CN108612313A - A kind of prestressing force intelligent tensioning autocontrol method - Google Patents
A kind of prestressing force intelligent tensioning autocontrol method Download PDFInfo
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- CN108612313A CN108612313A CN201810454743.4A CN201810454743A CN108612313A CN 108612313 A CN108612313 A CN 108612313A CN 201810454743 A CN201810454743 A CN 201810454743A CN 108612313 A CN108612313 A CN 108612313A
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- tensioning
- tool
- anchor
- presstressed reinforcing
- reinforcing steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention discloses a kind of prestressing force intelligent tensioning autocontrol method, includes the steps that being used for tensioning equipment installation；The step of stretching construction is carried out to presstressed reinforcing steel for tensioning equipment；The step of locking construction is carried out to the presstressed reinforcing steel for tensioning equipment；The step of stretching construction intelligent control being carried out for controller.Advantageous effect is, it is first worked by the tensioning pars contractilis of two-way jack, by tension of prestressed tendon to predetermined stress value, then top pressure pars contractilis works, push reversed pressure plate top pressure work chuck, to make work anchor clamp presstressed reinforcing steel, the sliding of presstressed reinforcing steel can be reduced, relative to traditional tensioning system, this programme can reduce stress loss, avoid excessive tensioning, preferably control stretching process and improvement stretch-draw effect, realize that intelligent tensioning is monitored and controlled in conjunction with controller, intelligence is convenient, and control accuracy is high.
Description
Technical field
The present invention relates to building and technical field of bridge construction, and in particular to a kind of prestressing force intelligent tensioning side of automatically controlling
Method.
Background technology
Prestressing stretching technique extensive use in building and bridge construction can slow down concrete using pre-stress construction
The appearance of matrix cracking and extension process, prolong the service life.However, tensioning construction process is to material and construction technology
Requirement it is very high, be easier to the problem of loss of prestress occur.At the end of prestressing force loads, since the rebound of presstressed reinforcing steel can just make
It fastens between fixture and anchor ring, is lost so as to cause the prestressing force of load.It is damaged in work progress to solve prestressing force at present
The maximum stress of the problem of mistake, the load of the method for often requiring to use ultra stretching, i.e. tensioning are more than design value.However ultra stretching side
Method does not often know stress loss amount, it cannot be guaranteed that final stress meets design requirement, and easily presstressed reinforcing steel occurs and breaks or damage
Problem can not be solved perfectly in the situation of bad anchorage, ultra stretching method.On the other hand, in engineering, a prestressed concrete beam
Usually need more presstressed reinforcing steels of simultaneous tension, the assembly of presstressed reinforcing steel and anchor ring very inconvenient on body.Therefore, it still needs to be improved
The structure design of prestressed anchor and tensioning system provides conveniently for tensioning construction.
Invention content
In order to solve the above technical problems, the present invention provides a kind of prestressed stretch-draw intellectual monitoring control system.
Technical solution is as follows：
A kind of prestressing force intelligent tensioning autocontrol method, key be include：The step of being installed for tensioning equipment；
The step of stretching construction is carried out to presstressed reinforcing steel for tensioning equipment；Locking is carried out for tensioning equipment to the presstressed reinforcing steel to apply
The step of work；The step of stretching construction intelligent control being carried out for controller.
Wherein, tensioning equipment includes anchor plate component, work anchor assemblies, reversed pressure plate, jack and tool anchor assemblies；
Further include at least one presstressed reinforcing steel, the anchor plate component, work anchor assemblies, reversed pressure plate, jack and moveable anchor group
Part is abutted along tensioning direction and is set on all presstressed reinforcing steels successively.
It further describing, the jack is two-way jack comprising cylinder body is set on the cylinder body there are two pars contractilis,
The telescopic direction of two pars contractilis is on the contrary, two pars contractilis are respectively formed tensioning pars contractilis and top pressure pars contractilis；Institute
The collapsing length for stating two pars contractilis of jack is controlled by the controller；The moveable anchor is installed on the tensioning pars contractilis
Component is equipped with the reversed pressure plate on the top pressure pars contractilis；The first displacement biography is provided on the tensioning pars contractilis
Sensor, first displacement sensor are connect with the first displacement input terminal of the controller；The work anchor assemblies include work
Make anchor ring and work chuck, work anchor hole is equipped on the work anchor ring, the work chuck matches with the work anchor hole
It closes；The work anchor ring includes backing plate face and pressure-bearing surface, and the backing plate face is against the anchor plate component, the pressure-bearing surface direction
The reversed pressure plate, the work chuck are inserted into the work anchor hole from the pressure-bearing surface, and the top pressure pars contractilis pushes institute
State the chuck that works described in reversed pressure plate top pressure；It is provided with second displacement sensor on the top pressure pars contractilis, described second
Displacement sensor is connect with the second displacement input terminal of the controller.
Using the above design, it the advantage is that presstressed reinforcing steel sequentially passes through anchor plate component, work anchor assemblies, reversed compression
Plate, jack and tool anchor assemblies, each work package cooperate, and realize that the clamping of presstressed reinforcing steel, the tensioning of two-way jack are stretched
Contracting portion first works, and by tension of prestressed tendon to predetermined stress value, then the work of top pressure pars contractilis, pushes reversed pressure plate top pressure work
Make chuck, to make work anchor clamp presstressed reinforcing steel, the sliding of presstressed reinforcing steel can be reduced, relative to traditional tensioning system, originally
Scheme can reduce stress loss, avoid excessive tensioning, preferably control stretching process and improve stretch-draw effect.By very heavy
Top carries out tensioning to an at least presstressed reinforcing steel, and the course of work of jack is under control of the controller, two pars contractilis
Displacement automatic monitoring, realize the effect of real-time control, improve tensioning reliability.
Wherein, the reversed pressure plate includes pressure plate ontology, which includes fitting surface and pressure surface, described
Fitting surface is equipped with compression boss, the compression boss towards the inner end of the retracting cylinder of the top pressure pars contractilis, the pressure surface
It is equipped with presstressed reinforcing steel at center to perforate, the both ends of presstressed reinforcing steel perforation are opened on the end face of the compression boss and described respectively
Fitting surface；The pressure-bearing surface of the work anchor ring is equipped with compression corresponding with the compression boss and docks blind hole, the compression pair
Hole bottom is connect through there is the work anchor hole, which is truncated cone-shaped, the larger one end open of the work anchor hole internal diameter
In in compression docking blind hole, the smaller one end open of the work anchor hole internal diameter is in the backing plate face；The work chuck
Outer wall is the truncated cone-shaped being adapted with the work anchor hole inner wall, and work chuck center is equipped with presstressed reinforcing steel anchor hole, institute
State that work chuck is assembled by least two valve work clip sheet circumferential directions, the diameter of the stub end of the work chuck is more than the work
Make the maximum inner diameter of anchor hole and less than the internal diameter for compressing docking blind hole, the stub end of the work chuck stretches out the work
It is fallen after anchor hole in compression docking blind hole, the big end surface for the chuck that works described in the compression boss top pressure.
Using the above design, it the advantage is that compression docking blind hole provides for compression boss and allow bit space, facilitate compression
The corresponding work chuck of boss active top pressure, clip type work chuck and the cooperation for the anchor hole that works can effectively be realized to prestressing force
The clamping of muscle.
