CN106760608A - A kind of correction of pre-stress fibre plate stretching end formula anchor and its anchoring process - Google Patents
A kind of correction of pre-stress fibre plate stretching end formula anchor and its anchoring process Download PDFInfo
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- CN106760608A CN106760608A CN201611244003.5A CN201611244003A CN106760608A CN 106760608 A CN106760608 A CN 106760608A CN 201611244003 A CN201611244003 A CN 201611244003A CN 106760608 A CN106760608 A CN 106760608A
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- tensioning
- plate
- stretching end
- reaction frame
- guide rod
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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
Abstract
A kind of pre-stress fibre plate stretching end correction formula anchor, including stretching end anchorage, tensioning reaction frame, tensioning guide rod, tensioning baffle plate and jack；Deviation correction mechanism is provided between stretching end anchorage and tensioning baffle plate.The present invention is using the linear relationship between fiberboard stretching force and elongation, position and install tensioning reaction frame, when fiberboard is stretched to the waist-shaped hole reserved on the stretching end anchorage cover plate internal tapping circular hole reserved with tensioning reaction frame base plate to be essentially coincided, stretching end anchorage is connected with tensioning reaction frame using high-strength bolt, completes the anchoring to stretching end anchorage.Using apparatus of the present invention and method, fiber board prestress tension i.e. dismountable tensioning guide rod after terminating overcomes the durability deficiency problem of existing pre-stress fibre plate stretching end tensioning guide rod anchoring process generally existing.The deviation correction mechanism of use can greatly reduce the cost and difficulty of construction of actual reinforcing, improve tensioning reaction frame riser stressing conditions so that tensioning guide rod stress is more reasonable in stretching process.
Description
Technical field
The invention belongs to civil engineering structure reinforcement and repair technical field, more particularly to a kind of pre-stress fibre plate stretching end
Correction formula anchor and its anchoring process.
Background technology
In recent years, fibrous material reinforced concrete structure technology quickly grows, and with its unique advantage in reinforcing engineering
In be used widely.Fibre sheet material has intensity higher, but elastic modelling quantity is close with steel, and the performance of its intensity is deforming
It is cost, thus its high intensity is hardly resulted in and given full play to.Research shows：Can be fine using pre-stress fibre sheet material reinforcement technique
Ground solves this outstanding problem.
Existing pre-stress fibre sheet material anchorage mainly has waveform anchor, intermediate plate anchor, flat board anchor three major types, but no matter which kind of uses
Anchorage is reinforced, and is required to carry out tensioning using jack when applying prestressing force to fibre sheet material, because jack has one
Fixed volume, and actually reinforce by site space position limitation, it is impossible to depth slot treatment is carried out to jack.As a whole,
There is deficiency following prominent in existing pre-stress fibre sheet material tension technology：Existing pre-stress fibre plate stretching and anchoring device, fiber
Board prestress applies end posttension pull end anchorage and often directly coordinates high-strength bolt to be anchored using tensioning guide rod, and tensioning
Guide rod long service is vulnerable to the influence of external environment erosion, is easily caused fiberboard loss of prestress, reduces consolidation effect；It is very heavy
Top center of gravity is inconsistent with tensioning guide rod center of gravity, tensioning guide rod, tensioning reaction frame etc. is easily caused in stretching process and is occured bending and deformation,
Fibre sheet material prestress application is adversely affected.
The content of the invention
In order to solve the weak point in existing pre-stress fibre plate stretching end anchoring process, adopted the invention provides one kind
Controlled to apply prestress value with fiberboard stretching extension value, to ensure that tensioning guide rod and tensioning reaction frame maintain a good state pre-
Stress fiber plate stretching end correction formula anchor and its anchoring process.
