CN106523448B - The uniform tensioning intelligent tensioning system of the power such as prestressing tendon and its method for the uniform tensioning of the power such as prestressing tendon - Google Patents
The uniform tensioning intelligent tensioning system of the power such as prestressing tendon and its method for the uniform tensioning of the power such as prestressing tendon Download PDFInfo
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- CN106523448B CN106523448B CN201611114719.3A CN201611114719A CN106523448B CN 106523448 B CN106523448 B CN 106523448B CN 201611114719 A CN201611114719 A CN 201611114719A CN 106523448 B CN106523448 B CN 106523448B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
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- Mechanical Engineering (AREA)
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- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
A kind of uniform tensioning intelligent tensioning system of the power such as prestressing tendon, including the power pretension integral tension intelligence such as m platforms jack, high-pressure oil pipe, data wire, n intelligent hydraulic pumping plant and control system, the power pretension integral tension intelligence jack such as described is made up of the power such as twisted wire pre-tightening apparatus, integral tension clamping device, punching integral tension device and displacement measuring device；Under working condition, the steel strand wires at prestressing tendon both ends to be tensioned through work anchor slab, work clip sheet, limiting plate and tool clamping piece with etc. the anchored end of the power pre-tightening apparatus such as the twisted wire of power pretension integral tension intelligence jack be connected；Connected by high-pressure oil pipe etc. between each jack and pumping plant of power pretension integral tension intelligence jack, be connected etc. between power pretension integral tension intelligence jack and control system by data wire.The system tensioning quality is good, operating efficiency is high, the problem of prestressing force intelligent tensioning system of existing entire beam tension can be overcome to exist.M, n is any even number less than 50 more than or equal to 2.
Description
Technical field
The present invention relates to a kind of engineering tensioning system and its application, the uniform tensioning intelligence of the power such as particularly a kind of prestressing tendon
Tensioning system and its method for the uniform tensioning of the power such as prestressing tendon.
Background technology
The tensioning of prestressing tendon is when concrete reaches certain intensity, and tensioning is carried out using prestressed stretch-draw equipment；
Tensioner system generally comprises the composition such as hydraulic jack, supporting high-pressure oil pump, pressure gauge and external oil pipe, it and anchorage
Support the use.
In recent years, prestressing force intelligent tensioning heat has been started both at home and abroad；Prestressing force intelligent tensioning is to use intelligent tensioning system
System, automatic, synchronous and accurate tensioning is carried out to prestressing tendon；It is to control stretching oil pump and jack by computer, is utilized
The measurement data of force cell and displacement transducer is fed back, and realizes prestressing force synchronization and accurate tensioning, while to stretching process
Data are stored, and can retrieve for examination historical data at any time；Interference from human factor can be so eliminated, is effective to ensure that prestressed stretch-draw
Construction quality.
The intelligent tensioning system patent of domestic applications is relatively more, but its structure is substantially all, including intelligent jack, intelligence
Can pumping plant, control system（Independent or embedded pumping plant）It is interior；Its jack is the form using integral tension, and each jack includes
A set of work anchor, kit anchor, all prestressing force twisted wires are anchored first with moveable anchor and carry out tensioning, then put Zhang Zaijin
OK；The intelligent jack and tensioning system that these patents use, are all entire beam tensions, are carried out without the single strand in halved tie
Tensioning；After prestressing tendon steel stranded wire penetrating adapter, moveable anchor is loaded onto at steel strand wires both ends simultaneously and intermediate plate carries out prestressing force entire beam tension,
And the tension force of each single strand is not adjusted, each steel strand wires unbalance stress in prestressing tendon certainly will be caused；The initial stress of prestressing tendon
Uniformity does not ensure fracture of wire or stripped thread phenomenon easily occur, and influences prestressing tendon relaxation property, turns into effective prestress and damages for a long time
Lose one of the main reason for excessive；If prestressing tendon steel stranded wire penetrating adapter, installation tool anchor and then use single steel strand are used
Jack carries out, by root pretension tensioning, to accomplish that initial stress is uniform, but should for several or even tens of the pre- of steel strand wires composition
Power Shu Eryan, operating efficiency are too low；At present both at home and abroad, it there is no the power such as integrated prestressing tendon entire beam tension and each steel strand wires initial stress
The demand of tensioning two is in the prestressing force pull system of integration.
