CN106760609A - Combination assembling correction formula pre-stress fibre sheet material tensioning equipment and its construction method - Google Patents
Combination assembling correction formula pre-stress fibre sheet material tensioning equipment and its construction method Download PDFInfo
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- CN106760609A CN106760609A CN201611246774.8A CN201611246774A CN106760609A CN 106760609 A CN106760609 A CN 106760609A CN 201611246774 A CN201611246774 A CN 201611246774A CN 106760609 A CN106760609 A CN 106760609A
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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
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Abstract
Combination assembling correction formula pre-stress fibre sheet material tensioning equipment, including stretching end anchorage, tensioning reaction frame, tensioning guide rod, tensioning baffle plate and jack；Stretching end anchorage includes U-shaped plate, upper anchor plate and lower anchor plate, pre-stress fibre sheet material right-hand member is clamped between upper anchor plate and lower anchor plate, tensioning reaction frame includes connecting plate, fixed plate and bearing plate, and anchor connection structure is correspondingly arranged between stretching end anchorage right side and tensioning reaction frame left side.The invention also discloses a kind of construction method for combining assembling correction formula pre-stress fibre sheet material tensioning equipment.The present invention makes tensioning guide rod center of gravity be consistent substantially with pre-stress fibre sheet material center of gravity, solves the problems, such as eccentric force in pre-stress fibre sheet material stretching process.Tensioning reaction frame, U-shaped plate and stretching end anchorage are connected for assembled, install convenient, are repeated and are utilized, and reduce engineering cost；Improve tensioning reaction frame riser stressing conditions so that tensioning guide rod stress is more reasonable in stretching process.
Description
Technical field
It is fine the invention belongs to civil engineering structure reinforcement and repair technical field, more particularly to combination assembling correction formula prestressing force
Dimension sheet material tensioning equipment and its construction method.
Background technology
Fibre sheet material in recent years（Including carbon fiber, basalt fibre etc.）With its high-strength light, corrosion-resistant, easy construction
Particular advantages, become research and the application focus in civil engineering structure reinforcement and repair field.Tradition is pasted fibre sheet material and is reinforced
The main weak point of technology, is the high-strength characteristic that cannot play fibre sheet material.Numerous studies show, paste fibre sheet material
Before be previously applied prestressing force and can effectively overcome this defect, i.e., fibre sheet material can increase substantially fibre plate after applying prestressing force
Material rate of utilization of strength.
In addition, existing pre-stress fibre sheet material anchorage mainly has waveform anchor, intermediate plate anchor, flat board anchor three major types, but no matter adopt
Reinforced with which kind of anchorage, be required to carry out tensioning using jack when applying prestressing force to fibre sheet material, due to jack
With certain volume, and actually reinforce by site space position limitation, it is impossible to which depth slot treatment is carried out to jack.Total
From the point of view of, there is deficiency following prominent in existing pre-stress fibre sheet material tension technology：1）Jack center of gravity is with tensioning guide rod center of gravity not
Unanimously, tensioning guide rod, tensioning reaction frame etc. are easily caused in stretching process to occur bending and deformation, and fibre sheet material prestress application is made
Into adverse effect；2）There is bias, easy damaged in fibre sheet material stretching process between tensioning guide rod center of gravity and fibre sheet material center of gravity
Fibre sheet material；3）Tensioning reaction frame structure bulky, complex operation is cumbersome, and strengthening construction needs overall indwelling in structure after terminating
Can not reuse, and influence structure attractive in appearance.
The content of the invention
In order to solve the weak point in existing pre-stress fibre sheet material stretching end anchoring process, the invention provides one kind
Compact conformation, assembling is simple, ensure tensioning guide rod and tensioning reaction frame maintains a good state, tensioning reaction frame is easy to dismounting to repeat
Using and can avoid stretching process eccentric force problem combination assemble correction formula pre-stress fibre sheet material tensioning equipment and its
Construction method.