To achieve the above object, concrete scheme of the invention is as follows：A kind of pre-stress fibre plate stretching end correction formula anchoring
Device, including stretching end anchorage 4, tensioning reaction frame 9, tensioning guide rod 7, tensioning baffle plate 12 and jack 11；
The right-hand member of pre-stress fibre plate 1 is clamped in stretching end anchorage 4, and tensioning guide rod 7 is provided with two along left and right horizontal direction is parallel,
Stretching end anchorage 4, tensioning reaction frame 9 and tensioning baffle plate 12, are set on two tensioning guide rods 7 successively from left to right, and tensioning is led
The two ends of bar 7 are threaded with left locking nut 2 and right locking nut 13, the right-hand member of left locking nut 2 and stretching end anchorage 4 respectively
Left side is contacted, and the left end of right locking nut 13 is contacted with the left-hand face of tensioning baffle plate 12；The body of jack 11 and piston rod
End coordinates with the right-hand member of tensioning reaction frame 9 and the left-hand face top pressure of tensioning baffle plate 12 respectively；Stretching end anchorage and tensioning baffle plate 12
Between be provided with deviation correction mechanism positioned at the lower section of jack 11；
Anchor connection structure is correspondingly arranged between the right side of stretching end anchorage 4 and the left side of tensioning reaction frame 9；
Tensioning reaction frame 9 includes the L-type platy structure that is made up of fixed plate 17 and bearing plate 18, the right-hand member edge of fixed plate 17 with
The upper end edge of bearing plate 18 is fixedly connected, and the front and rear of fixed plate 17 is equipped with one for wearing along left and right horizontal direction
The right pilot hole 16 of tensioning guide rod 7, fixed plate 17 is fixedly connected under civil engineering structure beam by the second high-strength bolt 10
Surface, the right lateral surface of bearing plate 18 coordinates with the piston rod end top pressure of jack 11；
Deviation correction mechanism includes tensioning eccentric adjusting bar 24, left adjusting nut 25, right adjusting nut 26, helical compression spring 27 and block
28, tensioning eccentric adjusting bar 24 passes through tensioning baffle plate 12, right regulation parallel to tensioning guide rod 7, the right-hand member of tensioning eccentric adjusting bar 24
Nut 26 is threaded in the right-hand member of tensioning eccentric adjusting bar 24 and is contacted with the right flank of tensioning baffle plate 12, tensioning eccentric adjusting bar 24
Left end passes through bearing plate 18, helical compression spring 27 and block 28 to be set on tensioning eccentric adjusting bar 24, the spiral shell of left adjusting nut 25
Line is connected to the left end of tensioning eccentric adjusting bar 24 and is contacted with the left side of block 28, the left end of helical compression spring 27 and right-hand member respectively with gear
The right side of block 28 and the left surface top pressure of bearing plate 18 coordinate.
Stretching end anchorage 4 includes upper anchor plate 14 and lower anchor plate 15, and the right-hand member of pre-stress fibre plate 1 is clamped in upper anchor plate
Between 14 and lower anchor plate 15, the first high-strength bolt arranged by several arrays between upper anchor plate 14 and lower anchor plate 15
5 are fastenedly connected, and the front portion and rear portion of binding face are equipped with along left and right horizontal direction between upper anchor plate 14 and lower anchor plate 15
One left pilot hole 3 for being used to wear tensioning guide rod 7；
The upper surface of the lower surface of upper anchor plate 14 and lower anchor plate 15 is evenly arranged with some anti-skidding grooves, every anti-skidding groove
Length direction of the length direction with pre-stress fibre plate 1 it is vertical, anti-skidding groove depth is 0.5mm, adjacent two anti-skidding grooves
Spacing is 4.8mm.
Anchor connection structure include one group of waist-shaped hole 6 and one group of circular hole 8 with internal tapping, upper anchor plate 14 and with lower anchoring
The left side edge alignment of plate 15, the length of the length less than lower anchor plate 15 of upper anchor plate 14, one group of waist-shaped hole 6 is then opened from preceding
The right side of lower anchor plate 15 is located at, the length direction of each waist-shaped hole 6 is set along left and right horizontal direction, and one group of circular hole 8 is certainly
Preceding to be then opened in the left side of fixed plate 17, each waist-shaped hole 6 is correspondingly arranged with a circular hole 8 or so.
Described deviation correction mechanism is provided with two sets, and two sets of deviation correction mechanisms are located in same level；
The stiffness coefficient of helical compression spring 7, whereinE、AWithlIt is expressed as fibre sheet material elastic modelling quantity, area of section
With length.
Described deviation correction mechanism is provided with two sets, and two sets of deviation correction mechanisms are located in same level；The helical compression spring 7
Stiffness coefficient considers fibre sheet material, tensioning guide rod 7 and determines with the deformation of tensioning eccentric adjusting bar 24.