It further describes, is equipped with detent mechanism between the reversed pressure plate and work anchor ring, which includes
Anchor ring locating rod on the pressure plate ontology and the location hole on the work anchor ring, the anchor ring locating rod with
The location hole matches；The anchor ring locating rod is vertically installed in the pressure surface of the pressure plate ontology, the location hole
It is set on the pressure-bearing surface of the work anchor ring, which is blind hole.Using the above design, anchor ring locating rod the advantage is that
Reversed pressure plate stabilization can be guided to approach and top pressure work clip sheet.
It further describes, runs through on the cylinder body of the two-way jack and be equipped at least one presstressed reinforcing steel via, two
The presstressed reinforcing steel via is corresponded on the pars contractilis and is respectively equipped with presstressed reinforcing steel holding holes, is located on the tensioning pars contractilis
The presstressed reinforcing steel holding holes form anchor ring mounting hole, and the presstressed reinforcing steel holding holes on the top pressure pars contractilis are formed
Pressure plate mounting hole, the reversed pressure plate are installed in the pressure plate mounting hole；The cylinder body includes what coaxial line was arranged
The internal cavity of outer sleeve and inner sleeve, the inner sleeve forms presstressed reinforcing steel via, shape between the outer sleeve and inner sleeve
At cylindric grease chamber, the middle part of the grease chamber is equipped with grease chamber shading ring, the grease chamber shading ring outer wall with the inner sleeve respectively
It is fixedly connected with the inner wall of outer sleeve, which is divided into two plunger shafts, two pars contractilis by the grease chamber
It is stretched into two plunger shafts from the both ends of the grease chamber respectively, it is close between the both ends of the grease chamber and corresponding pars contractilis
Envelope is each respectively equipped with pipe and oil return pipe on the corresponding outer sleeve of the plunger shaft；The pars contractilis includes annular piston
And retracting cylinder, wherein annular piston circumferential direction are set in the plunger shaft, the center line of the inner end of the retracting cylinder along the cylinder body
Direction is stretched into the plunger shaft and is connect with annular piston, is equipped between the retracting cylinder and the outer sleeve and inner sleeve close
Sealing, the oil fuel tube and oil return pipe are located at the both sides of the annular piston, and the internal cavity of the retracting cylinder forms institute
State presstressed reinforcing steel holding holes.
Using the above design, the cooperation of the plunger shaft and two pars contractilis of two separations the advantage is that, form two solely
Vertical pars contractilis, the two work independently from each other.Easy structure design can be used to realize the jacking and reset of retracting cylinder.
It further describes, the oil inlet end of two oil fuel tubes is connect with two oil pumps respectively, and two oil pumps are taken out
It takes oily in oil drum；Two oil return pipe oil outlet ends stretch into the oil drum, two of two oil pumps and the controller
Jack control terminal connection；It is both provided with oil flow sensor on two oil fuel tubes：First oil flow sensor and second
Oil flow sensor, first oil flow sensor and second oil flow sensor two with the controller respectively
Flow signal input terminal connects.The oil mass that oil pump extracts is obtained by oil flow sensor, to control the flexible of two pars contractilis
Length is corrected mobile distance in combination with the first displacement sensor and second displacement sensor, makes of jack
It is accurate to be pulled through Cheng Gengjia.
It further describes, the tool anchor assemblies include tool anchor ring and tool chuck；Run through on the tool anchor ring
There is tool anchor hole, the tool anchor hole is in a circular table shape, and the larger one end open of the tool anchor hole internal diameter is in the working face, the tool
The smaller one end open of anchor hole internal diameter is in the mounting surface；The tool chuck is to be adapted with the inner wall of the tool anchor hole
Round table-like, the tool holder set is set in the tool anchor hole, is equipped in the tool chuck with tool anchor hole with hole heart line
Presstressed reinforcing steel keying aperture；The tool chuck is assembled by least two valve tool clamping piece circumferential directions, the tool chuck it is big
Head end is connected with intermediate plate lifting component, and the small head end of the tool chuck is connected with intermediate plate return unit, and the intermediate plate lifts component
Lifting operating parts is equipped between tool anchor ring；Its round platform generatrix direction of the inner wall upper edge of the tool anchor hole is oriented to equipped with intermediate plate
Sliding slot, the intermediate plate guide chute are corresponded with the tool clamping piece, and the opening of the intermediate plate guide chute inside contracts, which is oriented to
Sliding guide piece is respectively equipped in sliding slot, which connects with the corresponding tool clamping piece；The intermediate plate return unit
For dynamic clamping head and quiet clamping head, the tool clamping piece is connected separately with the dynamic clamping head and quiet clamping head, which is oriented in the intermediate plate
It is arranged along its length in sliding slot, one end of the dynamic clamping head and quiet clamping head is connected with the inner wall of the intermediate plate guide chute, described
The other end of dynamic clamping head and quiet clamping head is connected with the tool clamping piece, the company of the dynamic clamping head and quiet clamping head and the intermediate plate guide chute inner wall
It connects and holds the close mounting surface, the connecting pin of the dynamic clamping head and quiet clamping head and tool clamping piece is far from the mounting surface.
Intermediate plate lifting component, which is arranged, and lifts operating parts can facilitate major part extreme direction by from tool clamping piece to tool anchor hole
It pulls, to expand presstressed reinforcing steel keying aperture, conveniently wears presstressed reinforcing steel, after use, intermediate plate return unit can help work
Tool intermediate plate is returned in work anchor hole.And sliding guide piece slides in intermediate plate guide chute, can guide each tool holder
Piece is slided along round platform generatrix direction, is helped to maintain the stability of tool clamping piece sliding, is avoided the interference between multiple intermediate plates
And dislocation；After tool clamping piece slides into the position far from mounting surface, under the elastic force effect of dynamic clamping head and quiet clamping head, intermediate plate can be certainly
It is dynamic to be returned to original position.
As optimal technical scheme, the intermediate plate lifting component includes intermediate plate lifting plate and lifting connector, wherein intermediate plate
Lifting plate is located at the working face side of the tool anchor ring, and the intermediate plate lifting plate is equipped with corresponding with the tool anchor hole
Presstressed reinforcing steel is perforated, and the tool clamping piece is connected separately with the lifting connector, the both ends of the lifting connector respectively with
The tool clamping piece is connected with intermediate plate lifting plate；The lifting operating parts includes push-pull rod, and the push-pull rod is perpendicular to described
Intermediate plate lifts plate, and described push-pull rod one end is threadedly coupled with the tool anchor ring, and the other end activity of the push-pull rod is pierced by institute
Intermediate plate lifting plate is stated, bulb is equipped in the middle part of the push-pull rod, the bulb is located at intermediate plate lifting plate and the tool
Between anchor ring；The working face is equipped with resigning breach corresponding with the bulb.Using the above scheme, push-pull rod is rotated
Away from tool anchor ring, bulb pushes intermediate plate to lift plate original from tool anchor ring, you can all tool clamping pieces is driven to synchronize cunning
It is dynamic, expand presstressed reinforcing steel keying aperture, after the completion of use, bulb can be contained in resigning breach, do not influenced tool clamping piece and returned
Restore position.
