CN106523448A - Intelligent tensioning system used for pre-stress tendon constant-force uniform tensioning and method used for pre-stress tendon constant-force uniform tensioning - Google Patents
Intelligent tensioning system used for pre-stress tendon constant-force uniform tensioning and method used for pre-stress tendon constant-force uniform tensioning Download PDFInfo
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- CN106523448A CN106523448A CN201611114719.3A CN201611114719A CN106523448A CN 106523448 A CN106523448 A CN 106523448A CN 201611114719 A CN201611114719 A CN 201611114719A CN 106523448 A CN106523448 A CN 106523448A
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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)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses an intelligent tensioning system used for pre-stress tendon constant-force uniform tensioning. The intelligent tensioning system comprises m constant-force pre-tightening integral tensioning intelligent lifting jacks, high-pressure oil tubes, data lines, n intelligent hydraulic pump stations and a control system, wherein each constant-force pre-tightening integral tensioning intelligent lifting jack consists of a stranded wire constant-force pre-tightening device, an integral tensioning clamping device, a cross-core integral tensioning device and a displacement measuring device; under a working state, steel strands at the two ends of a to-be-tensioned pre-stress tendon passes through a working anchor plate, a working clamping sheet, a limiting plate and a tool clamping sheet, and then are connected with an anchoring end of the stranded wire constant-force pre-tightening device of each constant-force pre-tightening integral tensioning intelligent lifting jack; each lifting jack of each constant-force pre-tightening integral tensioning intelligent lifting jack is connected with the corresponding pump station through the corresponding high-pressure oil tube; and the constant-force pre-tightening integral tensioning intelligent lifting jacks are connected with the control system through the data lines. The system is good in tensioning quality, is high in working efficiency, and can overcome the problems of an existing pre-stress intelligent tensioning system for whole-tendon tensioning. M and n are any even number greater than or equal to 2 and smaller than 50.
Description
Technical field
The present invention relates to the uniform tensioning intelligence of power such as a kind of engineering tensioning system and its application, 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, to carry out tensioning 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 using intelligent tensioning system
System, carries out automatic, synchronous and accurate tensioning to prestressing tendon；It is, by computer controls stretching oil pump and jack, to utilize
The measurement data feedback of force cell and displacement transducer, realizes prestressing force synchronously 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, prestressed stretch-draw is effective to ensure that
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 that, in the form of integral tension, each jack is included
The anchoring of all prestressing force twisted wires is carried out tensioning first with moveable anchor, then puts Zhang Zaijin by a set of work anchor, kit anchor
OK；Intelligent jack and tensioning system that these patents are adopted, are all entire beam tensions, do not have the single strand in halved tie to carry out
Tensioning；After prestressing tendon steel stranded wire penetrating adapter, steel strand wires two ends are loaded onto moveable anchor and intermediate plate simultaneously and carry 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 affect prestressing tendon relaxation property, become effective prestress and damage for a long time
Lose excessive one of the main reasons；If after prestressing tendon steel stranded wire penetrating adapter, installation tool anchor, then used using single steel strand
Jack is carried out by root pretension tensioning, can accomplish that initial stress is uniform, but should for the pre- of several or even tens of steel strand wires compositions
Power Shu Eryan, work efficiency are too low；At present both at home and abroad, there is no the power such as integrated prestressing tendon entire beam tension and each steel strand wires initial stress
Two demand of tensioning 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 each steel strand wires of kind integrated prestressing tendon and entire beam tension function are in the uniform tensioning of power such as prestressing tendon of one
Intelligent tensioning system, while the method there is provided the system is used for the uniform tensioning of power such as prestressing tendon, to solve prior art
The problems referred to above of presence.