To achieve the above object, concrete scheme of the invention is as follows：One kind combination assembling correction formula pre-stress fibre sheet material
Tensioning equipment, including stretching end anchorage, tensioning reaction frame, tensioning guide rod 7, tensioning baffle plate 12 and jack 11；
The right-hand member of pre-stress fibre sheet material 1 is clamped in stretching end anchorage, and tensioning guide rod 7 is provided with two along left and right horizontal direction is parallel
Root, stretching end anchorage, tensioning reaction frame 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 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 tensioning reaction frame right-hand member and the left-hand face top pressure of tensioning baffle plate 12 respectively；Stretching end anchorage and tensioning baffle plate 12 it
Between be provided with deviation correction mechanism positioned at the lower section of jack 11；
Anchor connection structure is correspondingly arranged between stretching end anchorage right side and tensioning reaction frame left side；
Tensioning reaction frame includes connecting plate 21, fixed plate 17 and bearing plate 18, and the front and rear of connecting plate 21 is along left and right horizontal
Direction is equipped with a right pilot hole 16 for wearing tensioning guide rod 7, and connecting plate 21 is fixed by the second high-strength bolt 10 and connected
The lower surface of civil engineering structure beam is connected on, the right-hand member edge of fixed plate 17 is fixedly connected composition with the upper end edge of bearing plate 18
L-type platy structure, fixed plate 17 is fixedly installed on the lower surface of connecting plate 21 by the 3rd high-strength bolt 22, bearing plate 18
Right lateral surface 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 includes U-shaped plate 19, upper anchor plate 14 and lower anchor plate 15, the clamping of the right-hand member of pre-stress fibre sheet material 1
Between upper anchor plate 14 and lower anchor plate 15, arranged by several arrays between upper anchor plate 14 and lower anchor plate 15
One high-strength bolt 5 is fastenedly connected, and the openend level of U-shaped plate 19 is set to the right, and the front and rear of U-shaped plate 19 is along left and right horizontal
Direction is equipped with a left pilot hole 3 for wearing tensioning guide rod 7, and upper anchor plate 14 and lower anchor plate 15 are located at U-shaped plate 19
Interior, the U-shaped inwall of U-shaped plate 19 offers left side edge, the front side edge of U-shaped locating slot 23, upper anchor plate 14 and lower anchor plate 15
Edge and rear lateral edge are located in U-shaped locating slot 23 respectively, and the middle part upper side of U-shaped plate 19 is offered for through pre-stress fibre
The upper surface of the groove 20 of sheet material 1, the lower surface of upper anchor plate 14 and lower anchor plate 15 is evenly arranged with some anti-skidding grooves, often
Length direction of the length direction of the anti-skidding groove of bar with pre-stress fibre sheet material 1 is vertical, and anti-skidding groove depth is 0.5mm, adjacent
Two anti-skidding groove spacing are 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 connecting plate 21, 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、AWithlBe 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 for combining assembling correction formula pre-stress fibre sheet material tensioning equipment, comprises the following steps：
1）, interception pre-stress fibre sheet material 1：Length according to civil engineering structure beam cuts the pre-stress fibre piece of appropriate length
Material 1, the dimensions of pre-stress fibre sheet material 1 is：Width 50mm, thickness 1.4mm；
2）, the U-shaped plate 19 of processing and fabricating stretching end anchorage, upper anchor plate 14 and lower anchor plate 15, the length of upper anchor plate 14 is
220mm, the length of lower anchor plate 15 is 240mm, and the thickness of upper anchor plate 14 and lower anchor plate 15 is 12mm；
The connecting plate 21 of processing and fabricating tensioning reaction frame, fixed plate 17 and bearing plate 18, the fixed plate 17 of tensioning reaction frame and hold
The L-type platy structure one bending that pressing plate 18 is constituted 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 sheet material 1 is clamped to using fixed anchorage the left side lower surface of civil engineering structure beam；Will