The content of the invention
It is an object of the invention to：There is provided a kind of power such as prestressing tendon uniform tensioning intelligent tensioning system, the system is one
The initial stress tensioning such as the integrated each steel strand wires of prestressing tendon of kind and entire beam tension function are in uniform tensioning of power such as the prestressing tendons of one
Intelligent tensioning system, while the method that the system is used for the uniform tensioning of power such as prestressing tendon is provided, to solve prior art
Existing above mentioned problem.
The technical scheme to solve the above problems is：A kind of uniform tensioning intelligent tensioning system of the power such as prestressing tendon, its feature
It is：The uniform tensioning intelligent tensioning system of the power such as the prestressing tendon includes power pretension integral tension intelligence jack, the height such as m platforms
Pressuring oil pipe, data wire, n intelligent hydraulic pumping plant and control system；M, n span is：M, n is respectively small more than or equal to 2
In 50 any even number；
The power pretension integral tension intelligence jack such as described by the power such as twisted wire pre-tightening apparatus, integral tension clamping device, wear
Heart integral tension device and the part of displacement measuring device four composition；Punching integral tension device positioned at etc. power pretension integral tension intelligence
The rearmost end of energy jack, integral tension clamping device are installed on by bolt on the piston of punching integral tension device；Twisted wire
It is installed on etc. power pre-tightening apparatus by bolt on the fixed piston of integral tension clamping device；Displacement measuring device is pacified by bolt
Loaded on punching integral tension device；
The intelligent hydraulic pumping plant is to provide power for jack top, and the hydraulic power exported by pumping plant drives jack
Stretch cylinder and contracting cylinder；Each intelligent hydraulic pumping plant includes motor, plunger pump, control valve, hydraulic transducer and fuel tank；Every pumping plant can
Drive the power pretension integral tension intelligence jack such as one or more；
The independent control that the control system includes the integrated control system being integrated in intelligent hydraulic pumping plant or is independently arranged
System processed；Including each self-driven one or more by a main intelligent hydraulic pumping plant with control system and more auxiliary pump stations
The power pretension integral tension intelligence jack such as platform；An either control system controls more intelligent hydraulic pumping plants, intelligent hydraulic
Pumping plant drives the power pretension integral tension intelligence jack such as one or more；
Under working condition, the steel strand wires at prestressing tendon both ends to be tensioned pass through work anchor slab, work clip sheet, limiting plate and work
Tool intermediate plate with etc. the anchored end of the power pre-tightening apparatus such as the twisted wire of power pretension integral tension intelligence jack be connected；It is overall etc. power pretension
Connected between each jack and pumping plant of tensioning intelligence jack by high-pressure oil pipe, etc. power pretension integral tension intelligence jack
It is connected between control system by data wire.
The further technical scheme of the uniform tensioning intelligent tensioning system of the power such as described prestressing tendon is：The power pretension such as described
The power pre-tightening apparatus such as the twisted wire of integral tension intelligence jack include single pretension piston, seal assembly, rear end cap, cylinder barrel, preceding
By being threadably mounted on cylinder barrel, seal assembly is arranged on single pretension piston for end cap and tool clamping piece, rear end cap and drive end bearing bracket
On, the power pre-tightening apparatus such as whole twisted wire is divided into independent sealing tensioning cavity and sealing backhaul cavity；All single pretensions are lived
The sealing tensioning cavity of plug is interconnected, and the sealing backhaul cavity of all single pretension pistons is interconnected.
The integral tension clamping device of the power pretension integral tension intelligence jack such as described includes fixed piston, top anchor group
Part, instrument anchor slab, movable cylinder barrel, tool clamping piece, tight anchor pressing plate and preloading spring；Top anchor assemblies are fixed on work by bolt
On moveable cylinder, instrument anchor slab is fixed on fixed piston by bolt, and tight anchor pressing plate is fixed on activity by bolt
On cylinder barrel, tool clamping piece and preloading spring are arranged on instrument anchor slab, are fixed by tight anchor pressing plate pretension；Movable cylinder barrel or so moves
It is dynamic, drive top anchor assemblies and tight anchor pressing plate to realize automatic clamping and loose anchor.
