CN109083022A - 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
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- CN109083022A CN109083022A CN201811159443.XA CN201811159443A CN109083022A CN 109083022 A CN109083022 A CN 109083022A CN 201811159443 A CN201811159443 A CN 201811159443A CN 109083022 A CN109083022 A CN 109083022A
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- steel strand
- cable
- force value
- pressure sensor
- stranded wire
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- 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
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- 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, monitoring system include top-pressing jack, stretch-draw jack, pressure sensor, extruded sleeve, data acquisition module, host computer.Pressure sensor is identical as steel strand wires quantity, top-pressing jack is placed in parallel steel stranded wire working instrument anchor rear end, holds out against for work clip sheet after the completion of tensioning；Stretch-draw jack is used as parallel steel stranded wire inclined guy cable stretching；Pressure sensor is placed in stretch-draw jack and squeezes inner room；Host computer connects data acquisition module, and data acquisition module reads the voltage signal of pressure sensor, host computer record, screening, storage rope force value.When this system integral tension, 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.The system automation degree and control precision are high, and artificial less investment, work efficiency is high, securely and reliably, easy to operate, are 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.Such as every steel strand wires equivalent tensioning average according to total Suo Li,
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.To improve stayed Cable Construction
When control precision and Suo Li uniformity, design a kind of parallel steel stranded wire suspension cable using integral tension technique, utilize pressure
Sensor carries out the construction of every steel strand wires work progress monitoring.
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:
One kind monitoring system for parallel steel stranded wire stayed Cable Construction Cable Force uniformity, which is characterized in that including steel
The stretching end and fixing end of twisted wire suspension cable, the steel strand tension end include work anchor slab, work clip sheet, top-pressing jack,
Stretch-draw jack, work anchor slab are through on steel strand stay cable, and work clip sheet is located on work anchor slab, the top-pressing jack peace
Loaded on tool anchor slab rear end, for being held out against after the completion of tensioning to work clip sheet；The stretch-draw jack is mounted on press thousand
Jin top front end, for steel strand stay cable integral tension；The pressure sensor is mounted on steel strand stay cable fixing end
On steel strand stay cable, every steel strand stay cable installs a pressure sensor；The extruded sleeve is pressure knot in steel strand inclined
One kind on drag-line bonds formula anchorage, forms pressure to pressure sensor when being used for steel strand stay cable tensioning；The data are adopted
Collect module to be electrically connected with pressure sensor and host computer respectively, data acquisition module is for acquiring every steel strand stay cable
The data of pressure sensor, host computer are the computers that can directly issue manipulation command, for recording, screening, storing data
The rope force value of the collected every steel strand stay cable of acquisition module.
Method with construction is monitored using monitoring system of the present invention, includes the following steps: step
One, parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system installation；Step 2: determining steel strand inclined according to stretching rope power
0~100%F grading tension process of drag-line starts stretch-draw jack to parallel steel stranded wire drag-line entirety grading tension, extruded sleeve
Squeeze pressure sensor；Step 3: after every grade of stretching rope power load, within the dwell time, PC control data acquisition module
The data for acquiring pressure sensor, by the rope force value of collected every steel strand stay cable, as the control force value of tensioning, and
Record the rope force value of every steel strand stay cable；Step 4: host computer reads pressure sensor monitoring by data acquisition module
The rope force value arrived judges single steel strand suspension cable by the requirement of " highway bridge and culvert construction technique normalizing " (JTG TF50-2011)
Whether rope force value is qualified, unqualified, carries out step 5, otherwise carries out step 6, the determination requirement are as follows: single steel strand is oblique
The difference of the rope force value of drag-line and average rope force value needs≤3%, and the rope force value allowable error of every steel strand stay cable peer is
± 1%；Step 5: compensating tensioning meets the requirements it to underproof single steel strand inclined cable force value；Step
Six, start top-pressing jack after the completion of tensioning, top-pressing jack holds out against the work clip sheet to work on anchor slab, completes parallel steel and twists
The anchoring of line suspension cable；Step 7: unloading top-pressing jack, stretch-draw jack, pressure sensor, extruded sleeve, data acquisition module
Block and host computer slice off extra steel strand stay cable, 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
Precision and uniformity between every steel strand wires are mended when monitoring that a certain steel strand stay cable tensioning is unqualified using tensioning
It repays jack and 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, in figure, 1, stretch-draw jack；2, top-pressing jack；3, work anchor slab；4, work clip sheet；5, pressure sensing
Device；6, extruded sleeve；7, data acquisition module；8, host computer；9, steel strand stay cable.