The technical scheme for solving 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 the power pretension such as m platforms integral tension intelligence jack, height
Pressuring oil pipe, data wire, n intelligent hydraulic pumping plant and control system；The span of m, n is：M, n are respectively little more than or equal to 2
In 50 any even number；
The power pretension integral tension intelligence jack such as described is whole by the power pre-tightening apparatus such as twisted wire, integral tension clamping device, punching
Body tensioning equipment and four part of displacement measuring device composition；Punching integral tension device be located at etc. power pretension integral tension intelligence thousand
The rearmost end on jin top, integral tension clamping device are installed on the piston of punching integral tension device by bolt；The power such as twisted wire
Pre-tightening apparatus are installed on the fixed piston of integral tension clamping device by bolt；Displacement measuring device is installed on by bolt
On punching integral tension device；
The intelligent hydraulic pumping plant is to provide power for jack top, drives jack to stretch cylinder by the hydraulic power that pumping plant is exported
And contracting cylinder；Each intelligent hydraulic pumping plant includes motor, plunger displacement pump, control valve, hydraulic transducer and fuel tank；Every pumping plant can drive
The power pretension such as one or multiple stage integral tension intelligence jack；
The control system includes the integrated control system being integrated in intelligent hydraulic pumping plant or the independent control system being independently arranged
System；Including by a main intelligent hydraulic pumping plant with control system and multiple stage auxiliary pump station each self-driven one or multiple stage etc.
Power pretension integral tension intelligence jack；Or a control system controls multiple stage intelligent hydraulic pumping plant, intelligent hydraulic pumping plant
Drive the power pretension such as or multiple stage integral tension intelligence jack；
Under working condition, the steel strand wires at prestressing tendon two ends to be tensioned pass through work anchor slab, work clip sheet, limiting plate and tool kit
Piece with etc. the anchored end of the power pre-tightening apparatus such as twisted wire of power pretension integral tension intelligence jack be connected；Etc. power pretension integral tension
Connected by high-pressure oil pipe between each jack of intelligent jack and pumping plant, etc. power pretension integral tension intelligence jack and control
It is connected by data wire between system processed.
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 twisted wire of integral tension intelligence jack include single pretension piston, black box, rear end cap, cylinder barrel, front
, by being threadably mounted on cylinder barrel, black box 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 are divided into 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 is moved
It is dynamic, drive top anchor assemblies and tight anchor pressing plate to realize clamping automatically 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 two ends pass through
Screw thread installs location nut, plug, rear sealing plate and hold-down ring；Punching set is on plug；Guide cylinder is installed by screw thread
In location nut, rear position plate is matched with guide cylinder and is installed on punching by bolt and put.
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 entire beam tension intermediate plate clamping, the whole beam synchronization grading tension of many jacking rows to prestressing tendon, while recording automatically
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 is comprised the concrete steps that：
A, system are installed：
A1, reeve and installment work anchor slab, work clip sheet, limiting plate, tool clamping piece；
By the steel strand wires at prestressing tendon two ends to be tensioned through work anchor slab, work clip sheet, limiting plate and tool clamping piece with etc. power
The anchored end of the power pre-tightening apparatus such as the twisted wire of pretension integral tension intelligence jack is connected；
The power pretension such as A2, installation integral tension intelligence jack and control system：
By etc. power pretension integral tension intelligence jack each jack and pumping plant between by high-pressure oil pipe connection, etc. power pretension
It is connected by data wire between integral tension intelligence jack and control system；
B, tensioning：
The power pretension tensioning such as B1, many twisted wires：The power pretension tensioning such as many 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 many jacking rows：When power pretensions such as Jing B1 steps, many twisted wires
When tensioning is tightened to the 10% of design stretching force in advance, system is automatically selected carries out entire beam tension intermediate plate folder by integral tension clamping device
Hold, be held in place；The each pretension piston retraction of the power pre-tightening apparatus such as twisted wire, then carries out whole beam synchronization by punching integral tension device
Grading tension and pause；
C：Unloading anchoring, Song Jia：After the completion of pressurize to be tensioned, carry out slow unloading and complete, integral tension clamping device starts pine
Open the power pretension integral tension intelligence such as intermediate plate, dismounting.