The left end of pre-stress fibre sheet material 1 is placed between the upper anchor plate 14 of stretching end anchorage and lower anchor plate 15, upper anchor plate 14
With the fastening frictional force of enhancing in the anti-skidding groove on the lower surface of anchor plate 15 point and pre-stress fibre sheet material 1, screw on first high-strength
Bolt 5 makes anchor plate 14 and lower anchor plate 15 clamp pre-stress fibre sheet material 1, upper anchor plate 14 and lower anchor plate 15 by U
The right-hand member open-mouth of template 19 is pushed into U-shaped locating slot 23 to the left, and pre-stress fibre sheet material 1 is passed through in pre-stress fibre sheet material 1
Groove 20 on the upside of portion；
Then tensioning reaction frame is installed：For the determination of tensioning counter-force rack position, setting applies pre- answering to pre-stress fibre sheet material 1
Force value is the 30% of ultimate strength, and the elongation 1.7% of pre-stress fibre sheet material 1 is real by calculating pre-stress fibre sheet material 1
Border elongation is, one end original position of jack 11, edge are close to stretching end anchorage
Tensioning orientation measurement goes out 5.1cm to the right, and the position is the installation site of tensioning reaction frame, first using the second high-strength bolt 10
Connecting plate 21 is fixedly connected on the lower surface of civil engineering structure beam, then reuses the 3rd high-strength bolt 22 and fixed plate 17 is consolidated
Surely it is arranged on the lower surface of connecting plate 21；
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 bearing plate 18 and tensioning baffle plate 12, two by tensioning baffle plate 12 through two right-hand members of tensioning guide rod 7
The left end of root tensioning guide rod 7 is screwed on left locking nut 2, is 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 fibre sheet material 1：Jack 11 is connected to Hydraulic Station by fluid pressure line, drives jack 11, very heavy
11 pushing tow tensioning baffle plates 12 are pushed up, tensioning baffle plate 12 drives the U-shaped plate 19 of stretching end anchorage to move right by tensioning guide rod 7, on
Anchor plate 14 and lower anchor plate 15 U-shaped plate 19 U-shaped locating slot 23 it is spacing under moved right as U-shaped plate 19 is synchronous,
Under the two ends of helical compression spring 7 are to the top pressure effect of the right side of block 28 and the left surface of bearing plate 18, the center line of jack 11 is set to begin
Eventually with the keeping parallelism of tensioning guide rod 7, it is to avoid tensioning guide rod 7 occurs eccentric force generation flexural deformation to fiber in stretching process
Sheet material applies prestress value and impacts, so as to realize the tensioning to pre-stress fibre sheet material 1, stretching end is found in stretching process
When one group of waist-shaped hole 6 on the lower anchor plate 15 of anchorage is covered in one group of circular hole 8 in the fixed plate 17 of tensioning reaction frame, check
Hydraulic pressure meter reading on Hydraulic Station and it is synchronous jack 11 pressurizeed or unloaded finely tune value of thrust, it is i.e. complete after collated correct
The prestress application of paired pre-stress fibre sheet material 1；
7）, fixed stretching end anchorage：Keep jack 11 to be in and hold lotus state, sight the waist-shaped hole 6 reserved on stretching end anchorage
The overlapping positions of circular hole 8 with connecting plate 21, are attached using the 4th high-strength bolt and circular hole 8, tighten the 4th high-strength bolt
Afterwards, the redundance in waist-shaped hole 6 is filled with U-shaped key, completes the fixation to stretching end anchorage, then unloads and remove jack
11st, U-shaped plate 19, tensioning guide rod 7, deviation correction mechanism and tensioning baffle plate 12.
In sum, the present invention is applied to civil engineering structure reparation field, with existing pre-stress fibre sheet material stretching end
Anchoring process is compared to advantage following prominent：
1st, the present invention positions and installs tensioning counter-force using the linear relationship between pre-stress fibre sheet material stretching force and elongation
Frame；Effective control that the stretching end anchor for being used passes through pre-stress fibre sheet material elongation control realization prestressed stretch-draw
System so that fibre sheet material prestress application process is more convenient.