Specific embodiment
1 the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1:
One kind monitoring system for parallel steel stranded wire stayed Cable Construction Cable Force uniformity, which is characterized in that including steel
The stretching end and fixing end of twisted wire suspension cable, the steel strand tension end include work anchor slab 3, work clip sheet 4, top-pressing jack
2, stretch-draw jack 1, work anchor slab 3 are through on steel strand stay cable 9, and work clip sheet 4 is located on work anchor slab 3, the press
Jack 2 is installed on 3 rear end of work anchor slab, for holding out against after the completion of tensioning to work clip sheet 4；The stretch-draw jack 1
It is mounted on 2 front end of top-pressing jack, for 9 integral tension of steel strand stay cable；The pressure sensor 5 is mounted on steel strand wires
On the steel strand stay cable 9 of suspension cable fixing end, every steel strand stay cable 9 installs a pressure sensor 5；The extruded sleeve
6 be that the one kind of pressure knot on steel strand stay cable 9 bonds formula anchorage, to pressure sensor 5 when for 9 tensioning of steel strand stay cable
Form pressure；The data acquisition module 7 is electrically connected with pressure sensor 5 and host computer 8 respectively, and data acquisition module 7 is used
In the data for acquiring pressure sensor 5 on every steel strand stay cable 9, host computer 8 is the meter that can directly issue manipulation command
Calculation machine, for recording, screening, the rope force value of the collected every steel strand stay cable 9 of storing data acquisition module 7.
Embodiment 2:
The process for carrying out steel strand stay cable construction monitoring using this system is as follows: Step 1: parallel steel stranded wire suspension cable
Suo Li uniformity of constructing monitoring system installation；Step 2: determining 0~100%F points of steel strand stay cable 9 according to stretching rope power
Grade tension process, very heavy 1 top of starting tensioning is to the whole grading tension of parallel steel stranded wire drag-line 9, extruded sleeve squeeze pressure sensor；
Step 3: within the dwell time, host computer 8 controls data acquisition module 7 and acquires pressure sensor after every grade of stretching rope power load
The rope force value of collected every steel strand stay cable 9 as the control force value of tensioning, and is recorded every steel and twisted by 5 data
The rope force value of line suspension cable 9；Step 4: host computer 8 reads the Suo Li that pressure sensor 5 monitors by data acquisition module 7
Value, judges that 9 rope force value of single steel strand suspension cable is by the requirement of " highway bridge and culvert construction technique normalizing " (JTG TF50-2011)
No qualification, it is unqualified, step 5 is carried out, otherwise carries out step 6, the determination requirement are as follows: the rope of single steel strand suspension cable 9
The difference of force value and average rope force value needs≤3%, and every steel strand stay cable 9 rope force value allowable error at the same level is ± 1%；Step
Rapid five, to underproof 9 rope force value of single steel strand suspension cable, compensating tensioning meets the requirements it；Step 6: tensioning is complete
At rear starting top-pressing jack 2, top-pressing jack 2 holds out against the work clip sheet 4 to work on anchor slab 3, and it is oblique to complete parallel steel stranded wire
The anchoring of drag-line 9；Step 7: unloading top-pressing jack 1, stretch-draw jack 3, pressure sensor 2, extruded sleeve 6, data acquisition module
Block 5 and host computer 6 slice off extra steel strand stay cable 9, complete the tensioning of parallel steel stranded wire suspension cable 9.
Embodiment 3:
On the basis of embodiment 2, grading tension can be divided into 20%F, 40%F, 60%F, 80%F in step 2,
100%F Pyatyi tensioning.
