the appended claims of the invention.
Claims (2)
1. a kind of prestressed fiber cloth reinforced girder tensioning anchor, it is characterised in that the prestressed fiber cloth reinforced girder tensioning anchor
It is fixedly mounted with and sets including two hold-down supports（1）, a fixing end anchorage（2A）, a stretching end anchorage（2B）, two panels intermediate plate（3）,
Two anchoring short screws（6A）, two anchoring long bolts（6B）, four chemical bolts（7）, fiber cloth（8）, prestress application frame
Frame（4）And jack（5）；
The hold-down support（1）For cuboid, there are two for installing chemical bolt thereon（7）Circular through hole（11）, two
Side respectively have one for and stretching end anchorage（2B）Or fixing end anchorage（2A）Connected round anchor hole I（12）；
The fixing end anchorage（2A）For cuboid, both ends respectively have one to be used for and hold-down support（1）Connected round anchor hole
II（2A1）, there is a 2mm wide rectangle straight joint in centre（2A2）；
The stretching end anchorage（2B）For cuboid, both ends respectively have one to be used for and hold-down support（1）Connected stretching end anchor
Has anchor hole（2B1）, stretching end anchorage anchor hole（2B1）By hexagon anchor hole（2B11）With round anchor hole III（2B12）Composition, hexagonal
Shape anchor hole（2B11）Hole depth and anchoring long bolt（6B）Anchor head（6B1）Consistency of thickness, stretching end anchorage（2B）Centre has
One for being inserted into intermediate plate（3）Wedged hole（2B3）；
The intermediate plate（3）For wedge block, two panels intermediate plate（3）Clamp fiber cloth in centre（8）, wedged stretching end anchorage（2B）It is interior
Wedged hole（2B3）In, it realizes to fiber cloth（8）Clamping；
The prestress application frame（4）For door-shaped frame, it is used for thereon and jack（5）Connected screw hole I（41）；It is very heavy
Top（5）Have thereon and is used for and prestress application frame（4）Connected screw hole II（51）, jack front end is piston（52）.
2. a kind of construction method of prestressed fiber cloth reinforced girder tensioning anchor as described in claim 1, feature exist
In the specific steps are：
The first step installs anchorage
Required fiber cloth is cut according to the length of strenthening member（8）Length, by fiber cloth（8）One end pass through fixing end anchor
Tool（2A）Interior rectangle straight joint（2A2）, then fiber cloth doubling made into fiber cloth（8）Both ends alignment, the fibre after both ends are aligned
Wei Bu is by stretching end anchorage（2B）Interior wedged hole（2B3）Osculum penetrate great Kou and be pierced by, pass through stretching end anchorage（2B）；Two
Piece intermediate plate（3）The side of gripping fibers cloth and fiber cloth（8）After fiber cloth adhesive glue is uniformly smeared at both ends, by two panels intermediate plate（3）
Clamped fibers cloth（8）Both ends, squeezed into stretching end anchorage（2B）Interior wedged hole（2B3）In, it completes to fiber cloth（8）
Clamping；First by fiber cloth（8）Wind stretching end anchorage（2B）One week, then by fiber cloth（8）It is fastened and holds anchorage（2A）One
Week, when winding, ensure fiber cloth（8）With fixing end anchorage（2A）With stretching end anchorage（2B）Between wrap, to fiber cloth adhesive glue
After colloid solidification, fiber cloth is completed（8）With stretching end anchorage（2B）With fixing end anchorage（2A）Installation；
Second step assembles hold-down support and fixed anchorage
It is drilled on the reinforcing position to reinforcement for installing two hold-down supports（1）Four chemical bolt holes, wherein
It is implanted into chemical bolt（7）；By chemical bolt（7）Across hold-down support（1）On circular through hole（11）, tighten chemical bolt（7）
On nut by two hold-down supports（1）It is fixed to reinforcement surface；By fixing end anchorage（2A）Round anchor hole II（2A1）With
Hold-down support（1）Round anchor hole I（12）Alignment, by two anchoring short screws（6A）Respectively penetrate hold-down support（1）Circle
Anchor hole I（12）With fixing end anchorage（2A）Round anchor hole II（2A1）, while tightening two anchoring short screws（6A）On spiral shell
Mother completes fixing end anchorage（2A）With hold-down support（1）Anchoring；By stretching end anchorage（2B）The round anchor hole III at both ends
（2B12）With hold-down support（1）The round anchor hole I of two sides（12）Alignment, by two anchoring long bolts（6B）It is each passed through stretching end
The ambilateral anchor hole of anchor（2B1）, and long bolt will be anchored（6B）Nut（6B1）It is embedded in hexagon anchor hole（2B11）In, then will
Two anchoring long bolts（6B）Respectively penetrate hold-down support（1）The round anchor hole I of two sides（12）, nut is inserted in anchoring long bolt
（6B）On, without tightening, complete stretching end anchorage and hold-down support（1）Connection；
Third step prestressed applies frame and jack, implements tensioning and anchoring
By jack（5）The screw hole II of bottom（51）With prestress application frame（4）Screw hole I（41）Alignment, bolt is passed through
Screw hole I（41）And screw hole II（51）, nut is tightened, jack is completed（5）With prestress application frame（4）Connection；It will answer in advance
Power applies frame（4）Gate open end block stretching end anchorage（2B）Both ends, by jack piston（52）Withstand fixed branch
Seat（1）；Use jack（5）Pushing tow and stretching end anchorage（2B）The hold-down support of connection（1）, make stretching end anchorage（2B）To with
Its hold-down support connected（1）It is mobile, to fiber cloth（8）Apply prestressing force to tighten respectively after prestress application to specified value
Two anchoring long bolts（6B）On nut, jack（5）Oil return removes prestress application frame（4）And jack（5）, right
Fiber cloth（8）One layer of resin dipping glue is uniformly brushed on surface, completes the reinforcing to reinforcing bar or prestressed concrete beam.