The punching integral tension device of the power pretension integral tension intelligence jack such as described includes location nut, plug, work
Plug, oil cylinder, punching set, rear sealing plate, hold-down ring, rear position plate and guide cylinder；Piston is arranged in oil cylinder, and oil cylinder both ends pass through
Screw thread installation location nut, plug, rear sealing plate and hold-down ring；Punching set is arranged on plug；Guide cylinder is installed by screw thread
In location nut, rear position plate matches with guide cylinder and is installed on punching by bolt and puts.
Related another technical scheme is：A kind of method of the uniform tensioning of the power such as prestressing tendon, it is using in the present invention
The method that the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon stated realizes the uniform tensioning of the power such as prestressing tendon, in implementation process
In, a holding device is respectively adopted etc. each steel strand wires in power pretension integral tension intelligence jack pair prestressing tendon, respectively
Holding device is isobaric using connection, the power pretension such as carries out to the primary stress of steel strand wires；The uniform tensioning intelligence of the power such as prestressing tendon
Tensioning system carries out the clamping of entire beam tension intermediate plate, the whole beam synchronization grading tension of more jacking rows, while automatic record to prestressing tendon
The stretch value of steel strand wires in the uniform stretching process of the power such as prestressing tendon.
A kind of method of the uniform tensioning of the power such as described prestressing tendon comprises the concrete steps that：
A, system is installed：
A1, reeve and installment work anchor slab, work clip sheet, limiting plate, tool clamping piece；
By the steel strand wires at prestressing tendon both ends to be tensioned through work anchor slab, work clip sheet, limiting plate and tool clamping piece with
The anchored end of the power pre-tightening apparatus such as the twisted wire etc. power pretension integral tension intelligence jack is connected；
The power pretension integral tension intelligence jack such as A2, installation and control system：
By etc. power pretension integral tension intelligence jack each jack and pumping plant between connected by high-pressure oil pipe, etc. power
It is connected between pretension integral tension intelligence jack and control system by data wire；
B, tensioning：
The power pretension tensioning such as B1, more twisted wires：The power pretension tensioning such as more twisted wires is carried out by the power such as twisted wire pre-tightening apparatus；
B2：The clamping of entire beam tension intermediate plate, the whole beam synchronization grading tension of more jacking rows：When through power such as B1 steps, more twisted wires
When pretension tensioning is tightened to the 10% of design stretching force in advance, system automatically selects carries out entire beam tension folder by integral tension clamping device
Piece clamps, and is held in place；Each pretension piston retraction of the power pre-tightening apparatus such as twisted wire, then carries out whole beam by punching integral tension device
Synchronous grading tension and pause；
C：Unloading anchoring, Song Jia：After the completion of pressurize to be tensioned, carry out slowly unloading and complete, integral tension clamping device is opened
Begin to unclamp the power pretension integral tension such as intermediate plate, dismounting intelligence.
The uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention is integrated prestressing tendon steel strand wires single tendon stretch
Function with integral tension is in the tensioning system of one, to prestressing tendon initial stress and entire beam tension power, respectively disposable tensioning
In place, and for intelligent jack, Intelligent pumping station the intelligent tensioning system combined, therefore a kind of power such as prestressing tendon of the present invention
The uniform tensioning intelligent tensioning system and its method for the uniform tensioning of the power such as prestressing tendon has the characteristics that and beneficial effect：
1st, tensioning quality is good, can overcome existing for the prestressing force intelligent tensioning system of existing entire beam tension in prestressing tendon beam
Each steel strand wires unbalance stress；The initial stress uniformity of prestressing tendon does not ensure the problem of fracture of wire or stripped thread phenomenon easily occur：
A kind of uniform tensioning intelligent tensioning system of the power such as prestressing tendon of invention and its uniformly opened for power such as prestressing tendons
The method of drawing is adopted respectively in implementation process etc. each steel strand wires in power pretension integral tension intelligence jack pair prestressing tendon
With a holding device, each holding device is isobaric using connection, the power pretension such as carries out to the primary stress of steel strand wires；Prestressing tendon
The clamping of entire beam tension intermediate plate, the synchronously classification of the whole beam of more jacking rows are carried out to prestressing tendon etc. the uniform tensioning intelligent tensioning system of power
Draw；
And existing prestressing force intelligent tensioning system is all entire beam tension, the single strand in no halved tie is opened
Draw；After prestressing tendon steel stranded wire penetrating adapter, moveable anchor is loaded onto at steel strand wires both ends simultaneously and intermediate plate carries out prestressing force entire beam tension, and
The tension force of each single strand is not adjusted, certainly will cause each steel strand wires unbalance stress in prestressing tendon beam；The initial stress of prestressing tendon
Uniformity does not ensure fracture of wire or stripped thread phenomenon easily occur.