Claims (3)
1. parallel steel stranded wire stayed Cable Construction Cable Force uniformity monitors system, which is characterized in that including steel strand stay cable
Stretching end and fixing end, the steel strand tension end include work anchor slab, work clip sheet, top-pressing jack, stretch-draw jack,
Work anchor slab is through on steel strand stay cable, and work clip sheet is located on work anchor slab；The top-pressing jack is installed on moveable anchor
Plate rear end；The stretch-draw jack is mounted on top-pressing jack front end；It is solid that the pressure sensor is mounted on steel strand stay cable
On the steel strand stay cable of fixed end, every steel strand stay cable installs a pressure sensor；The extruded sleeve is pressure knot in steel
One kind on twisted wire suspension cable bonds formula anchorage；The data acquisition module electrically connects with pressure sensor and host computer respectively
It connects.
2. using the method for parallel steel stranded wire stayed Cable Construction Suo Li uniformity described in claim 1 monitoring system construction,
It is characterized in that, includes the following steps: Step 1: the monitoring system installation of parallel steel stranded wire stayed Cable Construction Suo Li uniformity；Step
Two, 0~100%F grading tension process of steel strand stay cable is determined according to stretching rope power, starts stretch-draw jack to parallel steel
Twisted wire drag-line entirety grading tension, extruded sleeve squeeze pressure sensor；Step 3: after every grade of stretching rope power load, in pressure maintaining
In, the data of PC control data collecting module collected pressure sensor, by collected every steel strand stay cable
Rope force value as the control force value of tensioning, and records the rope force value of every steel strand stay cable；Step 4: host computer passes through number
The rope force value that pressure sensor monitoring arrives is read according to acquisition module, is pressed " highway bridge and culvert construction technique normalizing " (JTGTF50-2011)
Requirement judge whether single steel strand inclined cable force value qualified, it is unqualified, carry out step 5, otherwise carry out step 6, institute
State 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%, every steel strand wires oblique pull
The rope force value allowable error of rope peer is ± 1%；Step 5: being mended to underproof single steel strand inclined cable force value
Repaying tensioning meets the requirements it；Step 6: start top-pressing jack after the completion of tensioning, top-pressing jack is by the work on anchor slab that works
It is held out against as intermediate plate, completes the anchoring of parallel steel stranded wire suspension cable；Step 7: unloading top-pressing jack, stretch-draw jack, pressure pass
Sensor, extruded sleeve, data acquisition module and host computer slice off extra steel strand stay cable, complete parallel steel stranded wire suspension cable
Tensioning.
3. the method for parallel steel stranded wire stayed Cable Construction Suo Li uniformity monitoring system construction as claimed in claim 2, special
Sign is that grading tension is divided into 20%F, 40%F, 60%F, 80%F, 100%F Pyatyi tensioning in step 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159443.XA CN109083022B (en) | 2018-09-30 | 2018-09-30 | System and method for monitoring construction cable force uniformity of parallel steel strand stay cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159443.XA CN109083022B (en) | 2018-09-30 | 2018-09-30 | System and method for monitoring construction cable force uniformity of parallel steel strand stay cable |
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| Publication Number | Publication Date |
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| CN109083022A true CN109083022A (en) | 2018-12-25 |
| CN109083022B CN109083022B (en) | 2023-05-23 |
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| CN201811159443.XA Active CN109083022B (en) | 2018-09-30 | 2018-09-30 | System and method for monitoring construction cable force uniformity of parallel steel strand stay cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN101236116A (en) * | 2008-02-28 | 2008-08-06 | 中铁大桥勘测设计院有限公司 | Method for determining stranded stayed single cable initial tensioning force |
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| JP5879453B1 (en) * | 2015-08-27 | 2016-03-08 | 新日鉄住金エンジニアリング株式会社 | Method of introducing initial tensile strain into cable and optical fiber |
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| WO2016175906A1 (en) * | 2015-04-27 | 2016-11-03 | Campbell Richard V | Advanced methods and designs for balancing a stranded termination assembly |
| JP5879453B1 (en) * | 2015-08-27 | 2016-03-08 | 新日鉄住金エンジニアリング株式会社 | Method of introducing initial tensile strain into cable and optical fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN109083022B (en) | 2023-05-23 |
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