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, fibre sheet material applies to be used after prestressing force terminates the 4th high-strength bolt by stretching end anchorage and tensioning reaction frame
The reserved internal tapping circular hole connection of fixed plate.Can effectively be protected using the long-term prestressing force of anchoring process fibre sheet material
Card, anchoring process is more reliable and more stable, and fibre sheet material prestressed stretch-draw i.e. dismountable tensioning guide rod after terminating overcomes existing pre-
The durability deficiency problem of stress fiber sheet material stretching end tensioning guide rod anchoring process generally existing, efficiently solves tensioning guide rod
Long service is vulnerable to external environment influence, once corrosion will cause the excessive problem of fibre sheet material loss of prestress.
3rd, pre-stress fibre sheet material can usually run into tensioning guide rod center of gravity and pre-stress fibre sheet material weight in stretching process
There is bias between the heart, damage the situation of pre-stress fibre sheet material, be placed on for tensioning guide rod by the U-shaped plate that the application is used opens
Pull end anchorage outside, makes tensioning guide rod center of gravity be consistent substantially with pre-stress fibre sheet material center of gravity, efficiently solves prestressing force
Eccentric force problem in fibre sheet material stretching process.
4th, the L-type platy structure assembling that tensioning reaction frame of the present invention is made up of connecting plate and fixed plate and bearing plate
Formula is connected, and it is dismountable that stretch-draw prestressing force fibre sheet material terminates after-poppet plate, and recycling reduces engineering cost.
5th, U-shaped plate of the present invention with stretching end anchorage for assembled is connected, install convenient, stretch-draw prestressing force fibre sheet material
U-shaped plate is dismountable after end, recycling, reduces engineering cost.The setting of U-shaped locating slot 23, limits stretching end anchorage
Position, it is to avoid stretching end anchorage departs from U-shaped plate in tensioning operation.
6th, 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.
7th, the present invention in deviation correction mechanism use tensioning eccentric adjusting bar, helical compression spring have it is simple to operate, detachable,
The features such as repeatable utilization, the cost and difficulty of construction of actual reinforcing can be greatly reduced using this deviation correction mechanism, improve and open
Draw reaction frame riser stressing conditions so that tensioning guide rod stress is more reasonable in stretching process；Solve existing pre-stress fibre
In sheet material reinforcement technique, jack center of gravity is inconsistent with tensioning guide rod center of gravity, causes the tensioning guide rod in stretching process to occur inclined
Heart stress simultaneously produces flexural deformation, and 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；
Remove the present invention looks up structural representation before anchoring after deviation correction mechanism in Fig. 2 Fig. 1；
Fig. 3 is the upward view of Fig. 2；
Fig. 4 is the enlarged drawing of U-shaped plate in Fig. 2；
Fig. 5 is A-A sectional views in Fig. 4；
Fig. 6 is B-B sectional views in Fig. 4；
Fig. 7 is the enlarged drawing of connecting plate in the present invention；
Fig. 8 is C-C sectional views in Fig. 7
Fig. 9 is the enlarged drawing of fixed plate and bearing plate in the present invention；
Figure 10 is D-D sectional views in Fig. 9；
Figure 11 is the horizontal cross-section schematic diagram of upper anchor plate and lower anchor plate in the present invention.