A kind of anchoring process of pre-stress fibre plate stretching end correction formula anchor, comprises the following steps：
1）, interception pre-stress fibre plate 1：Length according to civil engineering structure beam cuts the pre-stress fibre plate 1 of appropriate length,
The dimensions of pre-stress fibre plate 1 is：Width 50mm, thickness 1.4mm；
2）, processing and fabricating stretching end anchorage 4 upper anchor plate 14 and lower anchor plate 15, the length of upper anchor plate 14 is 220mm, under
The length of anchor plate 15 is 240mm, and the thickness of upper anchor plate 14 and lower anchor plate 15 is 12mm；
Processing and fabricating tensioning reaction frame 9, the L-type platy structure of fixed plate 17 and bearing plate 18 composition of tensioning reaction frame 9 is integrally
Bending is formed；
Two tensioning guide rods 7 of processing and fabricating, the diameter of tensioning guide rod 7 is respectively 12mm, 1m with length；
The tensioning eccentric adjusting bar 24 and block 28 of processing and fabricating deviation correction mechanism；
3）, the left end of pre-stress fibre plate 1 is clamped to using fixed anchorage the left side lower surface of civil engineering structure beam；Will be pre-
The left end of stress fiber plate 1 is placed between the upper anchor plate 14 of stretching end anchorage 4 and lower anchor plate 15, and upper anchor plate 14 is with
The fastening frictional force of point enhancing and pre-stress fibre plate 1 in the anti-skidding groove on the surface of anchor plate 15, the first high-strength bolt 5 of screwing on makes
Upper anchor plate 14 and lower anchor plate 15 clamp pre-stress fibre plate 1；
Then tensioning reaction frame 9 is installed：For the determination of the position of tensioning reaction frame 9, setting applies pre- answering to pre-stress fibre plate 1
Force value is the 30% of ultimate strength, and the elongation 1.7% of pre-stress fibre plate 1 is actually stretched by calculating pre-stress fibre plate 1
Amount long is, one end start bit of jack 11 is close to stretching end anchorage 4
Put, 5.1cm is gone out along tensioning orientation measurement to the right, the position is the installation site of tensioning reaction frame 9, uses the second high-strength bolt
10 lower surfaces that fixed plate 17 is fixedly connected on civil engineering structure beam；
4）, install stretching end power-driven mechanism：By two tensioning guide rods 7 through in left pilot hole 3 and right pilot hole 16, then
Be placed on jack 11 between tensioning reaction frame 9 and tensioning baffle plate 12 through two right-hand members of tensioning guide rod 7 by tensioning baffle plate 12,
Screwed on left locking nut 2 in the left end of two tensioning guide rods 7, screwed on right locking nut 13 in the right-hand member of two tensioning guide rods 7；
5）, install deviation correction mechanism：By two tensioning eccentric adjusting bars 24 through between tensioning baffle plate 12 and bearing plate 18, first opening
The right-hand member of eccentric adjusting bar 24 is drawn to screw on right adjusting nut 26, then that helical compression spring 27 and block 28 be set to tensioning successively successively is inclined
On heart adjusting rod 24, screwed on left adjusting nut 25 in the left end of tensioning eccentric adjusting bar 24, adjustment helical compression spring 7 two ends respectively with
The right side of block 28 and the pressure on top surface of the left surface of bearing plate 18；
6）, stretch-draw prestressing force fiberboard 1：Jack 11 is connected to Hydraulic Station by fluid pressure line, drives jack 11, jack
11 pushing tow tensioning baffle plates 12, tensioning baffle plate 12 drives stretching end anchorage 4 synchronously to move right by tensioning guide rod 7, in spiral pressure
Under the two ends of spring 7 are to the effect of the top pressure of the right side of block 28 and the left surface of bearing plate 18, make the center line of jack 11 all the time with
Draw the keeping parallelism of guide rod 7, it is to avoid the generation of tensioning guide rod 7 eccentric force produces flexural deformation to apply fibre sheet material in stretching process
Prestressing value is impacted, so as to realize the tensioning to pre-stress fibre plate 1, stretching end anchorage 4 is found in stretching process
When one group of waist-shaped hole 6 on lower anchor plate 15 is covered in one group of circular hole 8 in the fixed plate 17 of tensioning reaction frame 9, hydraulic pressure is checked
Hydraulic pressure meter reading on standing and it is synchronous jack 11 is pressurizeed or is unloaded finely tune value of thrust, after collated correct complete right
The prestress application of pre-stress fibre plate 1；
7）, fixed stretching end anchorage 4：Keep jack 11 to be in and hold lotus state, sight the waist-shaped hole reserved on stretching end anchorage 4
6 with tensioning reaction frame 9 on the overlapping positions of circular hole 8, be attached using the 3rd high-strength bolt 19 and circular hole 8, tighten the 3rd high
After strength bolt 19, the redundance in waist-shaped hole 6 is filled with U-shaped key, completes the fixation to stretching end anchorage 4, is then unloaded simultaneously
Remove jack 11, tensioning guide rod 7 and tensioning baffle plate 12.
In sum, the present invention is applied to civil engineering structure reparation field, with existing pre-stress fibre plate stretching end anchor
Solid method is compared to advantage following prominent：
1st, the present invention positions and installs tensioning reaction frame using the linear relationship between fiberboard stretching force and elongation；Adopted
Effective control that stretching end anchor passes through pre-stress fibre plate elongation control realization prestressed stretch-draw so that fiber
It is more convenient that board prestress applies process.