2nd, operating efficiency is high：
The uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention is the power pretensions such as integrated prestressing tendon steel strand wires
Function with integral tension is in the tensioning system of one, to prestressing tendon initial stress and entire beam tension power, respectively disposable tensioning
In place, operating efficiency is high.
3rd, structure type is various, applied widely：
1. the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention can drive one by an intelligent hydraulic pumping plant
Platform integral tension intelligence jack forms, and completes the power pretensions such as more twisted wires and integral tension continuously operation function free of discontinuities.
2. the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention also can by a main intelligent hydraulic pumping plant and
The power pretension integral tension intelligence jack composition such as each self-driven one or more of more auxiliary pump stations, completes the power such as more twisted wires
The continuous operation function free of discontinuities of pretension and integral tension.
3. the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention can also control more by a bench control system
Intelligent hydraulic pumping plant, intelligent hydraulic pumping plant drive the power pretension integral tension intelligence jack composition such as one or more, completed
The continuous operation function free of discontinuities of the power pretensions such as more twisted wires and integral tension.
Below, with reference to accompanying drawing and embodiment to a kind of uniform tensioning intelligent tensioning system of the power such as prestressing tendon of the present invention
And its technical characteristic further instruction of the method for the uniform tensioning of the power such as prestressing tendon.
Brief description of the drawings
Fig. 1 is one of overall structure diagram of the uniform tensioning intelligent tensioning system of the power such as prestressing tendon（The power such as single beam are equal
Even tensioning intelligent tensioning system）；
Fig. 2 is the two of the overall structure diagram of the uniform tensioning intelligent tensioning system of the power such as prestressing tendon（The power such as multi beam are equal
Even tensioning intelligent tensioning system diagram）；
Fig. 3 is the control principle drawing of the uniform tensioning intelligent tensioning system of the power such as prestressing tendon；
Fig. 4 such as is at the uniform tensioning intelligent tensioning jack structure of power and the installment state schematic diagram；
Fig. 5 such as is at the power pre-tightening apparatus structural representations such as the twisted wire of power pretension integral tension intelligence jack；
Fig. 6 such as is at the integral tension clamping device structural representation of power pretension integral tension intelligence jack；
Fig. 7 such as is at the punching integral tension apparatus structure schematic diagram of power pretension integral tension intelligence jack.
In figure：
1- intelligent hydraulic pumping plants, 2- stretch-draw jacks；
The power pre-tightening apparatus such as the power pretension integral tension intelligence jack such as 3-, 31- twisted wires, 32- integral tension clamping devices,
33- punching integral tension devices；
The single pretension pistons of 311-, 312- rear end caps, 313- seal assemblies, 314- cylinder barrels, 315- drive end bearing brackets, 316- instruments
Intermediate plate；
321- fixed pistons, 322- tops anchor assemblies, 323- instrument anchor slabs, 324- activity cylinder barrels, 325- tool clamping pieces, 326-
Tight anchor pressing plate, 327- preloading springs；
331- location nuts, 332- plugs, 333- pistons, 334- oil cylinders, 335- punching sets, sealing plate after 336-, 337-
Hold-down ring, 338- rear position plates, 339- guide cylinders；
4- high-pressure oil pipes, 5- data wires, 6- limiting plates, 7- work clip sheets, 8- work anchor slabs, 9- steel strand wires, 10- beam bodies,
11- tool clamping pieces.