It further describes, installation snap ring is equipped in the presstressed reinforcing steel holding holes of the retracting cylinder outer end, it should
The center line of installation snap ring is overlapped with the center line of the retracting cylinder, and the outer end face of the installation snap ring is equipped with against chamfering；It is described
The fitting surface of pressure plate ontology is against the outer end face of the installation snap ring on the retracting cylinder of the top pressure pars contractilis, the compression
The fitting surface edge of plate ontology is equipped with described against the matched annular assembly chamfer of chamfering；The mounting surface of the tool anchor ring
Against the outer end face of the installation snap ring on the retracting cylinder of the tensioning pars contractilis, the mounting surface edge of the tool anchor ring is set
Have with described against the matched annular installation chamfering of chamfering；It is set between the retracting cylinder and pressure plate ontology of the top pressure pars contractilis
There is at least one secondary phase magnet pair, at least one secondary institute also is provided between the retracting cylinder of the tensioning pars contractilis and the tool anchor ring
State phase magnet pair；To including master positioning magnet and from phase magnet, the master positioning magnet is respectively arranged on the phase magnet
On the chamfering inclined-plane against chamfering；It is described from phase magnet include annular assembly chamfer set on the pressure plate ontology from
Pressing plate from phase magnet, the pressure plate ontology should be set to out of phase magnet, further include the ring set on the tool anchor ring
Shape installs the anchor ring at chamfering from phase magnet, which is set to the tool anchor ring out of phase magnet；It is described two-way very heavy
Top further includes the support tube being arranged with center line with the cylinder body, the outer edge of the outer sleeve of top pressure pars contractilis side
It is connect with the inside edge of the support tube, the outer ledge of the support tube is equipped with outside flange, the pressure-bearing of the work anchor ring
Face, which is equipped with, to be disposed around with the matched annular groove of the flange, the annular groove outside the compression docking blind hole.
Using the above scheme, mutually matched structure and auxiliary positioning mechanism can facilitate tool anchor assemblies and jack
Tensioning pars contractilis, reversed pressure plate and jack top pressure pars contractilis and jack and work anchor ring between assembly.
It further describes, the anchor plate component includes anchor plate, the first tie hoop and the second tie hoop, described
Anchor plate includes anchor plate ontology and oviduct；The anchor plate ontology includes the loading end and abutment face backwards to setting, described
Anchor plate body central is provided with presstressed reinforcing steel through-hole, and the presstressed reinforcing steel through-hole is surrounded on the loading end of the anchor plate ontology
Equipped with a circle anchor ring bayonet, the work anchor ring is fallen in the anchor ring bayonet；The stub end of the oviduct is connected to described
On the abutment face of anchor plate ontology, the outer concentric locking collar of the oviduct is equipped with first tie hoop, the microcephaly of the oviduct
End outer wall has been arranged circumferentially flange, and the flange side is provided with second tie hoop, which is located at institute
Flange is stated far from anchor plate ontology side；First tie hoop and the second tie hoop it is oppositely oriented, described
One tie hoop is connect close to one end of the anchor plate ontology with the anchor plate ontology spot welding, and second tie hoop is close
One end of the flange is connect with the flange spot welding.
Using the above scheme, due under anchor region belong to area of stress concentration, compared to traditional anchor plate component, this programme
By the way that two tie hoops are arranged, it can enhance and power is clasped to the concrete substrate below anchor plate, improve the stress concentration
The concrete strength in region.
It further describes, further includes mobile monitoring component, which is fixed at the tool anchor assemblies
Tensioning extended line on, the mobile monitoring component includes at least one presstressed reinforcing steel via, in each presstressed reinforcing steel via
It is both provided with presstressed reinforcing steel displacement sensor, all presstressed reinforcing steel displacement sensors are connect with the controller.Using
Said program, mobile monitoring component are arranged on the tensioning extended line of tool anchor assemblies, mobile monitoring component and tool anchor assemblies
The distance between be more than tensioning pars contractilis maximum tensioning length.It is passed by all presstressed reinforcing steel displacements on mobile monitoring component
Sensor is detected the tensioning displacement of any presstressed reinforcing steel position, when any presstressed reinforcing steel displacement sensor detection distance and
Whens tensioning distance does not wait, illustrates to have in stretching process and slide or fall off relatively, tensioning component breaks down, then alarm is sent out
Alarm.For prompting staff to be detected prestressed stretch-draw intellectual monitoring control system, failure rate is reduced.
Wherein, the step of being installed for tensioning equipment be specially：
S11：The anchor plate component of tensioning equipment is fixed on to the end of bridge beam body；
The anchor plate component includes anchor plate and the first tie hoop and the second spiral hoop that are arranged on the anchor plate
Muscle, the anchor plate are set in the end of the bridge beam body, by the first tie hoop and the second tie hoop by backing plate group
Part is fixed on the end of bridge beam body；
S12：Installment work anchor assemblies；The work anchor ring pads plate face of the work anchor assemblies is resisted against the anchor plate sheet
In the anchor ring bayonet of body loading end；Work anchor hole is equipped on the work anchor ring, the filing appliance is set on the work
In anchor hole；
S13：Reversed pressure plate and jack are installed；
Docking on the corresponding pressure-bearing surface for compressing the work anchor ring of the compression boss of the reversed pressure plate is blind
Hole, the top pressure pars contractilis of the jack abut the fitting surface of the reversed pressure plate；
S14：Installation tool anchor assemblies；
The tool anchor assemblies are fixed on the jack tension pars contractilis, the tool chuck of the tool anchor assemblies
Be arranged in the tool anchor hole of the tool anchor ring of the tool anchor assemblies, the small head end of the tool chuck through intermediate plate return unit with
Tool anchor ring connects, and the stub end of the tool chuck connects through lifting the intermediate plate lifting plate of connector and the tool anchor assemblies
It connects, is lifted in the intermediate plate and connect push-pull rod between plate and tool chuck.
Wherein, it is specially to the step of presstressed reinforcing steel progress stretching construction for tensioning equipment：
S21：Presstressed reinforcing steel, all presstressed reinforcing steels and the anchor plate component from the tensioning equipment are penetrated in bridge beam body
It pierces into, through anchor assemblies, reversed pressure plate and the jack of working, and is pierced by from the tool anchor assemblies；
S22：All presstressed reinforcing steels of tool holder cover locking of the tool anchor assemblies；
S23：Jack drives the elongation operation of tensioning pars contractilis, pulls all presstressed reinforcing steels along driving tensioning pars contractilis elongation
It moves in direction；
S24：Driving push-pull rod drives lifting connector to lift tool holder set, all tool clamping pieces of tool chuck
Opposite presstressed reinforcing steel is moved to tensioning direction, clamp operation of the back off tool chuck to presstressed reinforcing steel；
S25：If tension of prestressed tendon finishes, tensioning terminates；Otherwise, it is returned after jack driving tensioning pars contractilis shrinkage operation
Return step S22.