2nd, stretching end anchorage of the invention is fixed not against tensioning guide rod, but to the lower anchor plate of stretching end anchorage
Upper default waist-shaped hole, fiberboard applies to be used after prestressing force terminates the 3rd high-strength bolt by stretching end anchorage and tensioning reaction frame
The reserved internal tapping circular hole connection of fixed plate.Can be effectively ensured using the long-term prestressing force of anchoring process fiberboard, anchor
Solid method is more reliable and more stable, fiber board prestress tension i.e. dismountable tensioning guide rod after terminating, and overcomes existing prestressing force fine
The durability deficiency problem of plate stretching end tensioning guide rod anchoring process generally existing is tieed up, tensioning guide rod long service is efficiently solved
It is vulnerable to external environment influence, once corrosion will cause the excessive problem of fiberboard loss of prestress.
3rd, during traditional common tensioning, because jack tool has the dimensions, jack center of gravity is with tensioning guide rod center of gravity not
Unanimously, as gradually increasing for stretching force can cause tensioning guide rod, the bearing plate deformation of tensioning reaction frame and tensioning baffle plate remote
The problems such as from tensioning guide rod part deformation hysteresis, jack unstable phenomenon even can occur when serious.Using tensioning of the invention
Deviation correction mechanism, contributes to the bearing plate for suppressing tensioning reaction frame to deform, and enable that tensioning baffle plate is integrally stretched with tensioning guide rod
Length deforms and synchronizing moving, so as to ensure that jack smoothly can apply prestressing force to fibre sheet material.
4th, the tensioning eccentric adjusting bar of deviation correction mechanism use, helical compression spring have simple to operate, detachable, repeatable profit
With the features such as, the cost and difficulty of construction of actual reinforcing can be greatly reduced using this deviation correction mechanism, improve tensioning reaction frame
Riser stressing conditions so that tensioning guide rod stress is more reasonable in stretching process；Existing pre-stress fibre sheet material is solved to reinforce
In technology, jack center of gravity is inconsistent with tensioning guide rod center of gravity, causes the tensioning guide rod in stretching process that eccentric force occurs simultaneously
Flexural deformation is produced, the problem that prestress value is impacted is applied to fibre sheet material.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is that the present invention removes the present invention looks up structural representation before anchoring after deviation correction mechanism in Fig. 1；
Fig. 3 is the present invention looks up structural representation after anchoring in Fig. 1；
Fig. 4 is the enlarged drawing of stretching end anchorage in Fig. 1；
Fig. 5 is A-A sectional views in Fig. 4；
Fig. 6 is the enlarged drawing of tensioning reaction frame in Fig. 1；
Fig. 7 is B-B sectional views in Fig. 6.
Specific embodiment
As shown in figs. 1-7, a kind of pre-stress fibre plate stretching end correction formula anchor of the invention, including stretching end anchor
Tool 4, tensioning reaction frame 9, tensioning guide rod 7, tensioning baffle plate 12 and jack 11；
The right-hand member of pre-stress fibre plate 1 is clamped in stretching end anchorage 4, and tensioning guide rod 7 is provided with two along left and right horizontal direction is parallel,
Stretching end anchorage 4, tensioning reaction frame 9 and tensioning baffle plate 12, are set on two tensioning guide rods 7 successively from left to right, and tensioning is led
The two ends of bar 7 are threaded with left locking nut 2 and right locking nut 13, the right-hand member of left locking nut 2 and stretching end anchorage 4 respectively
Left side is contacted, and the left end of right locking nut 13 is contacted with the left-hand face of tensioning baffle plate 12；The body of jack 11 and piston rod
End coordinates with the right-hand member of tensioning reaction frame 9 and the left-hand face top pressure of tensioning baffle plate 12 respectively；Stretching end anchorage 4 and tensioning baffle plate 12
Between be provided with deviation correction mechanism positioned at the lower section of jack 11.
Anchor connection structure is correspondingly arranged between the right side of stretching end anchorage 4 and the left side of tensioning reaction frame 9.
Tensioning reaction frame 9 includes the L-type platy structure being made up of fixed plate 17 and bearing plate 18, the right-hand member side of fixed plate 17
Along being fixedly connected with the upper end edge of bearing plate 18, the front and rear of fixed plate 17 is equipped with one along left and right horizontal direction to be used for
The right pilot hole 16 of tensioning guide rod 7 is worn, fixed plate 17 is fixedly connected on civil engineering structure beam by the second high-strength bolt 10
30 lower surface, the right lateral surface of bearing plate 18 coordinates with the piston rod end top pressure of jack 11.
Deviation correction mechanism includes tensioning eccentric adjusting bar 24, left adjusting nut 25, right adjusting nut 26, helical compression spring 27 and gear
Block 28, tensioning eccentric adjusting bar 24 passes through tensioning baffle plate 12, right tune parallel to tensioning guide rod 7, the right-hand member of tensioning eccentric adjusting bar 24
Section nut 26 is threaded in the right-hand member of tensioning eccentric adjusting bar 24 and is contacted with the right flank of tensioning baffle plate 12, tensioning eccentric adjusting bar
24 left ends pass through bearing plate 18, helical compression spring 27 and block 28 to be set on tensioning eccentric adjusting bar 24, left adjusting nut 25
Be threaded in the left end of tensioning eccentric adjusting bar 24 and contacted with the left side of block 28, the left end of helical compression spring 27 and right-hand member respectively with
The right side of block 28 and the left surface top pressure of bearing plate 18 coordinate.