Embodiment
Embodiment one：
A kind of uniform tensioning intelligent tensioning system of the power such as single beam prestressing tendon：
As shown in figure 1, the uniform tensioning intelligent tensioning system of the power such as described prestressing tendon includes the power pretension integral tensions such as 2
Intelligent jack 3, high-pressure oil pipe 4,5,2 intelligent hydraulic pumping plants 1 of data wire and control system 2；
As shown in figure 4, the power pretension integral tension intelligence jack 3 such as described is by the power such as twisted wire pre-tightening apparatus 31, entirety
Draw clamping device 32, punching integral tension device 33 and the part of displacement measuring device 34 4 composition；Punching integral tension device 33
Positioned at etc. power pretension integral tension intelligence jack rearmost end, it is whole that integral tension clamping device 32 by bolt is installed on punching
On the piston of body tensioning equipment 33；The power such as twisted wire pre-tightening apparatus 31 is installed on the fixation of integral tension clamping device 32 by bolt
On piston；Displacement measuring device 34 is installed on punching integral tension device 33 by bolt；
The intelligent hydraulic pumping plant 1 is to provide power for jack top, and the hydraulic power exported by pumping plant drives very heavy
Stretch cylinder and contracting cylinder in top；Each intelligent hydraulic pumping plant includes motor, plunger pump, control valve, hydraulic transducer and fuel tank；Every pumping plant
The power pretension integral tension intelligence jack such as one or more can be driven（In Fig. 1, two pumps station drives the power such as one pre- respectively
Tight integral tension intelligence jack；
The independent control that the control system 2 includes the integrated control system being integrated in intelligent hydraulic pumping plant or is independently arranged
System processed；
Under working condition, the steel strand wires at prestressing tendon both ends to be tensioned pass through work anchor slab 8, work clip sheet 7, limiting plate 6
With tool clamping piece 11 with etc. the anchored end of the power pre-tightening apparatus 31 such as the twisted wire of power pretension integral tension intelligence jack 3 be connected；Deng
Connected by high-pressure oil pipe 4 between each jack and pumping plant of power pretension integral tension intelligence jack 3, integrally opened etc. power pretension
Draw and be connected between intelligent jack and control system 2 by data wire 5.
As shown in figure 5, the power pre-tightening apparatus 31 such as twisted wire of the power pretension integral tension intelligence jack 3 such as described includes：It is single
Root pretension piston 311, seal assembly 313, rear end cap 312, cylinder barrel 314, drive end bearing bracket 315 and tool clamping piece 316, rear end cap 312
With drive end bearing bracket 315 by being threadably mounted on cylinder barrel 314, seal assembly 313 is arranged on single pretension piston 311, will be whole
The power pre-tightening apparatus such as twisted wire is divided into independent sealing tensioning cavity and sealing backhaul cavity；All single pretension pistons 311 it is close
Envelope tensioning cavity is interconnected, and the sealing backhaul cavity of all single pretension pistons 311 is interconnected.
As shown in fig. 6, the integral tension clamping device 32 of the power pretension integral tension intelligence jack 3 such as described includes：Gu
Fixed piston 321, top anchor assemblies 322, instrument anchor slab 323, movable cylinder barrel 324, tool clamping piece 325, tight anchor pressing plate 326 and pretension bullet
Spring 327；Top anchor assemblies are fixed on movable cylinder barrel 324 by bolt, and instrument anchor slab 323 is fixed on solid by bolt
On fixed piston 311, tight anchor pressing plate 326 is fixed on movable cylinder barrel 324 by bolt, tool clamping piece 325 and preloading spring
327 are arranged on instrument anchor slab 325, are fixed by the tight pretension of anchor pressing plate 326.Movable cylinder barrel 324 moves left and right, and drives top anchor group
Part 322 and tight anchor pressing plate 326 realize automatic clamping and loose anchor.
As shown in fig. 7, the punching integral tension device 33 of the power pretension integral tension intelligence jack 3 such as described includes：It is fixed
Position nut 331, plug 332, piston 333, oil cylinder 334, punching set 335, rear sealing plate 336, hold-down ring 337, rear position plate 338
With guide cylinder 339；Piston 333 is arranged in oil cylinder 334, and location nut 331, plug 332 are installed in the both ends of oil cylinder 334 by screw thread
With rear sealing plate 336, hold-down ring 337；Punching set 335 is arranged on plug 332；Guide cylinder 339 is by being threadably mounted at positioning
On nut 331, rear position plate 338 is matched with guide cylinder 339 and is installed on by bolt on punching set 335.
One kind as the embodiment of the present invention one converts, the uniform tensioning intelligent tensioning system of power such as described prestressing tendon
Number m etc. power pretension integral tension intelligence jack 3 can be increased or decreased, and m span is：M is more than or equal to 2
Any even number less than 50, depending on the beam number of the prestressing tendon of entire beam tension as needed, as Fig. 2 represents two beam prestressing tendons,
Then etc. the number m of power pretension integral tension intelligence jack 3 is 4, and two beam prestressing tendon both ends have the power pretensions such as two whole respectively
Body tensioning intelligence jack 3.