The particular content of all presstressed reinforcing steels of tool holder cover locking of the tool anchor assemblies described in step S22 is：Rotation
The push-pull rod makes the push-pull rod be moved along tensioning negative direction relative to presstressed reinforcing steel, and the lifting connector is unclamped to described
The lifting active force of tool chuck, the intermediate plate return unit under the effect of elasticity, drive all tool clamping piece phases of tool chuck
Presstressed reinforcing steel is moved along tensioning negative direction, all tool clamping pieces reduce aid through-hole, are locked to all presstressed reinforcing steels.
Wherein, carrying out the step of locking is constructed to the presstressed reinforcing steel for tensioning equipment is specially：
S31：The jack drives top pressure pars contractilis along tensioning negative direction top pressure；
S32：The top pressure pars contractilis drives the compression boss of reversed pressure plate to cover filing appliance and carries out top pressure；
S33：After the work chuck is acted on by top pressure, make work anchor hole reduce, the work chuck to presstressed reinforcing steel into
Row is final to be clamped；
S34：Dismantle reversed pressure plate, jack and tool anchor assemblies.
Wherein, it is specially for the step of controller progress stretching construction intelligent control：
S41：Controller obtains bridge beam body overall length angle value and bridge beam body currently penetrates presstressed reinforcing steel length value；
S42：Setting bridge beam body overall length angle value and bridge beam body retain relationship between presstressed reinforcing steel length value in controller
Formula obtains needing tensioning length value；Wherein bridge beam body overall length angle value L and reservation presstressed reinforcing steel length value l can be in that ratio is closed
System, as：The value range of L=k*l, proportionality coefficient k are 1~1.1.
S43：Controller controls jack pair presstressed reinforcing steel and carries out tension operation；
S44：Controller obtains current tensioning overall length angle value in real time, is needed if current tensioning overall length angle value is more than or equal to
Tensioning length value stops tension operation；Otherwise return to step S43.
In step S43, controller control jack pair presstressed reinforcing steel carries out tension operation particular content and is：
In stretching process, the controller controls the operation of oil pump being connect with jack, the oil pump through oil fuel tube to
The jack oiling, driving tensioning pars contractilis elongation；
Controller simultaneously obtains the flow information that flow sensor detects on oil fuel tube, in conjunction with flow information and tensioning pars contractilis
On the first displacement sensor displacement signal, current tensioning pars contractilis tensioning length is obtained, if tensioning pars contractilis tensioning length
Reach jack tension threshold value, controller controls jack and stops tensioning；
When needing the jack tension pars contractilis to shrink, controller controls the return valve on oil return pipe and opens,
Pars contractilis is drawn to start to shrink at.
During cable tensios control, controller obtains all presstressed reinforcing steel displacement sensor detections on mobile monitoring component
The each presstressed reinforcing steel movable length, when the shift length of any presstressed reinforcing steel displacement sensor detection does not wait, connection
Alarm on the controller sends out alarm.
It is using advantageous effect of the invention：First, the innovative design of tool anchor ring, more presstressed reinforcing steels can be facilitated
It wears；Second is that each work package cooperates, realize that the clamping of presstressed reinforcing steel, the tensioning pars contractilis of two-way jack first work, it will
Tension of prestressed tendon works to predetermined stress value, then top pressure pars contractilis, reversed pressure plate top pressure work chuck is pushed, to make
Work anchor clamps presstressed reinforcing steel, can reduce the sliding of presstressed reinforcing steel, relative to traditional tensioning system, this programme can be reduced and be answered
Power is lost, and excessive tensioning is avoided, and is preferably controlled stretching process and is improved stretch-draw effect.Third,：It is realized in conjunction with controller automatic
Control reduces the failure rate of stretching process, improves tensioning reliability.Fourth,：Tensioning equipment dismounting is orderly, and stretching process step is tight
It gathers, controller is monitored and controlled in real time, and intelligence is accurate.
Description of the drawings
Fig. 1 is the structural schematic diagram of tensioning equipment of the present invention；
Fig. 2 is the assembling structure schematic diagram of the reversed pressure plate of tensioning equipment and the anchor assemblies that work；
Fig. 3 is the structural schematic diagram of tensioning equipment work anchor assemblies；
Fig. 4 is the structural schematic diagram of the reversed pressure plate of tensioning equipment；
Fig. 5 is the structural schematic diagram of tensioning equipment tool anchor assemblies；
Fig. 6 is the enlarged drawing of m in Fig. 5；
Fig. 7 is the control block diagram of the present invention；
Fig. 8 is tensioning equipment installation procedure figure of the present invention；
Fig. 9 is that tensioning equipment of the present invention carries out stretching construction flow chart to presstressed reinforcing steel；
Figure 10 is that tensioning equipment of the present invention carries out locking construction process figure to presstressed reinforcing steel；
Figure 11 is that controller of the present invention carries out stretching construction intelligent control flow figure.
Specific implementation mode
With reference to embodiment and attached drawing, the invention will be further described.
A kind of prestressing force intelligent tensioning autocontrol method, including：The step of being installed for tensioning equipment；
The step of stretching construction is carried out to presstressed reinforcing steel for tensioning equipment；For tensioning equipment to the presstressed reinforcing steel into
The step of row locking construction；The step of stretching construction intelligent control being carried out for controller f.
In conjunction with Fig. 1 as can be seen that in the present embodiment, the tensioning equipment include anchor plate component e, work anchor assemblies a,
Reversed pressure plate b, jack c and tool anchor assemblies d；Further include at least one presstressed reinforcing steel, the anchor plate component e, work
Anchor assemblies a, reversed pressure plate b, jack c and tool anchor assemblies d are abutted along tensioning direction and are set in all pre- answer successively
On power muscle.
The jack c is two-way jack comprising pars contractilis there are two being set on cylinder body c3, cylinder body c3, two institutes
The telescopic direction for stating pars contractilis is mutually parallel, and two pars contractilis are respectively formed tensioning pars contractilis and top pressure pars contractilis, described
The tool anchor assemblies d is installed on tensioning pars contractilis, the reversed pressure plate b is installed on the top pressure pars contractilis.
In the present embodiment, the anchor plate component e is fixed in concrete substrate, and the anchor plate component e includes anchor
Backing plate e1, the first tie hoop e2 and the second tie hoop e4, the anchor plate e1 include anchor plate ontology e11 and oviduct
E12, the anchor plate ontology e11 include the loading end and abutment face backwards to setting, and the anchor plate ontology e11 is provided centrally with
Presstressed reinforcing steel through-hole is equipped with a circle anchor ring bayonet on the loading end of the anchor plate ontology e11 around the presstressed reinforcing steel through-hole
E6, the work anchor ring a1 are fallen in the anchor ring bayonet e6.The stub end of the oviduct e12 is connected to the anchor plate sheet
On the abutment face of body e11, for ease of using, the oviduct e12 and anchor plate ontology e11 is integrally formed.The loudspeaker
The outer concentric locking collars of pipe e12 are equipped with the first tie hoop e2, and flange has been arranged circumferentially on the small head end outer wall of the oviduct e12
The side e3, the flange e3 is provided with the second tie hoop e4, and it is separate that second tie hoop e4 is located at the flange e3
The sides anchor plate ontology e11, the first tie hoop e2 and the second tie hoop e4's oppositely oriented, first spiral shell
Rotation stirrup e2 is connect close to one end of the anchor plate ontology e11 with the anchor plate ontology e11 spot welding, second tie hoop
E4 is connect close to one end of the flange e3 with flange e3 spot welding.Compared to traditional components, anchor plate component e in this programme
Design can enhance clasps power to the concrete substrate below anchor plate, improves the concrete strength of the region of stress concentration,
To provide strong support for the tensioning of presstressed reinforcing steel.