Stretching end anchorage 4 includes upper anchor plate 14 and lower anchor plate 15, and the right-hand member of pre-stress fibre plate 1 is clamped in upper anchor plate
Between 14 and lower anchor plate 15, the first high-strength bolt arranged by several arrays between upper anchor plate 14 and lower anchor plate 15
5 are fastenedly connected, and the front portion and rear portion of binding face are equipped with along left and right horizontal direction between upper anchor plate 14 and lower anchor plate 15
One left pilot hole 3 for being used to wear tensioning guide rod 7.
The upper surface of the lower surface of upper anchor plate 14 and lower anchor plate 15 is evenly arranged with some anti-skidding grooves, and every anti-skidding
Length direction of the length direction of groove with pre-stress fibre plate 1 is vertical, and anti-skidding groove depth is 0.5mm, and adjacent two anti-skidding
Groove spacing is 4.8mm.
Anchor connection structure include one group of waist-shaped hole 6 and one group of circular hole 8 with internal tapping, upper anchor plate 14 and with lower anchoring
The left side edge alignment of plate 15, the length of the length less than lower anchor plate 15 of upper anchor plate 14, one group of waist-shaped hole 6 is then opened from preceding
The right side of lower anchor plate 15 is located at, the length direction of each waist-shaped hole 6 is set along left and right horizontal direction, and one group of circular hole 8 is certainly
Preceding to be then opened in the left side of fixed plate 17, each waist-shaped hole 6 is correspondingly arranged with a circular hole 8 or so.
Described deviation correction mechanism is provided with two sets, and two sets of deviation correction mechanisms are located in same level；The rigidity of helical compression spring 7
Coefficient, whereinE、AWithlIt is expressed as fibre sheet material elastic modelling quantity, area of section and length.Or helical compression spring 7
Stiffness coefficient consider the deformation of fibre sheet material, tensioning guide rod 7 and tensioning eccentric adjusting bar 24 and determine.
A kind of anchoring process of pre-stress fibre plate stretching end correction formula anchor, comprises the following steps：
1）, interception pre-stress fibre plate 1：Length according to civil engineering structure beam cuts the pre-stress fibre plate 1 of appropriate length,
The dimensions of pre-stress fibre plate 1 is：Width 50mm, thickness 1.4mm；
2）, processing and fabricating stretching end anchorage 4 upper anchor plate 14 and lower anchor plate 15, the length of upper anchor plate 14 is 220mm, under
The length of anchor plate 15 is 240mm, and the thickness of upper anchor plate 14 and lower anchor plate 15 is 12mm；
Processing and fabricating tensioning reaction frame 9, the L-type platy structure of fixed plate 17 and bearing plate 18 composition of tensioning reaction frame 9 is integrally
Bending is formed；
Two tensioning guide rods 7 of processing and fabricating, the diameter of tensioning guide rod 7 is respectively 12mm, 1m with length；
The tensioning eccentric adjusting bar 24 and block 28 of processing and fabricating deviation correction mechanism；
3）, the left end of pre-stress fibre plate 1 is clamped to using fixed anchorage 31 the left side lower surface of civil engineering structure beam 30；
The left end of pre-stress fibre plate 1 is placed between the upper anchor plate 14 of stretching end anchorage 4 and lower anchor plate 15, upper anchor plate 14
With in the anti-skidding groove on the lower surface of anchor plate 15 points of enhancing and the fastening frictional force of pre-stress fibre plate 1, the first high-strength spiral shell of screwing on
Bolt 5 makes anchor plate 14 and lower anchor plate 15 clamp pre-stress fibre plate 1；
Then tensioning reaction frame 9 is installed：For the determination of the position of tensioning reaction frame 9, setting applies pre- answering to pre-stress fibre plate 1
Force value is the 30% of ultimate strength, and the elongation 1.7% of pre-stress fibre plate 1 is actually stretched by calculating pre-stress fibre plate 1
Amount long is, one end original position of jack 11, edge are close to stretching end anchorage 4
Tensioning orientation measurement goes out 5.1cm to the right, and the position is the installation site of tensioning reaction frame 9, will using the second high-strength bolt 10
Fixed plate 17 is fixedly connected on the lower surface of civil engineering structure beam；
4）, install stretching end power-driven mechanism：By two tensioning guide rods 7 through in left pilot hole 3 and right pilot hole 16, then
Be placed on jack 11 between tensioning reaction frame 9 and tensioning baffle plate 12 through two right-hand members of tensioning guide rod 7 by tensioning baffle plate 12,
Screwed on left locking nut 2 in the left end of two tensioning guide rods 7, screwed on right locking nut 13 in the right-hand member of two tensioning guide rods 7；
5）, install deviation correction mechanism：By two tensioning eccentric adjusting bars 24 through between tensioning baffle plate 12 and bearing plate 18, first opening
The right-hand member of eccentric adjusting bar 24 is drawn to screw on right adjusting nut 26, then that helical compression spring 27 and block 28 be set to tensioning successively successively is inclined