Specific embodiment
As Figure 1-Figure 11, a kind of combination assembling correction formula pre-stress fibre sheet material tensioning equipment of the invention, including
Stretching end anchorage, tensioning reaction frame, tensioning guide rod 7, tensioning baffle plate 12 and jack 11；
The right-hand member of pre-stress fibre sheet material 1 is clamped in stretching end anchorage, and tensioning guide rod 7 is provided with two along left and right horizontal direction is parallel
Root, stretching end anchorage, tensioning reaction frame 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 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 tensioning reaction frame right-hand member and the left-hand face top pressure of tensioning baffle plate 12 respectively；Stretching end anchorage and tensioning baffle plate 12 it
Between be provided with deviation correction mechanism positioned at the lower section of jack 11；
Anchor connection structure is correspondingly arranged between stretching end anchorage right side and tensioning reaction frame left side；
Tensioning reaction frame includes connecting plate 21, fixed plate 17 and bearing plate 18, and the front and rear of connecting plate 21 is along left and right horizontal
Direction is equipped with a right pilot hole 16 for wearing tensioning guide rod 7, and connecting plate 21 is fixed by the second high-strength bolt 10 and connected
The lower surface of civil engineering structure beam 30 is connected on, the right-hand member edge of fixed plate 17 is fixedly connected structure with the upper end edge of bearing plate 18
Into L-type platy structure, fixed plate 17 is fixedly installed on the lower surface of connecting plate 21, bearing plate 18 by the 3rd high-strength bolt 22
The piston rod end top pressure of right lateral surface and jack 11 coordinate；
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 includes U-shaped plate 19, upper anchor plate 14 and lower anchor plate 15, the clamping of the right-hand member of pre-stress fibre sheet material 1
Between upper anchor plate 14 and lower anchor plate 15, arranged by several arrays between upper anchor plate 14 and lower anchor plate 15
One high-strength bolt 5 is fastenedly connected, and the openend level of U-shaped plate 19 is set to the right, and the front and rear of U-shaped plate 19 is along left and right horizontal
Direction is equipped with a left pilot hole 3 for wearing tensioning guide rod 7, and upper anchor plate 14 and lower anchor plate 15 are located at U-shaped plate 19
Interior, the U-shaped inwall of U-shaped plate 19 offers left side edge, the front side edge of U-shaped locating slot 23, upper anchor plate 14 and lower anchor plate 15
Edge and rear lateral edge are located in U-shaped locating slot 23 respectively, and the middle part upper side of U-shaped plate 19 is offered for through pre-stress fibre
The upper surface of the groove 20 of sheet material 1, the lower surface of upper anchor plate 14 and lower anchor plate 15 is evenly arranged with some anti-skidding grooves, often
Length direction of the length direction of the anti-skidding groove of bar with pre-stress fibre sheet material 1 is vertical, and anti-skidding groove depth is 0.5mm, adjacent
Two anti-skidding groove spacing are 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 connecting plate 21, 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、AWithlBe 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 for combining assembling correction formula pre-stress fibre sheet material tensioning equipment, comprises the following steps：
1）, interception pre-stress fibre sheet material 1：Length according to civil engineering structure beam 30 cuts the pre-stress fibre of appropriate length
Sheet material 1, the dimensions of pre-stress fibre sheet material 1 is：Width 50mm, thickness 1.4mm；
2）, the U-shaped plate 19 of processing and fabricating stretching end anchorage, upper anchor plate 14 and lower anchor plate 15, the length of upper anchor plate 14 is
220mm, the length of lower anchor plate 15 is 240mm, and the thickness of upper anchor plate 14 and lower anchor plate 15 is 12mm；
The connecting plate 21 of processing and fabricating tensioning reaction frame, fixed plate 17 and bearing plate 18, the fixed plate 17 of tensioning reaction frame and hold