As shown in Figures 2 and 3, the work anchor assemblies a is resisted against on the loading end of the anchor plate ontology e11, the work
It includes being equipped with work anchor hole a4, the work on work anchor ring a1 and work chuck a2, the work anchor ring a1 to make anchor assemblies a
Chuck a2 is matched with the work anchor hole a4；
The work anchor ring a1 includes backing plate face and pressure-bearing surface, and the backing plate face is described to hold against the anchor plate component e
Pressure surface is inserted into the work anchor hole a4, the top pressure towards the reversed pressure plate b, the work chuck a2 from the pressure-bearing surface
Pars contractilis pushes the chuck a2 that works described in the reversed pressure plate b top pressures；
Matched with work anchor assemblies a is the reversed pressure plate b.As shown in figure 4, the reversed pressure plate b includes
Pressure plate ontology b1, pressure plate ontology b1 include the fitting surface and pressure surface backwards to setting, and the fitting surface is towards the cylinder
Inside body c3, the pressure surface, which is equipped at the centers compression boss b2, the compression boss b2, is equipped with presstressed reinforcing steel perforation b3, should
The both ends of presstressed reinforcing steel perforation b3 are opened on the end face of the compression boss b2 and the fitting surface respectively；
The pressure-bearing surface of the work anchor ring a1 is equipped with compression corresponding with the compression boss b2 and docks blind hole a3, should
Docking blind hole a3 bottom holes are compressed through there is the work anchor hole a4, work anchor hole a4 is truncated cone-shaped, the work anchor hole a4 internal diameters
Larger one end open is in compression docking blind hole a3, and the smaller one end open of the work anchor hole a4 internal diameters is in the backing plate
Face；
The outer wall of the work chuck a2 is the truncated cone-shaped being adapted with the work anchor hole a4 inner walls, the work chuck
The centers a2 are equipped with presstressed reinforcing steel anchor hole, and work chuck a2 is assembled by least two valve work clip sheet circumferential directions, the filing appliance
The internal diameter that the diameter of the stub end of a2 docks blind hole a3 more than the maximum inner diameter of the work anchor hole a4 and less than the compression is covered,
The stub end of work chuck a2 is fallen after stretching out the work anchor hole a4 in compression docking blind hole a3, the compression boss b2
Work the big end surface of chuck a2 described in top pressure.
For convenience of the cooperation between the reversed pressure plate b and work anchor ring a1, the reversed pressure plate b and work anchor ring
Between a1 be equipped with detent mechanism, the detent mechanism include be set to the pressure plate ontology b1 on anchor ring locating rod b4 and be set to institute
The location hole a5, the anchor ring locating rod b4 stated on work anchor ring a1 is vertically installed in the pressure surface of the pressure plate ontology b1
On, the location hole a5 is set on the pressure-bearing surface of the work anchor ring a1, and location hole a5 is blind hole, the anchor ring locating rod
B4 is matched with the location hole a5.This design enables anchor ring locating rod that reversed pressure plate stabilization to be guided to approach and top pressure work
Make intermediate plate.
What the tensioning of two-way jack and top pressure function were realized in：It is pre- through being equipped on the cylinder body c3 of two-way jack
Stress rib via corresponds to the presstressed reinforcing steel via on two pars contractilis and is respectively equipped with presstressed reinforcing steel holding holes, is located at described
The presstressed reinforcing steel holding holes on pars contractilis are drawn to form anchor ring mounting hole c1, it is solid that the tool anchor assemblies d is installed on the anchor ring
Determine in the c1 of hole, is located at the presstressed reinforcing steel holding holes on the top pressure pars contractilis and forms pressure plate mounting hole c2, it is described reversed
Pressure plate b is installed in pressure plate mounting hole c2.
Cylinder body c3 includes the outer sleeve c5 and inner sleeve c6 that coaxial line is arranged, and the internal cavity of inner sleeve c6 forms described pre-
Stress rib via, forms cylindric grease chamber between outer sleeve c5 and inner sleeve c6, the middle part of the grease chamber is equipped with grease chamber shading ring
C3a, grease chamber shading ring c3a are fixedly connected with the inner wall of the outer wall of inner sleeve c6 and outer sleeve c5 respectively, the grease chamber shading ring
The grease chamber is divided into two plunger shaft c4 by 3a, and two pars contractilis stretch into two plunger shaft c4 from the both ends of grease chamber respectively
It is interior, it is sealed between the both ends of the grease chamber and corresponding pars contractilis, each on the corresponding outer sleeve c5 of the plunger shaft c4 respectively
Equipped with pump nozzle and oil return nozzle.
The pars contractilis includes annular piston c7 and retracting cylinder c8, and wherein annular piston c7 circumferential directions are set to the plunger shaft c4
Interior, the inner end of the retracting cylinder c8 is stretched into the plunger shaft c4 along the centerline direction of the cylinder body c3 and lives with the ring-type
C7 connections are filled in, sealing element, the pump nozzle and oil return are equipped between the retracting cylinder c8 and the outer sleeve c5 and inner sleeve c6
Mouth is located at the both sides of the annular piston c7, and the internal cavity of the retracting cylinder c8 forms the presstressed reinforcing steel holding holes.
As shown in figure 5, tool anchor assemblies d is used for the clamping of presstressed reinforcing steel, tool anchor assemblies d includes tool anchor ring d1 and work
Has chuck d2；The tool anchor ring d1 includes working face and mounting surface, and running through on the tool anchor ring d1 has tool anchor hole d3, should
Tool anchor hole d3 is in a circular table shape, and the larger one end open of the tool anchor hole d3 internal diameters is in the working face, tool anchor hole d3
The smaller one end open of diameter is in the mounting surface；
The tool chuck d2 is round table-like to be adapted with the inner wall of the tool anchor hole d3, and the tool chuck d2 is set
It is placed in tool anchor hole d3, is equipped in the tool chuck d2 and is engaged with the presstressed reinforcing steel of hole heart line with tool anchor hole d3
Hole.
The d of tool anchor assemblies described in the present embodiment, which has been done, just wears formula design.Specifically, the tool chuck d2 is by least two
Valve tool clamping piece circumferential direction is assembled, and the stub end of the tool chuck d2 is connected with intermediate plate lifting component, the tool chuck
The small head end of d2 is connected with intermediate plate return unit d5, and lifting operating parts is equipped between the intermediate plate lifting component and tool anchor ring d1.
