CN109457614A - Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system and construction method - Google Patents
Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system and construction method Download PDFInfo
- Publication number
- CN109457614A CN109457614A CN201811161633.5A CN201811161633A CN109457614A CN 109457614 A CN109457614 A CN 109457614A CN 201811161633 A CN201811161633 A CN 201811161633A CN 109457614 A CN109457614 A CN 109457614A
- Authority
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- China
- Prior art keywords
- cable
- steel strand
- construction
- stranded wire
- force value
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 92
- 239000010959 steel Substances 0.000 title claims abstract description 92
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 claims description 27
- 238000012216 screening Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
-
- 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses a kind of parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system and construction method, and construction procedure includes: to set up monitoring system, determine grading tension process, tensioning cable force monitoring, unqualified tensioning screening, compensation tensioning, press anchoring, unloading monitoring system, next steel strand stay cable construction.Parallel steel stranded wire stayed Cable Construction Cable Force uniformity monitoring of the present invention and construction method, solve traditional cable tension and are unable to monitor or can only monitor whole rope, cannot be aiming at the problem that single steel strand Suo Li is not provided which according to cable force adjustment is made.When suspension cable integral tension of the present invention, by monitoring the rope force value of each steel strand wires step by step, the uniformity between every steel strand wires is controlled, the cable force adjustment between every steel strand wires is facilitated.This method high degree of automation, control precision is high, and cost of labor less investment, work efficiency is high, securely and reliably, easy to operate, is convenient for standardized construction.
Description
Technical field
The invention belongs to steel strand stay cable construction stage cable force monitoring and technical field of construction, and in particular to a kind of parallel
Steel strand stay cable construction Suo Li uniformity monitoring system and construction method.
Background technique
The group anchor cable that parallel steel stranded wire suspension cable is made of single anticorrosive steel strand, hangs using single steel strand
The form of rope, stretching single steel strand, uniformity when every steel strand tension of suspension cable lead to the deformation of bridge tower, beam.
Steel strand wires so as to cause previous tensioning are loose and Suo Li becomes smaller.As every steel strand wires according to total Suo Liping without equivalent tensioning,
The case where practice of construction Suo Li is not inconsistent with theory certainly will be will cause, the control precision of Suo Li is not achieved.
For the uniformity for improving control precision and Suo Li when stayed Cable Construction, designs a kind of parallel steel stranded wire suspension cable and adopt
With integral tension technique, the construction of every steel strand wires work progress monitoring is carried out using magnetic flux transducer.
Summary of the invention
The present invention mentions aiming at the problem that existing stayed Cable Construction stage steel strand wires discontinuity leads to bridge tower, beam deformation
System and construction method are monitored for a kind of parallel steel stranded wire stayed Cable Construction Suo Li uniformity.
The present invention adopts the following technical solutions to achieve above-mentioned purpose:
Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system, which is characterized in that including the anchor slab, filing appliance of working
Piece, top-pressing jack, magnetic flux transducer, stretch-draw jack, multi-channel switch case, magnetic bullet instrument and host computer；The work anchor
Plate is through on steel strand stay cable, and work clip sheet is located on work anchor slab, and work anchor slab and work clip sheet are for fixing steel strand wires
Suspension cable；The top-pressing jack is installed on work anchor slab rear end, for holding out against after the completion of tensioning to work clip sheet；It is described
Stretch-draw jack is mounted on top-pressing jack rear end, the integral tension for steel strand stay cable；The magnetic flux transducer peace
On steel strand stay cable between top-pressing jack and stretch-draw jack, every steel strand stay cable installs a magnetic flux
Sensor；The multi-channel switch case is connected with magnetic bullet instrument, host computer, and multi-channel switch case electrically connects with magnetic flux transducer
It connects；The multi-channel switch case cooperation magnetic bullet instrument carries out data acquisition to magnetic flux transducer.In the system, host computer is can be with
The computer for directly issuing manipulation command can control multi-channel switch case switching monitoring channel, realize to every steel strand wires oblique pull
The acquisition of magnetic flux transducer data on rope.
Preferably, magnetic bullet instrument itself has operating platform and LCD display, can directly read.