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
With the function of integral tension in the tensioning system of one, to prestressing tendon initial stress and entire beam tension power, the disposable tensioning of difference
In place, and for intelligent jack, Intelligent pumping station the intelligent tensioning system for combining, therefore a kind of power such as prestressing tendon of the present invention
Uniform tensioning intelligent tensioning system and its method for the uniform tensioning of the power such as prestressing tendon have the characteristics that and beneficial effect：
1st, tensioning quality is good, can overcome each steel in the prestressing tendon beam that the prestressing force intelligent tensioning system of existing entire beam tension is present
Twisted wire unbalance stress；The initial stress uniformity of prestressing tendon does not ensure the problem of fracture of wire or stripped thread phenomenon easily occur：
The uniform tensioning intelligent tensioning system of the power such as a kind of prestressing tendon of invention and its for the uniform tensioning of the power such as prestressing tendon
Method is respectively adopted one etc. each steel strand wires in power pretension integral tension intelligence jack pair prestressing tendon in implementation process
Individual holding device, each holding device are isobaric using connection, the power pretension such as carry out to the primary stress of steel strand wires；The power such as prestressing tendon
Uniform tensioning intelligent tensioning system carries out entire beam tension intermediate plate clamping, the whole beam synchronization grading tension of many jacking rows to prestressing tendon；
And existing prestressing force intelligent tensioning system is all entire beam tension, do not have the single strand in halved tie to carry out tensioning；In advance
After stress beam steel stranded wire penetrating adapter, steel strand wires two ends are loaded onto moveable anchor and intermediate plate simultaneously and carry out prestressing force entire beam tension, and do not adjust
The tension force of whole each single strand, certainly will cause each steel strand wires unbalance stress in prestressing tendon beam；The initial stress of prestressing tendon is uniform
Property does not ensure fracture of wire or stripped thread phenomenon easily occur.
2nd, high working efficiency：
The uniform tensioning intelligent tensioning system of the power such as the prestressing tendon of the present invention is power pretensions such as integrated prestressing tendon steel strand wires and whole
The function of body tensioning distinguishes disposable tensioning in place in the tensioning system of one to prestressing tendon initial stress and entire beam tension power,
High working efficiency.
3rd, version is various, applied widely：
1. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon of the present invention can be whole by an intelligent hydraulic pumping plant driving one
Body tensioning intelligence jack composition, completes the power such as many twisted wires pretension and the continuous operation function free of discontinuities of integral tension.
2. the uniform tensioning intelligent tensioning system of the power such as 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 multiple stage auxiliary pump station each self-driven one or multiple stage, completes the power such as many twisted wires
Pretension and the continuous operation function free of discontinuities of integral tension.
3. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon of the present invention can also control multiple stage by a bench control system
Intelligent hydraulic pumping plant, intelligent hydraulic pumping plant drive the power pretension such as or multiple stage integral tension intelligence jack composition, complete
The power such as many twisted wires pretension and the continuous operation function free of discontinuities of integral tension.
Below, with reference to accompanying drawing and embodiment to uniform tensioning intelligent tensioning systems of power such as a kind of prestressing tendons of the present invention
And its technical characteristic further instruction of the method for the uniform tensioning of the power such as prestressing tendon.
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 Dan Shu 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 uniformly opened
Draw 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 such as 3- integral tension intelligence jack, 31- twisted wires, 32- integral tension clamping devices, 33-
Punching integral tension device；
The single pretension pistons of 311-, 312- rear end caps, 313- black boies, 314- cylinder barrels, 315- drive end bearing brackets, 316- tool kit
Piece；
321- fixed pistons, 322- tops anchor assemblies, 323- instrument anchor slabs, 324- activity cylinder barrels, 325- tool clamping pieces, the tight anchors of 326-
Pressing plate, 327- preloading springs；
331- location nuts, 332- plugs, 333- pistons, 334- oil cylinders, 335- punching sets, sealing plate after 336-, 337- are compressed
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- works
Tool intermediate plate.