The L-type platy structure one bending that pressing plate 18 is constituted 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 sheet material 1 is clamped to using fixed anchorage 31 the left side following table of civil engineering structure beam 30
Face；The left end of pre-stress fibre sheet material 1 is placed between the upper anchor plate 14 of stretching end anchorage and lower anchor plate 15, upper anchoring
The fastening frictional force of enhancing and pre-stress fibre sheet material 1 in the anti-skidding groove on plate 14 and the lower surface of anchor plate 15 point, screws on first
High-strength bolt 5 makes anchor plate 14 and lower anchor plate 15 clamp pre-stress fibre sheet material 1, upper anchor plate 14 and lower anchor plate 15
It is pushed into the left in U-shaped locating slot 23 by the right-hand member open-mouth of U-shaped plate 19, pre-stress fibre sheet material 1 passes through pre-stress fibre sheet material 1
Groove 20 on the upside of middle part；
Then tensioning reaction frame is installed：For the determination of tensioning counter-force rack position, setting applies pre- answering to pre-stress fibre sheet material 1
Force value is the 30% of ultimate strength, and the elongation 1.7% of pre-stress fibre sheet material 1 is real by calculating pre-stress fibre sheet material 1
Border elongation is, with stretching end anchorage near jack 11 one end original position, along to
Right tensioning orientation measurement goes out 5.1cm, and the position is the installation site of tensioning reaction frame, first using the second high-strength bolt 10 even
Fishplate bar 21 is fixedly connected on the lower surface of civil engineering structure beam 30, then reuses the 3rd high-strength bolt 22 and fixed plate 17 is consolidated
Surely it is arranged on the lower surface of connecting plate 21；
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 bearing plate 18 and tensioning baffle plate 12, two by tensioning baffle plate 12 through two right-hand members of tensioning guide rod 7
The left end of root tensioning guide rod 7 is screwed on left locking nut 2, is 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 fibre sheet material 1：Jack 11 is connected to Hydraulic Station by fluid pressure line, drives jack 11, very heavy
11 pushing tow tensioning baffle plates 12 are pushed up, tensioning baffle plate 12 drives the U-shaped plate 19 of stretching end anchorage to move right by tensioning guide rod 7, on
Anchor plate 14 and lower anchor plate 15 U-shaped plate 19 U-shaped locating slot 23 it is spacing under moved right as U-shaped plate 19 is synchronous,
Under the two ends of helical compression spring 7 are to the top pressure effect of the right side of block 28 and the left surface of bearing plate 18, the center line of jack 11 is set to begin
Eventually with the keeping parallelism of tensioning guide rod 7, it is to avoid tensioning guide rod 7 occurs eccentric force generation flexural deformation to fiber in stretching process
Sheet material applies prestress value and impacts, so as to realize the tensioning to pre-stress fibre sheet material 1, stretching end is found in stretching process
When one group of waist-shaped hole 6 on the lower anchor plate 15 of anchorage is covered in one group of circular hole 8 in the fixed plate 17 of tensioning reaction frame, check
Hydraulic pressure meter reading on Hydraulic Station and it is synchronous jack 11 pressurizeed or unloaded finely tune value of thrust, it is i.e. complete after collated correct
The prestress application of paired pre-stress fibre sheet material 1；
7）, fixed stretching end anchorage：Keep jack 11 to be in and hold lotus state, sight the waist-shaped hole 6 reserved on stretching end anchorage
The overlapping positions of circular hole 8 with connecting plate 21, are attached using the 4th high-strength bolt and circular hole 8, tighten the 4th high-strength bolt
Afterwards, the redundance in waist-shaped hole 6 is filled with U-shaped key, completes the fixation to stretching end anchorage, then unloads and remove jack