Method with construction is monitored using monitoring system of the present invention, is included the following steps: Step 1: parallel steel stranded wire
Stayed Cable Construction Suo Li uniformity monitors system installation；Step 2: determining 0~100%F of steel strand stay cable according to stretching rope power
Grading tension process starts stretch-draw jack to parallel steel stranded wire drag-line entirety grading tension；Step 3: every grade of stretching rope power adds
After load, within the dwell time, PC control multi-channel switch case switching monitoring channel monitors every by magnetic flux transducer
The rope force value of steel strand stay cable as the control force value of tensioning, and records the rope force value of every steel strand stay cable；Step
Four, host computer reads the rope force value that magnetic flux transducer monitors by magnetic bullet instrument, presses " highway bridge and culvert construction technique normalizing "
The requirement of (JTG TF50-2011) judges whether single steel strand inclined cable force value is qualified, unqualified, carries out step 5, instead
Carry out step 6, the determination requirement are as follows: the difference of the rope force value of single steel strand suspension cable and average rope force value needs≤
3%, the rope force value allowable error of every steel strand stay cable peer is ± 1%；Step 5: oblique to underproof single steel strand
Cable force value, compensating tensioning meets the requirements it；Step 6: starting top-pressing jack after the completion of tensioning, press very heavy
Top holds out against the work clip sheet to work on anchor slab, completes the anchoring of parallel steel stranded wire suspension cable；Step 7: unloading press is very heavy
Top, stretch-draw jack, magnetic flux transducer, multi-channel switch case, magnetic bullet instrument and host computer slice off extra steel strand wires, complete
The tensioning of parallel steel stranded wire suspension cable.
Preferably, grading tension is divided into 20%F, 40%F, 60%F in step 2,80%F, 100%F Pyatyi tensioning, often
Every steel strand stay cable is monitored when grade tensioning, tensioning is compensated to the unqualified stretching rope force value monitored,
To further increase the control precision and Suo Li uniformity of steel strand stay cable.
The beneficial effects of the present invention are:
1, the present invention solves traditional cable tension and is unable to monitor or can only monitor whole rope, cannot be directed to single steel strand
Suo Li was not provided which according to the problem of making cable force adjustment.
2, it when steel strand stay cable integral tension of the present invention, by monitoring the rope force value of each steel strand wires step by step, controls
Uniformity between every steel strand wires is compensated very heavy when monitoring that a certain steel strand stay cable tensioning is unqualified using tensioning
Top carries out tensioning compensation, to guarantee that every steel strand stay cable is met the requirements.
3, the present invention is controlled and is acquired data by host computer, and the degree of automation and control precision are high, cost of labor
Less investment, work efficiency is high, securely and reliably, easy to operate, is convenient for standardized construction.
Detailed description of the invention
Fig. 1 is that parallel steel stranded wire stayed Cable Construction Suo Li uniformity of the present invention monitors system construction drawing.
In figure, 1, top-pressing jack；2, magnetic flux transducer；3, stretch-draw jack；4, multi-channel switch case；5, magnetic bullet
Instrument；6, host computer；7, work anchor slab；8, work clip sheet；9, steel strand stay cable.
Specific embodiment
1 the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1:
As shown in Figure 1, parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system, which is characterized in that including work
Anchor slab 7, work clip sheet 8, top-pressing jack 1, magnetic flux transducer 2, stretch-draw jack 3, multi-channel switch case 4, magnetic bullet instrument 5
With host computer 6；The work anchor slab 7 is through on steel strand stay cable 9, and work clip sheet 8 is located on work anchor slab 7, and work anchor slab 7
With work clip sheet 8 for fixing steel strand stay cable 9；The top-pressing jack 1 is installed on 7 rear end of work anchor slab, is used for tensioning
Work clip sheet 8 is held out against after the completion；The stretch-draw jack 3 is mounted on 1 rear end of top-pressing jack, is used for steel strand wires oblique pull
The integral tension of rope 9；The magnetic flux transducer 2 is mounted on the steel strand wires oblique pull between top-pressing jack 1 and stretch-draw jack 3
On rope 9, every steel strand stay cable 9 installs a magnetic flux transducer 2；It is the multi-channel switch case 4 and magnetic bullet instrument 5, upper
Machine 6 is connected, and multi-channel switch case 4 and magnetic flux transducer 2 are electrically connected；The multi-channel switch case 4 cooperates magnetic bullet instrument 5 to magnetic
Flux sensor 2 carries out data acquisition；The host computer 6 is the computer that can directly issue manipulation command, can control multi-pass
The switching monitoring of road switch-box 4 channel, realizes the acquisition to 2 data of magnetic flux transducer on every steel strand stay cable 9.