Specific embodiment
Embodiment one：
A kind of uniform tensioning intelligent tensioning system of 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 tension intelligence such as 2
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 pressed from both sides by the power such as twisted wire pre-tightening apparatus 31, integral tension
Hold device 32, punching integral tension device 33 and 34 4 part of displacement measuring device composition；Punching integral tension device 33 is located at
Etc. the rearmost end of power pretension integral tension intelligence jack, integral tension clamping device 32 is installed on punching by bolt and integrally opens
On the piston of drawing device 33；The power such as twisted wire pre-tightening apparatus 31 are installed on the fixed piston of integral tension clamping device 32 by bolt
On；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, drives jack to stretch by the hydraulic power that pumping plant is exported
Cylinder and contracting cylinder；Each intelligent hydraulic pumping plant includes motor, plunger displacement pump, control valve, hydraulic transducer and fuel tank；Every pumping plant can drive
The dynamic power pretension such as or multiple stage integral tension intelligence jack（In Fig. 1, two pumps station drives the power pretension such as whole respectively
Body tensioning intelligence jack；
The control system 2 includes the integrated control system being integrated in intelligent hydraulic pumping plant or the independent control system being independently arranged
System；
Under working condition, the steel strand wires at prestressing tendon two ends to be tensioned pass through work anchor slab 8, work clip sheet 7, limiting plate 6 and work
Tool intermediate plate 11 with etc. the anchored end of the power pre-tightening apparatus 31 such as twisted wire of power pretension integral tension intelligence jack 3 be connected；It is pre- etc. power
Connected by high-pressure oil pipe 4 between each jack and pumping plant of tight integral tension intelligence jack 3, etc. power pretension integral tension intelligence
Can be connected by data wire 5 between jack and control system 2.
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 include：It is single
Root pretension piston 311, black box 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, black box 313 is arranged on single pretension piston 311, will be whole
The power pre-tightening apparatus such as twisted wire are 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 tight 326 pretension of anchor pressing plate.Movable cylinder barrel 324 is moved left and right, and drives top anchor group
Part 322 and tight anchor pressing plate 326 realize clamping automatically 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 by screw thread in 334 two ends of oil cylinder
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 punching set 335 by bolt.
As uniform tensioning intelligent tensioning systems of power such as one kind conversion of the embodiment of the present invention one, described prestressing tendons
Can increase or decrease etc. number m of power pretension integral tension intelligence jack 3, the span of m is：M is more than or equal to 2
Any even number less than 50, as needed depending on the beam number of the prestressing tendon of entire beam tension, such as Fig. 2 represents two beam prestressing tendons,
Then etc. number m of power pretension integral tension intelligence jack 3 is 4, and two beam prestressing tendon two ends have the power pretensions such as two whole respectively
Body tensioning intelligence jack 3.
As the controlling party of one kind conversion of the embodiment of the present invention one, number n of intelligent hydraulic pumping plant 1 and control system 2
Formula can also have following several ways：
1. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon of the present invention can be whole by an intelligent hydraulic pumping plant driving one
Body tensioning intelligence jack composition, completes the power such as many twisted wires pretension and the continuous operation function free of discontinuities of integral tension；
2. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon of the present invention also can be by a main intelligent hydraulic pumping plant and multiple stage
The power pretension integral tension intelligence jack composition such as auxiliary pump station each self-driven one or m platforms, completes the power pretension such as many twisted wires
And the continuous operation function free of discontinuities of integral tension；
3. the uniform tensioning intelligent tensioning system of the power such as prestressing tendon of the present invention can also be by bench control system control n platform intelligence liquid
Press pump station, 1 intelligent hydraulic pumping plant drive the power pretension such as or m platforms integral tension intelligence jack composition, complete many
The power such as twisted wire pretension and the continuous operation function free of discontinuities of integral tension；The span of m, n is：M, n are respectively little more than or equal to 2
In 50 any even number.