As one kind conversion of the embodiment of the present invention one, the number n of intelligent hydraulic pumping plant 1 and the controlling party of control system 2
Formula can also have following several ways：
1. the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention can drive one by an intelligent hydraulic pumping plant
Platform integral tension intelligence jack forms, and completes the power pretensions such as more twisted wires and integral tension continuously operation function free of discontinuities；
2. the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention also can by a main intelligent hydraulic pumping plant and
The power pretension integral tension intelligence jack composition such as more auxiliary pump stations each self-driven one or m platforms, completes the power such as more twisted wires
The continuous operation function free of discontinuities of pretension and integral tension；
3. the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention can also control n platform intelligence by a bench control system
Energy hydraulic power unit, the 1 intelligent hydraulic pumping plant driving power pretension integral tension intelligence such as one or m platforms jack composition, is completed
The continuous operation function free of discontinuities of the power pretensions such as more twisted wires and integral tension；M, n span is：M, n be respectively be more than etc.
It is less than 50 any even number in 2.
It is that an intelligent hydraulic pumping plant drives an integral tension intelligence jack shown in Fig. 4.
Due to by control system control hydraulic power unit drive an integral tension intelligence jack Control system architecture with
And control mode is all that those skilled in the art can be implemented using prior art, here is omitted.
Embodiment two
A kind of method of the uniform tensioning of the power such as prestressing tendon：
This method is to realize prestressing force using the uniform tensioning intelligent tensioning system of the power such as the prestressing tendon described in embodiment one
The method of the uniform tensioning of the power such as beam, in implementation process, etc. each in power pretension integral tension intelligence jack pair prestressing tendon
A holding device is respectively adopted in root steel strand wires, and each holding device is isobaric using connection, the primary stress of steel strand wires is carried out etc.
Power pretension；The uniform tensioning intelligent tensioning system of the power such as prestressing tendon carries out the clamping of entire beam tension intermediate plate, more jackings to prestressing tendon
The whole beam synchronization grading tension of row, meanwhile, the uniform tensioning intelligent tensioning system of the power such as prestressing tendon is uniformly opened in power such as prestressing tendons
Automatically steel strand wires stretch value is recorded during drawing
This method comprises the concrete steps that：
A, system is installed：
A1, reeve and installment work anchor slab, work clip sheet, limiting plate, tool clamping piece；
The steel strand wires at prestressing tendon both ends to be tensioned are passed through into work anchor slab 8, work clip sheet 7, limiting plate 6 and tool clamping piece
11 with etc. the anchored end of the power pre-tightening apparatus 31 such as the twisted wire of power pretension integral tension intelligence jack 3 be connected；
The power pretension integral tension intelligence such as A2, installation jack 3 and control system：（Referring to Fig. 1, Fig. 2）
By etc. power pretension integral tension intelligence jack each jack and pumping plant between connected by high-pressure oil pipe 4, etc.
It is connected between power pretension integral tension intelligence jack and control system 2 by data wire 5；
B, tensioning：
The power pretension tensioning such as B1, more twisted wires：The power pretension tensioning such as more twisted wires is carried out by the power such as twisted wire pre-tightening apparatus 31；
B2：The clamping of entire beam tension intermediate plate, the whole beam synchronization grading tension of more jacking rows：When through power such as B1 steps, more twisted wires
When pretension tensioning is tightened to the 10% of design stretching force in advance, system automatically selects carries out entire beam tension by integral tension clamping device 32
Intermediate plate clamps, and is held in place；31 each pretension piston of the power such as twisted wire pre-tightening apparatus bounces back, and is then entered by punching integral tension device 33
The whole beam synchronization grading tension of row and pause；
C：Unloading anchoring, Song Jia：After the completion of pressurize to be tensioned, carry out slowly unloading and complete, integral tension clamping device 32
Start to unclamp the power pretension integral tension such as intermediate plate, dismounting intelligence.