On heart adjusting rod 24, screwed on left adjusting nut 25 in the left end of tensioning eccentric adjusting bar 24, adjustment helical compression spring 7 two ends respectively with
The right side of block 28 and the pressure on top surface of the left surface of bearing plate 18；
6）, stretch-draw prestressing force fiberboard 1：Jack 11 is connected to Hydraulic Station by fluid pressure line, drives jack 11, jack
11 pushing tow tensioning baffle plates 12, tensioning baffle plate 12 drives stretching end anchorage 4 synchronously to move right by tensioning guide rod 7, in spiral pressure
Under the two ends of spring 7 are to the effect of the top pressure of the right side of block 28 and the left surface of bearing plate 18, make the center line of jack 11 all the time with
Draw the keeping parallelism of guide rod 7, it is to avoid the generation of tensioning guide rod 7 eccentric force produces flexural deformation to apply fibre sheet material in stretching process
Prestressing value is impacted, so as to realize the tensioning to pre-stress fibre plate 1, stretching end anchorage 4 is found in stretching process
When one group of waist-shaped hole 6 on lower anchor plate 15 is covered in one group of circular hole 8 in the fixed plate 17 of tensioning reaction frame 9, hydraulic pressure is checked
Hydraulic pressure meter reading on standing and it is synchronous jack 11 is pressurizeed or is unloaded finely tune value of thrust, after collated correct complete right
The prestress application of pre-stress fibre plate 1；
7）, fixed stretching end anchorage 4：Keep jack 11 to be in and hold lotus state, sight the waist-shaped hole reserved on stretching end anchorage 4
6 with tensioning reaction frame 9 on the overlapping positions of circular hole 8, be attached using the 3rd high-strength bolt 19 and circular hole 8, tighten the 3rd high
After strength bolt 19, the redundance in waist-shaped hole 6 is filled with U-shaped key, completes the fixation to stretching end anchorage 4, is then unloaded simultaneously
Remove jack 11, tensioning guide rod 7 and tensioning baffle plate 12.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover in power of the invention
In the middle of sharp claimed range.
Claims (6)
1. a kind of pre-stress fibre plate stretching end correction formula anchor, it is characterised in that：Including stretching end anchorage（4）, tensioning
Reaction frame（9）, tensioning guide rod（7）, tensioning baffle plate（12）And jack（11）；
Pre-stress fibre plate（1）Right-hand member is clamped in stretching end anchorage（4）It is interior, tensioning guide rod（7）Set along left and right horizontal direction is parallel
There are two, stretching end anchorage（4）, tensioning reaction frame（9）With tensioning baffle plate（12）, it is set on two tensioning successively from left to right and leads
Bar（7）On, tensioning guide rod（7）Two ends be threaded with left locking nut respectively（2）With right locking nut（13）, left locking screw
It is female（2）Right-hand member and stretching end anchorage（4）Left side contacts, right locking nut（13）Left end and tensioning baffle plate（12）Left-hand face connects
Touch；Jack（11）Body and piston rod end respectively with tensioning reaction frame（9）Right-hand member and tensioning baffle plate（12）Left side table
Face top pressure coordinates；Stretching end anchorage and tensioning baffle plate（12）Between be provided with positioned at jack（11）The deviation correction mechanism of lower section；
Stretching end anchorage（4）Right side and tensioning reaction frame（9）Anchor connection structure is correspondingly arranged between left side；
Tensioning reaction frame（9）Including by fixed plate（17）And bearing plate（18）The L-type platy structure of composition, fixed plate（17）The right side
End edge edge and bearing plate（18）Upper end edge be fixedly connected, fixed plate（17）Front and rear is equipped with along left and right horizontal direction
One is used to wear tensioning guide rod（7）Right pilot hole（16）, fixed plate（17）By the second high-strength bolt（10）It is fixedly connected
In the lower surface of civil engineering structure beam, bearing plate（18）Right lateral surface and jack（11）Piston rod end top pressure match somebody with somebody
Close；
Deviation correction mechanism includes tensioning eccentric adjusting bar（24）, left adjusting nut（25）, right adjusting nut（26）, helical compression spring（27）
And block（28）, tensioning eccentric adjusting bar（24）Parallel to tensioning guide rod（7）, tensioning eccentric adjusting bar（24）Right-hand member passes through tensioning
Baffle plate（12）, right adjusting nut（26）It is threaded in tensioning eccentric adjusting bar（24）Right-hand member and with tensioning baffle plate（12）Right flank
Contact, tensioning eccentric adjusting bar（24）Left end passes through bearing plate（18）, helical compression spring（27）And block（28）It is set in tensioning
Eccentric adjusting bar（24）On, left adjusting nut（25）It is threaded in tensioning eccentric adjusting bar（24）Left end and and block（28）It is left
End contact, helical compression spring（27）Left end and right-hand member respectively with block（28）Right side and bearing plate（18）Left surface top pressure is matched somebody with somebody
Close.