Shown in Fig. 4, it is that an intelligent hydraulic pumping plant drives an integral tension intelligence jack.
Due to by control system control hydraulic power unit drive the Control system architecture of integral tension intelligence jack 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：
The method is to realize prestressing tendon etc. 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 power, in implementation process, etc. each steel in power pretension integral tension intelligence jack pair prestressing tendon
Twisted wire is respectively adopted a holding device, and each holding device is isobaric using connection, the power such as carries out to the primary stress of steel strand wires pre-
Tightly；It is whole that the uniform tensioning intelligent tensioning system of the power such as prestressing tendon carries out entire beam tension intermediate plate clamping, many jacking rows to prestressing tendon
Beam synchronization grading tension, meanwhile, the uniform tensioning intelligent tensioning system of the power such as prestressing tendon is in the uniform tensioning of the power such as prestressing tendon
Automatically steel strand wires stretch value is recorded in journey
The method is comprised the concrete steps that：
A, system are installed：
A1, reeve and installment work anchor slab, work clip sheet, limiting plate, tool clamping piece；
By the steel strand wires at prestressing tendon two ends to be tensioned through work anchor slab 8, work clip sheet 7, limiting plate 6 and tool clamping piece 11 with
The anchored end of the power pre-tightening apparatus 31 such as the twisted wire etc. power pretension integral tension intelligence jack 3 is connected；
The power pretension such as A2, installation integral tension intelligence 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, it is pre- etc. power
It is connected by data wire 5 between tight integral tension intelligence jack and control system 2；
B, tensioning：
The power pretension tensioning such as B1, many twisted wires：The power pretension tensioning such as many 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 many jacking rows：When power pretensions such as Jing B1 steps, many twisted wires
When tensioning is tightened to the 10% of design stretching force in advance, system is automatically selected carries out entire beam tension intermediate plate by integral tension clamping device 32
Clamping, is held in place；31 each pretension piston of the power such as twisted wire pre-tightening apparatus bounces back, and is then carried out by punching integral tension device 33 whole
Beam synchronization grading tension and pause；
C：Unloading anchoring, Song Jia：After the completion of pressurize to be tensioned, carry out slow unloading and complete, integral tension clamping device 32 starts
Unclamp the power pretension integral tension intelligence such as intermediate plate, dismounting.
Claims (6)
1. the uniform tensioning intelligent tensioning system of the power such as a kind of 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 such as m platforms integral tension intelligence jack（3）, high-pressure oil pipe（4）, data wire（5）, n
Intelligent hydraulic pumping plant（1）And control system（2）；The span of m, n is：Any idol of m, n respectively more than or equal to 2 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 constitute；Punching integral tension device（33）Position
In etc. power pretension integral tension intelligence jack rearmost end, integral tension clamping device（32）Punching is installed on by bolt whole
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）Be power to be provided for jack top, jack is driven by the hydraulic power that pumping plant is exported
Stretch cylinder and contracting cylinder；Each intelligent hydraulic pumping plant includes motor, plunger displacement pump, control valve, hydraulic transducer and fuel tank；Every pumping plant can
Drive the power pretension such as or multiple stage integral tension intelligence jack；
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 and multiple stage auxiliary pump station each self-driven one or multiple stage with control system
Etc. power pretension integral tension intelligence jack；Or a control system controls multiple stage intelligent hydraulic pumping plant, intelligent hydraulic pump
Stand and drive the power pretension such as or multiple stage integral tension intelligence jack；
Under working condition, the steel strand wires at prestressing tendon two 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, black box（313）Installed in single pretension piston（311）On, will be whole
The power pre-tightening apparatus such as twisted wire are 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（325）On, by 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 clamping automatically 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）Two 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）Matching is simultaneously installed on punching by bolt
Set（335）On.