As shown in fig. 6, its round platform generatrix direction of the inner wall upper edge of the tool anchor hole d3 is equipped with intermediate plate guide chute d4, it should
Intermediate plate guide chute d4 is corresponded with the tool clamping piece, and the opening of intermediate plate guide chute d4 inside contracts, which, which is oriented to, slides
Sliding guide piece d41 is respectively equipped in slot d4, sliding guide piece d41 is connected with the corresponding tool clamping piece；
Specifically, the intermediate plate return unit d5 is dynamic clamping head and quiet clamping head, and it is multiple that the tool clamping piece is connected separately with the elasticity
Position part, the dynamic clamping head and quiet clamping head are arranged along its length in the intermediate plate guide chute d4, one end of the dynamic clamping head and quiet clamping head
It is connected with the inner wall of the intermediate plate guide chute d4, the other end of the dynamic clamping head and quiet clamping head is connected with the tool clamping piece, described
The connecting pin of dynamic clamping head and quiet clamping head and the intermediate plate guide chute d4 inner walls is close to the mounting surface, the dynamic clamping head and quiet clamping head and tool
The connecting pin of intermediate plate is far from the mounting surface.
Tool clamping piece is pulled to the major part extreme direction of tool anchor hole d3, under the guiding of sliding guide piece d41, Ge Gegong
Have intermediate plate to slide along round platform generatrix direction, help to maintain the stability of tool clamping piece sliding, avoids between multiple intermediate plates
Interference and dislocation, to expand presstressed reinforcing steel keying aperture, conveniently wear presstressed reinforcing steel, after use, intermediate plate return unit d5 energy
Enough assistance tool intermediate plates are returned in the tool anchor hole d3.
Include intermediate plate lifting plate d6 and lifting connector for convenience of the tool clamping piece, the intermediate plate lifting component is pulled
D7, wherein intermediate plate lifting plate d6 are located at the working face side of the tool anchor ring d1, and the intermediate plate lifting plate d6 is equipped with and institute
The corresponding presstressed reinforcing steel perforation d8 of tool anchor hole d3 are stated, the tool clamping piece is connected separately with the lifting connector d7, institute
The both ends for stating lifting connector d7 are connected with the tool clamping piece and intermediate plate lifting plate d6 respectively, the lifting connector d7
It is also disposed in the intermediate plate guide chute d4, avoids occupying the space in the tool anchor hole d3.
Specifically, the lifting connector d7 and intermediate plate return unit d5 can be spring.
For convenience of operation, the lifting operating parts includes push-pull rod d9, and push-pull rod d9 lifts plate perpendicular to the intermediate plate
D6, the one end the push-pull rod d9 are threadedly coupled with the tool anchor ring d1, and the other end activity of the push-pull rod d9 is pierced by described
Intermediate plate lifts is located at intermediate plate lifting plate d6 in the middle part of plate d6, the push-pull rod d9 equipped with bulb d10, the bulb d10
Between the tool anchor ring d1, the working face is equipped with resigning breach d11 corresponding with the bulb d10.
As shown in Figure 1, for convenience of the top of the tensioning pars contractilis of tool anchor assemblies and jack, reversed pressure plate and jack
The assembly between pars contractilis and jack and work anchor ring, the present embodiment is pressed to have following design：
Installation snap ring c10, the center of installation snap ring c10 are equipped in the presstressed reinforcing steel holding holes of the outer ends retracting cylinder c8
Line is overlapped with the center line of retracting cylinder c8, and the outer end face of installation snap ring c10 is equipped with against chamfering；
The fitting surface of pressure plate ontology b1 against the installation snap ring c10 on the retracting cylinder c8 of top pressure pars contractilis outer end face,
The fitting surface edge of pressure plate ontology b1 be equipped with against the matched annular assembly chamfer b5 of chamfering；
The mounting surface of tool anchor ring d1 is against the outer end face of the installation snap ring c10 on the retracting cylinder c8 of tensioning pars contractilis, work
The mounting surface edge for having anchor ring d1 is equipped with described against the matched annular installation chamfering of chamfering；
At least one secondary phase magnet pair is equipped between the retracting cylinder c8 and pressure plate ontology b1 of top pressure pars contractilis, tensioning is flexible
At least one secondary phase magnet pair also is provided between the retracting cylinder c8 and tool anchor ring d1 in portion；
For phase magnet to including master positioning magnet c11 and from phase magnet, master positioning magnet is respectively arranged on the installation card
On the chamfering inclined-plane against chamfering of ring c10；Include pressing plate from phase magnet b6 and anchor ring from phase magnet from phase magnet
D12, the pressing plate out of phase magnet b6 set on the pressure plate ontology b1 annular assembly chamfer b5 locate, anchor ring from position magnetic
In iron d12 at the annular installation chamfering of the tool anchor ring d1；
The cylinder body c3 is provided with support tube c9 with center line, and the outer sleeve c5's of top pressure pars contractilis side is outer
Edge is connect with the inside edge of support tube c9, and the outer ledge of support tube c9 is equipped with outside flange, the work anchor
The pressure-bearing surface of ring a1 is equipped with is disposed around the compression docking with the matched annular groove a6 of the flange, annular groove a6
Outside blind hole a3；
The external part end of the compression boss b2 and the anchor ring locating rod b4 are equipped with outer chamfer.
Since a prestressed girder needs while using more presstressed reinforcing steels, above-mentioned work anchor assemblies in engineering practice
A and tool anchor assemblies d is porous anchor, and multiple compression boss b2 and pre- are correspondingly provided on the reversed pressure plate b
Stress rib perforation b3.
Prestressing force pull system is installed as shown in Figure 1, and the tensioning pars contractilis work of the two-way jack c is opened
Beginning tensioning, after reaching predetermined tensioning amount, the top pressure pars contractilis of the jack pushes described in the reversed pressure plate b top pressures
Work chuck a2, and the work anchor assemblies a is made to clamp the presstressed reinforcing steel, to avoid presstressed reinforcing steel from springing back, reduces prestressing force
Loss.
It can be seen that in conjunction with Fig. 1,7, the collapsing length of two pars contractilis of jack c is controlled by controller f；
Wherein, be provided on the tensioning pars contractilis the first displacement sensor f1, the first displacement sensor f1 with
The first displacement input terminal of the controller f connects；
Second displacement sensor f2, the second displacement sensor f2 and the control are provided on the top pressure pars contractilis
The second displacement input terminal of device f processed connects.
The oil inlet end of two oil fuel tubes is connect with two oil pump f3 respectively, and the two two oil pump f3 extract oil drum
Middle oil；Two oil return pipe oil outlet ends stretch into the oil drum, two jackings of the two oil pump f3 and controller f
Control terminal connects；
It is both provided with oil flow sensor on two oil fuel tubes：First oil flow sensor f41 and the second oil stream
Quantity sensor f42, the first oil flow sensor f41 and the second oil flow sensor f42 respectively with the controller f
Two flow signal input terminals connection.
In the present embodiment, in order to improve tensioning precision, it is additionally provided with mobile monitoring component g, mobile monitoring component g is solid
It is arranged on the tensioning extended line of the tool anchor assemblies d calmly, the mobile monitoring component g includes at least one presstressed reinforcing steel mistake
Hole is both provided with presstressed reinforcing steel displacement sensor g1, all presstressed reinforcing steel displacement sensings in each presstressed reinforcing steel via
Device g1 is connect with the controller f.