11st, U-shaped plate 19, tensioning guide rod 7, deviation correction mechanism 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. correction formula pre-stress fibre sheet material tensioning equipment is assembled in combination, it is characterised in that：Including stretching end anchorage, tensioning counter-force
Frame, tensioning guide rod（7）, tensioning baffle plate（12）And jack（11）；
Pre-stress fibre sheet material（1）Right-hand member is clamped in stretching end anchorage, tensioning guide rod（7）It is provided with along left and right horizontal direction is parallel
Two, stretching end anchorage, tensioning reaction frame and tensioning baffle plate（12）, it is set on two tensioning guide rods successively from left to right（7）On,
Tensioning guide rod（7）Two ends be threaded with left locking nut respectively（2）With right locking nut（13）, left locking nut（2）It is right
End contacts with stretching end anchorage left side, right locking nut（13）Left end and tensioning baffle plate（12）Left-hand face is contacted；Jack
（11）Body and piston rod end respectively with tensioning reaction frame right-hand member and tensioning baffle plate（12）Left-hand face top pressure coordinates；
Pull end anchorage and tensioning baffle plate（12）Between be provided with positioned at jack（11）The deviation correction mechanism of lower section；
Anchor connection structure is correspondingly arranged between stretching end anchorage right side and tensioning reaction frame left side；
Tensioning reaction frame includes connecting plate（21）, fixed plate（17）And bearing plate（18）, connecting plate（21）Front and rear edge
Left and right horizontal direction is equipped with one for wearing tensioning guide rod（7）Right pilot hole（16）, connecting plate（21）It is high by second
Strength bolt（10）It is fixedly connected on the lower surface of civil engineering structure beam, fixed plate（17）Right-hand member edge and bearing plate（18）'s
Upper end edge is fixedly connected the L-type platy structure of composition, fixed plate（17）By the 3rd high-strength bolt（22）The company of being fixedly installed on
Fishplate bar（21）Lower surface, bearing plate（18）Right lateral surface and jack（11）Piston rod end top pressure coordinate；
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. correction formula pre-stress fibre sheet material tensioning equipment is assembled in combination according to claim 1, it is characterised in that：Tensioning
End anchorage includes U-shaped plate（19）, upper anchor plate（14）With lower anchor plate（15）, pre-stress fibre sheet material（1）On right-hand member is clamped in
Anchor plate（14）With lower anchor plate（15）Between, upper anchor plate（14）With lower anchor plate（15）Between arranged by several arrays
The first high-strength bolt（5）It is fastenedly connected, U-shaped plate（19）Openend level set to the right, U-shaped plate（19）Front and rear
One is equipped with for wearing tensioning guide rod along left and right horizontal direction（7）Left pilot hole（3）, upper anchor plate（14）With lower anchoring
Plate（15）Positioned at U-shaped plate（19）It is interior, U-shaped plate（19）U-shaped inwall offer U-shaped locating slot（23）, upper anchor plate（14）With under
Anchor plate（15）Left side edge, front side edge edge and rear lateral edge be located at U-shaped locating slot respectively（23）It is interior, U-shaped plate（19）In
Portion's upper side is offered for through pre-stress fibre sheet material（1）Groove（20）, upper anchor plate（14）Lower surface and lower anchoring
Plate（15）Upper surface be evenly arranged with some anti-skidding grooves, every length direction of anti-skidding groove with pre-stress fibre piece
Material（1）Length direction it is vertical, anti-skidding groove depth is 0.5mm, and adjacent two anti-skidding groove spacing are 4.8mm.
3. correction formula pre-stress fibre sheet material tensioning equipment is assembled in combination 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）Connecting plate is then opened in from preceding（21）Left side, each waist-shaped hole（6）With a circular hole（8）Left and right is correspondingly arranged.
4. correction formula pre-stress fibre sheet material tensioning equipment is assembled in combination 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、AWithlBe expressed as fibre sheet material elastic modelling quantity, area of section with
Length.