Claims (6)
- A kind of 1. uniform tensioning intelligent tensioning system of the power such as prestressing tendon, it is characterised in that：The power such as the prestressing tendon are uniformly opened Intelligent tensioning system is drawn to include the power pretension integral tension intelligence jack such as m platforms（3）, high-pressure oil pipe（4）, data wire（5）, n Intelligent hydraulic pumping plant（1）And control system（2）；M, n span is：M, n is respectively to be more than or equal to the 2 any idols for being less than 50 Number；The power pretension integral tension intelligence jack such as described（3）By the power pre-tightening apparatus such as twisted wire（31）, integral tension clamping device （32）, punching integral tension device（33）And displacement measuring device（34）Four parts form；Punching integral tension device（33）Position In etc. power pretension integral tension intelligence jack rearmost end, integral tension clamping device（32）It is whole that punching is installed on by bolt Body tensioning equipment（33）Piston on；The power pre-tightening apparatus such as twisted wire（31）Integral tension clamping device is installed on by bolt（32） Fixed piston on；Displacement measuring device（34）Punching integral tension device is installed on by bolt（33）On；The intelligent hydraulic pumping plant（1）It is to provide power for jack, the hydraulic power exported by pumping plant drives jack to stretch Cylinder and contracting cylinder；Each intelligent hydraulic pumping plant includes motor, plunger pump, control valve, hydraulic transducer and fuel tank；Every pumping plant can drive Move the power pretension integral tension intelligence jack such as one or more；The control system（2）Including the integrated control system being integrated in intelligent hydraulic pumping plant or the independent control being independently arranged System；Including by a main intelligent hydraulic pumping plant with control system and each self-driven one or more, more auxiliary pump stations Etc. power pretension integral tension intelligence jack；An either control system controls more intelligent hydraulic pumping plants, intelligent hydraulic pump Stand and drive the power pretension integral tension intelligence jack such as one or more；Under working condition, the steel strand wires at prestressing tendon both ends to be tensioned pass through work anchor slab（8）, work clip sheet（7）, limiting plate （6）And tool clamping piece（11）With etc. power pretension integral tension intelligence jack（3）The power pre-tightening apparatus such as twisted wire（31）Anchoring End is connected；Pass through high-pressure oil pipe between each jack and pumping plant etc. power pretension integral tension intelligence jack（4）Connection, etc. power Pretension integral tension intelligence jack and control system（2）Between pass through data wire（5）It is connected.
- 2. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon according to claim 1, it is characterised in that：The power such as described Pretension integral tension intelligence jack（3）The power pre-tightening apparatus such as twisted wire（31）Including：Single pretension piston（311）, sealing group Part（313）, rear end cap（312）, cylinder barrel（314）, drive end bearing bracket（315）And tool clamping piece（316）, rear end cap（312）And drive end bearing bracket （315）By being threadably mounted at cylinder barrel（314）On, seal assembly（313）Installed in single pretension piston（311）On, will be whole The power pre-tightening apparatus such as twisted wire is divided into independent sealing tensioning cavity and sealing backhaul cavity；All single pretension pistons（311）'s Sealing tensioning cavity is interconnected, all single pretension pistons（311）Sealing backhaul cavity be interconnected.
- 3. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon according to claim 1, it is characterised in that：The power such as described Pretension integral tension intelligence jack（3）Integral tension clamping device（32）Including fixed piston（321）, top anchor assemblies （322）, instrument anchor slab（323）, movable cylinder barrel（324）, tool clamping piece（325）, tight anchor pressing plate（326）And preloading spring（327）； Top anchor assemblies are fixed on movable cylinder barrel by bolt（324）On, instrument anchor slab（323）Fixation is fixed on by bolt Piston（311）On, tight anchor pressing plate（326）Movable cylinder barrel is fixed on by bolt（324）On, tool clamping piece（325）With it is pre- Tight spring（327）Installed in instrument anchor slab（323）On, pass through tight anchor pressing plate（326）Pretension is fixed；Movable cylinder barrel（324）Left and right It is mobile, drive top anchor assemblies（322）With tight anchor pressing plate（326）Realize automatic clamping and loose anchor.
- 4. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon according to claim 1, it is characterised in that：The power such as described Pretension integral tension intelligence jack（3）Punching integral tension device（33）Including location nut（331）, plug（332）, it is living Plug（333）, oil cylinder（334）, punching set（335）, rear sealing plate（336）, hold-down ring（337）, rear position plate（338）And guide cylinder （339）；Piston（333）Installed in oil cylinder（334）It is interior, oil cylinder（334）Both ends location nut is installed by screw thread（331）, plug （332）, rear sealing plate（336）And hold-down ring（337）；Punching set（335）Installed in plug（332）On；Guide cylinder（339）Pass through It is threadably mounted at location nut（331）On, rear position plate（338）With guide cylinder（339）Match and punching is installed on by bolt Set（335）On.