5. the method for the uniform tensioning of the power such as a kind of prestressing tendon, it is characterised in that：It is using 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 in implementation process, pre- etc. power
Each steel strand wires in tight integral tension intelligence jack pair prestressing tendon are respectively adopted a holding device, 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 entire beam tension intermediate plate clamping, the whole beam synchronization grading tension of many jacking rows, while record prestressing tendon etc. automatically
The stretch value of steel strand wires in the uniform stretching process of power.
6. the method for the uniform tensioning of power such as a kind of prestressing tendon according to claim 5, it is characterised in that：The tool of the method
Body step is：
A, system are installed：
A1, reeve and installment work anchor slab, work clip sheet, limiting plate, tool clamping piece；
The steel strand wires at prestressing tendon two ends to be tensioned are passed through into work anchor slab（8）, work clip sheet（7）, limiting plate（6）And tool kit
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 such as A2, installation integral tension intelligence jack（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, many twisted wires：By the power pre-tightening apparatus such as twisted wire（31）Carry out the power pretension tensioning such as many twisted wires；
B2：The clamping of entire beam tension intermediate plate, the whole beam synchronization grading tension of many jacking rows：When power pretensions such as Jing B1 steps, many 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 is clamped, 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 slow unloading and complete, integral tension clamping device（32）Open
Begin to unclamp the power pretension integral tension intelligence such as intermediate plate, dismounting.
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112978605A (en) * | 2019-12-04 | 2021-06-18 | 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658297A (en) * | 1970-02-24 | 1972-04-25 | William L Banks Jr | Rope or cable tie including a hydraulic take-up |
| CN102431090A (en) * | 2011-10-25 | 2012-05-02 | 南开大学滨海学院 | Fiber grating precast beam prestress intelligent tensioning control system and implementation method thereof |
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103526948A (en) * | 2013-10-24 | 2014-01-22 | 柳州黔桥工程材料有限公司 | Control method of intelligent tension system and intelligent tension system |
| CN104947592A (en) * | 2015-04-30 | 2015-09-30 | 湖南联智桥隧技术有限公司 | Tensioning and adjusting construction method for slings of sling-type bridge |
| CN205521921U (en) * | 2016-02-25 | 2016-08-31 | 上海大禺预制构件有限公司 | Whole straining means |
| CN206360951U (en) * | 2016-12-07 | 2017-07-28 | 铁道第三勘察设计院集团有限公司 | The uniform tensioning intelligent tensioning system of the power such as prestressing tendon |
-
2016
- 2016-12-07 CN CN201611114719.3A patent/CN106523448B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3658297A (en) * | 1970-02-24 | 1972-04-25 | William L Banks Jr | Rope or cable tie including a hydraulic take-up |
| CN102431090A (en) * | 2011-10-25 | 2012-05-02 | 南开大学滨海学院 | Fiber grating precast beam prestress intelligent tensioning control system and implementation method thereof |
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103526948A (en) * | 2013-10-24 | 2014-01-22 | 柳州黔桥工程材料有限公司 | Control method of intelligent tension system and intelligent tension system |
| CN104947592A (en) * | 2015-04-30 | 2015-09-30 | 湖南联智桥隧技术有限公司 | Tensioning and adjusting construction method for slings of sling-type bridge |
| CN205521921U (en) * | 2016-02-25 | 2016-08-31 | 上海大禺预制构件有限公司 | Whole straining means |
| CN206360951U (en) * | 2016-12-07 | 2017-07-28 | 铁道第三勘察设计院集团有限公司 | The uniform tensioning intelligent tensioning system of the power such as prestressing tendon |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112978605A (en) * | 2019-12-04 | 2021-06-18 | 柳州泰姆预应力机械有限公司 | Intelligent lifting control method and system |
| CN112978605B (en) * | 2019-12-04 | 2024-01-12 | 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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