From figure 8, it is seen that being specially for the step of tensioning equipment installation：
S11：The anchor plate component e of tensioning equipment is fixed on to the end of bridge beam body；
The anchor plate component e includes anchor plate e1 and the first tie hoop e2 and second for being arranged on anchor plate e1
Tie hoop e4, the anchor plate e1 are set in the end of the bridge beam body, pass through the first tie hoop e2 and the second spiral
Backing plate assemblies e is fixed on the end of bridge beam body by stirrup e4；
S12：Installment work anchor assemblies a；
The work anchor ring a1 backing plates face of the work anchor assemblies a is resisted against to the anchor of the anchor plate ontology e11 loading ends
In ring bayonet e6；Work anchor hole a4 is equipped on the work anchor ring a1, the work chuck a2 settings are in the work anchor hole
In a4；
S13：Reversed pressure plate b and jack c is installed；
By pair on the corresponding pressure-bearing surfaces for compressing the work anchor ring a1 of the compression boss b2 of the reversed pressure plate b
The top pressure pars contractilis for meeting blind hole a3, the jack c abuts the fitting surface of the reversed pressure plate b；
S14：Installation tool anchor assemblies d；
The tool anchor assemblies d is fixed on the jack c tensioning pars contractilis, the tool of the tool anchor assemblies d
Chuck d2 is arranged in the tool anchor hole d3 of the tool anchor ring d1 of the tool anchor assemblies d, the small head end of the tool chuck d2
It is connect with tool anchor ring d1 through intermediate plate return unit d5, the stub end of the tool chuck d2 is through lifting connector d7 and the tool
The intermediate plate of anchor assemblies d lifts plate d6 connections, the connection push-pull rod d9 between the intermediate plate lifts plate d6 and tool chuck d2.
In conjunction with Fig. 9, it is specially to the step of presstressed reinforcing steel progress stretching construction for tensioning equipment：
S21：Penetrate presstressed reinforcing steel in the bridge beam body, all presstressed reinforcing steels and from the anchor plate of the tensioning equipment
Component e is pierced into, and through anchor assemblies a, reversed pressure plate b and the jack c of working, and is pierced by from the tool anchor assemblies d；
S22：The tool chuck d2 of the tool anchor assemblies d locks all presstressed reinforcing steels；
S23：Jack c driving tensioning pars contractilis elongation operations, pull all presstressed reinforcing steels to be stretched along driving tensioning pars contractilis
Length direction moves；
S24：Driving push-pull rod d9 drives lifting connector d7 to lift tool chuck d2, the tool chuck d2's
All tool clamping pieces are moved with respect to presstressed reinforcing steel to tensioning direction, and the back off tool chuck d2 grasps the clamping of presstressed reinforcing steel
Make；
S25：If tension of prestressed tendon finishes, tensioning terminates；Otherwise, after jack c drives tensioning pars contractilis shrinkage operation
Return to step S22.
In the present embodiment, the tool chuck d2 of the tool anchor assemblies d described in step S22 locks all presstressed reinforcing steels
Particular content is：The push-pull rod d9 is rotated, the push-pull rod d9 is made to be moved along tensioning negative direction relative to presstressed reinforcing steel, it is described to carry
Connector d7 is drawn to unclamp the lifting active force to the tool chuck d2, the intermediate plate return unit d5 under the effect of elasticity, drives
All tool clamping pieces of tool chuck d2 are moved with respect to presstressed reinforcing steel along tensioning negative direction, and it is logical that all tool clamping pieces reduce aid
All presstressed reinforcing steels are locked in hole.
In conjunction with Figure 10, carrying out the step of locking is constructed to the presstressed reinforcing steel for tensioning equipment is specially：
S31：The jack c drives top pressure pars contractilis along tensioning negative direction top pressure；
S32：Top pressure pars contractilis drives the compression boss b2 of reversed pressure plate b to carry out top pressure to work chuck a2；
S33：After the work chuck a2 is acted on by top pressure, work anchor hole a4 is set to reduce, the work chuck a2 to answering in advance
Power muscle is finally clamped；
S34：Dismantle reversed pressure plate b, jack c and tool anchor assemblies d.
In conjunction with Figure 11 as can be seen that the step of carrying out stretching construction intelligent control for controller f is specially：
S41：Controller f obtains bridge beam body overall length angle value and bridge beam body currently penetrates presstressed reinforcing steel length value；
S42：Setting bridge beam body overall length angle value and bridge beam body retain relationship between presstressed reinforcing steel length value in controller f
Formula obtains needing tensioning length value；
S43：Controller f control jack c carry out tension operation to presstressed reinforcing steel；
S44：Controller f obtains current tensioning overall length angle value in real time, is needed if current tensioning overall length angle value is more than or equal to
Tensioning length value is wanted, tension operation is stopped.
In the present embodiment, in step S43, it is specific that controller f control jack c carry out tension operation to presstressed reinforcing steel
Content is：In stretching process, the oil pump f3 work that the controller f controls are connect with jack c, the oil pump f3 is through oiling
Pipe is extended to the jack c oilings, driving tensioning pars contractilis；
Controller f simultaneously obtains the flow information that flow sensor detects on oil fuel tube, flexible in conjunction with flow information and tensioning
The displacement signal of the first displacement sensor in portion obtains current tensioning pars contractilis tensioning length, if tensioning pars contractilis tensioning is long
Degree reaches jack c tensioning threshold values, and controller f control jack c stops tensioning；
When needing the jack c tensioning pars contractilis to shrink, the return valve on controller f control oil return pipes is opened,
Tensioning pars contractilis starts to shrink at.
Preferably, during cable tensios control, controller f obtains all presstressed reinforcing steel displacements on mobile monitoring component g and passes
The each presstressed reinforcing steel movable length of sensor g1 detections, when the position of any presstressed reinforcing steel displacement sensor g1 detections
Whens shifting length is not equal, the alarm f5 being connected on the controller f sends out alarm.Finally, it should be noted that foregoing description
Be merely a preferred embodiment of the present invention, those of ordinary skill in the art under the inspiration of the present invention, without prejudice to present inventive concept
And under the premise of claim, can make and indicate as multiple types, such transformation each fall within protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of prestressing force intelligent tensioning autocontrol method, it is characterised in that including：
The step of being installed for tensioning equipment；
The tensioning equipment includes anchor plate component (e), work anchor assemblies (a), reversed pressure plate (b), jack (c) and tool
Anchor assemblies (d)；
The step of stretching construction is carried out to presstressed reinforcing steel for tensioning equipment；
The step of locking construction is carried out to the presstressed reinforcing steel for tensioning equipment；
The step of stretching construction intelligent control being carried out for controller (f).