Embodiment 2:
Embodiment 2 is advanced optimizing to embodiment 1, and the magnetic bullet instrument itself of use has operating platform and LCD
Display can directly be read.
Embodiment 3:
The method constructed using parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system, including walk as follows
It is rapid: Step 1: the monitoring system installation of parallel steel stranded wire stayed Cable Construction Suo Li uniformity；Step 2: being determined according to stretching rope power
0~100%F grading tension process of steel strand stay cable 9, starting stretch-draw jack 3 is whole to parallel steel stranded wire drag-line 9 to be classified
Tensioning；Step 3: within the dwell time, host computer 6 controls the switching monitoring of multi-channel switch case 4 after every grade of stretching rope power load
The each magnetic flux transducer 2 of channel monitoring, the control by the rope force value of the every steel strand stay cable 9 monitored, as tensioning
Force value, and record the rope force value of every steel strand stay cable 9；Step 4: host computer 6 reads magnetic flux sensing by magnetic bullet instrument 5
The rope force value that device 2 monitors judges that single steel twists by the requirement of " highway bridge and culvert construction technique normalizing " (JTG TF50-2011)
Whether 9 rope force value of line suspension cable is qualified, unqualified, carries out step 5, otherwise carries out step 6, the determination requirement are as follows: single
The difference of the rope force value of steel strand stay cable 9 and average rope force value needs≤3%, every steel strand stay cable 9 rope force value at the same level
Allowable error is ± 1%；Step 5: compensating tensioning makes its satisfaction to underproof 9 rope force value of single steel strand suspension cable
It is required that；Step 6: starting top-pressing jack 1 after the completion of tensioning, top-pressing jack 1 pushes up the work clip sheet 8 to work on anchor slab 7
Tightly, the anchoring of parallel steel stranded wire suspension cable 9 is completed；Step 7: unloading top-pressing jack 1, stretch-draw jack 3, magnetic flux sensing
Device 2, multi-channel switch case 4, magnetic bullet instrument 5 and host computer 6 slice off extra steel strand stay cable 9, and it is oblique to complete parallel steel stranded wire
The tensioning of drag-line 9.
Embodiment 4:
On the basis of embodiment 3, the grading tension in step 2 is divided into 20%F, 40%F, 60%F, 80%F,
100%F Pyatyi tensioning, when every grade of tensioning, are monitored every steel strand stay cable, to the unqualified stretching rope monitored
Force value compensates tensioning, to further increase the control precision and Suo Li uniformity of steel strand stay cable.
Claims (4)
1. parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system, which is characterized in that including the anchor slab, filing appliance of working
Piece, top-pressing jack, magnetic flux transducer, stretch-draw jack, multi-channel switch case, magnetic bullet instrument and host computer；The work anchor
Plate is through on steel strand stay cable, and work clip sheet is located on work anchor slab；The top-pressing jack is installed on work anchor slab rear end,
The stretch-draw jack is mounted on top-pressing jack rear end；The magnetic flux transducer is mounted on top-pressing jack and tensioning is very heavy
On steel strand stay cable between top, every steel strand stay cable installs a magnetic flux transducer；The multi-channel switch case
It connects with magnetic bullet instrument, host computer, multi-channel switch case and magnetic flux transducer are electrically connected.
2. parallel steel stranded wire stayed Cable Construction Suo Li uniformity according to claim 1 monitors system, which is characterized in that institute
Magnetic bullet instrument itself is stated with operating platform and LCD display, can directly be read.