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| CN201810582805.XA CN108843037B (en) | 2018-06-07 | 2018-06-07 | Construction method of prestressed fiber cloth reinforced beam tensioning and anchoring device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881591A (en) * | 2019-04-04 | 2019-06-14 | 徐慧云 | The reversed stretch-draw prestressing force anchorage of carbon fiber board |
| CN110029593A (en) * | 2019-04-12 | 2019-07-19 | 桂林理工大学 | A kind of tensioning of the prestressed fiber cloth reinforced beam of multilayer and anchor |
| CN110029594A (en) * | 2019-04-12 | 2019-07-19 | 桂林理工大学 | A kind of construction method using multilayer prestressed fiber cloth reinforced concrete column |
| CN110258931A (en) * | 2019-07-11 | 2019-09-20 | 兰州恒驰预应力科技有限公司 | A kind of clipping anchor of prestressing force |
| CN110359726A (en) * | 2019-07-16 | 2019-10-22 | 重庆达力索缆科技有限公司 | With the anchorage for turning to pressing plate |
| CN110565547A (en) * | 2019-10-17 | 2019-12-13 | 北京市市政四建设工程有限责任公司 | Inclined leg steel bridge supporting and jacking reinforcing device and method |
| CN111155784A (en) * | 2020-01-19 | 2020-05-15 | 河海大学 | Prestressed FRP plate reverse tensioning anchoring assembly and use method thereof |
| CN112942684A (en) * | 2021-02-04 | 2021-06-11 | 北京工业大学 | Strip-type component tensioning and anchoring integrated device with multiple anchoring capabilities |
| CN113622705A (en) * | 2021-08-20 | 2021-11-09 | 上海悍马建筑科技有限公司 | Anchoring method for detachable prestressed carbon fiber plate |
| CN113846868A (en) * | 2021-11-10 | 2021-12-28 | 河海大学 | Reinforcing device and reinforcing method based on multi-layer fiber cloth prestress application |
| CN113931085A (en) * | 2021-10-19 | 2022-01-14 | 上海悍马建筑科技有限公司 | Device and method for vertically tensioning prestressed carbon fiber plate |
| CN114214916A (en) * | 2022-01-25 | 2022-03-22 | 北京交达铁工科技有限公司 | Prestressed top-pressing anchor-pulling system and construction method |
| CN115095182A (en) * | 2022-07-19 | 2022-09-23 | 中国建筑第八工程局有限公司 | Novel fiber cloth anchoring device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100653629B1 (en) * | 2006-01-18 | 2006-12-05 | 한국건설기술연구원 | Jack apparatus for near surface mounted reinforcements |
| WO2009112162A3 (en) * | 2008-03-02 | 2009-11-26 | Bernd Schottdorf | Method, device, and support structure and the use thereof for producing a fiber composite part |
| CN101851985A (en) * | 2010-05-27 | 2010-10-06 | 卓清 | Articulated anchor and prestress tensioning method of high strength fibre composite sheet |
| CN105781123A (en) * | 2016-05-06 | 2016-07-20 | 西南交通大学 | Mechanical gripping anchor for carbon fiber plate and reinforcing device |
| CN206267537U (en) * | 2016-10-28 | 2017-06-20 | 中国石油化工股份有限公司 | A kind of tensioning of pre-stressed carbon fiber reinforced plastics sheet material and fixing device |
| CN107794849A (en) * | 2017-11-05 | 2018-03-13 | 桂林理工大学 | Using the construction method of the prestressed fiber cloth reinforced post of detachable tension ground tackle |
| CN207277886U (en) * | 2017-10-13 | 2018-04-27 | 海宁安捷复合材料有限责任公司 | A kind of double-layer prestressed carbon fiber board hardened system |
-
2018
- 2018-06-07 CN CN201810582805.XA patent/CN108843037B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100653629B1 (en) * | 2006-01-18 | 2006-12-05 | 한국건설기술연구원 | Jack apparatus for near surface mounted reinforcements |
| WO2009112162A3 (en) * | 2008-03-02 | 2009-11-26 | Bernd Schottdorf | Method, device, and support structure and the use thereof for producing a fiber composite part |