2. a kind of pre-stress fibre plate stretching end correction formula anchor according to claim 1, it is characterised in that：Tensioning
End anchorage（4）Including upper anchor plate（14）With lower anchor plate（15）, pre-stress fibre plate（1）Right-hand member is clamped in upper anchor plate（14）
With lower anchor plate（15）Between, upper anchor plate（14）With lower anchor plate（15）Between by several arrays arrange it is first high-strength
Bolt（5）It is fastenedly connected, upper anchor plate（14）With lower anchor plate（15）Between binding face front portion and rear portion along left and right horizontal
Direction is equipped with one for wearing tensioning guide rod（7）Left pilot hole（3）；
Upper anchor plate（14）Lower surface and lower anchor plate（15）Upper surface be evenly arranged with some anti-skidding grooves, every is anti-skidding
The length direction of groove with pre-stress fibre plate（1）Length direction it is vertical, anti-skidding groove depth is 0.5mm, and adjacent two are prevented
Slip teeth line spacing is 4.8mm.
3. a kind of pre-stress fibre plate stretching end correction formula anchor according to claim 2, it is characterised in that：Anchoring
Attachment structure includes one group of waist-shaped hole（6）With one group of circular hole with internal tapping（8）, upper anchor plate（14）With with lower anchor plate（15）
Left side edge alignment, upper anchor plate（14）Length be less than lower anchor plate（15）Length, one group of waist-shaped hole（6）From it is preceding then
It is opened in lower anchor plate（15）Right side, each waist-shaped hole（6）Length direction along left and right horizontal direction set, one group of circle
Hole（8）Fixed plate is then opened in from preceding（17）Left side, each waist-shaped hole（6）With a circular hole（8）Left and right is correspondingly arranged.
4. a kind of pre-stress fibre plate stretching end correction formula anchor according to claim 3, it is characterised in that：It is described
Deviation correction mechanism be provided with two sets, two sets of deviation correction mechanisms are located in same level；
Helical compression spring（7）Stiffness coefficient, whereinE、AWithlIt is expressed as fibre sheet material elastic modelling quantity, area of section
With length.
5. a kind of pre-stress fibre plate stretching end correction formula anchor according to claim 3, it is characterised in that：It is described
Deviation correction mechanism be provided with two sets, two sets of deviation correction mechanisms are located in same level；The helical compression spring（7）Stiffness coefficient it is comprehensive
Close and consider fibre sheet material, tensioning guide rod（7）With tensioning eccentric adjusting bar（24）Deformation determine.
6. the anchoring process of anchor according to claim 4, it is characterised in that：Comprise the following steps：
1）, interception pre-stress fibre plate（1）：Length according to civil engineering structure beam cuts the pre-stress fibre plate of appropriate length
（1）, pre-stress fibre plate（1）Dimensions is：Width 50mm, thickness 1.4mm；
2）, processing and fabricating stretching end anchorage（4）Upper anchor plate（14）With lower anchor plate（15）, upper anchor plate（14）Length be
220mm, lower anchor plate（15）Length be 240mm, upper anchor plate（14）With lower anchor plate（15）Thickness be 12mm；
Processing and fabricating tensioning reaction frame（9）, tensioning reaction frame（9）Fixed plate（17）And bearing plate（18）The L-type tabular of composition
Structural integrity bending is formed；
Two tensioning guide rods of processing and fabricating（7）, tensioning guide rod（7）Diameter is respectively 12mm, 1m with length；
The tensioning eccentric adjusting bar of processing and fabricating deviation correction mechanism（24）And block（28）；
3）, using fixed anchorage by pre-stress fibre plate（1）Left end be clamped to the left side lower surface of civil engineering structure beam；Will
Pre-stress fibre plate（1）Left end be placed into stretching end anchorage（4）Upper anchor plate（14）With lower anchor plate（15）Between, upper anchor
Gu plate（14）With lower anchor plate（15）Point enhancing and pre-stress fibre plate in the anti-skidding groove on surface（1）Fastening frictional force, twist
Upper first high-strength bolt（5）Make anchor plate（14）With lower anchor plate（15）Clamp pre-stress fibre plate（1）；
Then tensioning reaction frame is installed（9）：For tensioning reaction frame（9）The determination of position, sets to pre-stress fibre plate（1）Apply
Prestressing value is the 30% of ultimate strength, pre-stress fibre plate（1）Elongation 1.7%, by calculating pre-stress fibre