2. a kind of prestressing force intelligent tensioning autocontrol method according to claim 1, it is characterised in that described for opening
Drawing device install the step of be specially：
S11：The anchor plate component (e) of tensioning equipment is fixed on to the end of bridge beam body；
The anchor plate component (e) include anchor plate (e1) and be arranged the first tie hoop (e2) on the anchor plate (e1) and
Second tie hoop (e4), the anchor plate (e1) are set in the end of the bridge beam body, pass through the first tie hoop (e2)
Backing plate assemblies (e) are fixed on to the end of bridge beam body with the second tie hoop (e4)；
S12：Installment work anchor assemblies (a)；
Work anchor ring (a1) the backing plate face of the work anchor assemblies (a) is resisted against anchor plate ontology (e11) loading end
In anchor ring bayonet (e6)；Work anchor hole (a4) is equipped on the work anchor ring (a1), the work chuck (a2) is arranged in institute
It states in work anchor hole (a4)；
S13：Reversed pressure plate (b) and jack (c) are installed；
It will be on the corresponding pressure-bearing surface for compressing the work anchor ring (a1) of the compression boss (b2) of the reversed pressure plate (b)
Blind hole (a3) is docked, the top pressure pars contractilis of the jack (c) abuts the fitting surface of the reversed pressure plate (b)；
S14：Installation tool anchor assemblies (d)；
The tool anchor assemblies (d) are fixed on jack (c) the tensioning pars contractilis, the work of the tool anchor assemblies (d)
Have chuck (d2) to be arranged in the tool anchor hole (d3) of the tool anchor ring (d1) of the tool anchor assemblies (d), the tool chuck
(d2) small head end is connect through intermediate plate return unit (d5) with tool anchor ring (d1), and the stub end of the tool chuck (d2) is through lifting
Connector (d7) is connect with the intermediate plate of the tool anchor assemblies (d) lifting plate (d6), in intermediate plate lifting plate (d6) and tool
Push-pull rod (d9) is connected between chuck (d2).
3. a kind of prestressing force intelligent tensioning autocontrol method according to claim 2, it is characterised in that described for opening
Drawing device to presstressed reinforcing steel carry out stretching construction the step of be specially：
S21：Presstressed reinforcing steel, all presstressed reinforcing steels and the anchor plate component from the tensioning equipment are penetrated in the bridge beam body
(e) it pierces into, through anchor assemblies (a), reversed pressure plate (b) and the jack (c) of working, and is pierced by from the tool anchor assemblies (d)；
S22：The tool chuck (d2) of the tool anchor assemblies (d) locks all presstressed reinforcing steels；
S23：Jack (c) drives the elongation operation of tensioning pars contractilis, pulls all presstressed reinforcing steels along driving tensioning pars contractilis elongation
It moves in direction；
S24：Driving push-pull rod (d9) drives lifting connector (d7) to lift tool chuck (d2), the tool chuck
(d2) all tool clamping pieces are moved with respect to presstressed reinforcing steel to tensioning direction, unclamp the tool chuck (d2) to presstressed reinforcing steel
Clamp operation；
S25：If tension of prestressed tendon finishes, tensioning terminates；Otherwise, it is returned after jack (c) driving tensioning pars contractilis shrinkage operation
Return step S22.
4. a kind of prestressing force intelligent tensioning autocontrol method according to claim 3, it is characterised in that in step S22
The particular content that the tool chucks (d2) of the tool anchor assemblies (d) locks all presstressed reinforcing steels is：Rotate the push-pull rod
(d9), the push-pull rod (d9) is made to be moved along tensioning negative direction relative to presstressed reinforcing steel, the lifting connector (d7) is unclamped to institute
The lifting active force of tool chuck (d2) is stated, the intermediate plate return unit (d5) under the effect of elasticity, drives tool chuck (d2)
All tool clamping pieces are moved with respect to presstressed reinforcing steel along tensioning negative direction, and all tool clamping pieces reduce aid through-holes, pre- are answered to all
Power muscle is locked.
5. a kind of prestressing force intelligent tensioning autocontrol method according to claim 3, it is characterised in that described for opening
Drawing device carries out the step of locking is constructed to the presstressed reinforcing steel：
S31：The jack (c) drives top pressure pars contractilis along tensioning negative direction top pressure；
S32：The top pressure pars contractilis drives the compression boss (b2) of reversed pressure plate (b) to carry out top pressure to work chuck (a2)；
S33：After the work chuck (a2) is acted on by top pressure, work anchor hole (a4) is set to reduce, the work chuck (a2) is to pre-
Stress rib is finally clamped；
S34：Dismantle reversed pressure plate (b), jack (c) and tool anchor assemblies (d).
6. prestressing force intelligent tensioning autocontrol method according to claim 5, it is characterised in that for controller (f) into
The step of row stretching construction intelligent control is specially：
S41：Controller (f) obtains bridge beam body overall length angle value and bridge beam body currently penetrates presstressed reinforcing steel length value；
S42：Setting bridge beam body overall length angle value and bridge beam body retain relationship between presstressed reinforcing steel length value in controller (f)
Formula obtains needing tensioning length value；
S43：Controller (f) controls jack (c) and carries out tension operation to presstressed reinforcing steel；
S44：Controller (f) obtains current tensioning overall length angle value in real time, is needed if current tensioning overall length angle value is more than or equal to
Tensioning length value stops tension operation；Otherwise return to step S43.
7. a kind of prestressing force intelligent tensioning autocontrol method according to claim 6, it is characterised in that in step S43
In, controller (f) control jack (c) carries out tension operation particular content to presstressed reinforcing steel and is：
In stretching process, oil pump (f3) work that controller (f) control is connect with jack (c), the oil pump (f3)
Through oil fuel tube to jack (c) oiling, driving tensioning pars contractilis extends；
Controller (f) simultaneously obtains the flow information that flow sensor detects on oil fuel tube, in conjunction with flow information and tensioning pars contractilis
On the first displacement sensor displacement signal, current tensioning pars contractilis tensioning length is obtained, if tensioning pars contractilis tensioning length
Reach jack (c) tensioning threshold value, controller (f) controls jack (c) and stops tensioning；
When needing jack (c) the tensioning pars contractilis to shrink, controller (f) controls the return valve on oil return pipe and opens,
Tensioning pars contractilis starts to shrink at.
8. a kind of prestressing force intelligent tensioning autocontrol method according to claim 6, it is characterised in that in cable tensios control
In the process, controller (f) obtains each institute of all presstressed reinforcing steel displacement sensor (g1) detections on mobile monitoring component (g)
Presstressed reinforcing steel movable length is stated, when the shift length of any presstressed reinforcing steel displacement sensor (g1) detection does not wait, connection
Alarm (f5) on the controller (f) sends out alarm.
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| CN2018101036704 | 2018-02-01 | ||
| CN201810103670 | 2018-02-01 |
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| CN201810454743.4A Expired - Fee Related CN108612313B (en) | 2018-02-01 | 2018-05-14 | Automatic control method for intelligent prestress tensioning |
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| CN115262981A (en) * | 2022-08-16 | 2022-11-01 | 中铁十五局集团有限公司 | Intelligent prestress tensioning construction device for house construction project |
| CN116255013A (en) * | 2022-11-25 | 2023-06-13 | 中国建筑第二工程局有限公司 | Prestress tensioning jack |
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| CN106758820A (en) * | 2016-11-15 | 2017-05-31 | 中铁二局集团有限公司 | A kind of continuous Cast-in-situ Beam prestressing tendon stretch-draw construction method of minor radius |
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| CN102359231A (en) * | 2011-08-05 | 2012-02-22 | 建研科技股份有限公司 | Heat treatment high-yield-ratio steel bar pre-tensioning clamp and using method thereof |
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| CN116255013A (en) * | 2022-11-25 | 2023-06-13 | 中国建筑第二工程局有限公司 | Prestress tensioning jack |
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| CN108612313B (en) | 2020-10-16 |
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