| CN101851985A (en) * | 2010-05-27 | 2010-10-06 | 卓清 | Articulated anchor and prestress tensioning method of high strength fibre composite sheet |
| CN105781123A (en) * | 2016-05-06 | 2016-07-20 | 西南交通大学 | Mechanical gripping anchor for carbon fiber plate and reinforcing device |
| CN206267537U (en) * | 2016-10-28 | 2017-06-20 | 中国石油化工股份有限公司 | A kind of tensioning of pre-stressed carbon fiber reinforced plastics sheet material and fixing device |
| CN207277886U (en) * | 2017-10-13 | 2018-04-27 | 海宁安捷复合材料有限责任公司 | A kind of double-layer prestressed carbon fiber board hardened system |
| CN107794849A (en) * | 2017-11-05 | 2018-03-13 | 桂林理工大学 | Using the construction method of the prestressed fiber cloth reinforced post of detachable tension ground tackle |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881591A (en) * | 2019-04-04 | 2019-06-14 | 徐慧云 | The reversed stretch-draw prestressing force anchorage of carbon fiber board |
| CN110029593A (en) * | 2019-04-12 | 2019-07-19 | 桂林理工大学 | A kind of tensioning of the prestressed fiber cloth reinforced beam of multilayer and anchor |
| CN110029594A (en) * | 2019-04-12 | 2019-07-19 | 桂林理工大学 | A kind of construction method using multilayer prestressed fiber cloth reinforced concrete column |
| CN110258931A (en) * | 2019-07-11 | 2019-09-20 | 兰州恒驰预应力科技有限公司 | A kind of clipping anchor of prestressing force |
| CN110359726A (en) * | 2019-07-16 | 2019-10-22 | 重庆达力索缆科技有限公司 | With the anchorage for turning to pressing plate |
| CN110565547A (en) * | 2019-10-17 | 2019-12-13 | 北京市市政四建设工程有限责任公司 | Inclined leg steel bridge supporting and jacking reinforcing device and method |
| CN110565547B (en) * | 2019-10-17 | 2020-06-26 | 北京市市政四建设工程有限责任公司 | Inclined leg steel bridge supporting and jacking reinforcing device and method |
| CN111155784B (en) * | 2020-01-19 | 2024-03-26 | 河海大学 | Prestressed FRP plate reverse tensioning anchor assembly and application 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 |
| CN112942684A (en) * | 2021-02-04 | 2021-06-11 | 北京工业大学 | Strip-type component tensioning and anchoring integrated device with multiple anchoring capabilities |
| CN113622705A (en) * | 2021-08-20 | 2021-11-09 | 上海悍马建筑科技有限公司 | Anchoring method for detachable prestressed carbon fiber plate |
| CN113931085A (en) * | 2021-10-19 | 2022-01-14 | 上海悍马建筑科技有限公司 | Device and method for vertically tensioning prestressed carbon fiber plate |
| CN113846868A (en) * | 2021-11-10 | 2021-12-28 | 河海大学 | Reinforcing device and reinforcing method based on multi-layer fiber cloth prestress application |
| CN113846868B (en) * | 2021-11-10 | 2022-11-15 | 河海大学 | Reinforcing device and reinforcing method based on multi-layer fiber cloth prestress application |
| CN114214916A (en) * | 2022-01-25 | 2022-03-22 | 北京交达铁工科技有限公司 | Prestressed top-pressing anchor-pulling system and construction method |
| CN115095182A (en) * | 2022-07-19 | 2022-09-23 | 中国建筑第八工程局有限公司 | Novel fiber cloth anchoring device and method |
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Application publication date: 20181120 Assignee: Guilin Guolida Construction and Installation Engineering Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2022450000087 Denomination of invention: A construction method of tensioning and anchoring device for beam strengthened with prestressed fiber cloth Granted publication date: 20201009 License type: Common License Record date: 20221121 |