3. using the described in any item parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system constructions of claim 1-3
Method, which comprises the steps of: Step 1: parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system peace
Dress；Step 2: determining steel strand stay cable 0~100%F grading tension process according to stretching rope power, start stretch-draw jack pair
Parallel steel stranded wire drag-line entirety grading tension；Step 3: after every grade of stretching rope power load, within the dwell time, PC control
Multi-channel switch case switching monitoring channel, the rope force value of every steel strand stay cable is monitored by magnetic flux transducer, as
The control force value of drawing, and record the rope force value of every steel strand stay cable；Step 4: host computer reads magnetic flux by magnetic bullet instrument
The rope force value that sensor monitors judges single steel by the requirement of " highway bridge and culvert construction technique normalizing " (JTG TF50-2011)
Whether twisted wire inclined cable force value is qualified, unqualified, carries out step 5, otherwise carries out step 6, the determination requirement are as follows: single
The difference of the rope force value of root steel strand stay cable and average rope force value needs≤3%, the rope force value of every steel strand stay cable peer
Allowable error is ± 1%；Step 5: compensating tensioning makes its satisfaction to underproof single steel strand inclined cable force value
It is required that；Step 6: starting top-pressing jack after the completion of tensioning, top-pressing jack holds out against the work clip sheet to work on anchor slab, complete
At the anchoring of parallel steel stranded wire suspension cable；Step 7: unloading top-pressing jack, stretch-draw jack, magnetic flux transducer, multichannel
Switch-box, magnetic bullet instrument and host computer slice off extra steel strand wires, complete the tensioning of parallel steel stranded wire suspension cable.
4. the method for parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system construction as claimed in claim 3, special
Sign is that grading tension is divided into 20%F, 40%F, 60%F, 80%F, 100%F Pyatyi tensioning in step 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811161633.5A CN109457614A (en) | 2018-09-30 | 2018-09-30 | Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system and construction method |
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|---|---|---|---|
| CN201811161633.5A CN109457614A (en) | 2018-09-30 | 2018-09-30 | Parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitors system and construction method |
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| CN109457614A true CN109457614A (en) | 2019-03-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686818A (en) * | 2019-09-19 | 2020-01-14 | 中铁十局集团第一工程有限公司 | Method for rapidly measuring cable force of steel strand stay cable |
| CN110847040A (en) * | 2019-10-28 | 2020-02-28 | 广西大学 | Intelligent equal-tension system of magnetic flux sensor and operation method thereof |
| CN113652965A (en) * | 2021-06-23 | 2021-11-16 | 中铁建工集团山东有限公司 | Stay cable space positioning tensioning construction system and tensioning construction method |
| CN114319114A (en) * | 2021-12-14 | 2022-04-12 | 中交二公局第一工程有限公司 | Improved stay cable equal-value tension method construction method based on deformation control |
| CN114674479A (en) * | 2022-03-02 | 2022-06-28 | 安徽省七星工程测试有限公司 | Real-time monitoring method and monitoring device for cable force of suspender |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686818A (en) * | 2019-09-19 | 2020-01-14 | 中铁十局集团第一工程有限公司 | Method for rapidly measuring cable force of steel strand stay cable |
| CN110686818B (en) * | 2019-09-19 | 2021-11-12 | 济南北环铁路有限公司 | Method for rapidly measuring cable force of steel strand stay cable |
| CN110847040A (en) * | 2019-10-28 | 2020-02-28 | 广西大学 | Intelligent equal-tension system of magnetic flux sensor and operation method thereof |
| CN113652965A (en) * | 2021-06-23 | 2021-11-16 | 中铁建工集团山东有限公司 | Stay cable space positioning tensioning construction system and tensioning construction method |
| CN114319114A (en) * | 2021-12-14 | 2022-04-12 | 中交二公局第一工程有限公司 | Improved stay cable equal-value tension method construction method based on deformation control |
| CN114319114B (en) * | 2021-12-14 | 2023-11-17 | 中交二公局第一工程有限公司 | Improved stay cable equivalent tensioning construction method based on deformation control |
| CN114674479A (en) * | 2022-03-02 | 2022-06-28 | 安徽省七星工程测试有限公司 | Real-time monitoring method and monitoring device for cable force of suspender |
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Application publication date: 20190312 |