Plate（1）Actual elongation is, with stretching end anchorage（4）Near jack（11）One end original position, along tensioning direction to the right
5.1cm is measured, the position is tensioning reaction frame（9）Installation site, use the second high-strength bolt（10）By fixed plate
（17）It is fixedly connected on the lower surface of civil engineering structure beam；
4）, install stretching end power-driven mechanism：By two tensioning guide rods（7）Through left pilot hole（3）With right pilot hole（16）
It is interior, then tensioning baffle plate（12）Through two tensioning guide rods（7）Right-hand member, by jack（11）It is placed on tensioning reaction frame（9）With
Tensioning baffle plate（12）Between, in two tensioning guide rods（7）Left end screw on left locking nut（2）, in two tensioning guide rods（7）'s
Right-hand member is screwed on right locking nut（13）；
5）, install deviation correction mechanism：By two tensioning eccentric adjusting bars（24）Through tensioning baffle plate（12）And bearing plate（18）Between,
First in tensioning eccentric adjusting bar（24）Right-hand member screw on right adjusting nut（26）, then successively helical compression spring（27）And block（28）
Tensioning eccentric adjusting bar is set to successively（24）On, in tensioning eccentric adjusting bar（24）Left end screw on left adjusting nut（25）, adjust
Whole helical compression spring（7）Two ends respectively with block（28）Right side and bearing plate（18）The pressure on top surface of left surface；
6）, stretch-draw prestressing force fiberboard（1）：Jack（11）Hydraulic Station is connected to by fluid pressure line, jack is driven（11）,
Jack（11）Pushing tow tensioning baffle plate（12）, tensioning baffle plate（12）By tensioning guide rod（7）Drive stretching end anchorage（4）It is synchronous to
Move right, in helical compression spring（7）Two ends are to block（28）Right side and bearing plate（18）Under the top pressure effect of left surface, make very heavy
Top（11）Center line all the time with tensioning guide rod（7）Keeping parallelism, it is to avoid the tensioning guide rod in stretching process（7）Generation bias is received
Power produces flexural deformation to apply prestress value to fibre sheet material and impacts, so as to realize to pre-stress fibre plate（1）Tensioning,
Stretching end anchorage is found in stretching process（4）Lower anchor plate（15）On one group of waist-shaped hole（6）It is covered in tensioning reaction frame（9）
Fixed plate（17）On one group of circular hole（8）When, the hydraulic pressure meter reading checked on Hydraulic Station is simultaneously synchronous to jack（11）Carry out
Pressurize or unload to finely tune value of thrust, completed to pre-stress fibre plate after collated correct（1）Prestress application；
7）, fixed stretching end anchorage（4）：Keep jack（11）In lotus state is held, stretching end anchorage is sighted（4）Above reserve
Waist-shaped hole（6）With tensioning reaction frame（9）On circular hole（8）Overlapping positions, use the 3rd high-strength bolt（19）With circular hole（8）Carry out
Connection, tightens the 3rd high-strength bolt（19）Afterwards, waist-shaped hole（6）Interior redundance is filled with U-shaped key, is completed to stretching end anchorage
（4）Fixation, then unload and remove jack（11）, tensioning guide rod（7）With tensioning baffle plate（12）.
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| CN201611244003.5A CN106760608B (en) | 2016-12-29 | 2016-12-29 | Prestressed fiberboard tensioning end deviation rectifying type anchoring device and anchoring method thereof |
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| GB2568537A (en) * | 2017-11-20 | 2019-05-22 | Ahmed Abubaker Kiari Mohamed | Support for a structure |
| CN111188286A (en) * | 2020-01-13 | 2020-05-22 | 上海悍马建筑科技有限公司 | Method for disassembling bonded prestressed carbon fiber plate |
| CN112282411A (en) * | 2020-09-30 | 2021-01-29 | 中国建筑第八工程局有限公司 | Beam bending shear reinforcing equipment utilizing prestressed carbon fiber cloth and reinforcing method thereof |
| CN114428015A (en) * | 2022-01-06 | 2022-05-03 | 中国建筑第八工程局有限公司 | Device and method for testing prestress loss of carbon fiber reinforced composite material rib |
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| CN111188286A (en) * | 2020-01-13 | 2020-05-22 | 上海悍马建筑科技有限公司 | Method for disassembling bonded prestressed carbon fiber plate |
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| CN114428015B (en) * | 2022-01-06 | 2024-02-06 | 中国建筑第八工程局有限公司 | Device and method for testing prestress loss of carbon fiber reinforced composite bar |
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| CN106760608B (en) | 2022-08-02 |
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