5. correction formula pre-stress fibre sheet material tensioning equipment is assembled in combination 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 tensioning equipment according to claim 4, it is characterised in that：Comprise the following steps：
1）, interception pre-stress fibre sheet material（1）：Length according to civil engineering structure beam cuts the pre-stress fibre of appropriate length
Sheet material（1）, pre-stress fibre sheet material（1）Dimensions is：Width 50mm, thickness 1.4mm；
2）, processing and fabricating stretching end anchorage U-shaped plate（19）, 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；
The connecting plate of processing and fabricating tensioning reaction frame（21）, fixed plate（17）And bearing plate（18）, the fixed plate of tensioning reaction frame
（17）And bearing plate（18）The L-type platy structure one bending of composition 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 sheet material（1）Left end be clamped to the left side lower surface of civil engineering structure beam；
By pre-stress fibre sheet material（1）Left end be placed into the upper anchor plate of stretching end anchorage（14）With lower anchor plate（15）Between, on
Anchor plate（14）With lower anchor plate（15）Point enhancing and pre-stress fibre sheet material in the anti-skidding groove on surface（1）Fastening friction
Power, the first high-strength bolt of screwing on（5）Make anchor plate（14）With lower anchor plate（15）Clamp pre-stress fibre sheet material（1）, upper
Anchor plate（14）With lower anchor plate（15）By U-shaped plate（19）Right-hand member open-mouth is pushed into U-shaped locating slot to the left（23）It is interior, prestressing force
Fibre sheet material（1）Through pre-stress fibre sheet material（1）Groove on the upside of middle part（20）；
Then tensioning reaction frame is installed：For the determination of tensioning counter-force rack position, set to pre-stress fibre sheet material（1）Apply pre-
Stress value is the 30% of ultimate strength, pre-stress fibre sheet material（1）Elongation 1.7%, by calculating pre-stress fibre piece
Material（1）Actual elongation is, with stretching end anchorage near jack（11）'s
One end original position, 5.1cm is gone out along tensioning orientation measurement to the right, and the position is the installation site of tensioning reaction frame, first uses
Second high-strength bolt（10）Connecting plate（21）The lower surface of civil engineering structure beam is fixedly connected on, the 3rd is then reused high
Strength bolt（22）Fixed plate（17）It is fixedly installed on connecting plate（21）Lower surface；
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 bearing plate（18）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）Right-hand member
Screw 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 fibre sheet material（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 the U of stretching end anchorage
Template（19）Move right, upper anchor plate（14）With lower anchor plate（15）In U-shaped plate（19）U-shaped locating slot（23）It is spacing under
With U-shaped plate（19）Synchronously move right, in helical compression spring（7）Two ends are to block（28）Right side and bearing plate（18）Left surface
Top pressure effect under, make jack（11）Center line all the time with tensioning guide rod（7）Keeping parallelism, it is to avoid opened in stretching process
Draw guide rod（7）Generation eccentric force produces flexural deformation to apply prestress value to fibre sheet material and impacts, so as to realize to pre-
Stress fiber sheet material（1）Tensioning, in stretching process find stretching end anchorage lower anchor plate（15）On one group of waist-shaped hole（6）
It is covered in the fixed plate of tensioning reaction frame（17）On one group of circular hole（8）When, the hydraulic pressure meter reading checked on Hydraulic Station is simultaneously synchronous
To jack（11）Pressurizeed or unloaded to finely tune value of thrust, completed to pre-stress fibre sheet material after collated correct（1）'s
Prestress application；
7）, fixed stretching end anchorage：Keep jack（11）In lotus state is held, the waist-shaped hole reserved on stretching end anchorage is sighted
（6）With connecting plate（21）On circular hole（8）Overlapping positions, use the 4th high-strength bolt and circular hole（8）It is attached, tightens the 4th
After high-strength bolt, waist-shaped hole（6）Interior redundance is filled with U-shaped key, completes the fixation to stretching end anchorage, is then unloaded simultaneously
Remove jack（11）, U-shaped plate（19）, tensioning guide rod（7）, deviation correction mechanism and tensioning baffle plate（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246774.8A CN106760609B (en) | 2016-12-29 | 2016-12-29 | Combined assembly deviation-rectifying type prestressed fiber sheet tensioning device and construction method thereof |
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|---|---|---|---|
| CN201611246774.8A CN106760609B (en) | 2016-12-29 | 2016-12-29 | Combined assembly deviation-rectifying type prestressed fiber sheet tensioning device and construction method thereof |
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| CN106760609B CN106760609B (en) | 2022-08-02 |
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