- A kind of 5. method of the uniform tensioning of the power such as prestressing tendon, it is characterised in that：It is to utilize the prestressing force described in claim 1 The method that the uniform tensioning intelligent tensioning system of the power such as beam realizes the uniform tensioning of the power such as prestressing tendon, it is pre- etc. power in implementation process A holding device is respectively adopted in each steel strand wires in tight integral tension intelligence jack pair prestressing tendon, and each holding device is adopted It is isobaric with connection, the power pretension such as carry out to the primary stress of steel strand wires；The uniform tensioning intelligent tensioning system pair of the power such as prestressing tendon Prestressing tendon carries out the clamping of entire beam tension intermediate plate, the whole beam synchronization grading tension of more jacking rows, while automatic record prestressing tendon etc. The stretch value of steel strand wires in the uniform stretching process of power.
- A kind of 6. method of the uniform tensioning of the power such as prestressing tendon according to claim 5, it is characterised in that：The tool of this method Body step is：A, system is installed：A1, reeve and installment work anchor slab, work clip sheet, limiting plate, tool clamping piece；The steel strand wires at prestressing tendon both ends to be tensioned are passed through into work anchor slab（8）, work clip sheet（7）, limiting plate（6）And tool holder Piece（11）With etc. power pretension integral tension intelligence jack（3）The power pre-tightening apparatus such as twisted wire（31）Anchored end be connected；The power pretension integral tension intelligence jack such as A2, installation（3）And control system：By etc. power pretension integral tension intelligence jack each jack and pumping plant between pass through high-pressure oil pipe（4）Connection, etc. power Pretension integral tension intelligence jack and control system（2）Between pass through data wire（5）It is connected；B, tensioning：The power pretension tensioning such as B1, more twisted wires：By the power pre-tightening apparatus such as twisted wire（31）Carry out the power pretension tensioning such as more twisted wires；B2：The clamping of entire beam tension intermediate plate, the whole beam synchronization grading tension of more jacking rows：When through power pretensions such as B1 steps, more twisted wires When tensioning is tightened to the 10% of design stretching force in advance, system is automatically selected by integral tension clamping device（32）Carry out entire beam tension folder Piece clamps, and is held in place；The power pre-tightening apparatus such as twisted wire（31）Each pretension piston retraction, then by punching integral tension device（33） Carry out whole beam synchronization grading tension and pause；C：Unloading anchoring, Song Jia：After the completion of pressurize to be tensioned, carry out slowly unloading and complete, integral tension clamping device（32）Open Begin to unclamp the power pretension integral tension such as intermediate plate, dismounting intelligence.
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| CN201611114719.3A CN106523448B (en) | 2016-12-07 | 2016-12-07 | The uniform tensioning intelligent tensioning system of the power such as prestressing tendon and its method for the uniform tensioning of the power such as prestressing tendon |
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| CN201611114719.3A CN106523448B (en) | 2016-12-07 | 2016-12-07 | The uniform tensioning intelligent tensioning system of the power such as prestressing tendon and its method for the uniform tensioning of the power such as prestressing tendon |
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| CN108408635A (en) * | 2018-04-28 | 2018-08-17 | 东南大学 | A kind of combined bay that lifting jack detachable load is combined with guiding |
| CN110847040A (en) * | 2019-10-28 | 2020-02-28 | 广西大学 | Intelligent equal-tension system of magnetic flux sensor and operation method thereof |
| CN111056476A (en) * | 2019-12-04 | 2020-04-24 | 柳州泰姆预应力机械有限公司 | Intelligent lifting control method and system |
| CN114808718A (en) * | 2022-05-05 | 2022-07-29 | 武汉理工大学 | Drawing instrument for graded tensioning and graded tensioning method |
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Address after: 300142 Tianjin City Binhai New Area Tianjin self trade test area (Airport Economic Zone) west two road 82 Li port mansion 201 Applicant after: China Railway Design Group Limited Applicant after: Liuzhou OVM Machinery Co., Ltd. Address before: 300142 Tianjin Binhai New Area Airport Economic Zone West two road 82 Li port mansion 201 Applicant before: China Railway Third Survey and Design Institute Group Ltd. Applicant before: Liuzhou OVM Machinery Co., Ltd. |
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